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Ecology Seger
28 ecology flash cards
| Question | Answer |
|---|---|
| Abiotic Factor | Physical, or non-living, factor that shapes an ecosystem |
| Autotroph | Organism that can capture energy from sunlight or chemicalsand use it to produce its own food from inorganic compounds; also called a producer |
| Biodiversity | Biological diversity; the sum total of the variety of organisms in the biosphere |
| Biomass | Total amount of living tissue within a given trophic level |
| Biological Magnification | Increasing concentration of a harmful substance in organisms at higher trophic levels in a food chain or food web |
| Biosphere | Part of Earth in which life exists including land, water, and air or atmosphere |
| Biotic Factor | Biological influence on organisms within an ecosystem |
| Biogeochemical Cycle | Process in which elements, chemical compounds, and other forms of matterare passed from one organism to another and from one part of the biosphere to another |
| Carrying Capacity | Largest number of individuals of a population that a given environment can support |
| Climate | Average, year-after-year conditions of temperature and precipitation in a particular region |
| Community | Assemblage of different populations that live together in a defined area |
| Demographic Transition | Change in a population from high birth and death rates to low birth and death rates |
| Demography | Scientific study of human populations |
| Ecology | Scientific study of interactions among organisms and between organisms and their environment |
| Ecosystem | Collection of all the organisms that live in a particular place, together with their nonliving environment |
| Food Web | Network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem |
| Greenhouse Effect | Natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane, water vapor, and other gases |
| Green Revolution | Development of highly productive crop strains and the use of modern agricultural techniques to increaseyields of food crops |
| Heterotroph | Organism that obtains energy from the foods it consumes; also called a consumer |
| Limiting Nutrient | Single nutrient that either is scarce or cycles very slowly, limiting the growth of organisms in an ecosystem |
| Logistic Growth | Growth pattern in which a population's growth rate slows or stops following a period of exponential growth |
| Niche | Full range of physical and biological conditions in which and organism lives and the way in which the organism uses those conditions |
| Pollutant | Harmful material that can enter the biosphere through the land, air, or water |
| Population | Group of individuals of the same species that live in the same area |
| Renewable Resource | Resource that can regeneratequickly and that is replaceable |
| Species | Group of similar organisms that can breed and produce fertile offspring |
| Trophic Level | Step in a food chain or food web |
| Weather | Condition of Earth's atmosphere at a particular time and space |
Created by:
cseger
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