Standardised CPUE of cod and hydrographic data

The dataset contains information on all the variables at the aggregation level of individual bottom trawl hauls as used in the analyses presented in "Spatio-temporal dynamics of a fish predator: density-dependent and hydrographic effects on Baltic Sea cod population". Year: year when the cod sample was collected; Lon: longitude (decimal-degree) of the position where the cod sample was collected; Lat: latitude (decimal-degree) of the position where the cod sample was collected; Depth: bottom depth (m) where the cod sample was collected; AG3: catch-per-unit-effort (kg/h) of cod of age 3+ of the trawl station; Oxy: modelled bottom oxygen (ml/L) associated to the trawl station; Sal: modelled bottom salinity (psu) associated to the trawl station; Crv: cod reproductive volume (km3) estimated for the year and ICES subdivision of the trawl station; Stk: stock size (thousands) of the eastern Baltic cod in the year of the sample from stock assessment (ICES 2013).本数据集包含论文《鱼类捕食者的时空动态：密度依赖与水文效应对波罗的海鳕鱼种群的影响》（Spatio-temporal dynamics of a fish predator: density-dependent and hydrographic effects on Baltic Sea cod population）的分析中所使用的、所有以单个拖网捕捞站位为聚合层级的变量相关信息。 Year：鳕鱼样本的采集年份； Lon：鳕鱼样本采集位置的经度（十进制度）； Lat：鳕鱼样本采集位置的纬度（十进制度）； Depth：鳕鱼样本采集站位的底层水深（单位：米）； AG3：该拖网站位3龄及以上鳕鱼的单位捕捞努力量渔获量（catch-per-unit-effort，单位：千克/小时）； Oxy：与该拖网站位相关的模拟底层溶氧量（单位：毫升/升）； Sal：与该拖网站位相关的模拟底层盐度（单位：实用盐度单位，psu）； Crv：基于该拖网站位所属年份及国际海洋考察理事会（ICES）分区估算的鳕鱼繁殖体积（单位：立方千米）； Stk：基于2013年国际海洋考察理事会（ICES）资源评估结果，样本采集年份东波罗的海鳕鱼的种群资源量（单位：千）。