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Transcript 
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Flowing Water Habitats
Creeks, streams, and rivers
The flow of the water influences the lives of
the organisms inhabiting the waters and the
physical characteristics of the stream.
http://www.scienceclarified.com/landforms/images/ueol_03_img01
08.jpg
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Headwaters: streams that join together and
form a river
Near headwaters river usually flow fast and
currents are swift
Rocky bottom
Higher levels of D.O. due to flow and
temperature of the water.
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Velocity decreases
River gets wider and wider
Meanders become common (curves)
Pools: where water is deeper and slows down,
filled with fine sediments
Riffles: faster, shallower with rocky bottom
Run: fast flowing water, deeper water
The meandering Tigre River, Argentina . PHOTOGRAPH
REPRODUCED BY PERMISSION OF THE CORBIS
CORPORATION
Read more: http://www.scienceclarified.com/landforms/OceanBasins-to-Volcanoes/Stream-and-River.html#ixzz1147UMeyX
http://www.geographyhigh.connectfree.co.uk/s3riversgeoghigh26f.
gif
http://belmont.sd62.bc.ca/teacher/geology12/photos/erosionwater/Meander_processes.jpg
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Flat stretches of land on either side of a slow
moving river
During storms, rivers overflow and flood
these areas
When water recedes deposits of rich sediment
are left behind ; fertile land
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Less oxygen
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Warmer temperature
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Communities of catfish, algae, turtles,
dragonflies and other organisms that can live
in lower DO.
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Usually empties into an ocean or a lake.
Water slows even more
Sediment is deposited and creates new land
called a delta.
Where a river meets an ocean, freshwater
mixes with salt water, an estuary is formed.
Estuaries are important nurseries for lots of
aquatic organisms.
http://farm3.static.flickr.com/2117/2279411722_17c2675fb1.jp
g
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In temperate regions, leaves and other plant
parts (Coarse particulate organic matter or
CPOM) are the main source of energy
available to the stream ecosystem.
Headwaters: more CPOM
Benthic invertebrates: shredders and collectors
Fish: trout (colder more oxygenated water)
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Near headwaters:
high O2, colder
temperatures, CPOM
Further downstream:
lower O2, warmer
temperatures, FPOM
Affects which
species flourish in a
given area
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Down stream: Fine particulate organic matter
(FPOM) washed down from headwaters
Algae (both filamentous and planktonic) and
plants are more common because of slower
water and more sunlight.
Few shredders, more collectors and grazers.
Fish: Carp and catfish, tolerate lower D.O.
and warmer temperatures.
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