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19 Cards in this Set
- Front
- Back
the study of interactions of living orgnaisms with one another and with their environment
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ecology
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place where a particular population of a species lives
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habitat
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the many different species that live together in a habitat
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community
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ecological sysem encompassing a community and all the physical aspects of its habitat
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ecosystem
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physical aspects of a habitat
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abiotic factor
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living organisms in a habitat
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biotic factor
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the variety of species living within an ecosystem
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biodiversity
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small, fast growing plants that are the first organisms to live in a new habitat
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pioneer species
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the regular progression of species replacement that occurs after disturbance or the development of new habitat
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succession
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succession that occurs in a newly formed habitat that has never before sustained life
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primary succession
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an episode of succession that occurs in areas where there has been previous growth, such as abandoned fields or forest clearings
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secondary succession
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the amount of organic material that the photosynthetic organisms of an ecosystem produce
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primary productivity
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organism that makes it own food from energy and carbon atoms in its environment; autotroph
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producer
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organism that must obtain energy to build its molecules by consuming other organisms; heterotroph
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consumer
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a group of organisms that have the same source of energy; a step in a food chain
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trophic level
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linear pathway of energy transfer in an ecosystem
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food chain
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organism that eats only plants or algae
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herbivore
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flesh-eating organism
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carnivore
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animal that eats both plants and animals
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omnivore
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