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15 Cards in this Set

  • Front
  • Back
Richness
# of species in a community
Abundance
# of individuals in a community
Evenness
Way individuals in a community are divided into different species
Ecosystem
An interacting system that invovles both the organisms and their non-living environment. The flow of energy and the cycling of nutrients is regulated
Cycling
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
Energy Transfer
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)
Water Cycle
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
Aquifers
Permeable, saturated underground layers of rock, sand and gravel
Point-Source Pollution
Effluent being discharged out of pipe in aquifer (from factory)
Non-Point Source Pollution
Pollution not coming in from one specific location, but rather a variety of locations
Carbon Cycle
A. Atmosphere (.03%)
B. Autotrophic Organisms (10%)
C. Heterotrophic Organisms
D. Decomposition (releases CO2 back into atmosphere)
Autotrophic
Synthesize own food
Heterotrophic
Cannot synthesize own food and depended on autotrophs for nutrients (and carbon)
Nitrogen Cycle
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)
Phosphorous Cycle
1. Soil Leaching
2. Erosion
3. Uplifting
4. Guano
5. Mycorrhizae
*Only mineral-based cycle