| Summary: | Brood tables, also called run reconstructions, utilize annual estimates of the total run (commercial catch plus escapement), and samples of ages, to estimate the number of recruits per age class. These data are useful for salmon biologists to understand salmon productivity and salmon life histories. These data can come in a number of different formats, but generally follow the pattern of: rows for each brood year, and columns for the estimated number of fish in each age class. This dataset consists of reformatted coho salmon brood tables that have been compiled together. These datasets were gathered as part of the State of Alaska Salmon and People project (https://alaskasalmonandpeople.org/). The file "CohoBroodTables_FW_SW_Age.csv" includes stocks where age classes are in freshwater/saltwater notation (number of winters in freshwater, followed by number of winters in saltwater). The file "CohoBroodTables_TotalAge.csv" includes stocks where age classes are presented as total age (number of winters in freshwater + number of winters at sea + 1). Stocks that have data in freshwater/saltwater age had their total age calculated and were then added to the total age table. The file cohoBroodTableProcessing.Rmd details the data reformatting steps in R Markdown, and cohoBroodTableProcessing.html is the html output of the Rmd file. The file StockInfo_Coho.csv lists the chinook stocks that are included in this package, and SourceInfo_Coho.csv lists the data sources for each Source.ID in the data files.
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