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APES Unit 2 Vocab

AP Environmental Science Key Vocabulary

TermDefinition
Adaptation A trait that helps an organism survive and reproduce.
Anthropogenic Human-induced changes on the natural environment, either indirectly or directly.
Biodiversity The variety of life in the world or in a particular habitat or ecosystem.
Biomass A measure of the total amount of organisms within a particular region
Bottleneck effect Occurs when a populations size is greatly reduced due to environmental events such as floods, earthquakes, or fires.
Colonize The arrival of individuals to areas of suitable habitat that are currently uninhabited
Cultural Ecosystem Service The non-material benefits that people obtain from ecosystems through recreation, tourism, intellectual development, spiritual enrichment, reflection and creative and aesthetic experiences.
ecological succession the process by which the structure of a biological community evolves over time. Two different types of succession primary and secondary
Ecological Tolerance The range of conditions in which a species can survive.
Ecosystem Services Important environmental benefits, such as clean air to breathe, clean water to drink, and fertile soil in which to grow crops, that ecosystems provide to people.
Episodic An unpredictable, episodic event, due to an external agent, which disrupts the state of the ecosystem causing abrupt mortality, and, hence, subtraction of biomass
Flow Rate The quality, quantity, and timing of water flows required to maintain the components, functions, processes, and resilience of aquatic ecosystems which provide goods and services to people.
generalist species Species with a broad ecological niche. They can live in many different places, eat a variety of foods, and tolerate a wide range of environmental conditions.
Genetic Diversity the range of different inherited traits within a species
Habitat Diversity the range of habitats present in a region
invasive species A species that is not native to an ecosystem and causes harm.
Island Biogeography biogeography that examines the factors that affect the species richness and diversification of isolated natural communities.
Migration seasonal movement of animals from one region to another.
Natural disruption Events in nature that occur naturally -volcanic eruptions -forest fires -landslides and earthquakes
Periodic Describes something that occurs or repeats at regular intervals
pioneer species First species to populate an area during primary succession.
provisioning ecosystem services provisioning ecosystem services
Random by chance, not planned or prearranged; irregular
regulating ecosystem services The benefit provided by ecosystem processes that moderate natural phenomena. - pollination - decomposition - water purification - erosion - flood control - climate regulation.
Salinity A measure of the amount of dissolved salts in a given amount of liquid
secondary succession Succession following a disturbance that destroys a community without destroying the soil
specialist species Species with a narrow ecological niche. They may be able to live in only one type of habitat, tolerate only a narrow range of climatic and other environmental conditions, or use only one type or a few types of food.
primary succession An ecological succession that begins in an area where no biotic community previously existed
species richness the number of different species in a defined region.
supporting ecosystem services Ecosystem services that are necessary for the production of all other ecosystem services. - biomass - production, - production of atmospheric oxygen - soil formation and retention - nutrient cycling - water cycling - provisioning of habitat.
Created by: HollandSci
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