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24 Cards in this Set
- Front
- Back
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Ecosystem Services
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Ecosystem services are the processes through which natural ecosystems and the biodiversity they contain help sustain human life on the earth.
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Biodiversity
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A term used to describe the diversity of important ecological entities that span multiple spatial scales, from genes to species to communities.
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Habitat degradation
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Anthropogenic changes that reduce the quality of habitat for many, but not all species.
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Habitat Fragmentation
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The breaking up of once continuous habitat into a complex matrix of spatially isolated habitat patches amid a human dominated landscape.
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Habitat Loss
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The outright conversion of an ecosystem to another use by human activities.
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Taxonomic Homogenization
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A worldwide reduction of biodiversity resulting from the spread of non-native and native generalists coupled with declining abundances and distributions of native specialists and endemics.
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Exotic or Invasive species
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Introduced species that survive and reproduce in their new environment, sustain a growing population and have large effects on the native community.
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Indigenous Species
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A species native to the geographic region.
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Endemic Species
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Occurring in a particular geographic location and nowhere else on Earth.
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Keystone Species
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A strongly interacting species that has a large effect on energy flow and on community structure and composition disproportionate to its abundance or biomass.
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Nutrient Cycle
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The movement of nutrients within and between ecosystems.
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Geochemical cycle
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Exchange of chemicals between ecosystems.
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Biogeochemical cycle
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Exchange of nutrients within an ecosystem
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Watershed or catchment
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The area in a terrestrial ecosystem that is drained by a single stream.
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Nutrient Pool
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The total amount of a nutrient in a component of the ecosystem
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Turnover rate
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Amount of time on average that a molecule spends in the pool = total pool of element/rate of input
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Residence Time
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The time required for the complete breakdown of one year's litter fall.
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Anthropogenic
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Of, relating to, or caused by humans or their activities.
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Weather
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Weather is the current state of the atmosphere around us at any given time.
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Climate
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Climate is the long term description of weather including average conditions and the full range of variation.
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Climate Change
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Climate change refers to directional change in climate over a period of several decades
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Greenhouse effect
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Warming of Earth by atmospheric absorption and re-radiation of infrared radiation emitted by Earth's surface.This is due to greenhouse gases in the atmosphere, primarily CO2, CH4 and N20.
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Greenhouse gases
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Compounds causes the Greenhouse effect. Primarily CO2, CH4 and N20
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Acid rain
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-rain with pH<5.6
-Ex:/ pH 2.7 is common in Penn |
