Individual Measurements from trawl surveys of fish and invertebrates in Coastal Alabama, Mississippi, and the Chandeleur Islands, January - November, 2017

Fishes and macroinvertebrates were collected using a 12.8m semi-balloon otter trawl with 4 cm mesh in Spring and Fall of 2017 in the coastal waters of Alabama and Mississippi, as well as the Chandeleur Islands. Length measurements and individual biomass of a subset of fish and macroinvertebrates taken in the trawls were recorded for each trawl. Length measurements appropriate for each species were recorded to the nearest millimeter, and biomass was recorded to the gram.2017年春季与秋季，研究团队于阿拉巴马州、密西西比州近海水域及尚德利尔群岛（Chandeleur Islands），采用网目尺寸为4厘米、总长12.8米的半球型水獭拖网（semi-balloon otter trawl）采集鱼类与大型无脊椎动物（macroinvertebrates）样本。针对每一轮拖网作业，均记录了该次拖获样本中选取的部分鱼类及大型无脊椎动物的体长测量数据与个体生物量。其中，适配各物种的体长测量值精确至最接近的1毫米，个体生物量则精确至克（gram）。