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Mapping and classifying the seabed of the West Greenland continental shelf

机译：对西格陵兰大陆架海床进行制图和分类

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摘要

Marine benthic habitats support a diversity of marine organisms that are both economically and intrinsically valuable. Our knowledge of the distribution of these habitats is largely incomplete, particularly in deeper water and at higher latitudes. The western continental shelf of Greenland is one example of a deep (more than 500 m) Arctic region with limited information available. This study uses an adaptation of the EUNIS seabed classification scheme to document benthic habitats in the region of the West Greenland shrimp trawl fishery from 60 degrees N to 72 degrees N in depths of 61-725 m. More than 2000 images collected at 224 stations between 2011 and 2015 were grouped into 7 habitat classes. A classification model was developed using environmental proxies to make habitat predictions for the entire western shelf (200-700 m below 72 degrees N). The spatial distribution of habitats correlates with temperature and latitude. Muddy sediments appear in northern and colder areas whereas sandy and rocky areas dominate in the south. Southern regions are also warmer and have stronger currents. The Mud habitat is the most widespread, covering around a third of the study area. There is a general pattern that deep channels and basins are dominated by muddy sediments, many of which are fed by glacial sedimentation and outlets from fjords, while shallow banks and shelf have a mix of more complex habitats. This first habitat classification map of the West Greenland shelf will be a useful tool for researchers, management and conservationists. (C) 2017 Elsevier Ltd. All rights reserved.
机译：海洋底栖生境支持具有经济和内在价值的多种海洋生物。我们对这些栖息地分布的了解在很大程度上还不完整，尤其是在更深的水域和更高的纬度中。格陵兰岛的西部大陆架是北极深处（超过500 m）的一个例子，可提供的信息有限。这项研究使用了EUNIS海底分类方案的改编，以记录西格陵兰虾拖网渔业区域内底栖生物的栖息地，其深度为60度至72度，深度为61-725 m。 2011年至2015年期间，在224个站点收集的2000多张图像被分为7个栖息地类别。使用环境代理开发了分类模型，以预测整个西部大陆架（北纬72度以下200-700 m）的栖息地。生境的空间分布与温度和纬度相关。北部和较冷的地区出现泥泞的沉积物，而南部则占主导地位的是沙石地带。南部地区也更温暖，洋流更强。泥沼栖息地最为广泛，覆盖了研究区域的三分之一。通常的模式是，深水通道和盆地以泥泞的沉积物为主，其中许多以冰川沉积和峡湾的出水口为食，而浅岸和陆架则具有更为复杂的栖息地。西格陵兰陆架的第一张栖息地分类图将为研究人员，管理人员和保护主义者提供有用的工具。 （C）2017 Elsevier Ltd.保留所有权利。

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