Davis, Chap. 1
Beatley, et al., Chap. 1 (pp. 1-12); Chap. 2 (pp. 17-29 and 46-51); Chap. 3 (pp. 53-90)
Tide Chart Information Due
Expand awareness of the complexities of global issues
Foster analytical thinking
Enhance technical knowledge about earth science
Emphasize clear writing skills
Watch the movie, HOME, and then identify one major global problems covered in the movie that relates to energy supply or energy management.
Provide at least one solution for that problem.
Link to movie: https://www.youtube.com/watch?v=jqxENMKaeCU
Prepare your commentary for submission on Blackboard.
This is an individual assignment and your paper should be uniquely different from any other student's paper.
Prepare an initial draft of paper and edit for spelling, punctuation, sentence structure, style and content
Submit Final Draft (limit to one page, use word processor, post on Blackboard website under "Assignments" - Assignment 1).
Due Date: Due dates are posted on Blackboard.
Review tenets of "systems theory"
Foster analytical thinking
Link theoretical constructs and practical applications
Understand complexity of major environmental disasters
Find Reserve Reading #1 (Blackboard Content Folder)
Watch the video lecture on Systems Theory. The link is listed below: https://www.youtube.com/watch?v=W8SoMztCXzo
After watching the lecture, choose an important or well publicized ecological disaster such as the Fukushima, Japan nuclear reactor meltdown following a large earthquake and tsunami, or the the Chernobyl, Ukraine explosion and fire disaster in 1986, or the BP Oil Leak in the Gulf of Mexico.
Then prepare a commentary showing how your chosen case study could be analyzed using systems theory...use specific terminology from the lecture.
Bring your comments to class for a structured discussion (date to be announced)
You will submit your rough comments at the end of class for participation credit (about 10 students will be called on randomly to share their comments orally).
Due Date: Due date posted on Blackboard.
Introduction to Coastal Oceanography
The Edge of the Sea Is a Strange and Wonderful Place
Rachel Carson
Realities of Coastal Living
Unique beauty of seacoasts
High property values
A water view is the single best multiplier for property values
Limited quantity of land available
Supply and demand dynamics
Shoreline rental properties are profitable
Coastlines Are Crowded
High population density near coastlines
One half of Americans live within 50 mi of a coast
110 million people (1999); expected to rise to 127 million by 2007
Two-thirds of the world's population lives near a coast
Activities of residents and visitors impact the coastal areas
Distribution of Coastal Populations
Human Impacts on Coasts
Activities of residents and visitors impact the coastal areas
Oversized hotels located near the water
Overcrowded beaches (blanket to blanket)
Motor-homes/trailer parks near beaches
Gas stations/power plants/parking lots near wetlands
Recreation facilities are abundant (marinas, ferries, etc.)
Regional Trends
Northeast
Large retirement and resort areas grow faster
30 % growth expected (from 1960 to 2010)
Severe degradation in some areas already
Pacific Region
Increase of 6 million people is expected
Alaska growth rate expected to be 40%
Los Angeles, Orange and San Diego counties will increase the most
Great Lakes Region
Regional percentage expected to drop
Shores of Lake Michigan and Superior expected to grow fastest
Porter County, IN
Gulf of Mexico Region
Houston, New Orleans, Tampa, and St. Petersburg have highest density
Alabama expected to grow fastest ("Florida beaches at half the price")
Southeast Region
Concentration in Miami, Savannah, Jacksonville, and Charlestown
Highest regional increase expected
Other Coastline Values
Habitat for wildlife
Natural filter for impurities
Safety barrier and wind buffer during storm events
Food source (fish and shellfish)
Recreation area
Aesthetics and spiritual renewal
Stakeholders in Policy Making
Residents and visitors
Fishing and food industry (employment, restaurants, markets, etc.)
Transportation (boating, ferries, shipping)
Elected/appointed government officials
Community & environmental planners
Coastal Terminology
Coasts (intersection of water, air, land)
Coastal zone (a transitional area where two ecological communities meet)
Confluence of terrestrial habitats and marine habitats
Estuarine ecosystems (those associated with the coastal zone)
Salt marshes, lagoons, rock pools, beaches
Legislation Affecting Coasts
Coastal Zone Management Act (federal law)
Defines coastal areas to encompass the state's coastal waters and shorelines
Includes "islands, transitional and intertidal areas, salt marshes, wetlands, and beaches"
Also defines the landward regions associated with the coasts
Includes connecting waters, harbors, marshes of the Great Lakes (containing some seawater)
CZM Programs managed by NOAA (National Oceanic and Atmospheric Administration)
Other Legislation
Submerged Lands Act (1953)
Federal law allowing coastal states in the U.S. to extend its boundaries to 3 miles from its coasts
Coastal zone in the Great Lakes extends to the "international boundary between the U.S. and Canada"
Definitions apply to the Atlantic, Pacific, and Arctic Oceans, Gulf of Mexico, Long Island Sound,
Puerto Rico, Virgin Islands, Guam, Mariana Islands, Pacific Islands, and American Samoa
State Coastal Management programs
Example: California law expands the definition of a coast ("generally 1,000 yards from the mean high tide line of the sea")
Inward to the first ridge, or 1000 yards from the mean high tide line
Excludes San Francisco Bay (managed under a separate agency � San Francisco Bay Conservation and Development Commission)
Coastal Problems/Challenges
Coastal hazards (storms, erosion, flooding)
Coastal pollution (point source and non-point source pollutants, marine debris)
Ocean dumping (dredged material, sludge, garbage, military wastes, ocean incinerated waste)
Offshore oil development/mining
Disappearance of open space
Social equity problems
Loss of agricultural lands
Loss of healthy wetlands
Poorly designed drainage systems
Need for better coastal planning
Develop alternatives to "site-by-site" decisions
Involve more stakeholders in planning
Loss of small town "character"
Coastal Agricultural Land
Threats to fruit and vegetable production
Estimate that two-thirds of nation's fruit, one-half of vegetables, and one-fourth of dairy products are produced in coastal areas
Most common cause - urban sprawl (orchards being replaced by factories, homes, schools)
Loss of Wildlife Habitat
Loss of specific habitats (salt marsh, estuaries, grasslands, etc.)
Causes include timber harvesting, grassland conversion, inland waterway conversion, urbanization
Example: Developer proposed to build 4,884 homes in the Bolsa Chico Wetlands (Calif.)
Overall loss of respect for coastal habitats
Coastal Interconnectedness
Linkages between physical parameters, biological organisms, and business development in coastal regions
Features that make coastal areas unique and beautiful may also
confer vulnerability in the face of human habitation
and business development
Example: Glaciers modify landforms, thus determining its future land use (see handout)
Glacial Activity & Coastlines
Past Geological Activity
Human
Pathways
Community Implications
Land Use Tools for Prevention
Summary
People love coasts
People live in the coastal zone
Coastal populations cause a number of impacts, including habitat loss,
lifestyle changes for locals, and lost agricultural productivity
Systems Theory and Coastal Resilience
Beatley, et al., Chap. 2 (pp. 46-52)
Bertness, Chap. 2
Handouts - GIS Techniques
HOME Movie Comments Due
Rachel Carson
Diversity of Coastal Geomorphology - History of Coastal Research
Types of Coastal Formations
Zones of transition between the ocean and land, where waves, currents, and tides act to mold the landforms, which in turn influence the movement of the water
Width of coasts
Less than 1 km on cliffed coasts or more than 100 km in large estuaries (Delaware Bay)
Pocket beaches on the Pacific Coast – long and wide beaches on East Coast and Gulf Coast
History of Coastal Research
Scientists have only recently undertaken comprehensive investigations of the coast
First systematic studies of coasts were conducted by geomorphologists in the early 20th Century
How coasts evolved
Processes by which coasts are changed and formed
Engineers constructed harbors, docks, and bridges; stabilize and protect the open coasts
Most often to prevent, or at least slow erosion
Examples: Holland and Germany protect and reclaim shorelines by building dikes
Before WW II, the focus was to understand and control coasts
During the war, interest in coastal geomorphology and coastal processes was emphasized
Waves, tides, currents, and hydrological patterns along coasts
Most of the coasts throughout the world were mapped in detail
After WW II, emphasis was shifted to engineering and global study of river deltas (Mississippi);
Research broadened to include beaches, inlets, and deltas of the of the world’s coasts, all potential settings for military activity
Modern Era of Coastal Research: 1960’s and 1970’s
Research was conducted primarily by university researchers who studied open coastal environments
Broadened and expanded coastal research centers
More recent trends – last 30 years
Coastal protection programs have expanded worldwide
New agencies and management plans for addressing coastal development and wetlands degradation
East/West Coasts of the U.S.
