ENV100Y5 Quiz: QUIZ 2 KEY

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raspberryhare348

6 Jan 2011

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ENV100Y5 Full Course Notes

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Community ecologist biotic focus/ individual organisms ex. Gewf - ecosytem on scale is determined by question asked: ecosystems viewed in context of surrounding environment. Closed ecosystem: no external inputs (no ecosystem is fully closed) Open ecosystem: inputs from surrounding environment (arrive and leave) Depends on phenomenon being studied/ and question asked gessi temoral. E flow in ecosystems ecosystem is an economy; energy is the currency/ecosystems based on autotrophs - transform energy from photosynthetic into chemical energy. Primary producers: capture e turn it into glucose and do it b/c it needs e for growth, maintenance, and reproduction. Gpp total energy captured form photosynthesis, some energy is lost through respiration, some stored. It can be separated and has boundaries, what can move into and out of. Leaves tree forest mountain range with forest, snow and rivers, or the whole planet. What would happen if we did this change in one thing in the system.

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Shawnta used several terms in her post that I want to be sure everyone understands. Ecology is studied with a hierarchy, similar to the hierarchy of classification. The lowest level is the individual. A group of individuals of the same species that live in the same area is called a population. All of the different populations that live in the same area make up a community. So far we have only been talking about the living organisms. When you add in the non-living components of an area you have an ecosystem. The living parts of an ecosystem are called the biotic components and the non-living parts are called the abiotic components.
What are some of the abiotic components that affect what can live in an ecosystem?

mauvewhale457

A biotic factor is a living element found within an ecosystem,while an abiotic factor is a nonliving element found within anecosystem. Choose a biome and ecosystem and provide an example of abiotic and abiotic factor found within your biome/ecosystem.Explain the importance of these factors to your specificbiome/ecosystem.

bluewildebeest547

When researchers re-introduced wolves into yellowstone national park, many aspects of the ecosystem were affected, ranging from the dendities of species to the flow of rives.

A) describe three affects of reintroducing wolves on the biotic or abiotic components of Yellowstones ecosystem.

B) use your understanding of community and ecosystem processes to explain how wolves caused each of these changes

ENV100Y5 Quiz: QUIZ 2 KEY

ENV100Y5 Full Course Notes

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