Effects of Gravel Morphology on Fine Sediment Accumulation and Survival of Incubating Salmon Eggs

Effects of gravel morphlogy on fine sediment accumulation and survival of incubating salmon eggs . USDA For . Serv . Res . Pap . PNW - 220 , 16 p . , illus . Pacific Northwest Forest and Range Experiment Station , Portland , Oregon .

Effects of Gravel Morphology on Fine Sediment Accumulation and Survival of Incubating Salmon Eggs

Rate of fine sediment accumulation and survival of pink salmon eggs were determined for three types of stream gravels. At low stream flows, round gravel accumulated somewhat more sediment than other gravel types, while at higher discharges angular gravel accumulated more sediment. Survival of pink salmon eggs was slightly higher in angular gravel.

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