CHALIST survey catch data: Bentho-demersal assemblages of the Gulf of Lion (North-western Mediterranean) from 1983 to 1992

this dataset includes all the chalist surveys between 1983 and 1992, that is five surveys undertaken in 1983, 1985, 1986, 1987 and 1992. the aim of chalist surveys was to evalute the demersal resources of the gulf of lion in order to monitor annual variations of the main commercial species in terme of spatial distribution, average weight and size and age compositions and abundance indices. all the target species collected were identified, weighted and counted. length measurements were also carried out for a number of species.

本数据集囊括了1983年至1992年间的所有Chalist调查数据，具体包括1983年、1985年、1986年、1987年和1992年进行的五次调查。Chalist调查的宗旨在于评估利翁湾的底栖资源，旨在监测主要商业物种年度空间分布、平均体重与尺寸、年龄组成以及丰度指数的年度变化。所有收集的目标物种均经过鉴定、称重和计数。此外，对部分物种还进行了长度测量。