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About Core Practicals A2 Edexcel Biology
The document describes several methods for observing ecological patterns and measuring abundance of organisms: 1) Density, frequency, and percentage cover methods are used to count organisms within sampling quadrats. 2) Trapping techniques like pitfall traps, sweep nets, and funnel traps are used to capture fast-moving or small organisms. 3) Systematic sampling uses grids for slopes and random sampling generates random coordinates for placing quadrats to avoid bias on flat ground. Line transects also measure zonation by counting organisms in quadrats placed in different altitude or depth zones.
Detailed Information
Author: | ['hbaakza'] |
---|---|
Publication Year: | 2013 |
Pages: | 3 |
Language: | English |
Format: | |
Price: | FREE |
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