Data from: Simulating nutrient release from parental carcasses increases the growth, biomass and genetic diversity of juvenile Atlantic salmon ...

• Main Authors: McLennan, Darryl, Auer, Sonya K., Anderson, Graeme J., Reid, Thomas C., Bassar, Ronald D., Stewart, David C., Cauwelier, Eef, Sampayo, James, McKelvey, Simon, Nislow, Keith H., Armstrong, John D., Metcalfe, Neil B.
• Format: Dataset
• Language: English
• Published: Dryad 2019
• Subjects: oligotrophic; migration barriers; marine derived nutrients; Phosphorus; Atlantic salmon; Salmo salar
• Online Access: https://dx.doi.org/10.5061/dryad.c6v3838; https://datadryad.org/stash/dataset/doi:10.5061/dryad.c6v3838

1. The net transport of nutrients by migratory fish from oceans to inland spawning areas has decreased due to population declines and migration barriers. Restoration of nutrients to increasingly oligotrophic upland streams (that were historically salmon spawning areas) have shown short-term benefits for juvenile salmon, but the longer-term consequences are little known. 2. Here we simulated the deposition of a small number of adult Atlantic salmon Salmo salar carcasses at the end of the spawning period in five Scottish upland streams (‘high parental nutrient’ treatment), while leaving five reference streams without carcasses (‘low parental nutrient’ treatment). All streams received exactly the same number of salmon eggs (n = 3,000) drawn in equal number from the same 30 wild-origin families, thereby controlling for initial egg density and genetic composition. We then monitored the resulting juvenile salmon and their macroinvertebrate prey, repeating the carcass addition treatment in the next spawning season. ... : Macroinvertebrate biomass and abundanceData corresponding to the analyses of macroinvertebrate abundance (individuals min-1) and biomass (mg dry mass min-1) when focal fish were age 0+ (May-June 2016) and age 1+ (March 2017) in streams with low (0) and high (1) parental nutrient levels. Please see Table S1 in Supplementary Information for further details of each stream.Salmon focal cohort - density and biomass (age 0+ & 1+)Data corresponding to the analyses of density (individuals m-2) and biomass (g m-2) of juvenile Atlantic salmon (focal cohort) captured at age 0+ (July 2016) and age 1+ (July 2017) in streams with low (0) and high (1) parental nutrient levels. Please see Supplementary Information for further details of each stream.Salmon focal cohort - fork length & body mass (age 0+)Data corresponding to the analyses of fork length (mm) and body mass (g) of juvenile Atlantic salmon (focal cohort) at age 0+ in streams with low (0) and high (1) parental nutrient levels. Please see Supplementary ...