Pacific salmon in the Canadian Arctic highlight a range-expansion pathway for sub-Arctic fishes

The R code and data to support the manuscript \"Pacific salmon in the Canadian Arctic highlight a range-expansion pathway for sub-Arctic fishes\" published by Dunmall & Langan et al. 2024 in Global Change Biology. Briefly, this study investigated the mechanisms behind variable, rising catches of Pacific salmon by subsistence fishers in the Canadian Arctic. Detailed descritptions of the data and the performed analyses are provided in the associated manuscript., Salmon catch data (2000-2022) were collected during regular fishing activities by subsistence fishers participating in the Arctic Salmon program (https://www.arcticsalmon.ca/home) and summarized to annual counts. These salmon counts were then compared to sea surface temperature (SST) and sea ice data derived from the NOAA OI SST V2 High Resolution Dataset (https://psl.noaa.gov/data/gridded/data.noaa.oisst.v2.highres.html). Specifically, environmental data, cropped to ocean areas using a provided shapefile, were analyzed in a polygon in the Chukchi Sea (vertices: [68.3°N, 170.0°W], [68.3°N, 166.4°W], [69.5°N, 166.4°W], [69.5°N, 170.0°W]) and a polygon in the Beaufort Sea (vertices: [70.5°N, 153.0°W], [69.8°N, 143.0°W], [71.3°N, 143.0°W], [72.0°N, 153.0°W]). For the Chukchi Sea polygon, the mean June SST and last day of the spring-summer period with a mean ice concentration of at least 0.5 were calculated. For the Beaufort Sea polygon, the number of days with a mean SST above 2°C and the ..., , # Pacific salmon in the Canadian Arctic highlight a range-expansion pathway for sub-Arctic fishes

[https://doi.org/10.5061/dryad.d51c5b0bh](https://doi.org/10.5061/dryad.d51c5b0bh)

The annual salmon subsistence catch data and the R code describing the analyses performed for the manuscript \"Pacific salmon in the Canadian Arctic highlight a range-expansion pathway for sub-Arctic fishes\" published by Dunmall and Langan et al. 2024 in Global Change Biology. 

## Description of the data and file structure

The zip file contains the R script to perform all of the analyses described in the manuscript and produce the main text figures, with the exception of the conceptual diagram included as Figure 2. Also included are the data files needed for the analyses and shapefiles used for generating covariates and making figures. Only the shape files we made through modification of existing data files are provided, with the source of the original file provided in the R script. Unmodified shape files ...