Rivers streams
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Rivers & Streams. By: Lindsey Keiser. Introduction. What I will Discuss: Geography Structure Physical Condition Biology Human Influence. Geography. Channels are formed from rain runoff. River Basin- area of a continent that is drained by a river. Ex. Mississippi River Basin.

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Rivers & Streams

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Rivers streams

Rivers & Streams

By: Lindsey Keiser


Introduction

Introduction

What I will Discuss:

Geography

Structure

Physical Condition

Biology

Human Influence


Geography

Geography

  • Channels are formed from rain runoff.

  • River Basin-area of a continent that is drained by a river.

    • Ex. Mississippi River Basin.

  • The River Basins are separated by watersheds.


  • Structure

    Structure

    • Pools, runs and rapids change along there Lengths.

    • The wetted & active channels are found where rivers divided at there widths.

    • Riparian Zone-transition between the aquatic environment & the terrestrial environment.

    • The Water surface, water column and the bottom or benthic zone, divide vertically along the river.

    • Below this zone is the hyportheic zone, where surface water becomes ground water

    • The Phreatic zone, is where ground water is found.


    Physical conditions

    Physical Conditions

    • Light Penetration

    • Two main factor:

      • First being that organic and inorganic matter falls into the river

      • Second being that the current disturbs the sediments on the bottom and the particles prevent light from getting in.

    • River Currents

    • The current does a lot for the river and the river organisms.

    • The amount of water a river carries is called river discharge.

    • The health of rivers and streams depends upon keeping the natural flow for a region intact.


    Biology

    Biology

    • River continuum theory, states that in temperate regions leaves and other plant parts are the main source of energy.

    • The coarse particulate organic matter (CPOM), when entering is attacked by microbes (fungi).

      • When it is colonized by the fungi it becomes nutritious for the invertebrates.

  • The invertebrates are dominated by two groups: Shredders and the collectors.

    • The collectors fed on fine particulate organic matter(FPOM).

  • This theory predicts that FPOM will be a source of energy when washed downstream.

  • Most of the invertebrates live on the sediments on the bottom.


  • Examples of animals that live in rivers and streams

    Examples of animals that live in rivers and streams


    Human influence

    Human Influence


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