Ecosystem Definitions 0.0 / 5 ? BiologyEcology, ecosystems and environmental biologyA2/A-levelOCR Created by: graaadeCreated on: 14-03-14 11:16 Ecosystem a group of living organisms and non-living things occurring together and the interrelationships between them. 1 of 11 Habitat the place where an organism lives. 2 of 11 Population all the organisms of one species, who live in the same place at the same time, and can breed with one another. 3 of 11 Community all the populations of different species, who live in the same place at the same time, and can interact with one another. 4 of 11 Niche the role that each species plays in an ecosystem 5 of 11 Biotic factor an effect on an organism that is the result of other living organisms in the ecosystem (e.g. predation, infection, food supply) 6 of 11 Abiotic factor an effect on an organism that is the result of non-living components of an ecosystem (e.g. pH, temperature, soil type) 7 of 11 Trophic level is the level at which an organism feeds in a food chain. 8 of 11 Succession a directional change in a community of organisms over time. 9 of 11 Pioneer species are the first species to occupy a new habitat, starting new communities. 10 of 11 Climax community is the stable community that is reached where no further succession occurs. 11 of 11
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