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Batterbee Ecology
ecology
| Question | Answer |
|---|---|
| Population density | number of individuals per unit of area |
| immigration | movement of individuals in to an area occupied by an existing population |
| emigration | movement of individuals out of an area |
| exponential growth | growth pattern in which the individuals in a population reproduce at a constant rate |
| logistic growth | growth pattern in which a populations's growth rate slows or stops following a period of exponential growth |
| carrying capacity | largest number of indiviuals of a population that a given environment can support. |
| limiting factor | factor that causes the growth of a population to decrease |
| density-dependent limiting factor | limiting factor that depends on population size |
| density-independent limiting factor | limiting factor that affects all populations in similar ways, regardless of population size |
| demography | scientific study of human populations |
| Interdependence | all of the species within an ecosystem are closely connected |
| species | group of similar organisms that can breed and produce fertile offspring |
| population | group of individuals of the same species that live in the same area |
| community | assemmblage of different populations that live together in a defined area |
| ecosystem | collection of all the organisms that live in a particular place, together with their nonliving environment |
| biome | group of ecosystems that have the same climate and dominant communities |
| niche | full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions |
| resource | any necessity of life, such as water, nutrients, light, food, or space |
| predation | interaction in which in organism captures and feeds on another organism |
| symbiosis | relationship in which two species live closely together |
| mutualism | symbiotic relationship in which both species benefit from the relationship |
| commensalism | symbiotic relationship in which one member of the association benefits and the other is neither helped nor harmed |
| parasitism | symbiotic relationship in which one organism lives in or on another organism (the host) and consequently harms it. |
| ecological succesion | gradual change in living communities that follows a disturbance |
| primary succession | succession that occurs on surfaces where no soil exists |
| pioneer species | first species to populate an area during primary succession |
| secondary succession | succession following a disturbance that destroys a community without destroying the soil |
Created by:
Batterbee
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