TPWD HARC Texas Coastal Fisheries Lower Laguna Madre Gill Net

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 gill net data collected for the Lower Laguna Madre system in Texas from 1976 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）依托多种采样设备开展鱼类与贝类群落的渔业独立监测工作，所用采样设备包括袋曳网、拖网、刺网及牡蛎耙网。TPWD采用随机采样方案搭配多设备组合开展监测，并对采集到的所有样本鉴定至尽可能低的分类学单元，同时统计采集个体的数量。本数据集涵盖1976年至2008年间，针对得克萨斯州下拉古纳马德雷（Lower Laguna Madre）水系开展的刺网采样数据。所采集的数据包含描述采样位置与时间的时空信息、采样设备信息、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个体数。休斯敦高级研究中心（Houston Advanced Research Center, HARC）计算了相对丰度数据，其计算公式为某一物种在单个样本中的捕获量除以该样本内捕获的总动物数量。对于TPWD物种采样名录中未在本次采样中捕获的物种，均记录了其未出现数据。