Whāinga/Purpose:
Whāinga/Purpose:
Embedded Files
Learning intention: To demonstrate an understanding of ecological patterns
Success criteria: Select, identify and collect data to analyse and interpret an ecological pattern
Do now!
Do now!
The environment is made up of abiotic and biotic factors.
Revision:
What is an abiotic factor?
What is a biotic factor?
These determine where organisms can be found.
Community Patterns
Community Patterns
How individual organisms interact with both the environment and each other usually means that there will be a pattern in the occurrence of organisms over space and/or time.
A pattern is any regular and predictable occurrence of organisms. The occurrence of organisms allows us to assess how far along it is in being established, as well as how healthy it is.
Its health can be evaluated according to its biodiversity - the range of organisms found across the community.
Biodiversity in organisms usually increases as the community develops, but this process can be affected by both natural and human impacts.
There are three ecological patterns that you need to understand - these are called stratification, succession, and zonation.
Rocky Shore Investigation
Rocky Shore Investigation
Rocky Shore Field Trip
Rocky Shore Field Trip
An ecological or community pattern is the regular occurence of organisms across a community. This is due to a gradient in an abiotic factor, ie. a physical factor that changes from high to low or vice versa.
Is there a pattern or absence of a pattern?
Is there a pattern or absence of a pattern?
Investigating patterns in an ecological community will highlight multiple interrelationships and interactions.
Often this is the data that will drive decisions in regard to conservation initiatives.
Analysis Practice
Analysis Practice
Which graph?
Graphs
Graphs
Graphs are drawn to aid the interpretation of your data. Different graphs are appropriate to draw to interpret different ecological patterns, and see if they are present or absent.
Activity/Mahi
Read the information under activity I 122 Field study of a rocky shore, p 170 - 171
Use either the Site A or B data to select three species and then draw a kite graph/diagram using your preferred resource(s) below (ie. video, slideshow or notes).
You will also need graph paper, a ruler, a pencil, as well as coloured pencils to colour your kites in.
You will go on to compare this graph to two different bar graphs in the next activity.
A kite diagram is drawn when you want to compare the abundance and distribution of species across space.
A kite diagram is drawn when you want to compare the abundance and distribution of species across space.
A bar graph is drawn when you want to compare the abundance of species across space or time.
A bar graph is drawn when you want to compare the abundance of species across space or time.
Interpretation Practice
Interpretation Practice
The Pattern
The Pattern
Does your graph show that there is a pattern (or an absence of a pattern)?
In the assessment, you will need to be able to identify the pattern, describe it, and explain what causes it using your data.
Activity/Mahi
Complete the biozone activities below to learn more about what causes the different community patterns - zonation, stratification and succession.
Then see if you can match your diagrams to the correct community pattern.
How do you know it is that pattern? What causes it?
Is it zonation?
Is it zonation?
Biozone Internal Workbook
Biozone Internal Workbook
I 118 Physical factors on a rocky shore, p. 165
I 124 Shoreline zonation, p175
I 125 Competition and species distribution, p 176 - 177
I 126 Niche and community patterns, p 178 - 179
Is it stratification?
Is it stratification?
Biozone Internal Workbook
Biozone Internal Workbook
I 117 Physical factors in a forest, p 164
I 112 Species interactions in a beech forest, p 156 - 157
I 116 Stratification in a forest, p 162 - 163
Is it succession?
Is it succession?
Biozone Internal Workbook
Biozone Internal Workbook
I 129 Primary succession, p 184 - 185
I 130 Secondary succession, p 186
Hui Puremu/Plenary
Hui Puremu/Plenary
Ecological Patterns Preparation
Ecological Patterns Preparation
Use the map below to structure your own template to help you compete the assessment. This information will then need to be transferred to the doc shared with you on classroom when posted.
This template can include notes on the assessment criteria required for each part.
Ecological Patterns Map.pdfIn the assessment you should also use your own research, however all sources must be referenced. Use the citation tool on google docs to produce your reference list.
In the assessment you should also use your own research, however all sources must be referenced. Use the citation tool on google docs to produce your reference list.
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