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Green Generation 2

Ecology of Communities

TermDefinition
Community Two or more populations of different species occupying the same geographical area
• Community Ecology The study of how different species interact within communities
• Habitat The physical place where an organism lives, e.g. a pine forest or fresh water lake. (Some organisms, particularly migratory birds require more than one habitat)
• Niche The functional role of an organism in a community, its job or position
Potential niche What a species could do with no competitors or resource limitations
Realized niche The part of the fundamental niche that a species actually occupies in nature. (What a species really does due to competition and/or resource limitations)
• Neutral species interaction Two species that don't interact at all. ?-?
• Commensalism Beneficial to one species but neutral to another (birds that nest in trees, epiphytes (plants that grow on other plants) :)-:|
• Mutualism Beneficial to both species(plants and their pollinators) :)-:)
• Parasitism Benefits one species and is detrimental to another. (Note that the host is generally not killed) :)-:(
• Predation Beneficial to one species and detrimental to another. In this case the prey is killed and eaten. :)-:(
 Intraspecific competition Competition among individuals of the same species
 Interspecific competition Competition between different species
 The Theory of Competitive Exclusion Species who utilize the same resources cannot coexist indefinitely - the "one niche, one species" concept.
 Resource partitioning The resources are divided, permitting species with similar requirements to use the same resources in different areas, ways and/or times.
Created by: bemcbee
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