Nearshore Fishes Abundance and Distribution Data, California Collaborative Fisheries Research Program (CCFRP)

Data in this collection include the species and quantity of nearshore fishes caught during drifts conducted in and near California Marine Protected Areas (MPAs) between 2007 and 2023. The California Collaborative Fisheries Research Program (CCFRP) initially surveyed four protected areas and four nearby, fished reference areas in central California annually; the program expanded to 15 protected and 16 reference areas statewide in 2017. Data were generated from hook-and-line surveys conducted within 500x500 m grid cells positioned inside protected and reference areas. Each fish caught was identified to the species level whenever possible; otherwise, fish were identified to the lowest possible taxonomic level. The number of hours each angler spent fishing during each survey and the length of each fish caught were also recorded, enabling the calculation of biomass, Catch-Per-Unit-Effort (CPUE), and Biomass-Per-Unit-Effort (BPUE). This submission includes two derived data tables, CCFRP_derived_length_table.csv and CCFRP_derived_effort_table.csv, containing the number of fish of each species caught during each survey, their lengths, the total number of angler hours required to catch them, CPUE and BPUE. The R code used to obtain these tables from the raw data files is also included (CCFRP_derived_data_table_code_R.pdf). Raw data files from the CCFRP database used to create the derived data tables are available on the CCFRP GitHub Repository (https://github.com/ccfrp/DataONE-Derived-Data-Table-Code) along with the code used to extract these data. The boundaries for the MPAs referenced in this dataset and information on related long-term California MPA monitoring efforts can be found here: https://opc.dataone.org/view/doi:10.25494/P6V884 The CCFRP aims to develop rigorous survey methods and collect baseline data on the species, size composition and relative abundance of fishes associated with shallow rocky habitats inside proposed Marine Protected Areas (MPAs) and nearby fished reference areas. These data underpin an ongoing monitoring effort that engages the recreational fishing community to help evaluate changes in the species, size composition and relative abundance of fishes in MPA and reference sites after MPA establishment.本数据集收录了2007年至2023年间，在加利福尼亚海洋保护区（Marine Protected Areas, MPAs）及其毗邻海域开展漂流垂钓作业所捕获的近岸鱼类物种与数量信息。 加利福尼亚协作渔业研究计划（California Collaborative Fisheries Research Program, CCFRP）最初每年对加州中部的4个保护区及周边4个受捕捞参照区域开展调查；该计划于2017年将覆盖范围扩大至全州范围内的15个保护区与16个参照区域。 数据来源于在保护区及参照区域内的500×500米网格单元中开展的手钩钓调查。所有捕获的鱼类均尽可能鉴定至物种水平，若无法实现则鉴定至最低可行的分类学层级。同时记录了每位垂钓者在每次调查中的垂钓时长，以及每条捕获鱼类的体长，由此可计算生物量、单位捕捞努力量渔获量（Catch-Per-Unit-Effort, CPUE）以及单位捕捞努力量生物量（Biomass-Per-Unit-Effort, BPUE）。 本提交内容包含两份衍生数据表：CCFRP_derived_length_table.csv与CCFRP_derived_effort_table.csv，分别收录了每次调查中各物种的捕获数量、鱼类体长、捕获所需总垂钓时长、CPUE与BPUE信息。此外还附带了从原始数据文件生成上述数据表所用的R代码（CCFRP_derived_data_table_code_R.pdf）。 用于生成衍生数据表的CCFRP数据库原始数据文件，以及提取这些数据所用的代码，可通过CCFRP的GitHub仓库（https://github.com/ccfrp/DataONE-Derived-Data-Table-Code）获取。本数据集所涉及的海洋保护区边界，以及加州海洋保护区相关长期监测工作的相关信息，可通过以下链接获取：https://opc.dataone.org/view/doi:10.25494/P6V884。 CCFRP的目标是开发严谨的调查方法，并针对拟议海洋保护区及其周边受捕捞参照区域内浅岩生境相关鱼类的物种组成、体长结构与相对丰度收集基线数据。这些数据为一项持续开展的监测工作提供支撑，该工作邀请休闲垂钓群体参与，以评估海洋保护区设立后保护区与参照区域内鱼类的物种组成、体长结构及相对丰度的变化情况。