East Coast
Wide coastal zones stretch to the sea, marked by wide beaches and high dunes, deltas, and barrier islands
Trailing coast
Deposition of sediment is dominant
West Coast
Bedrock headlands interrupted by pocket beaches
Erosion of sediment is dominant
Process of erosion and deposition create landforms of great variety
East Coast Examples
More East Coast Examples
Pacific Coast Examples
Coastal Processes
Coastal processes may work in a short time (days) or long time (years)
Examples:
Winter storms and swift tidal currents cause short term changes
Geological development can be observed in only a few years
Overall development of the coastal areas took as long as 180 million years to develop--period since the breakup of the continents
Examples of Patterns
Days/Years: action of waves, currents, and tides
Thousands of Years: gradual sea level changes
Global climate changes with temperatures falling for 1000’s of years, then rising for 1000’s of years
Sea levels now rising about 1-2 mm per year
Result in long and slow, but steady, change
Millions of years: mountain formation and erosion
Effects of Short Term and Long Term Processes
The combination of short-term and long-term processes produces the deltas, estuaries and barrier islands (deposition activity) and the rocky coastlines (erosion activity)
GIS Techniques -
Field Sampling Techniques -
Davis, Chap. 2
Beatley, et al., Chap. 2 (pp. 13-16)
Bertness, Chap. 1
Systems Analysis Comments Due
Sources of Energy to Power Society - Fossil Fuels, Nuclear Reactors, Renewables (fuel cycles, energy flows, cost/benefit analysis)
Electric Utility Industry (generation, transmission, utilization patterns)
Energy Flow Patterns in the U.S. (primary fuels, secondary fuels, end users)
Nuclear Issues (technology, safety, accidents, economic complexities)
Business and Energy Technology (economic implications - resource base, waste management, pollution avoidance)
Energy Politics & Decision Making (governmental, legal and political linkages)
Challenges of Pollution (types of pollution, waste management, pollution prevention/avoidance)
Additional Pollution Problems & Conventional Energy
Student Presentations - Past Semesters (usage patterns & fuel cycles)--see Blackboard "Content" folder for Spring 2019 presentations
Coal
Petroleum
Natural Gas
Tar Sands
Shale Oil (Kerogen)
Nuclear Fission
Transmission Efficiency
Energy Use Sectors
Fuel Cycle Analysis
Retorting
Bituminous
Anthracite
Surface Mining
Deep Mining
Drilling Platform
Petrochemicals (feedstocks)
Nimbyism
U-235
Half-life
Fuel Rods
Control Rods
LMFBRs
Moderator
Light Water Reactor
Graphite Cooled Reactors
Chernobyl
Three Mile Island
SURFs
Transuranic Wastes
High Level Radioactive Wastes
Yucca Mountain
Decommissioning
LOCA
Core Meltdown
Somatic vs. Genetic Damage
Chronic vs. Acute Exposure
Radon-222
Nuclear Fusion
Tokamak
Davis, Chap. 3
Beatley, et al., Chap. 2 (pp. 30-44)
How Coasts are Formed - Processes of Change
Effects of Climate Change on Coastal Ecology
Beatley, et al., Chap. 2 (pp. 46-52)
Bertness, Chap. 2,3,4
Problem 1 Due
Coastal Ecology - Trophic Dynamics
“The Edge of the Sea Is a Strange and Wonderful Place.”
Rachel Carson
Overview of Coastal Ecology
Coastal Ecosystems
Ecosystem – a stable, interactive system, comprised of a biotic (living) community
dependent upon the abiotic (non-living) environment
Examples of coastal ecosystems:
Estuaries, salt marshes & mangrove swamps
Differences in Coasts
Coastal flood plains (width and extent of coverage)
Presence or absence of rock formations (rock pools, cliffs, bluffs, etc.)
Dynamics of estuaries (tidal flux, flooding characteristics, biotic diversity is high in shallow sediments)
Land Formations in the United States
Ocean Divisions
Pelagic Division (water column of the ocean)
Benthic Division (ocean bottom and sediments)
Ocean bottom and sediments
Additional zones (three criteria)
Distance from the land
Light availability
Depth
Ocean Divisions and Zones
Types of Coastal Ecosystems
Estuaries (basins with mixed salinity)
Salt Marshes (shallow water area, grasses e.g., Spartina, soft benthos, snails, birds, clams, etc.)
Mangrove Swamps (flooded woodlands)
Rocky Shores (rock outcroppings, exposed rock pools)
Sandy Beaches (flatlands, lower diversity)
Intertidal Zone (area between low & high tide; extremes of temperature, moisture and salinity)
Coral Reefs (Complex, highly diverse, tropical)
Kelp Forests (Found in deeper water, brown algae)
Pathways & Flows
Linkages between abiotic and biotic components of coastal ecosystems
Nutrients for plants and algae
Nitrates (NO3)
Phosphates (PO4)
Sulfates (SO4)
Trophic interactions (food chains)
Energy Flow
Photosynthesis (plant & algal cells)
6C02 + 6H20 = C6H12O6 + 602
Respiration (all living organisms)
C6H12O6 + 02 = 6C02 + 6H20
Food Chains
Producers (autotrophs)
Producers are usually the smallest size organisms within an ecosystem; trees are an exception
Photosynthesis releases oxygen back to the environment
Carbon fixation helps to recycle CO2 from the atmosphere and seawater
Output of organic compounds (C-H) produced during photosynthesis is called primary productivity
Herbivores (heterotrophs)
Feed on producers
Usually larger than producers, but exist in smaller numbers (trophic pyramid)
Serve as food (prey) for carnivores (predators)
Carnivores (heterotrophs)
Feed on herbivores
Usually larger than herbivores, with populations smaller than those of the herbiores
(trophic pyramid); baleen whales are an exception
1o carnivores serve as food (prey) for 2o carnivores (predators)
May be several layers of carnivores within a given ecosystem (e.g., in marshes)
Decomposers (heterotrophs)
Also called detritovores
Feed on detritus (dead organisms or products of living creatures) and waste products
Often very small microorganisms (bacteria, viruses, molds, protozoa, invertebrates)
May serve as food for other consumers in the ecosystem (e.g., larvae eaten by fish)
Grazing food chain
Based on photosynthesis as a source of energy
Comprised of producers, consumers, and decomposers
Important in the planktonic community (floating organisms), found in the photic zone of marine ecosystems
Detritus food chain
Based on decomposition of detritus as a source of energy
Comprised of detritovores
Especially important in the benthos (bottom sediments)
Food Webs
Most ecosystems are characterized by complex food webs
Trophic dynamics may include predation, parasitism, and other interdependent relationships
Feeding behaviors may be elaborate and adaptive (e.g., attack and avoidance strategies such as armor or camouflage)
Trophic Pathways in the Pelagic Environment of Florida Bay
Biogeochemical Cycles
Chemicals move through biotic communities in recurring cycles
Reservoirs may be sedimentary (earth’s surface), or gaseous (atmospheric)
Pollutants can move through the same pathways (e.g., DDT or mercury following the carbon cycle)
Hydrologic Cycle
Water vapor formation via evaporation is highest in tropical regions
Water vapor moves from equator to the poles, then cools and falls back to earth as precipitation
Sea salt provides precipitation nuclei
Land runoff carries chemicals and sediments into oceans
Carbon Cycle
Follows food web dynamics
CO2 generated through cell respiration is raw material for photosynthesis
Dissolved carbon dioxide forms bicarbonate ions
CO2 + H2O ---> H2CO3 ---> H+ + HCO3-
Calcium carbonate occurs in marine shells
Calcium carbonate from shells can accumulate to form limestone
Marine sediments from the past helped to form deposits of fossil fuels (e.g., petroleum, natural gas)
Oxidation of fossil fuels releases heat, CO2
Sulfur dioxide, nitrogen oxides released
Nitrogen Cycle
Producers commonly utilize ammonia (NH3), nitrite (NO2), or nitrate (NO3)
Conversion to amino acids (precursors of proteins)
Animals excrete nitrogen as ammonia, urea, or uric acid
Bacterial degradation of animal wastes
Atmospheric reservoir of nitrogen (~79% of air at surface)
Sources of nitrates
Electrical discharges during thunderstorms
Nitrogen fixation by microorganisms such as cyanobacteria in oceans
Runoff from land (agricultural, residential) may contain nitrogen compounds
Phosphorus Cycle
Producers commonly utilize soluble phosphates (PO4)
Conversion in living organisms to calcium apatite (teeth, bones), adenosine triphosphate,
ATP (used in photosynthesis and cell respiration),
and in nucleic acids (DNA, RNA) for transfer of genetic information.
Sedimentary reservoir of phosphorus (rocks, ocean sediments)
Sources of phosphates
Weathering of rocks
Microbial conversion of dead organisms
Runoff from land (agricultural, residential) may contain phosphorus compounds
Loss of phosphorus in marine systems (sinking from the photic zone into the sediments)
Off the coasts of California and Peru, large quantities of nutrient-laden materials sink
Upwelling currents bring nutrients back to surface
(e.g., 50% of world’s commercial fish catch – 0.1% of ocean’s surface)
Phosphorus Cycle (For Illustration, see textbooks)
Sea Salt Cycle (For Illustration, see textbooks)
Mercury Cycle
Mercury often released into marine ecosystems as an industrial byproduct (waste)
Bacterial methylation (attaching CH3 to the mercury) produces methylmercury in sediments
Bioaccumulation (or biomagnification) of mercury through the food chain
Methylmercury can accumulate in the tissues of pilot whales (long-distance migration patterns)
Pilot whales may be consumed by humans (e.g., Faroe Islands off the Danish coast)
Cause damage to neurological system
Energy Processes - Photosynthesis & Respiration
Davis, Chap. 4
Bertness, Chap. 6,7
Team Activity Due
Coastal Habitats - Estuaries and Bays
Estuaries and Bays - Physical Geology
Organisms and Their Interactions
What is a Species?
Kind of organism that can interbreed
Each species has a scientific name
Homo sapiens for humans
Vorticella marina for marine ciliated protozoa
Italicize or underline scientific names
Individuals are organized into populations
What is a Population?
