Nearshore finfish—live—fixed gear commercial fishing grounds, South Coast Region, Post MPA

This data set is a part of Point 97's project entitled: Establishing a Baseline and Assessing Initial Spatial and Economic Change in the California South Coast Commercial Fisheries. This project is a component of the California South Coast Marine Protected Area Baseline Monitoring Project that is designed to characterize the ecological and socioeconomic conditions and changes within the South Coast Region since MPA implementation. The South Coast study region extends from the north at Point Conception to the south at the California/Mexico border. This data set consists of data collected in the summer of 2013 from fisheries mapping interviews conducted with commercial fishermen who had nearshore finfish—live—fixed gear landings in the California South Coast in 2012. During interviews fishermen were asked to map their fishing grounds for 2012 and determine the relative importance of each fishing ground by allocating 100 pennies across their fishing grounds for this fishery. The spatial data from these interviews were then combined through an aggregation process where the weighted fishing grounds each fisherman gave were further weighted by their ex-vessel revenue from the nearshore finfish—live—fixed gear fishery in 2012. This created spatial data sets for each port for this fishery. For regional or all port data sets, port level data was aggregated by weighting each port by the port’s total ex-vessel revenue in 2012 for the fishery based on California Department of Fish and Wildlife commercial landings data. This data set represents the spatial extent and relative value of nearshore finfish—live—fixed gear commercial fishing grounds for the South Coast Region in the year 2012.

本数据集隶属于Point 97的研究项目，项目名称为《建立基线并评估加利福尼亚州南海岸商业渔业的初始空间与经济变化》。
该项目是加利福尼亚州南海岸海洋保护区（Marine Protected Area）基线监测项目的组成部分，旨在表征自海洋保护区实施以来南海岸区域的生态与社会经济状况及其变化。南海岸研究区域北起康塞普西翁角（Point Conception），南至加利福尼亚州与墨西哥边境。

本数据集包含2013年夏季开展的渔业测绘访谈采集的数据，访谈对象为2012年在加利福尼亚州南海岸开展近岸活捕鳍鱼定置渔具捕捞并实现渔获上岸的商业渔民。访谈期间，受访者被要求绘制其2012年的捕捞海域，并通过将100枚便士分配至各捕捞海域的方式，明确各捕捞海域的相对重要性。

随后通过聚合流程整合访谈得到的空间数据：将每位渔民提供的加权捕捞海域，再依据其2012年近岸活捕鳍鱼定置渔具渔业的上岸收益（ex-vessel revenue）进一步加权，以此生成该渔业各港口的空间数据集。

对于区域级或全港口数据集，则通过加权聚合各港口数据：依据加利福尼亚州鱼类与野生动物部（California Department of Fish and Wildlife）的商业渔获上岸数据，以各港口2012年该渔业的总上岸收益为权重进行聚合。

本数据集表征了2012年南海岸区域近岸活捕鳍鱼定置渔具商业捕捞海域的空间范围与相对价值。