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24 Cards in this Set
- Front
- Back
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Biotic Potential
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Maximum population growth rate under ideal conditions.
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Carrying capacity
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Largest number of organisms of a particular species that can be maintained indefintely by a given environment.
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Character displacement
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Tedency for characteristics to be more divergent when similar species belong to the same community than when they are isolated from one another.
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Climax community
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In ecology, community that results when succession has come to an end.
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Cohort
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Group of individuals having a statistical factor in common, such as year of birth, in a population study.
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Coevolution
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Joint evolution in which one species exerts slective pressure on the other species.
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Community
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Assemblage of populations interacting with one another with the same environment.
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commensalism
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Symbiotic relationship in which one species is benefited, and the other is neither harmed nor benefited.
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Ecological succession
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The gradual replacement of communites in an area following a disturbance(secondary succession) or the creation of new soil(Primary succession).
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Ecological niche
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Role an organism plays in its community, inculding its habits and its interactions with other organisms.
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Environmental resistance
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Sum total of factors in the environment that limit the numerical increase of a population in a particular region.
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Habitat
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Place where an organism lives, and is able to survive and reproduce.
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Interspecific competition
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Were similar species try to occupy the same niche, they then compete with one another for a share of resources, and in this way the number of niches increases.
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Limiting factor
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Resource or environmental condition that restrics the abundance and distribution of an organism.
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keystone species
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Species whose acivites have a signigfcant role in determining community structure.
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Logistic growth
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Population increase that results in an S-shaped curve; growth is slow at first, steepens, and then levels off due to environmental resistance.
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Mutualism
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Symbiotic relationship in which both species benefit in terms of growth and reproduction.
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Parasitism
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Symbitoic relationship in which one species(parasite) benefits in terms of growth and reproduction to the harm of the other species(host).
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Pioneer species
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Early colonizer of barren or disturbed habitats that usually has a rapid growth and high dispersal rate.
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Population
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Grup of organisms of the same species occupying a certain area and sharing a common gene pool.
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R-Selection
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A favorable life history strategy under certain enviromental conditions; characterized by a high reproductive rate with little or no attention give to offspring survival.
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Symbiosis
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Relationship that occurs when two different species live together in a unique way; it may be beneficial, neutral, or derimental to one and/or the other species.
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Survivorship
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Probability of newborn individuals of a cohort surviving to particular ages.
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K-Selelction
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A favorable life-history strategy under stable envronmental conditions characterized by the production of a few offspring with much attention given to offspring survial.
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