Aquatic Biomes Freshwater Biome: rivers, streams, and lakes. - No salt.
What are some characteristics of freshwater biomes?
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Transcript of What are some characteristics of freshwater biomes?
What are some characteristics of freshwater biomes?
FreshwaterBiomes
• Are made of water with no salt
Ex. Rivers, streams, lakes, ponds, swamps• Are shaped by abiotic factors
Ex. The speed at which the water is moving
http://library.thinkquest.org/28022/body.html
Water on the Move
Fast-Moving
Still-WaterSlow-Moving
Water Movement
Tributary• Each creek or stream of water that joins a larger trickle or stream.
So, where does the water come from that enters the tributary?
Fast-Moving Water• Forms as more tributaries join a stream and then
a river.• Organisms have adaptions to avoid being swept
away.• Ex. Algae, moss, tadpoles, fish, clams
http://www.flyfishrivers.com/Provoriver/Trout.html
Slow-Moving Water
• As a river grows wider and slower it meanders.• Meander-to flow in a curved pattern on the land.
• Deltas may form Ex. Mississippi & New Orleans & Dry Deltas on Mars
Slow-Moving Water Animals
Ex. Dragonflies,
Water Striders,
& Fish
Still Waters
Ex. Lakes & Ponds• Have 3 Zones
-Littoral
-Open-Water
-Deep-Water
Check out your Still Water chart.
Littoral Zone
• Closest to the edge of land.• Lots of light means lots of plants near the shore.
Ex. Cattails, pond weeds, water lilies
Littoral ZoneAnimals
Ex. Snails, clams, worms, frogs, salamanders, turtles, & fish
Open-Water Zone
• Only goes as deep as light can reach
Ex. Bass, trout, phytoplankton
Deep-Water Zone
• No light
Ex. Catfish, carp, crustaceans, fungi, bacteria• Organisms feed on dead material.
Wetlands
• Area of land where the water level is near or about the surface of the ground for most of the year.
• Control flooding• Replenish underground water
MarshWetland
• Treeless wetland• Found in shallow water along shores of lakes,
ponds, rivers, streams
Ex. Reeds, wild rice, muskrats, turtles
SwampWetland
• Trees and vines grow here• Located in low-lying areas beside slow rivers
Ex. Willow, oak, elm trees, Spanish moss,
Poison ivy, snakes, birds
So, how can lakes or ponds disappear?
1. Water carries material to the standing water
2. Dead material then settles to the bottom
3. The lake or pond slowly fills up
4. Lake…marsh….forest.