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Salmon Nutrient Cycling

Salmon Nutrient Cycling. Accessing the Terrestrial Ecosystems. Movement of Marine-Derived Nutrients. Salmon Carcass. Scavengers feed on carcass. Scavenger feces deposited in forest. Scavenger hauls carcass into forest. Marine-derived nutrients enter soil. Nutrients taken up

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Salmon Nutrient Cycling

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  1. Salmon Nutrient Cycling Accessing the Terrestrial Ecosystems FREEING THE ELWHA

  2. FREEING THE ELWHA

  3. Movement of Marine-Derived Nutrients Salmon Carcass Scavengers feed on carcass Scavenger feces deposited in forest Scavenger hauls carcass into forest Marine-derived nutrients enter soil Nutrients taken up by vegetation through roots Herbivores feed on vegetation FREEING THE ELWHA

  4. Coyote with a coastal cutthroat trout How a Coyote Helps a Deer FREEING THE ELWHA

  5. Using Markers to Determine Nutrient Origins The stable isotope N15 occurs at a higher rate in marine organisms than in freshwater. Salmon biomagnify N15 through the trophic levels Elevated N15 levels in freshwater environments is a sign of it originating in marine environments. FREEING THE ELWHA

  6. Using N15 to Trace the Past By examining the N15 levels in lake sediments, scientists can even estimate the salmon densities of the ancient past FREEING THE ELWHA

  7. This project was made possible in part by a grant from Washington’s National Park Fund. FREEING THE ELWHA

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