Communities & Ecosystems

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Presentation transcript:

Communities & Ecosystems

Assessment Statements Obj. 5.1.1 Define species, habitat, population, community, ecosystem & ecology. 1 5.1.2 Distinguish between autotroph and heterotroph. 2 5.1.3 Distinguish between consumers, detritivores and saprotrophs. 5.1.4 Describe what is meant by a food chain, giving three examples, each with at least four linkages. 5.1.5 Describe what is meant by a food web. 5.1.6 Define trophic level. 5.1.7 Deduce the trophic level of an organism in a food chain & food web. 3 5.1.8 Construct a food web containing up to 10 organisms, using appropriate information. 5.1.9 State that sunlight is the initial energy source for almost all communities. 5.1.10 Explain the energy flow in a food chain. 5.1.11 State that energy transfers are never 100% efficient. 5.1.12 Explain reasons for the shape of a pyramid of energy. 5.1.13 Explain that energy enters and leaves ecosystems, but nutrients must be recycled. 5.1.14 State that saprotrophic bacteria and fungi (decomposers) recycle nutrients.

Food webs show all of the feeding relationships within a habitat. Read this research article and generate a food web. The state of the oceans, part 2: Delving deeper into the sea's bounty. John Tibbetts This is a good thing.

Food webs show all of the feeding relationships within a habitat. Read this research article and generate a food web. The state of the oceans, part 2: Delving deeper into the sea's bounty. John Tibbetts This is a good thing.

Food webs show all of the feeding relationships within a habitat.

Food webs show all of the feeding relationships within a habitat.