Lytle - APES Ch 6 Vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
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| autotrophs | An organism that produces its own food from inorganic compounds and a source of energy. There are photoautotrophs and chemical autotrophs
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| community-level interactions | When the interaction between two species leads to changes in the presence or absence of other species or in a large change in abundance of other species, then a community effect is said to have occurred.
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| decomposers | Organisims that feed on dead organic matter.
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| ecological community | 1.Conceptual or functional meaning: set of interacting species that occur in same place(sometimes extended to mean a set that interacts in way to sustain life) 2. operational meaning: set of species found in an area, whether or not they are interacting
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| food chains | The linkage of who feeds on whom.
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| food webs | A network of who feeds on whom or a diagram showing who feeds on who. It is synonymous with food chain
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| keystone species | A species, such as the sea otter that has a large effect on its community or ecosystem so that its removal or addition to the community leads to major changes in the abundances of many or all other species.
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| succession | The process of establishment and development of an ecosystem.
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| trophic level | In an ecological community, all the organisms that are the same number of food-chain steps from the primary source of energy.
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| watershed | An area of land that forms the drainage of a stream or river. If a drop of rain falls anywhere within a watershed to become surface runoff, it can flow out only through the same stream.
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