Ecology & Conserving Biodiversity Flashcards
Food chain
Energy stored by producers can be passed through an ecosystem.
Trophic levels ( producer, consumer, decomposer)
Each step in a food chain or food web.
Producers are first level
Consumers are second, third or higher tropic levels
Decomposers ?
Food Web
Feeding relationships among various organisms in an ecosystem forms a network of complex interactions.
Energy Pyramids
10% of energy available with one tropic level is transferred to organisms at next tropic level.
Water Cycle
Condensation Precipitation Runoff Seepage Root Uptake Evaporation
Carbon Cycle
Biological processes like photosynthesis, respiration, and decomposition take up and release carbon and oxygen
Geochemical processes - erosion, volcanic activity, release carbon dioxide to the atmosphere and ocean
Mixed biogeo chemical processes - burial and decomposition of dead organisms and conversion to coal and fossil fuels
Human activity - mining cutting/burning forests, burn fossil fuels and release carbon dioxide into atmosphere.
Nitrogen Cycle
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Phosphorus Cycle
Land - organisms - animals - land
Land - ocean - sediments - land
Ocean - marine organisms - fish - ocean
Definition of Biodiversity
The sum total of the genetically based variety of all organisms in the biosphere.
Economic Benefits
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Ecosystem Services
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Economic Benefits
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Ecosystems Services
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Aesthetic & ethical reasons to conserve
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Ultimate & Proximate causes of Extinction
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