APES Unit 2 - Water

Freshwater biomes

vital resource for drinking water

Marine Biomes

algae in marine biomes supply a large portion of the earths oxygen, and also take CO2 from the atmosphere

Global distribution

nonmineral marine natural resource such as different types of fish, varies because of some combination of salinity, depth, turbidity, nutrient availability, and temperature

Turbidity

murky (cleaner water is less turbid)

Streams

salinity-zero, flow-fast, biota-small fish, productivity-high

Rivers

salinity-zero, flow-medium, biota-trout/salmon/catfish, zones-fast=high O2/slower=low O2, productivity-medium

Lakes

salinity-zero, flow-still, biota-frehwater fish and plants, zones-littoral (shallow) limnetic (open water) benthic (bottom) profundal (below limnetic; no light), productivity-low=oligotrophic/high=eutrophic

Wetland

salinity-zero/low, flow-still, biota- baby fish/birds/insects/emergent plants and trees, productivity-very high

Open Ocean

salinity-35ppt/brackish, flow-current/gyres, biota-phytoplankton/large fish/mammals, zones-photic (light) aphotic (no light) benthic (sea floor), productivity-low