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AP Bio Ch. 50-54 Voc

Unit 8: Ecology -- Chapters 50-54 Vocabulary

TermDefinition
Ecology Study of how organisms interact with their environment.
Population A localized group of individuals that belong to the same biological species (that are capable of inter breeding & producing fertile offspring).
Community All the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction.
Ecosystem All the organisms in a given area as well as the abiotic factors with which they interact; a community and its physical environment.
Abiotic nonliving
Biotic Pertaining to the living organisms in the environment.
Biosphere The entire portion of Earth inhabited by life; the sum of all the planets ecosystems.
Carrying Capacity The maximum population size than can be supported by the available resources, symbolized as K.
Species Richness The number of species in a biological community.
Relative Abundance Differences in the abundances of different species with a community.
Gross Primary Productivity (GPP) The total primary production of an ecosystem.
Net Primary Productivity (NPP) The gross primary production of an ecosystem minus the energy used by the producers for respiration.
Dominant Species Those species in a community that have the highest abundance or highest biomass. These species exert a powerful control over the occurrence & distribution of other species.
Keystone Species A species that is not necessarily abundant in a community yet exerts strong control on community structure by the nature of its ecological role or niche.
Eutrophication A process by which nutrients particularly phosphorus & nitrogen, become highly concentrated in a body of water, leading to increased growth of organisms such as algae.
Invasive Species A species that takes hold outside of its native range; usually introduced by humans.
Photosyntesis The conversion of light energy to chemical energy that is stored in glucose or other organic compounds; occurs in plants, algae, and certain prokaryotes.
Created by: lperez10
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