Biological, physical, and chemical data from trawl surveys in coastal waters of Alabama and Mississippi from 28 Apr 2010 to 13 Oct 2011 (NODC Accession 0117516)

Abstract: Fishes and macroinvertebrates were collected using a 12.8m semi-balloon trawl with 5cm mesh in spring and fall of 2010 and 2011 in the coastal waters of Alabama and Mississippi. All species were identified to the lowest possible taxonomic level and counted. A wet weight estimate of total biomass (+ grams) was attained for each species using portable spring scales. Finfish collected in 2010 were measured for length (standard, fork, and/or total as appropriate).

Purpose: The trawls were part of a larger project that also included longline surveys to compare fish community structure in coastal Alabama and Mississippi before and after the Deepwater Horizon oil spill on April 20, 2010.

摘要：2010年及2011年的春、秋两季，研究人员于美国阿拉巴马州与密西西比州近岸海域，使用网目尺寸为5厘米的12.8米半囊式拖网（semi-balloon trawl）采集鱼类与大型无脊椎动物（macroinvertebrates）样本。所有物种均被鉴定至最低可行分类阶元并完成计数；采用便携式弹簧秤估算各物种的总鲜重生物量（单位：克）。2010年采集的硬骨鱼样本均测量其体长，根据实际情况选取标准长（standard length）、叉长（fork length）或全长（total length）。
研究目的：本次拖网采样为一项大型研究项目的组成部分，该项目同时包含延绳钓调查，旨在对比2010年4月20日深水地平线（Deepwater Horizon）原油泄漏事件发生前后，阿拉巴马州与密西西比州近岸海域的鱼类群落结构。