Linking groundwater-surface water exchange to food production and salmonid growth
2015
Mejia, Francine Harriet | Baxter, Colden V. | Berntsen, Eric Karl | Fremier, Alexander K.
Materials, energy, and organisms from groundwater serve as resource subsidies to lotic systems. These subsidies influence food production and post-emergent fish growth and condition through nutrient inputs and water temperature changes. To test whether post-emergent fish grew faster in gaining sites, we grew hatchery post-emergent salmon in enclosures, sampled periphyton, benthic invertebrates and wild salmon, and modeled fish growth across a gradient of groundwater-surface water exchange. Fish grew almost twice as fast in gaining (2.7 % g d
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