CSIRO, Jack Mackerel (Trachurus declivis) surveys, Tasman Sea, Australia (1978)

<p>The data were obtained from 3 surveys in the Tasman Sea (NSW and Victoria coasts) in 1978. Data were obtained from acoustic and trawl surveys of Jack mackerel (Trachurus declivis) and other demersal and pelagic fish. Length, sex, numbers, weight and target signal strength were determined.</p>
<p>This data has been republished (2022-09-05 with additional details of each occurrence where they can be one of three types: catch composition (counts per taxa and optional aggregated weights by trawl event), catch measurements (length and/or weight) of individual taxa and/or catch specimens and their stored location. The occurrence type is recorded in occurrenceremarks.</p>

本研究数据源自1978年对塔斯曼海（新南威尔士州和维多利亚州海岸）进行的3项调查。数据包括对大眼鲷（Trachurus declivis）及其他底栖和浮游鱼类进行的声学调查和拖网调查。记录了鱼类长度、性别、数量、体重和目标信号强度。

该数据集已重新发布（发布日期为2022年9月5日，并增加了每起事件的详细信息，这些详细信息可能包括三种类型之一：捕捞组成（按物种分类计数以及可选的拖网事件聚合重量）、个体物种及/或捕获样本的测量数据（长度和/或重量）及其存储位置。发生类型记录在occurrenceremarks字段中。）