Group of the same kind of organism
Comprised of the same species
Characteristics of a Population
Numbers/Size
Density and Distribution
Reproductive Rate
Growth Rate
Populations are part of communities
What is a Community?
Group of interacting populations
Biotic component of an ecosystem
Characteristics of a community
Species diversity
Diversity of species interactions
e.g., predation, competition, symbiosis
Food Webs / Trophic Pyramids
Types of Estuarine Communities
Seagrass communities
Tidal mudflats
Salt marshes
Coastal ponds
Mangrove swamps
How do we name organisms?
Taxonomy – the science of naming organisms
Based on a few large groups, divided into smaller groups
Scientific names allow scientists in different locales to share technical information
Taxonomic Schemata
Kingdom
Phylum
Class
Order
Family
Genus
Species
EXAMPLES OF TAXONOMIC CLASSIFICATION
Whittaker’s Five Kingdoms
Procaryota (Monera)
Unicellular, no membrane bound organelles
Protista
Unicellular, may be motile, have organelles
Plants
Multicellular, not motile, photosynthesize
Animals
Multicellular, motile, complex organ systems, heterotrophic
Plants
Multicellular, non-motile, often detritovores
Types of Organisms
Procaryota (Monera)
Bacteria, Cyanophyta (blue-green algae)
Very important to detritus food chains
Act as decomposers of dead organisms and waste materials; active in sediments
Important to Biogeochemical Cycles
Sulfur Bacteria
Nitrifying and Phosphatizing Bacteria
Pathogenic Bacteria associated with sewage
Protista
Unicellular Algae – photosynthetic
Important as phytoplankton
Live in photic zone - shallow sediments
Serve as basis of estuarine food chains
Protozoa – usually not photosynthetic
Amoeboid forms, ciliates, flagellates
Active in plankton and benthos
Intermediate level in food chains
May have very elaborate behavior patterns
Protista (continued)
Examples of Unicellular Algae
Diatoms (characteristic shapes, silicaceous)
Dinoflagellates (outer shell, flagellates)
Desmids (green algae, two-part shell)
Euglenoids (small, green, flagellated)
Examples of Protozoa
Amoebae (pseudopods, change body shape, may have an outer shell, like Radiolarians)
Ciliates (e.g., Vorticella, Euplotes, Pleuronema, Condylstoma, tintinnids)
Flagellates (colorless, small, e.g., Phacus)
Protista (continued)
Multicellular algae, found in rock pools, or in deeper water
Green algae (Ulva, Cladophora)
Red algae (Polysiphonia)
Brown algae (Kelp, Fucus, Ascophyllum)
Plants
Grasses, usually found in near-shore, shallow water communities
Eelgrass (Zostera marina)
Cord grass (Spartina sp.)
Juncus
Saltworts
Phragmites (indicates presence of fresh water)
Animals
Porifera (sponges)
Small, sac-like animals that filter water
Coelenterates (hydroids)
Cylindrical bodies with one opening, ringed with tentacles (anemones, corals, jellyfish)
Platyhelminths (flatworms)
Live under rocks (important to detritus cycle)
Animals (continued)
Molluscs (clams & snails)
Hard shells, soft bodies (soft shell clams, quahags, razor clams, oysters, scallops,
periwinkles, oyster drills, Thais, Littorina)
Annelid Worms – segmented bodies
Marine worms (polychaetes, like Nereis)
Very active in soft muds (salt marshes, mud flats, shallow sediments)
Animals (continued)
Arthropods-hard shells, jointed appendages
Class: Crustacea (live in water habitats)
Crabs, lobsters, “bugs”, horseshoe crabs, hermit crabs, amphipods, shrimp, isopods, copepods
Must shed their shells as they grow
Very important in plankton, pelagic, and benthic communities.
Echinoderms
Spiny skinned animals, radial organization
Starfish, brittle stars, sand dollars & sea cucumbers
Animals (continued)
Chordates (vertebrates)
Fish (aquatic habitats, cartilaginous or bony, scales, fins)
Common New England species (cod, haddock, flounder, bluefish, skate, sharks)
Birds (wings, feathers, hard-shelled eggs)
Common N.E. species (gulls, terns, osprey)
Species Interactions
Symbiosis (mutualism, commensalism)
Resource sharing
Beneficial to at least one of the two species
Predation (predator/prey)
Parasitism (parasite/host)
Competition (space, food, nutrients, water)
Glossary of terms
Species
Population
Community
Kingdoms
Detritovores
Photic zone
Phytoplankton
Benthos
Monera
Protista
Algae
Protozoa
Porifera
Coelenterata
Platyhelminths
Molluscs
Annelids
Arthropods
Primates
Zostera marina
Spartina alterniflora
Detritus food chain
Phytoplankton
Zooplankton
Keystone species
Productivity
Biotic diversity
Estuarine Conditions - General Characteristics
Tidal mixing (salinity variations)
Productive ecosystems (high organic content, high biotic diversity, complex behavioral interconnections)
Often subject to algal blooms (red tides), due to organic input, high temperatures, and poor mixing within the estuary
Seagrass Communities
Highly productive habitat, dominated in New England by eelgrass, Zostera marina
Important habitat areas for important commercial fish and shellfish species
Extensive soft sediments at base of grasses where a rich biotic community thrives (see food chain)
Many restoration programs in place
Tidal Mudflats
Soft muds, exposed at low tide, excellent habitat for burrowing animals
Molluscs, annelid worms, small arthropods
Productive community, heavily dependent on detritus food chain
Important habitat for commercial shellfish
Quahags, soft-shell clams, scallops
Salt Marshes
Dominated by grasses (Spartina alterniflora in Rhode Island), interspersed by tidal streams
May contain a mudflat area or salt pond (see photos)
Highly productive community, high biodiversity
Nursery area for many fish & shellfish
Complex food chain (detritus type)
Many restoration programs underway
Coastal Ponds
Shallow ponds, which may or may not be directly connected to the ocean
Ideal habitat for shellfish, especially oyster beds (lowered salinity blocks presence of oyster drill)
Rhode Island once a major producer of oysters for the East Coast)
Also called “salt ponds” (protected under the R.I. CZM Plan); SEE HANDOUT
Threatened by boating excesses
Mangrove Swamps
Found in southern waters, dominated by mangrove trees (keystone species)
Creates ideal habitat for animal life (see photos)
Protection from wave action; high organic content
High biodiversity
Complex food chain
Rocky Intertidal Zone
Rocky intertidal zone exists between high and low tide (area below low tide line is called the subtidal zone)
Rock pools (also called tide pools) form between rocks
Challenges to Organisms
How to cling to rocks in strong wave action
How to withstand desiccation in summer low tides
How to deal with salinity variation in summer (increased) or in spring/fall storms (diluted)
Home to coelenterates (sea anemones), molluscs (snails, mussels), crustaceans (crabs, lobsters, gammarids, copepods), echinoderms (starfish, sea cucumbers)
Green, red, and brown algae common
Examples of Rock Pool Algae: Cladophora, Polysiphonia, Fucus, Ascophyllum
High diversity of species and interactions among the inhabitants, with elaborate food chains
Coral Reefs
Coral Reefs have very high biotic diversity, especially in tropical waters
Every kingdom represented, with dominance by the coral animals (coelenterates) and their symbiotic algae
Rich in fish life, occupying every possible niche on the reef
Complex food web, with many behavioral adaptations for sharing the reef
Coral reefs endangered throughout the world
Summary
Estuarine environments have high biotic diversity, and are highly adaptable
Characterized by changing dynamics (salinity, tidal exchange, temperature)
Feature highly complex food webs and behavioral interconnections
Important support systems for coastal regions; support deep water fisheries
Glossary of terms
Seagrass Community
Tidal Mudflats
Coastal Ponds
Salt Ponds
Mangrove Swamps
Rock Pools
Coral reefs
Benthos
Productivity
Keystone species
Biotic diversity
Tidal mixing
Red tides
Toxic dinoflagellates
Phytoplankton
Zooplankton
Salt Marshes
Salt Ponds (Coastal Lagoons)
Mangrove Swamps
Seagrass Communities
Davis, Chap. 5, 6
Coastal Habitats - Rivers and Coasts - Barriers
Tides
Beaches - a dynamic, changing part of a coast - sediment moves with each wave
Beaches extend from the low tide line landward to the beginning of permanent vegetation, or the next geomorphic feature (dune, rocky cliff, seawall, etc.)
