Freshwater Ecosystem By: Alicia Cisco and Luke Whitlow.
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Transcript of Freshwater Ecosystem By: Alicia Cisco and Luke Whitlow.
Freshwater EcosystemBy:Alicia Cisco and Luke Whitlow
Freshwater ecosystems are a subset of Earth’s aquatic ecosystems. Less than 0.5 parts per thousand of
dissolved salts.Examples:•Ponds•Lakes
•Wetlands•Bogs
•Swamps•Streams
•Inland Seas•Rivers
Climate Factors
Temperature Summer: 4˚C at bottom and
22˚Cat top Winter: 4˚C at bottom and 0˚C at
top Spring and Fall: 4˚C
Annual Rainfall 10-80 inches per year
Vegetation Mangroves Pickle Weed Water Lilies Algae Duckweed Cattails Reeves Mosses
Animals
Amphibians: frogs and newts Reptiles: snakes and alligators
Birds: bald eagle, crane, great blue heron Furbearers: bobcat, beaver, deer,
raccoon, Insects: dragon flies, Earth worm,
mosquito, snails, spiders
Fish
Net primary production For lakes and streams 250gC/m²/yr
Location Anywhere at any latitude outside of the
polar regions
Limiting Factors Light Oxygen Temperature Salinity Food Space pH Nutrients Nitrates
Human Impact 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
Human Impact• Humans destroy habitat • 40% of fish species live in fresh water
• This has declined by 20% in the last 20 years
Uses• Drinking• Energy and transportation• Boating and fishing• Fishermen and researchers• Hydroelectric power
Culture Farming Fishing
House Boats Boating
Works Cited Page http://www.ucmp.berkeley.edu/exhibits/biomes/fresh
water.php www.globalchange.umich.edu envscibiomes.wikispaces.com www.epa.gov content.time.com www.bubblews.com www.kompulsa.com www.omoegua.com www.globalcitizencorps.org www.jackspets.com