TPWD HARC Texas Coastal Fisheries Sabine Lake Bay Trawl

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 bay trawl data collected for the Sabine Lake bay system in Texas from 1986 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）在针对鳍鱼与贝类群落开展渔业独立监测时，采用了多种采样渔具，具体包括围网袋、拖网、刺网及牡蛎拖网。TPWD采用随机采样方案搭配多渔具组合，并会对采集到的所有样本鉴定至尽可能低的分类单元，同时记录其个体数量。本数据集涵盖1986年至2008年间，针对得克萨斯州萨宾湖海湾系统采集的海湾拖网采样数据。所采集的数据包含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：其计算方式为某一物种在单一样本中的捕获量除以该样本内捕获的动物总数量。对于TPWD物种采样名录中未在采样过程中捕获的物种，均记录了其缺失数据。