Sections of a Beach:
nearshore
foreshore - also includes
the swash zone
ridge and runnel (swash bar)
backshore
storm ridge
Types of Beaches
reflective beach
dissipative beach
Beach Materials
(nearly anything that can be transported by waves can form a beach)
mud beach
gravel beach
Beach Processes
waves and the currents they generate influence the sediment and the structure of beaches
each crash of a wave suspends an amount of sediment directly proportional to the size of wave
the sediment is then moved by currents; types of currents:
combined flow current
longshore currents
rip currents
swash currents
Beach Cycles - Sediment Transport
accretional beaches
storm beaches
erosion profile
storm beach is a temporary condition
Coastal Dunes (large piles of sand that have accumulated)
An available supply of sediment and wind are required
Block strong ocean waves
Coastal dunes are not restricted to barrier islands, although all barrier islands have at least small dunes
Dune Formation and Distribution
Sea breeze and land breeze
Sand shadows
Gravel lag
Much of the wind-blown sand accumulates just landward of the active backwash
Obstructions
bedrock cliffs
vegetation
existing dunes
human construction
Dune Ridge (linear arrangement of dunes, one dune wide; called the foredune ridge)
Dune Dynamics
Dunes are quite vulnerable to even the modest storm
Rising sea levels exposes dunes to further erosion
Wind can cause the migration of part or all of the dune
blowover
angle of repose
migrate landward
Barrier Islands
Barrier islands are characteristic off the coasts along trailing edge coasts
*They form as sediment accumulates by the combined action of waves and wave-generated longshore currents
*The barrier islands protect the landward part of the coast against wave attack; include:
- barrier beaches
- barrier spits
- barrier reefs
Barrier Islands
wave-dominated and mixed-energy depositional systems
make up 12-15% of the Earth's outer coastline
relatively young: < 7000 years old
accepted theory of origination: waves caused sediment to accumulate in an upward shoaling fashion that eventually led to a supertidal sandbar
BarrierIsland Components
Backbarrier
Washover Fans
Lagoons
TidalInlets
Tidal Deltas
ebb delta
tide dominated
wave dominated
flood delta
tide dominated
BarrierIsland Types
Waves dominant - long and narrow
Mixed wave-tide dominant - drum stick appearance - longshore current is interupted at an inlet and more sediment is deposited at mouth of inlet
Davis, Chap. 7
Bertness, Chap. 5
Shumway (reading TBA)
Problem 2 Due - Tuesday
Tidal mixing (salinity variations)
Productive ecosystems (high organic content, high biotic diversity, complex behavioral interconnections)
Often subject to algal blooms (red tides), due to organic input, high temperatures, and poor mixing within the estuary
Seagrass Communities
Highly productive habitat, dominated in New England by eelgrass, Zostera marina
Important habitat areas for important commercial fish and shellfish species
Extensive soft sediments at base of grasses where a rich biotic community thrives (see food chain)
Many restoration programs in place
Tidal Mudflats
Soft muds, exposed at low tide, excellent habitat for burrowing animals
Molluscs, annelid worms, small arthropods
Productive community, heavily dependent on detritus food chain
Important habitat for commercial shellfish
Quahags, soft-shell clams, scallops
Salt Marshes
Dominated by grasses (Spartina alterniflora in Rhode Island), interspersed by tidal streams
May contain a mudflat area or salt pond (see photos)
Highly productive community, high biodiversity
Nursery area for many fish & shellfish
Complex food chain (detritus type)
Many restoration programs underway
Coastal Ponds
Shallow ponds, which may or may not be directly connected to the ocean
Ideal habitat for shellfish, especially oyster beds (lowered salinity blocks presence of oyster drill)
Rhode Island once a major producer of oysters for the East Coast)
Also called “salt ponds” (protected under the R.I. CZM Plan); SEE HANDOUT
Threatened by boating excesses
Mangrove Swamps
Found in southern waters, dominated by mangrove trees (keystone species)
Creates ideal habitat for animal life (see photos)
Protection from wave action; high organic content
High biodiversity
Complex food chain
Rocky Intertidal Zone
Rocky intertidal zone exists between high and low tide (area below low tide line is called the subtidal zone)
Rock pools (also called tide pools) form between rocks
Challenges to Organisms
How to cling to rocks in strong wave action
How to withstand desiccation in summer low tides
How to deal with salinity variation in summer (increased) or in spring/fall storms (diluted)
Home to coelenterates (sea anemones), molluscs (snails, mussels), crustaceans (crabs, lobsters, gammarids, copepods), echinoderms (starfish, sea cucumbers)
Green, red, and brown algae common
Examples of Rock Pool Algae: Cladophora, Polysiphonia, Fucus, Ascophyllum
High diversity of species and interactions among the inhabitants, with elaborate food chains
Coral Reefs
Coral Reefs have very high biotic diversity, especially in tropical waters
Every kingdom represented, with dominance by the coral animals (coelenterates) and their symbiotic algae
Rich in fish life, occupying every possible niche on the reef
Complex food web, with many behavioral adaptations for sharing the reef
Coral reefs endangered throughout the world
Summary
Estuarine environments have high biotic diversity, and are highly adaptable
Characterized by changing dynamics (salinity, tidal exchange, temperature)
Feature highly complex food webs and behavioral interconnections
Important support systems for coastal regions; support deep water fisheries
Glossary of terms
Seagrass Community
Tidal Mudflats
Coastal Ponds
Salt Ponds
Mangrove Swamps
Rock Pools
Coral reefs
Benthos
Productivity
Keystone species
Biotic diversity
Tidal mixing
Red tides
Toxic dinoflagellates
Phytoplankton
Zooplankton
Students are expected to be familiar with terminology and concepts, and to demonstrate a basic mastery and understanding of all assigned materials.
Examination will include a few short answer questions where students will construct written responses - Students may bring ONE PAGE of notes to use for the short answer questions! No phones/no laptops.
Some questions will address problem-solving situations where students will need to understand the issue or problem, identify solutions and/or intervention strategies.
Specific Review Topics for Exam I - 28 October 2021
Exam Topics/Outline for Overview of Coastal Geology/Ecology
Weeks 1-6 - SYLLABUS
Coastal Research (WW II)
Major differences between the West Coast and East Coast (U.S.)
Geological time period for coastal processes (Level I, Level II, Level III processes) - examples of processes from each level
Coastal Processes - short term vs. long term (Waves, currents, tides; climate change; mountain formation and erosion)
Erosion vs. deposition (erosional or depositional shorelines)
USGS Types of Coasts (Rocky shores, Sandy beaches, Coastal wetlands, Coral reefs)
Tsunami (Causes; Aceh, Indonesia Tsunami 2004; Fukushima, Japan Tsunami at Fukushima 2011; Indonesian Tsunami - Palo 2018)
Links:
https://www.youtube.com/watch?v=ObgaXv3qhAw
http://www.iaea.org/newscenter/news/2013/japan-basic-policy-full.html
https://reliefweb.int/disaster/eq-2018-000156-idn
Continental drift and sea floor spreading; Alfred Wegener
Hypothesis evidence - include paleomagnetic evidence; Plate Tectonic mechanism)
Lithosphere and Asthenosphere
Mechanism
Driving Force
Plate Margins
Divergent Plate Margin
Convergent Plate Margin
Subduction Zone
Collision Zone
Leading vs. Trailing vs. Marginal Edge Coasts
Where located in the U.S.
Sinking and uplift of tectonic plates (see USGS Tutorial on Plate Tectonics) Visit website: http://pubs.usgs.gov/gip/dynamic/dynamic.html
Ice Ages
Causes of Sea Level Change
Subsidence due to compaction and fluid withdrawal
Isostasy - subsidence and rebound of the lithosphere
Climate fluctuations
Advance and retreat of ice sheets
Tectonic activity
Downwelling and Upwelling
Review of Coastal Ecology Issues
Factors affecting population density along coasts
Connections between human activity and damage to coastal regions
Complexities of mixed uses for coastal lands
Ecological values of coastal resources
Stakeholders in Policy Matters
Examples of legislation protecting U.S. coasts
(e.g., Coastal Zone Management Act, Coastal Barrier Protection Act)
Coastal Problems & Challenges
(Examples: Storms, Erosion, Flooding)
(How do physical features and human activities converge to enhance these effects?)
(How can we design better approaches that match human alterations to natural processes?)
Coastal Planning Issues
Loss of Wildlife Habitat (causes, avoidance strategies, increased respect)
Importance of nutrient additions to shallow water coastal ecosystems (nitrates, phosphates)
Sources of the nutrient enrichment (sewage, agriculture, golf courses, sewage treatment systems, etc.)
Coastal Ecosystems (examples, links between biotic and abiotic factors)
Variations in biotic communities on different coasts (form and function adaptations)
Importance of coastal plains
Zones of the ocean (pelagic/benthic/planktonic)
Factors affecting life in the oceans
Types of coastal ecosystems- recognize illustrations of different habitats
(estuaries, salt marshes, rocky shores, sandy beaches, mangrove swamps, coral reefs)
Effects of climate change on coastlines and human communities
Additional Terminology for Exam
barrier beaches and barrier islands
benthic communities
Coastal Barriers Protection Act
coastal lagoons (also called salt ponds)
coastal zone (definition)
Coastal Zone Management Act
collision zone
CRMC - Rhode Island
CZM planning
estuaries
climate change and coastal shorelines
intertidal zone
leading edge
lithosphere
mangrove swamps
marginal edge
NOAA
planktonic community
plate tectonics
rock pools
salinity
salt marshes
stakeholders
subduction zone
trailing edge
ON THIS EXAM, IT IS IMPORTANT TO BLEND INFORMATION LEARNED FROM
LECTURES, DISCUSSION AND TEXTUAL READINGS!
Students are expected to be familiar with terminology and concepts, and to demonstrate a basic mastery and understanding of all assigned materials, including textual reading and posted lecture outlines.
Examination will include some short answer questions where students will construct written responses.
Some questions will address problem-solving situations where students will need to understand the issue or problem, and to identify solutions and/or propose intervention strategies.
YOU MAY BRING WITH YOU 2 PAGEs OF PRINTED NOTES (one side only) WHICH YOU WILL SHOW AT THE START OF THE EXAM AND SUBMIT AT THE END OF THE EXAM. ADVICE: Write your own study guide! Don't record things you know well.
