Annual salmon hatchery releases from the Hatchery Release Report Form, Alaska, 1952-2017

The data was taken from the Hatchery Release Report on the Alaska Department of Fish and Game website (https://mtalab.adfg.alaska.gov/CWT/reports/hatcheryrelease.aspx) on 04-04-2018. The data file HR002286.csv includes the annual salmon hatchery release data from 1952-2017 in Alaska. This dataset includes the total release count from different release agencies throughout the state. The file lists information about coded wire tag and Alaskan non-coded wire tag groups released since 1968. While there is information about non-Alaskan coded wire tag groups from the data, it is primarily intended for Alaskan Hatchery production release summaries. This dataset was generated by selecting all releases (including non-thermally marked), from all release agencies, species, and rearing codes, from the state of Alaska. The district_region_lut.csv file enables assignment of region for the State of Alaskan Salmon and People (SASAP) project to be assigned based on the district information. Hatchery_releases.csv is generated from HR002286.csv and district_region_lut.csv by the Rmd, which adds the SASAP region and district information, converts some codes (such as species codes) to more readable names, and makes some summary plots. Also included in this dataset is an R markdown document that pulls in data from Alaska Department of Fish and Game, Division of Commercial Fisheries. 2018. Salmon hatchery return data, 1975-2016. Knowledge Network for Biocomplexity. doi:10.5063/F12805X0, and generates plots showing returns and releases by both region and species. The plots are also included as standalone objects.

本数据集的数据来源于2018年4月4日从阿拉斯加州鱼类与狩猎部（Alaska Department of Fish and Game, ADFG）官网（https://mtalab.adfg.alaska.gov/CWT/reports/hatcheryrelease.aspx）发布的孵化场放流报告。数据文件HR002286.csv包含1952年至2017年阿拉斯加地区年度鲑鱼孵化场放流数据，涵盖全州各放流机构的总放流量统计。本数据集包含1968年以来放流的编码线标（coded wire tag）与阿拉斯加本地非编码线标组别相关信息。尽管数据中包含非阿拉斯加编码线标组别的相关记录，但本数据集主要面向阿拉斯加孵化场生产放流汇总报告。本数据集通过筛选阿拉斯加州范围内所有放流机构、物种及育苗代码对应的全部放流记录（包括未进行热标记的个体）生成。district_region_lut.csv文件可用于基于行政区划信息，为阿拉斯加鲑鱼与人类项目（State of Alaskan Salmon and People, SASAP）匹配对应区域。Hatchery_releases.csv由HR002286.csv与district_region_lut.csv通过R Markdown脚本生成，该脚本新增了SASAP区域及行政区划信息，将部分代码（如物种代码）转换为更易读的名称，并生成了部分汇总图表。本数据集还包含一份R Markdown文档，该文档从阿拉斯加州鱼类与狩猎部商业渔业司获取了2018年发布的1975-2016年鲑鱼孵化场回捕数据（来源：生物复杂性知识网络（Knowledge Network for Biocomplexity），DOI：10.5063/F12805X0），并生成了按区域及物种分类的回捕与放流情况图表，这些图表也以独立对象形式包含在本数据集中。