Fishery impacts - CA commercial lobster catch and effort, and trap distribution around marine reserves

These data describe landings and fishing effort for the CA commercial spiny lobster fishery. Data are contained in two tables: 1) a time series collected by the California Fish and Wildlife (CDFW) of lobster catch (kg) and effort (lobster trap pulls) by year (1998-2020) and location (geographic fishery blocks). Catch is recorded and reported to CDFW by fish processors (buyers) with “fish tickets”. Trap pulls are recorded and reported by fishermen with logbooks. 2) The number of traps counted in the water at increasing distances from the boundary of marine reserves, three reserves located in the northern region of the fishery and three from the southern region of the fishery, in November 2022.本数据集记录了加利福尼亚州商业棘龙虾渔业的渔获上岸量与捕捞努力量相关信息。数据集包含两张数据表：1) 年度时间序列数据：1998至2020年间，由加州鱼类与野生动物局（California Department of Fish and Wildlife, CDFW）按年份及地理渔业区块统计的龙虾捕捞量（单位：千克）与捕捞努力量（龙虾诱捕笼起捕次数）数据。其中，捕捞量由鱼类加工商（收购方）凭“捕捞凭证”上报至CDFW，诱捕笼起捕次数则由渔民通过航海日志提交上报。2) 空间分布调查数据：2022年11月，针对该渔业区域内的3个北部海域海洋保护区与3个南部海域海洋保护区，按距保护区边界递增的距离梯度，统计得到的对应水域内的龙虾诱捕笼布设数量。