Scientific survey catch data: Bentho-demersal assemblages of the Gulf of Lion (North-western Mediterranean) from 1957 to 1960

this dataset illustrates a study of the trawlable seabed of the gulf of lion, which took place over four years between 1957 and 1960. an inventory of the bentho-demersal community was carried out by bottom trawling. measurements of total weight and length were taken as well as sex determination. this study was carried out with the research vessel président théodore tissier up to 1959 and with the research vessel la thalassa in 1960.in 1957, the objective was to roughly evaluate the trawling possibilities on the french mediterranean coast between 200 and 1,000 metres. this was furthered in 1958 to evaluate the inter-annual yield variations, compare the yield from daytime and night-time fishing and make observations on the nature and density of the fauna on the continental shelf in the gulf of lion. in 1959, the objective was to study the fishing possibilities on the southern coasts of the western basin, from ceuta to the strait of sicily. in 1960, the objective was to obtain additional information on the trawlable bottoms of the languedoc region as well as some references on the balearic region.

本数据集展示了1957年至1960年间，在狮子湾海域进行的为期四年的底拖网可捕捞海底研究。通过底拖网作业，对底栖-近底层生物群落进行了详细调查，并记录了总重量和长度，同时进行了性别鉴定。该研究自1959年起由科研船总统泰奥多尔·蒂西耶号执行，至1960年则由科研船拉·塔拉萨号承担。1957年，研究旨在对法国地中海沿岸200至1000米范围内的拖网可能性进行粗略评估。1958年，研究进一步深化，旨在评估年度产量变化、比较日间与夜间捕捞的产量，并对狮子湾大陆架上的生物种类和密度进行观察。1959年，研究目标转向研究西部盆地南部海岸，从休达至西西里海峡的捕鱼可能性。1960年，研究旨在获取关于朗格多克地区可捕捞海底的更多信息，以及关于巴利阿里地区的某些参考数据。