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wetlands - inundated or saturated by surface our groundwater. People still debate where the wetland
ends
wetland policies - wetlands help keep the water clean. policies to protect Clean water act, Army corps
engineers, EPA
wetlands and endangered species - estimate 43% of endangered species live in wetlands
wetland loss - Iowa has lost 89% of wetlands at least
wetland reconstruction - cities are reconstructing wetlands to help with clean water
why are wetlands important - high primary production, serve as biological filters, nursery/breeding area,
serve as buffers in ocean
wetland functions from textbook - storm water, groundwater, pollutants, wildlife (filters stuff out)
what is the most productive system - coral reefs
marine system - 70% of earths surface, salinity of 35 parts per thousand, deepest system 10,000 feet
estuarine system - estuaries, salinity of .3-35 parts, very shallow
freshwater system - 1.5% of earths surface, salinity .3 parts per thousand
lotic system - flowing river, low primary production, low retention time, external input, no zones