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The Ecology Of Running Waters

The Hydrological Cycle

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The Nile River

The Nile River

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The Amazon River

The Amazon River

Mississippi-Missouri River

Mississippi-Missouri River

“The river is the carpenter of its own edifice”
                                                 Luna Leopold

“The river where you set you foot just now is gone, those waters giving way to this, then this”   ___ Heraclitus

River Meanders

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Origins Of Rivers:
Aquifers

Origins Of Rivers:
Springs

Origins Of Rivers:
Underground rivers

Physical Characteristics

Factors Affecting The Temperature Regime Of A Stream

Stream Order*

Stream Order:
General Considerations

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Rivers Are Linear Gradients

Chemical Characteristics

              Components Of Fresh water

A. Dissolved Inorganic Compounds
1. Calcium
2. Magnesium
3. Sodium
4. Iron
5. Sulfate
6. Chloride

B. Particulate Inorganic Compounds
1. Silt
2. Suspended material

C. Dissolved Organic Compounds
1. Nitrogen
2. Phosphorous
3. Bicarbonate

Productivity

Autochthanous vrs Allochthanous

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Primary Productivity

River Types

River Types: Freestone

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River Types: Feeder Streams

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River Types: Limestone

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River Types: Tailwater Fisheries

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Autochthanous vrs Allochthanous:

Food Webs

Trophic Levels

Trophic Levels

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What Happens To The Trophic Levels Of An Ecosystem When A Keystone Species Is Removed?

You Get More Algae!

Why?

Trophic Levels And Keystone Species:
Removal Of A Keystone Species

Trophic Levels And Energy Flow

Energy Flow Into The River:
The Role Of Leaves

Energy Considerations

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Energy Flow Into The River:
The Role Of Leaves

Macroinvertebrates And The Processing Of Leaves

The Value Of Trees To The River

Food Webs:
Competition Between Terrestrial
And Aquatic Life Forms

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Effects Of Dams On Rivers:
The Columbia River System

Floods

Drought

Pollutions:
Niagara River  Area of Concern

Nutrient Loading

Mississippi-Missouri River

Mississippi-Missouri River

Encroachment

Pollutions

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