Biomass of invertebrate bycatch on the East- and West-Greenland shelf during Walther Herwig III cruise WH379

The study on invertebrate communities in East- and West-Greenland shelf waters was embedded in a fisheries survey carried out during the 379th expedition of the German fisheries vessel Walther Herwig III of the Thünen Institute of Sea Fisheries, Hamburg, Germany. The aim of the study was a coarse classification of the bycatch comprising macrobenthic organisms. On the one hand the marine ecosystem of this area provides food for commercially valuable fish stocks and plays, potentially an important role in the remineralisation of nutrients. On the other hand it experiences stress by traditional bottom trawling as well as anthropogenic and natural climate variability. As a consequence the study can provide a baseline to detect further changes in the composition of this component of a sub-arctic marine ecosystem.

本研究聚焦于东格陵兰与西格陵兰陆架水域的无脊椎动物群落，其数据来源于德国汉堡蒂嫩海洋渔业研究所（Thünen Institute of Sea Fisheries）所属德国渔业调查船‘瓦尔特·赫维希三世号’（Walther Herwig III）第379次科考期间开展的渔业调查。本研究旨在对包含大型底栖生物（macrobenthic organisms）的兼捕物进行粗略分类。一方面，该区域的海洋生态系统为具有商业价值的鱼类资源提供食物，且可能在营养盐再矿化过程中发挥重要作用；另一方面，该生态系统正承受传统底拖网捕捞、人为活动及自然气候变率带来的压力。因此，本研究可为监测亚北极海洋生态系统中这一组成部分的进一步变化提供基线数据。