Interpopulation variation in growth, CTMax and metabolism among seasonal phenologies of Chinook Salmon

Conservation of species facing environmental change requires an understanding of interpopulation physiological variation. However, physiological data is often scarce and therefore pooled across populations and species, erasing potentially important variability between populations. Interpopulation variation in thermal physiology has been observed within the Salmonidae family, although it has not been associated with seasonally distinct migratory phenotypes (i.e., seasonal runs). To resolve whether thermal physiology is associated with life-history strategy we acclimated four Sacramento River juvenile Chinook salmon populations (Coleman fall-run, Feather River fall- and spring-run and Sacramento River Winter-run) exhibiting different seasonal migratory phenotypes (fall-, spring- and winter-run), at 11, 16 and 20°C and assessed variation in growth rate, critical thermal maxima and temperature-dependent metabolic traits. We identified population differences in the physiological parameters m..., There are two sets of metabolic data contained herein. The first (2022_CJFAS_Dryad_Metabolic_Dataset.csv) and the second (NOAA_Preliminary_Data-Winter-Run_Small.csv) were captured using different equipment due to their size. Metabolic data from the first dataset were gathered in the following way, methods for collection of the second dataset are appended to the bottom of this section. 
Fish underwent metabolic trials in one of four, 5 L automated swim tunnel respirometers (Loligo, Denmark). The four tunnels were split into two paired systems with two tunnels sharing a single sump and heat pump. Water for each swim tunnel system was pumped (PM700, Danner USA) from the sump into an aerated water bath surrounding each swim tunnel, and then returned to the sump. Sumps were supplied with non-chlorinated fresh water from a designated well and aerated with air stones. The temperature of the sump (and therefore the swim tunnels) was maintained (±0.5°C) by circulating water through a heat pump (..., , # Interpopulation Variation in growth, CTMax and Metabolism among seasonal phenologies of Chinook Salmon

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There are 4 datasets. One that pertains to growth measurements, one that pertains to CTMax data and the third contains data regarding metabolic performance. These first three were used in the 2022 CJFAS paper. The fourth dataset contains metabolic data for small Winter-run Chinook Salmon (2-3g), these data were gathered on the same cohort of fish as those used in the other datasets. These fish were only acclimated to 11C, whereas fish in the other datasets were acclimated to 11, 16, or 20C. The columns and descriptions for these three datasets are below.

Only fish used in the analysis for the CJFAS manuscript are included in this data. This excludes fish that did not recover from the metabolic or CTMax trials or fish from other populations that were measured during the same experimental seasons, which leads to gaps in the individual numbering of trial fish

## Column Specs: CJ...