Exam covers lecture and class discussion for Weeks 7,8,9,10, 11 and 13 on the Course Syllabus (Power Point lectures posted on CANVAS)
Additional Sources: Assigned Text Chapters and Handouts
Review Material (Weeks 1-6)
Physical and Ecological Characteristics of Estuaries (Lectures 1-C and 6-A)
Type of Circulation Within Estuaries
Salinity Characteristics - stratified - partially mixed - fully mixed
Tidal flats
Between high and low tide - model of sediment transport by tidal action (slower movement of water leads to settlement of particles)
Salt marshes
Type of grasses and other vegetation - trap sediment - burrowing animals
Common marsh grass in Southern New England - Spartina alterniflora
Seagrass communities
Grasses rooted underwater; high biodiversity - nursery areas for small fish and shellfish
Example in Southern New England - Eelgrass Communities - Zostera marina
Rock Pools
Located in intertidal zones on rocky coasts; high energy; strong wave action; organisms eurythermal and euryhaline
Mangrove swamps
Located in intertidal zones in warmer waters - roots form thickets - sheltered habitats; storm protection
Living Communities in Estuarine Environments - Trophic Dynamics and Food Webs
Canvas Lecture #7 and accompanying chapters in the Bertness text for illustrations and explanations of the trophic relationships and the ecological challenges for the organisms in each community.
For each of the biotic communities listed above, know the following:
Main characteristics of the ecosystem
Physical challenges to organisms (waves, currents, sediment, temperature, low tide exposure)
Major chemical variations (salinity, dissolved oxygen, nutrients)
Biological dynamics (main predators, relative shelter/exposure, biodiversity)
Sediment-dominated? Wave dominated?
High energy or low energy habitats?
Planktonic or Benthic Communities?
Grazing food chain dominant? Detrital food chain dominant?
Basic strategies for organisms in that environment?
Basic Taxonomy of the Organisms (which category of living organisms):
Canvas Lecture #7
KNOW the five Kingdoms and be able to differentiate them; know examples of organisms for each Kingdom:
Prokaryota (sometimes called Monera)
Protista
Plants
Animals
Fungi
Be familiar with the following PHYLUM groups of Animals and know an estuarine community where each would likely to be found (e.g., Molluscs in Salt Marshes or Mud Flats; or Echinoderms such as sea stars in Rock Pools, etc.)
(Recognize a description of the phylum group and be able to match a familiar organism to its phylum)
Cnidarians (hydroids, sea jellies, examples include sea anemones & corals)
Mollusca (clams, mussels, snails)
Arthropods (crustaceans such as lobsters, crabs, shrimp, copepods in zooplankton)
Annelids (polychaete worms such as the clamworm, Nereis)
Echinoderms (sea stars, brittle stars, sand dollars, sea cucumbers)
Chordates (fish, birds, sharks, reptiles)
What are the important plants in estuaries? (Include seaweeds)
What are some different kinds of Protista (protozoa and algae) in estuaries?
What kinds of research projects are done in estuarine environments?
What is the difference between populations and communities?
More Recent Material - Weeks 9-13
Coral Reef Ecology and Research - Canvas Lecture #12
Be able to describe the following behaviors commonly found on reefs and give an example of each:
Symbiosis
Predation
Parasitism
Competition for Space, Food, etc.
Threats to Coral Reefs Worldwide
Bleaching Episodes - Implications
Response to Bleaching Events - End Results - Research Studies
Importance of Zooxanthellae Algae to Reef-Building Corals (e.g., Acropora)
Coral Diseases
Present Condition of Great Barrier Reef
Be able to describe at least one example of a coral reef protection program
Be familiar with the Team Presentations on each coral reef (Web links will be posted on CANVAS).
Threats to Fisheries - CANVAS Lecture #8
Major threats and root causes for the decline in fisheries worldwide
Importance of salt marshes and estuaries in New England fisheries
Importance of coral reefs in protecting coastal fisheries - food supply implications
Legal Infrastructure Important to Coastal Management (U.S. and International) - Week 12 - Canvas Lectures #3 and #9
NOAA
U.S. Department of Fish & Wildlife
Magnuson-Stevens Fishery Conservation and Management Act (MSFCMA)
EPA
Coastal Zone Management Act (CZMA)
Rhode Island CZM Plan (Role of CRMC; Harbor Management Plans; Coastal Flooding Assessment Tools)
United Nations agencies and agreements - e.g., UNEP, IPCC, Law of the Sea, etc.
Climate Change and Coastal Resiliency Issues - Canvas Lectures #7B, 10 and 11A
Impacts of rising sea level, increased intense storms, acidification of seawater and effects on molluscs, arthropods and coral reefs, and relocation of species
Effects on island nations and heavily populated coastal regions
Need to change and upgrade infrastructures in coastal communities
Know at least two examples of effective Coastal Resiliency Programs
Commercial Utilization of Coastlines - Class Discussions - Lecture
State CZM Plans
Harbor Plans
Energy Production and Impacts
Terminology
No specific terms - use guidelines above
TAKE-HOME QUESTION: Team-Based Response (Prepare an annotated food web for the Reef selected for your website presentation). Worth 20 points.
The exam will be taken using the CANVAS Exam Tools, with Respondus Lockdown Browser.
Beatley, et al., Chap. 4,5
Other Readings TBA
Field Trip Reports Due
Fisheries in Trouble
World is running out of fish
More than 40% of world’s fish have been overfished
(U.S. National Marine Fisheries data)
Four of the 17 major fisheries are commercially depleted; nine others in serious decline
(United Nations Food and Agriculture Office data)
Cambodia, Thailand, and Taiwan expanding navies to protect fishing grounds
Fisheries in Trouble (continued)
New England fishing grounds in crisis
Dramatic declines in fish stocks
Haddock, cod, and flounder were 75% of the catch in 1960s (now about 25%)
Few menhaden in the Gulf of Mexico
Economic losses due to depleted fish stocks
About $350 million in 1990
Loss of around 14,000 jobs
Fisheries in Trouble (continued)
Abundance Statistics for Rhode Island
Oysters (15 million lbs. of meat in 1910; 0.01 million lbs. from 1955 to 1996)
Winter flounder (<0.1 million lbs. in early 1950’s, to 9 million lbs. in early 1980’s, to 1 million lbs. in the late 1990’s)
Fish populations vary widely; e.g. Striped bass fishery collapsed (1970’s) and rebounded to 1 million lbs.(1990’s)
Economic Threats in RI
Landings of commercial fisheries in RI are valued at approximately $75 million
Economic impact of seafood production in RI is estimated to be approximately $700 million
Recreational fishers make about 1 million fishing trips annually in RI, valued at approximately $150 million
Reasons for Decline
Three main reasons for fishery decline
Overfishing
Habitat Destruction
Bycatch (“collateral damage”)
Stakeholders in fishery problems
Commercial fishermen & marine industries
Tourists & tourism providers; consumers
Seafood industry (restaurants & suppliers)
Scientists and policy makers
Role of Magnuson Act
Magnuson Act: Fishery Conservation & Management Act
Set 200 mile limit as U.S. waters
Restricted foreign vessels from overfishing; did not prevent U.S. boats from overfishing
Technological improvements on boats, e.g., Factory trawlers (400 ft. vessels that catch and process fish onboard)
Other Proposed Legislation
Gilchrest Bill to limit overfishing
Defined and prohibited overfishing
When in doubt, biology would outweigh economics
Restrict construction on wetlands and shorelines
Ban mechanisms that cause bycatch
Tighten conflict of interest rules for members of regional fishery councils
Other Proposed Legislation (continued)
Sen. John Kerry and Rep. Larry Studds from Massachusetts
Require Mass. Fisheries Management Council to develop a plan for rebuilding New England groundfish stocks
Create a $5 million annual fisheries reinvestment program to encourage fishing for underutilized species
Technological Issues
Bottom trawlers that scrape away the living benthic community, e.g., used for scallops and bottom fish
http://www.sfos.uaf.edu/npmr/projects/fisheries/108/pgal/photo08.html
Small mesh nets that capture unwanted fish that are killed or injured and then thrown overboard
E.g., Shrimp boats capturing finfish as bycatch
GIS equipment for fish-finding
Widespread utilitization
Precision of satellite technology
Achieves broader reach of fishing vessels
Economic Issues
Global markets create insatiable need for fish and fish byproducts
Fishing boats and gear are expensive and most fishing companies are in debt
Operating expenses are also high
Pushing the limits of the resource become crucial in order to survive
Fisheries Planning
Historically, fisheries management plans are usually based on a single-species model
Do not accurately reflect how different species of fish depend on each other
Fish species are connected with their surroundings
Regional Fishery Management Councils
Regional Councils are required by federal law
Controversy regarding membership on the councils (representative of all stakeholders, or industry-controlled?)
Principles of Management
Management for species preservation and long term viability of fishery (limit catch by species or quantity)
Management for short term economic relief to fishing industry (short term limits, or no limits)
Switch to underutilized species
Management of marine ecosystems (need solid science and extensive data)
Managing Marine Ecosystems
Using past trends to design better fishery management plans
Long history of exploitation
Harvesting (fishing) based on economic value of a species, not on its ecological role in the marine ecosystem
Leads to local extinctions and worldwide ecosystem damage
Resultant loss of keystone species may be irreversible
Shift toward pelagic, rapid-turnover, low-value species
Harvest limits may seem safe for a single species, but cannot maintain ecosystem viability
Fishing patterns have resulted in less sustainable ecosystems
Managing Marine Ecosystems (continued)
Aim toward a “rebuilding” policy, not one for “sustaining” current catches and biomass
Planning needs to integrate local and traditional environmental knowledge (TEK)
associated with aboriginal and indigenous peoples
Neet to set aside large, “no-take” reserves
Reintroduction of high-value species which once were endemic to an area
Impacts of Catch Limits
Major economic impact in the fishing industry (lost jobs, loan defaults, etc.)
