1. Freshwater Ecosystems By: Jerrene and Nica

2. Rivers What is River? 1 A river is a body of water with current moving in one general direction. They can vary in size, with smaller versions of rivers being referred to as streams, creeks, or runs. The water in a river flows into either a larger river, a bay, or ocean. Rivers themselves are fed by smaller rivers or streams. Rivers are important habitat to many different types of plants and wildlife.

3. The Abiotic factors in the river  Water temperature  Rocks  Water pH level The Biotic factors in the river  Insects  Snails  Fish  Plants  Algae  Crabs  shrimp

4. Streams A body of running water moving under the influence of gravity through a clearly defined natural channel. What is Stream?

5.  Water bugs  Ducks  Fish  Plants  crayfish  Rocks  Sand  Dirt  Water Biotic Factors Abiotic Factors

6. HTTP://WWW.FCPS.EDU/ISLANDCREEKES/ECOLOGY/RIVER.HTM HTTP://WATER.EPA.GOV/TYPE/RSL/STREAMS.CFM Bibliography

7. A Yukon River is an example of Canadian river. Headwater- are the smaller tributaries that carry water from the upper reaches of the watershed to the main channel of the river. We now realize that these small streams are ultimately in control of the biological and chemical quality of the larger rivers as well as its susceptibility to damaging floods. Tributaries- A tributary is a freshwater stream that feeds into a larger stream or river. The larger, or parent, river is called the mainstream. The point where a tributary meets the mainstream is called the confluence. Tributaries, also called affluent, do not flow directly into the ocean. Delta- A delta is formed when a stream enters a relatively still water of an ocean or lake, its velocity drops abruptly, and the sediment being carried by the stream is then deposited.