Freshwater Ecosystem

By:Alicia C. and Luke

• Examples:• Ponds, lakes, inland seas, wetlands, marshes,

swamps, bogs, fens, creeks, steams, and rivers.

• These places can be anywhere where there is a depression in the earth.

Climate factors

• Anywhere from -50F to 110F• The vegetation is mangroves and pickle weed,

water lilies, algae, duckweed, cattails, reeves, and certain mosses

• The average rainfall is about 50in• This is enough to support the fresh water

ecosystem

Climate factors (cont)

• Animals amphibians, reptiles, birds, furbearers, and insects

• Amphibians: frogs and newts• Reptiles: snakes and alligators• Birds: bald eagle, craine, great blue heron• Furbearers: bobcat, beaver, deer, racoon, • Insects: drangon flies, Earth worm, mosquito,

snails, spiders

Limiting factors

• Light oxygen temperature• Salinity food space ph nutrients and nitrates

Net primary production

• For lakes and streams 250gC/m²/yr

location

• Anywhere at any latittude outside of the polar regions

Uses

• Drinking• Energy and transportation• Boating and fishing• Fishermen and researchers• Hydroelectric power• Humans destroy habitat 40% of fish species

live in fresh water• This has declined by 20% in the last 20 years

• Dam's block fish migration routes and destroy plants and animals

• Pollution from runoff of agriculture and urban areas

• Global warming produces devastating floods and droughts

• Invasion of exotic species harm native animals and plants