Reduction of fish and shellfish for seafood industry
Reduced supply of fish and shellfish
Higher consumer prices
Changes competitive dynamics for seafood restaurants
Other Solutions
Use of mariculture or aquaculture to provide new sources of seafood
Culturing processes also generate pollution in the coastal zone (BOD levels, algal blooms, oxygenation problems)
Must be linked with efforts by seafood industry to market new products
Readings
(Available as Handouts or on Bryant’s Electronic Reserve)
Pitcher, T.J. 2001. “Fisheries managed to rebuild ecosystems? Reconstructing the past to salvage the future.” Ecological Applications 11(2):601-617.
DeAlteris, J.T., M. Gibson, L.G. Skrobe. 2000. Fisheries of Rhode Island (Working Draft, prepared for the Narragansett Bay Summit, 4/14/00).
Margolis, J. “World running out of fish.” Chicago Tribune (Handout)
Saltus, R. “Scientists: Big picture needed to up fish stocks.” (Handout)
Oceans & Fisheries Data Table 13.1. World Resources 1998-99. (Handout)
Summary
Fish are an important food item
Fisheries are in decline worldwide
Causes include overfishing, expanded technology, deteriorated coastal wetlands, ocean pollution,
mining and extraction activities
Solutions are complex and difficult to implement
Glossary
Demersal fish
Flounder, halibut, sole, cod, hake, haddock, bass
Pelagic fish
Jack, herring, mullet, sardines, anchovies, tuna, mackerel
Overfishing
Catch exceeds replacement rate
Bycatch
Taking unwanted species while fishing
Regional Fishery Mgmt. Councils
Develop Mgmt. Plans to protect fisheries
GIS Techniques
Geographic Informations. Systems used for computer mapping
Questions to be Addressed
How should quotas be set for fish? Can we depend on computer models?
Who should have the last word on fishery management plans?
How can we avoid bycatch?
Protection plans will cause seafood prices to rise; how will consumers react?
How does fishing for “underutilized” species affect food chains?
What is the relative role of coastal wetlands in preserving fisheries?
Can we manage marine fisheries in a sustainable way? Is ecosystem management a better approach?
What countries are heavily dependent on fish as a food item (see chart)?
Will declining fisheries have a great effect on developing nations than on developed nations?
Will global warming affect fish species?
Ocean Dumping - Harbor Dredging - Sewage Treatment - Shipping Wastes
Oceans are vast (70% of earth's cover) and represent attractive short term solutions for waste disposal
Federal legislation and regulation enacted in 1972
Reduced the number of ocean dumping sites, but ocean dumping continues to degrade the oceanic environment
If population growth in coastal regions continue, increased amounts of wastes will end up in the oceans
Types of Wastes
dredge spoils - industrial and municipal discharges removed to generally improve navigation
industrial wastes - acids, refinery wastes, paper mill wastes, pesticide wastes, and assorted liquid wastes
sewage sludge - solid material that remains after municipal wastewater treatment
construction and demolition debris - cinder block, plaster, excavation dirt, stone, tile, and other materials
solid waste - refuse, garbage, or trash, explosive, radioactive wastes, and untreated urban sewage
Health hazard - shellfish have been found to contain organisms that produce diseases such as polio and hepatitis
At least 20% of the nation's commercial shellfish beds have been closed because of pollution
Beaches and bays have been closed to recreation uses
Effects on ocean life
marine organisms - result in death or retarded growth, vitality, and reproductivity
reduction in the DO (dissolved oxygen) - increased BOD as a result of decomposition of organic waste lowers the O2 content necessary for marine life
eutrophication - caused by nutrient-rich waste in shallow waters resulting in killing algae that may wash up and pollute coastal area
Habitat Changes
Baltic and North Seas: urban and agricultural pollutants have raised the concentration of nutrients in the water
Algae blooms of toxic algae are common -1988 an algal bloom was responsible for killing nearly all marine life to a depth of 50 ft (e.g. Pfiesteria piscicida)
Major ecosystems such as coral reefs, estuaries, and salt marshes and mangrove swamps are threatened by ocean pollution
Oceans are giant sinks for materials from the continents, and parts of the marine environment are extremely fragile
Effects on Marine Organisms in the Planktonic and Benthic Environments
Upper few mm of the ocean tend to concentrate pollutants, such as toxic chemicals and heavy metals
One study reported that concentrations of heavy metals in the upper 3 mm are from 10-1000x higher than in the deeper waters
The base of the food chain consists of planktonic life abundant in the upper 3 mm of the ocean water
Sediments can also trap pollutants (e.g., Prudence Island studies)
Effects on Humans
Contaminated marine organisms may transmit toxic elements or diseases to people who eat them
A loss of visual appeal when beaches and bay become polluted
The Conflicts Around Ocean Dumping
Ocean areas near the shore are most subject to ocean dumping and are the most desirable as fisheries
Examples:
Los Angeles: for more than 30 years, sewage and sludge have been dumped several miles offshore into Santa Monica Bay
rate of flow was about 400 M gallons per day, of which only about 15% had secondary treatment
LA successfully fought state and federal regulations to avoid providing secondary treatment for all sewage
Santa Monica Bay became seriously polluted by the sewage and by other waste disposal dating back to the 1940s - oil refinery wastes, cyanide, and PCBs
Concerns over potential health-related issues finally forced LA to spend $172 M for secondary treatment
Water quality in the New York Bight (off the coast from New York City) is greatly reduced and in some areas there are "dead zones"
Same problems near most large coastal cities (Asia, South America, Africa, etc.)
Dredge Spoils
Represents the vast majority of all ocean dumping -conducted to primarily improve navigation
Usually disposed of only a few km away
About 1/3 is seriously polluted with heavy metals and other industrial, municipal, and agricultural wastes
Oorganic pollutants are adsorbed to the organic portion of the sediment; polarity (hydrophilic) vs. non-polarity (hydrophobic)
Long range alternative to disposal of dredge spoils is to phase out ocean disposal
Not currently possible to do so because of the volume of sediment involved
Dredging
Dredging is the process of removing material (sediment, debris, and organic matter) from the bottom of the water body in order to make it deeper
Allows for the commerical and recreational water traffic such as oil tankers, cargo ships, tour boats, ferries, and larger power or sailboats to navigate safely
Providence River channel leading to the Port of Providence has not been dredged in 25 years
Estuary is filling with the continuous delivery of sediment from the watershed
Harbors, channels and rivers eventually fill in if dredging is not performed
Threatens safe navigation for boaters and straining the economic viability of marinas
Over 25 facilities in Rhode Island need to dredge a total of over a million cubic yards of sediment
Port of Providence is the entry point for 98% of RI's fuel supply
Portions of the channel are so shallow that large vessels must off-load their cargo onto barges in the middle of the Bay
Shallow channels may cause oils spill accidents; e.g. North Cape oil spill off the coast of Matunuck, RI - large lobster kill - damage to coastal ponds
Without access to the port fuel oil prices could increase
Providence River dredging project - 17 mile navigation channel connects Providence Harbor to deep water near Prudence Island
Plan to restore the channel from 30 ft to its authorized depth of 40 ft - never-ending saga of studies accessing dredging
RI is the only state in southern New England NOT to have a permanently designated disposal site
Coastal Resources Management Council (CRMC) has contracted Army Corps of Engineers (ACOE) conduct an assessment to select a permanent offshore disposal site
Past sites for dredged materials - somewhere close to the harbor such as wetlands or marshes, or deeper locations in the estuary
Sediment accumulation in the upper reaches of Narragansett Bay may be contaminated with heavy metals and toxic compounds that pose a health risk
Require special disposal methods - capping with clean sediment to isolate the contaminated sediment from the surrounding sea life and water
Save the Bay is advocating prevention of in-bay disposal and the exploration of beneficial use of dredge materials
Environmental laws (e.g. CWA, RI Coastal Zone Management Act) have led to restrictions on where dredged materials can be dumped and has led to the development of innovative solutions:
Beneficial use of dredged materials - valued instead of simply thrown away
Examples: construction materials;cinder blocks, cement structures (used in highway construction projects in NY/NJ)
Beach nourishment - Block Island's Old Harbor - sediment is deposited offshore and mixed with sand to renourish State Beach - need to consider toxics
Landfill cover/capping
Brownfields redevelopment - reclamation of contaminated, former industrial sites
Flounder spawning ground: winter flounder have had a difficult time recovering in Narragansett Bay
Possible impacts on fisheries if dumped in-bay or on shore
Spoils were dumped 10 miles south of Pt Judith, which is a flounder migratory area
URI scientists conducted baseline studies of the upper Bay prior to and during dredging
Dredging was avoided in the upper reaches of the river during the spawning season
Block Island residents continue to worry that they will be impacted by the sediment dumping
Unique beauty of seacoasts
Increase in population density of coastal areas has brought increased demand for water related activities and uses of harbors and shoreline areas
Changes in coastal land use have led to user conflicts and water quality degradation
Example: Narragansett Bay
Named one of the 10 most endangered places in America by Scenic America
One of a few estuaries in the country that is still relatively free from heavy industry
