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