Ecosystem Ecology

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Last updated 7:06 PM on 5/11/26
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5 Terms

1
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What is an ecological community?

An ecosystem is defined by all the organisms (biotic component) and the physical environment (abiotic components) they interact with

2
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What are some of the major materials (i.e. essential elements) of life?

H(375,000,000) O(132,000,000) C(85,700,000) N(6,430,000)

Ca(1,500,000) P(1,020,000) S(206,000)

(water, carbon, nitrogen, calcium, phosphorous and sulphur cycle)

3
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Which of the following major elements Ca, N, P, S are derived from weathered rock?

Which come from the atmosphere?

calcium & phosphorous

4
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What are two major ways in which predators can influence Plant Community

Composition and overall Ecosystem Function?

5
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What is a species Niche? What does the phrase Niche complementarity mean? How

does this relate to the observed positive relationship between biodiversity and net

primary productivity (i.e. the rate of increase in plant biomass)?