TPWD HARC Texas Coastal Fisheries Aransas Bay Bag Seine

The Texas Parks and Wildlife Department (TPWD) utilizes several sampling gears for fisheries-independent monitoring of finfish and shellfish communities. They include bag seines, trawls, gill nets and oyster dredges. TPWD uses multiple gears in a random sampling protocol, and they identify (to the lowest taxonomic unit possible) and count everything that they collect. This dataset contains bag seine data collected for the Aransas bay system in Texas from 1977 to 2008. Collected data also included spatial and temporal information describing the sample location and time, collection gear information, hydrological data (e.g. dissolved oxygen, water temperature, and salinity), weather conditions, species caught, and number of each species captured. Houston Advanced Research Center (HARC) calculated the relative abundance data, calculated as the catch of a particular species in a sample divided by the total number of animals captured in that sample. Absence data was recorded for species on the TPWD species sampling lists that were not captured during sampling.得克萨斯州公园与野生动物部（Texas Parks and Wildlife Department, TPWD）采用多种采样渔具，开展针对鳍鱼与贝类群落的渔业独立监测工作，所用渔具包括袋围网、拖网、刺网及牡蛎挖捕网。TPWD采用多渔具随机采样方案，对采集到的所有样本鉴定至尽可能低的分类单元，并统计其数量。本数据集包含1977年至2008年间，针对得克萨斯州阿兰瑟斯湾系统采集的袋围网采样数据。所采集的数据涵盖描述采样位置与时间的时空信息、采样渔具信息、水文数据（如溶解氧、水温和盐度）、天气状况、捕获物种及各物种的捕获数量。休斯顿高级研究中心（Houston Advanced Research Center, HARC）计算了相对丰度数据：相对丰度为某一样本中特定物种的捕获量除以该样本中所有捕获动物的总数量。对于TPWD物种采样名录中未在采样期间捕获的物种，均记录其缺失数据。