Ecology test
5 important questions on Ecology test
What is the basic level of an aquatic food chain>
Why is the biomass of higher trophic levels always lower than of lower trophic levels?
For what are fish used as indicators for ecological water quality important?
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What are advantages and disadvantages of using fish as indicators for ecological water quality?
- present in most aquatic systems
- easy to identify
- information available on environmental responses
- clear response to stress
- long term effects (fish live long)
Disadvantages:
- selectivity of sampling gear
- sampling bias due to mobility
- sampling takes effort
- tolerance to disturbance
- relatively late indication of water quality changes
What is the main difference between the river continuum concept (TCC) and the flood pulse concept (FPC) in terms of the spatial dimensions of the river?
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