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25 Cards in this Set
- Front
- Back
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community |
a group of various species that live in the same habitat and interact with each other. |
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ecosystem |
a community of organisms and their abiotic enviorment |
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habitat |
a place where an organism usually lives |
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biodiversity |
the variety of organisms in a given area, the genetic variation within a population , the variety of communities in an ecosystem |
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succession |
the replacement of one type of community by another at a single location over a period of time |
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climate |
the average weather conditions in an area over a period of time |
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biome |
a large region characterized by a specific type of climate and certain of plants and animal communities |
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producer |
a photosynthetic or chemosynthetic autotroph that serves as the basic food source in a certain ecosystem |
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consumer |
an organism that eats other organisms or organic matter instead of producing its own nutrients or obtaining nutrients from inorganic sources |
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decomposer |
an organism that feeds by breaking down organic matter from dead organisms |
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trophic level |
one of the steps in a food chain or food pryimid |
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energy pyrimid |
a triangular diagram that shows an ecosystems ;loss of energy, which results as energy passes through the ecosystems food chain |
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population |
a group of organisms of the same species that live in a specific geographical area and interbreed |
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carrying capacity |
the largest population that an environment can support at any given time |
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predation |
an interaction between two organisms in which one organism, the predator, kills and feeds on another, the prey |
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coevolution |
the evolution of two or more species that is due to mutual influence |
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parasitism |
a relationship between two species in which one species, the parasite, benefits from the other species, the host, which is harmed |
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symbiosis |
a relationship in which two different organisms live in a close association with each other |
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mutualism |
a relationship between two species in which both species benefit |
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commensalism |
a relationship between two organisms in which one organism benefits the other is uneffected |
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niche |
the unique position occupied by a species, both in terms of its physical use of its habitat and its function within an ecological mcommunity |
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fundamental niche |
the largest ecological niche where an organism or species can live without compition |
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Realized niche |
the range of resources that a species uses, the conditions that the species can tolerate, and the functional roles that the species plays as a result of competition in the species' fundamental niche |
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competitive exclusion |
the exclusion of one species by another due to competition |
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keystone species |
a species tat is critical to the functioning of the ecosystem in which it lives because it affects the survival and abundance of many other species in its community |
