Embedded Files
Essential Questions:
Essential Questions:
- How do different factors change population size?
- How do humans impact biodiversity both positively and negatively?
- How do different factors result in the evolution of a species?
Content Objectives:
Content Objectives:
- Explain the ways ecologists study populations.
- Identify the factors that affect population growth.
- Explain what happens during exponential and logistic growth.
- Identify factors affecting carrying capacity.
- Identify limiting factors that depend and do not depend on the population density.
- Explain the relationship between limiting factor and population extinction.
- Describe the change of human population over time.
- Explain why population growth rates differ between countries.
Language Objectives:
Language Objectives:
Students will....
- Describe the changes in population based on growth rate, death rate, immigration and emigration using visuals and a partner.
- Explain the role of oysters in an ecosystem using a graphic organizer and a partner.
Standards Addressed:
Standards Addressed:
- HS-LS2-1. Analyze data sets to support explanations that biotic and abiotic factors affect ecosystem carrying capacity.
- HS-LS2-2. Use mathematical representations to support explanations that biotic and abiotic factors affect biodiversity, including genetic diversity within a population and species diversity within an ecosystem.
- HS-LS2-6. Analyze data to show ecosystems tend to maintain relatively consistent numbers and types of organisms even when small changes in conditions occur but that extreme fluctuations in conditions may result in a new ecosystem. Construct an argument supported by evidence that ecosystems with greater biodiversity tend to have greater resistance to change and resilience.
- HS-LS4-2. Construct an explanation based on evidence that Darwin’s theory of evolution by natural selection occurs in a population when the following conditions are met: (a) more offspring are produced than can be supported by the environment, (b) there is heritable variation among individuals, and (c) some of these variations lead to differential fitness among individuals as some individuals are better able to compete for limited resources than others.
- HS-LS4-5. Evaluate models that demonstrate how changes in an environment may result in the evolution of a population of a given species, the emergence of new species over generations, or the extinction of other species due to the processes of genetic drift, gene flow, mutation, and natural selection.
Assignment #1: Reading
Assignment #1: Reading
Read Chapter 5 and take notes.
5.1: How Populations Grow
- Describing Populations
- Population Growth
- Exponential Growth
- Logistic Growth
5.2: Limits to Growth
- Limiting Factors
- Density-Dependent Limiting Factors
- Density-Independent Limiting Factors
- Limiting Factors and Extinction
5.3: Human Population Growth
- Historical Overview
- Patterns of Human Population Growth
- What is the difference between population density and distribution?
- What characteristics do ecologists study to learn about populations?
- What factors determine the rate at which a population is increasing or decreasing?
- What happens to the growth of a population when resources are unlimited?
- How does logistic growth occur?
- What is a limiting factor?
- How do limiting factors affect the population of a species?
- Why are competition, predation, herbivory, parasitism, disease and stress from overcrowding density-dependent limiting factors?
- What happens to a population in response to a density-independent limiting factor?
- What may cause a species to become extinct?
- How could a change in an ecosystem increase the carrying capacity for one species and decrease it for another? Include an example in your answer.
- In a dense forest, trees complete with one another for space to grow and for sunlight. Although all trees need water, why is water not generally a limiting factor in the forest?
- How has the human population size changed throughout history?
- What factors help explain the differences in human population growth in different countries?
- What questions should you ask to determine whether a population has passed through a demographic transition? (3 questions)
Vocabulary:
5.1: Population Density, Population Distribution, Age Structure, Immigration, Emigration, Exponential Growth, Logistic Growth, Carrying Capacity.
5.2: Limiting Factor, Density-Dependent Limiting Factor, Density-Independent Limiting Factor
5.3: Demography, Demographic Transition
Answer the questions to the right and attach to google Classroom.
** Review the study guide portion of the text (Sections 1.1, 1.2 and 1.3)
*** Complete the Key Terms and Questions section of the book to prepare for your test.
**** Define the key terms!
Assignment #2: Lecture
Assignment #2: Lecture
Step 1: Review the provided presentation about populations.
** When you scroll over the presentation open the speaker notes. Make this full screen! You will be able to see the slide and the speaker notes!
Step 2: Turn in the assignment on Google Classroom!
Assignment #3: Population Sampling Lab
Assignment #3: Population Sampling Lab
Step 1: Read the background information and create a hypothesis.
Step 2: With a partner, complete the lab procedure and collect data.
Step 3: Calculate the size of the population of beads using the formula provided.
Step 4: Count the number of beads within your bag.
Step 5: Complete the conclusion questions.
Assignment #4: Endangered Species Presentation
Assignment #4: Endangered Species Presentation
Step 1: Choose an endangered species from the provided list.
Endangered Species List: African Elephant, African Wild Dog, Albacore Tuna, Amazon River Dolphin, Amur Leopard, Amur Tiger, Arctic Fox, Arctic Wolf, Asian Elephant, Beluga, Bengal Tiger, Bigeye Tuna, Black Rhino, Black Spider Monkey, Black-footed Ferret, Blue Whale, Bluefin Tuna, Bonobo, Bornean Orangutan, Borneo Pygmy Elephant, Bowhead whale, Brown Bear, Chimpanzee, Common Bottlenose Dolphin, Cross River Gorilla, Dugong, Eastern Lowland Gorilla, Fin Whale, Galapagos Penguin, Ganges River Dolphin, Giant Panda, Giant Tortoise, Grey Whale, Great White Shark, Greater One-Horned Rhino, Greater Sage0Grouse, Green Turtle, Hawksbill Turtle, Hector's Dolphin, Hippopotamus, Humphead Wrasse, Indian Elephant, Indochinese Tiger, Indus River Dolphin Irrawaddy Dolphin, Jaguar, Javan Rhino, Leatherback Turtle, Loggerhead Turtle, Macaw, Malayan Tiger, Marine Iguana, Monarch Butterfly, Mountain Gorilla, Mountain Plover, Narwhal, North Atlantic Right Whale, Olive Ridley Turtle, Orangutan, Pacific Salmon, Pangolin, Plains Bison, Poison Dart Frog, Polar Bear, Pronghorn, Red Panda, Saola, Savanna Elephant, Sea Lions, Sei Whale, Skipjack Tuna, Snow Leopard, South China Tiger, Southern rockhopper penguin, Sri Lankan Elephant, Sumatran Elephant, Sumatran Orangutan, Sumatran Rhino, Sumatran Tiger, Swift Fox, Tiger, Tree Kangaroo, Vaquita, Western Lowland Gorilla, Whale shark, White Rhino, Yangtze Finless Porpoise, Yellowfin tuna
Step 2: Research the following topics about your endangered species using a process journal.
- Reproductive Biology (how does your species reproduce? What circumstances need to happen?) [Age Structure]
- Population size graphs over time (with explanations of changes in population for three periods of time)
- Current Population size
- Geographic distribution
- Species specialization (Where does your species fit into their ecosystem?)
- Explain the most recent birth and death rates (what is happening to the population?)
- Species Threats
- How does the above information influence the population of your endangered species?
- Species conservation
Step 3: In a presentation, you will provide the above information including title slide, information slides and bibliography slides.
** Speaker notes will be utilized for the presentation portion due to lack of time to present the information.
Other resources
Other resources
Report abuse