Narragansett Bay supports a thriving and diverse ecosystem of aquatic life, shore birds, plants, and marine animals
Support a small but significant commerical fishing industry
Tourism adds over $2 Billion annually to the local economy
Narragansett Bay Coastal Management Program
Rhode Island's Coastal Resources Management Council (CRMC) has enacted regulations and planning programs designed to stimulate coastal communities to develop comprehensive municipal harbor management plans (HMPs)
Purpose of HMPs
Provide a comprehensive and continuous evaluation of municipal harbor management activities
Provide for a detailed assessment of current and/or proposed municipal harbor mangement programs, ordinances or Regulations to ensure compliance with applicable regulatory and management requirements of RI
Delegate the primary management authority and respoonsibilities of consistent local harbor management programs to the municipalities
Each municipality will do the following:
Provide a long range vision for controlled growth and development of harbor and shoreline areas
Integrated the Harbor Management Plan with a community's comprehensive land use plan and local zoning regulations
HMPs allow a community to guide expansion of waterfront development, marinas, mooring fields and other recreational boating activities
HMP Process
Successful harbor plans have had the most participation from the widest spectrum of the general public
Process requires that communities consider as many interests as possilbe when drafting the plan so as to represent the needs of the community it is designed to serve
Issues addressed by a HMP
Shortage of public and private marina space and boat launching areas
Need or potential need to dredge or redredge navigation channels and marinas
Encroachments within federally maintained navigation channels
Need for more efficient utilization of mooring space within anchorage areas, for more mooring space, and allocate moorings fairly for private and commercial use
Need to provide safe harbor and shore access for transient vessels
Need for improved and expanded public recreational facilities and opportunities
Need to protect unique wildlife areas; shore and water habitats
Desire to improve and protect commerical and recreational shellfishing
Potential for expansion of existing, or development of new, water dependent uses along the developed urban waterfronts
Need to provide approopriate restrictions on water uses and users in order to minimize conflicts between competing activities
Need to coordination of harbor information and management activities among agencies, commissions, and departments on the state, federal and local levels
Prevention or restoration of periodic or long term water quality problems related to recreational boating
Required elements of a HMP
Ensure public access
Ensure water quality
Develop a municipal mooring management plan
Storm preparedness strategies
Selected Iissues
Raw sewage discharge
Most immediate environmental threat to the health of the Bay is the annual discharge of about 2.2. B gallons of untreaed sewage into waterways in the Upper Bay area after heavy rainfalls
Aging combined sanitary and stormwater sewage system (combined sewer overflows - CSO) cannot handle severe wet-weather events
Due to dangerously high bacteria levels, leads to the closure of beaches and shellfishing beds
Solution - collection of drain waters during heavy rain events and then pump to a treatment plant after the storm
City of Providence constructed a large underground tunnel for storage of collected stormwater
Restoring Natural Habitats
300 years of industrial development- much of the damage cannot correct itself naturally
Proactive approach to restore salt marshes, eelgrass beds, fish runs, etc.
Create aninformation systemto help make decisions about habitat restoration
Save the Bay (a Rhode Island NGO) has played a significant role in supporting and encouraging habitat restoration
Port Development - Quonset Point - Davisville
In response to growing international trade the Quonset-Davisville site is used to import automobiles and seafood
Commercial container shipping in the region is expected to continue growth once economic recovery improves
Expansion issues:
Proposal to deepen harbor to 50 feet - threaten to alter circulation patterns and disrupt migrating routes for lobsters and fish
Vessels create new pathways for non-native species to invade the Bay, threatening the survival of native species and the Bay's ecosystem as a whole
Expansion of the port would increase truck traffic by about 1,600 truck per day
Require use of significant acres of land to accommodate a major port expansion
Suggested solution:
Analysis of the major environmental impact (environmental impact statement - EIS)
Create a smaller, less intrusive port or light industrial/commercial park that more closely matches local needs and economics
Stakeholder Groups
Tourists & tourism providers; consumers
Seafood industry (restaurants & suppliers)
Scientists and policy makers
On the Water
Boom/sweepers/skimmers
Primarily to deflect and collect oil
Used on water or just below it
Booms needs constant attention
Great amount of manpower is needed
collecting - cleaning - transporting - disposing - burning
Burning is very effective - Dangerous to marine life
Effects of burning are better then having an oil spill in the water
Dispersants
Used to disperse the oil in great amounts of water and break up oil slicks
Dispersants help to keep oil off beaches and away from marshes
On the Shore
Chemical Cleaning (e.g. Corexit)
Difficulty collecting the chemical (not very successful)
Hot Water and High Pressure
One of the most common clean-up tactics
Became standard shoreline treatment
Kills off much of the life on the shoreline
Responders must take into consideration that any damage from the treatment is acceptable based on the potential threat of oil
Manual Treatment
Used where there was only a little amount of oil
Manual treatments to pick up oil (shovels, rakes, absorbent material, hands)
Mechanical Treatment
Use of machines to remove oil
Front-end loaders, tractors, and other mechanical units
Overall - the effects of the machines are worse than that of the oil
Biological Treatment
Bioremediation - in situ
Oil degradation by oil-degrading microorganisms
Addition of nutrients (fertilizer) to increase microbial growth
Bioremediation is especially effective to "polish" contaminated site
Lessons learned - Prevention
Ship Design - cost is a concern, but worth the effort and cost over time
Double Hull Ships
Leak Detection and Tank Overfill Devices
Pressure monitors
Transportation
Tanker tug - Escort Requirements
only mandatory regulation
Restricted Areas
Training and Certification
Gaytha A. Langlois, Ph.D.
Condylostoma sp. - an oil-tolerant marine ciliate
Role of Protozoa in Aquatic Food Chains
Bacteria and protozoa may account for 50% of benthic respiration
Protozoa show diverse patterns of interspecies interactions
Elaborate predator/prey relationships may be altered by perturbations
Effects of Land Use on Island Ecosystems
Greater human activity may result in increased contact with mainland species
Increased development may bring pollution and/or change evolutionary dynamics
Pollution events such as oil spills may alter biotic communities significantly
Leaking underground storage tanks also produce long-lasting impacts
Overview - Oil Contamination Study on Prudence Island
Background Information
Prudence Island (“Chibacuwese”) located in Narragansett Bay - purchased in 1637
South end of island is protected from further development; part of the National Estuarine Sanctuary Program
Samples taken at T-wharf (41o34’53”N, 71o19’18”W)
U.S. Navy fuel depot site, resulting in fuel tank leakage and a subsequent bioremediation project
by the Army Corps of Engineers (completed in 2001)
Prudence Island Site
Overview - Oil Contamination Study (continued)
Description of Observations
Samples taken from 2 sandy beaches near bioremediation area (1999-Present)
Samples taken from top 1 cm. sediment
Physical parameters recorded (temperature, salinity, dissolved oxygen)
Hydrocarbon analysis conducted 2000-2001
Phase Contrast Microscopy (live observations of protists and microalgae)
Hypotheses
Petroleum HCNs will be similar to compounds found in the bioremediation area
Volatile organic compounds will be high as a result of biosparging technique
Oiled communities will resemble those found in earlier mesocosm studies
Mesocosm Studies at MERL
MERL (Marine Ecosystems Research Laboratory), Graduate School of Oceanography, University of Rhode Island
3-year study of the effects of petroleum hydrocarbons on estuarine/marine ecosystems
General Findings from Studies at the Prudence Island Site
Oil/gasoline residues are visible in the intertidal zone
Petroleum HCNs found in intertidal zone are similar to profiles for nearby monitoring wells in bioremediation area
VOCs are present in intertidal samples (BTEX profile), indicating presence of residues of gasoline
Changes in Biotic Community
Microbial communities are similar to those found in other oil contaminated sites (emergence of large, diatom-eating ciliates; reduced numbers in selected microinvertebrate populations; high numbers of diatoms)
Patterns are similar to those found in previous MERL studies and elsewhere
Oiled microbial communities are characterized by different species groupings, and show
altered community structure and trophic dynamics
Studies are ongoing; database will remain accessible via a Web Site (including previous field and mesocosm studies)
Figure 1: Changes in Populations in Control & Oiled Marine Microbial Communities
(see Handout)
Table II. Comparison of Indicator Species in Control & Oiled Habitats
(see Handout)
Summary
Community responses to petroleum contamination are complex
Restructured communities may survive, but are not necessarily aligned with the natural food web
More research is needed
Check on ongoing results at http://web.bryant/~langlois/islands
RHHGB, Chap. 24, Selected Readings
Challenges to Policy Makers
Complexities of the ecosystems
Insufficient data and findings about natural habitats
Multiple users, each with a distinct set of values and preferences (boating, fishing, residency, hospitality industry, land development, scientists, elected officials, transportation, etc.)
