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15 Cards in this Set
- Front
- Back
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Richness
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# of species in a community
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Abundance
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# of individuals in a community
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Evenness
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Way individuals in a community are divided into different species
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Ecosystem
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An interacting system that invovles both the organisms and their non-living environment. The flow of energy and the cycling of nutrients is regulated
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Cycling
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Occurs because substances originated from the atmosphere or weathered rock, then became incorporated into various organisms, and ultimately through decomposition are returned to the non-living world
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Energy Transfer
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1. 1% sun energy used
2. Primary has transfer of 10% of energy from eating plants 3. Secondary also get 10% of energy from eating primary (Compare productivity of primary and biomass of secondary) |
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Water Cycle
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1. 2% fixed
a. frozen b. held in soil c. incorporated in plant or animal bodes 2. 98% circulating a. Evaporation b. Precipitation c. Transpiration |
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Aquifers
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Permeable, saturated underground layers of rock, sand and gravel
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Point-Source Pollution
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Effluent being discharged out of pipe in aquifer (from factory)
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Non-Point Source Pollution
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Pollution not coming in from one specific location, but rather a variety of locations
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Carbon Cycle
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A. Atmosphere (.03%)
B. Autotrophic Organisms (10%) C. Heterotrophic Organisms D. Decomposition (releases CO2 back into atmosphere) |
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Autotrophic
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Synthesize own food
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Heterotrophic
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Cannot synthesize own food and depended on autotrophs for nutrients (and carbon)
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Nitrogen Cycle
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Nitrogen becomes available through metabolic activities of a few types of bacteria (some free-living, other symbiotic), transformed into forms that can be taken up by plants (78% of atmosphere)
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Phosphorous Cycle
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1. Soil Leaching
2. Erosion 3. Uplifting 4. Guano 5. Mycorrhizae *Only mineral-based cycle |
