Commercial salmon harvest data, 1882-2016

Commercial harvest data of salmon are available from the Commercial Fisheries Entry Commission, however, depending on the resolution of these data, some years in some fisheries are confidential to protect the identity of the fishers and processors working in that fishery. In some cases, the Alaska Department of Fish and Game (ADFG) is granted a waiver by those fishers and processors to published annual data at the commercial fishing area level in annual reports. In an effort to analyze whether trends in confidentiality levels would skew commercial harvest data sourced directly from the CFEC, commercial harvest data were compiled from reports for all regions of Alaska except Prince William Sound, Southeast, and the Arctic. The data was taken from annual salmon fishery management reports, provided by the Alaska Department of Fish & Game, Division of Sport Fish and Commercial Fisheries (http://www.adfg.alaska.gov/sf/publications/). The data from Prince William Sound and Southeast Alaska were not included because the amount of fishers and processors in these regions rarely result in confidential data; the Arctic region was not included due to the lack of commercial fisheries. This dataset includes the original reports as pdf files, the data extracted from the reports, an R markdown file that reformats and compiles the extracted data (CommercialHarvest_Reports.Rmd), and the reformatted data (Commercial_Harvest_Reports.csv). Commercial salmon harvests were categorized in numbers of each fish species by year. In the reformatted dataset, areas were combined and renamed to corresponding SASAP regions, and some data removed to ensure that combined areas had consistent temporal coverage.

本数据集的商业鲑鱼捕捞数据可从商业渔业准入委员会（Commercial Fisheries Entry Commission, CFEC）获取，但受限于数据精细程度，部分渔业的部分年份数据因需保护该渔业内渔民与加工商的身份而处于保密状态。在部分情形下，阿拉斯加鱼类和野生动物部（Alaska Department of Fish and Game, ADFG）可获得相关渔民与加工商的豁免授权，得以在年度报告中按商业渔区级别发布年度捕捞数据。为分析保密级别变化是否会偏倚直接源自CFEC的商业捕捞数据，研究人员从阿拉斯加除威廉王子湾、阿拉斯加东南部及北极地区外所有区域的报告中汇编了商业捕捞数据。本次数据取自阿拉斯加鱼类和野生动物部游钓与商业渔业司发布的年度鲑鱼渔业管理报告（http://www.adfg.alaska.gov/sf/publications/）。未纳入威廉王子湾与阿拉斯加东南部的数据，因该区域渔民与加工商数量极少，几乎不会产生保密数据；北极地区则因无商业渔业活动未被纳入。本数据集包含以PDF文件形式存储的原始报告、从报告中提取的原始数据、用于重新格式化并汇编提取数据的R Markdown文档（CommercialHarvest_Reports.Rmd），以及重新格式化后的数据集（Commercial_Harvest_Reports.csv）。商业鲑鱼捕捞量按年份与各鲑鱼物种的捕捞数量进行分类统计。在重新格式化后的数据集内，原有区域被合并并重命名为对应的SASAP区域，同时移除了部分数据以确保合并后的区域具有一致的时间覆盖范围。