Difficulty of being fair and equitable
Curbing fish harvesting causes economic harm to fishing industry
Limiting land use reduces profit to be gained by landowners
How to share technical information in a useful way (scientific reports being used by policy makers)
Coasts vary in different geographic regions (see land forms on next slide)
Need nationwide guidelines with some regional flexibility
Need broad input from stakeholders in the preparation of new laws and regulations
International Agreements
Mostly focused on continental shelf resources
Conflicts of interest and concern over accessibility, security, and wealth
Emphasis on regulating pollution prevention, containment, and cleanup standards
International Maritime Organization (IMO)
Technical agency of the United Nations
Responsible for maintaining standards and conditions relating to ship operations
in near shore and continental shelf waters
Promotion of maritime safety for the protection of the marine environment
Long-term plans to minimize global oceanic pollution through regulations and sharing technical information
Replaced the old "customary laws of the sea" first set up in the 19th century
IMO was set up in 1959, and has conducted about 30 "conventions" regulating international maritime activities
United Nations Convention on Law of the Sea (LOS)
Umbrella convention that addresses the allocation of ocean resources, nation by nation, and all areas of marine pollution
Provided for a more efficient regulatory system
Convention was signed by 119 coastal nations in 1984 (U.S., U.K. and West Germany would not sign)
Convention for Prevention of Marine Pollution
Implemented in 1975; U.S. signed
Deals with global ocean dumping Prohibits dumping of radioactive waste, industrial wastes, oil,
and other wastes deemed toxic, persistent and bioaccumulative
Aimed at wastes originated on shore
Convention for Prevention of Pollution from Ships-MARPOL
Implemented in 1983; updated in 1992
Regulates all forms of pollution from ships, except dumping (controls waste from operation of ships)
MARPOL was updated in 1992, following the spill of the EXXON Valdez
U.S. Navy is exempted from many of the regulations
Other International Organizations
UNEP
United Nations Environmental Program
UNCTAD
U.N. Conference on Trade & Development
OECD
U.N. Organization of Economic Cooperation and Development
Other International Organizations (continued)
WHO
World Health Organization
World Bank
Most of these organizations have focused on drafting good programs for ocean protection and management
Most are weak in enforcement
Coast Parallel Zones
Established by coastal countries and international organizations
Territorial Waters
Innermost zone (12 nautical miles wide)
Established by the U.S. LOS Convention III
Country has sovereign rights to economic resources, sea, and airspace
Foreign vessels have right of "innocent" passage, air space by permission
U.S. government gives coastal states jurisdictional rights out to 3 miles (CZMA)
Federal jurisdiction from 4-12 miles
Contiguous Zone
Originally established a maximum of 24 nautical miles from a coastal baseline
Country may exercise control needed to prevent infringement of its customs, fiscal, immigration,
or sanitary laws and regulations
200 mile limits were developed in the 1950s to 1980s (fishing rights and seabed mineral resources)
Countries set up Exclusive Fishing Zones (EFZ) and Exclusive Economic Zones (EEZ)
1983 - President Reagan proclaimed a 200 mile EEZ for the U.S.
High Seas
Outermost zone (all waters outside established EEZs and EFZs
No state can lay claim to sovereignty to the High Seas, and aggressive actions against
another state's vessels are prohibited here
U.N. International Sea-Bed Authority has jurisdiction over mineral resources
U.S. Federal Agencies
National Oceanic and Atmospheric Administration (NOAA)
Implements U.S. coastal zone management
Science for marine solutions
Studies of wetlands
Mapping of watershed and habitat change
Environmental satellite system called Coast Watch (tracks endangered sea turtles)
Prepares nautical and geodetic surveys of coastal areas
Administers a grant program for marine research
Works with states in implementing their coastal zone management programs
Manages National Marine Sanctuary Program
U.S. Army Corps of Engineers (U.S. Department of Defense)
COE conducts applied research and development related to navigable waterways, harbors, and coastal protection
Involved in all phases of civil works projects, from design to construction
U.S. Army Corps of Engineers provides technical assistance and funds projects
Involved in cleanup of coastal areas contaminated by military activity (e.g., Prudence Island in Narragansett Bay)
Oversees harbor dredging, coastal erosion prevention, inlet stabilization, jetties, groins, seawalls, restorations
U.S. Army Corps of Engineers also administers laws and issues permits for construction within navigable waterways, and limits discharge of material into these waterways
Federal Emergency Management Agency (FEMA)
Principle agency to deal with riverine and coastal flooding in the U.S.
Provides disaster relief to affected communities and states
U. S. Environmental Protection Agency (USEPA)
Funds scientific studies in the coastal zone
Contaminant research
Investigations into sea level change
Regulates discharge of coastal pollution, disposal of dredged material
Ultimate authority over the Corps of Engineers regarding dredging activities (Clean Water Act, Section 404)
Creates emission standards for airborne pollutants that might enter the hydrologic cycle
National Park Service (NPS)
Owns and operate holdings along the nation�s coastlines
Manage coastal barriers, shorelines, estuarine wetlands, and water bodies with migrating fish
NPS also manages National Seashores and National Lakeshores
Fish and Wildlife Service (FWS)
Also operates coastal preserves, including coastal barriers, shorelines, estuarine wetlands, and water bodies with migrating fish and birds
FWS manages the National Wildlife Refuge Program
Monitors endangered species
National Marine Fisheries Service (NMFS)
Focus on marine life resources, including conservation of fisheries and marine mammals
Oldest conservation organization (125 years of research, conservation, and management in 1996)
U.S. Coast Guard
(Patrolling coastal waters)
U.S. Geological Survey (mapping)
U.S. Natural Resources Conservation Service
(erosion prevention, good land use practices)
National Science Foundation
(major funding of scientific research)
Federal Legislation
Coastal Zone Management Act (CZMA)
Passed in 1972 (signed by President Nixon)
Administered by NOAA
Provided incentives to states to set up coastal zone management plans (federal grants for implementation)
Coastal states border the Atlantic, Pacific, Arctic Oceans, Gulf of Mexico, Long Island Sound, or the Great Lakes
Most coastal states now have a CZM plan
Consistency Provisions of CZMA
Federal programs must be consistent with the state's CZM plan
Gave states some control over federal activities
Valuable in influencing continuental shelf oil and gas development leases
Allowed for state oversight of federal highway, airport, military and flood control projects
Elements of a Coastal Zone Management Plan
Programs to help protect wetlands, lagoons, reefs, and other coastal habitats
Minimize property damage from coastal hazards
Improve recreational use of the coast
Encourage intergovernmental cooperation through standardization of policies
CZMA
Evolving law (reauthorized several times)
1990 Reauthorization
Coastal Zone Enhancement Grants Program
Coastal Nonpoint Pollution Control Prgram
CZMA has been a highly successful federal program
Heightened awareness and creative solutions for coastal threats
Coastal Barriers Resources Act (CoBRA)
Passed in 1982
Established the Coastal Barrier Island Resources System, administered by the National Park Service
Prohibits federal expenditures in undeveloped coastal barriers, including application of National Flood Insurance Program (NFIP)
Marine Protection, Research, and Sanctuaries Act (MPRSA)
Passed in 1972 to set up a system of marine sanctuaries, administered by NOAA
Marine Mammal Protection Act
Passed in 1972, to set up a permit system for taking marine mammals
Designed to protect dolphins and porpoises from inadvertent capture in fishing nets
National Flood Insurance Program (NFIP)
Designed to provide reasonably priced insurance in flood hazard areas
Intended to limit unwise development in flood plains (both riverine and coastal)
Reduce federal monies for flood control
Indirectly encouraged coastal development (national insurance cheaper than private)
Flood Disaster Protection Act
Stafford Disaster Relief and Emergency Assistance Act
Endangered Species Act (ESA)
Selected State Agencies
Some Goals for State Agenies
Public access to shorelines
Conservation of natural resources
Coordination with federal agencies
Streamlining governmental procedures
Public participation in coastal decision making process
Priority to coastal dependent uses
Florida
(entire state is a coastal zone)
Florida Coastal Management Program
27 state laws
Administered by Department of Environmental Regulation (Office of Coastal Management)
Assistance from Governor�s Office of Planning and Budget
Ongoing operations shared with Dept. of Natural Resources and Dept. of Community Affairs
Selected State Agencies (continued)
California
California Coastal Act passed in 1976
Conserve the states 1,100 mile coastline
Coastline Initiative
Balancing aesthetic preservation, protection of coastal agriculture, wildlife habitat protection, increased public access, energy development, and control of urban sprawl
California Coastal Management Program
San Francisco Bay Conservation and Development Commission
California Coastal Commission (rest of coast excluding San Francisco Bay)
Coastal Zone landward from Mean High Tide to 1000 yards inland (may reach inland 5 miles),
to seaward at the limit of territorial waters
California Coastal Management Program
Local governments (15 counties and 54 cities) have a Local Coastal Program
California State Coastal Conservancy acquires land to restore, protect and manage the coast
Selected State Agencies (continued)
Rhode Island
Coastal Resources Management Council
Politically appointed council that oversees the Rhode Island Coastal Zone Management Plan
Coastal Resources Center
Scientific studies of coastal resources
Staff assistance to the CRMC
Associated with the University of Rhode Island
CRMC activities
Administer permits for alteration and development in coastal zone
Funding for resource protection and restoration programs
Educational programs for schools and universities
Coordinates Special Area Management Plans (SAMP)
Summary
Coastal programs are well developed and usually strongly endorsed by citizens and policy makers
Coastal region is seen as a multiple use resource (fisheries, energy, habitat, recreation, transportation, etc.)
Coastal programs must encourage broad public participation
Beatley, et al., Chap. 9,10
Web Site Due - Ready for Posting
Commercial Opportunities
Recreation Uses
Mining & Mineral Extraction
Harbor & Marina Development
Transportation - Shipping/Tranport
Marine-Related Industries
Energy Production