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首页> 外文期刊>Polar biology >Epibenthic megafauna communities in Northeast Greenland vary across coastal, continental shelf and slope habitats
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Epibenthic megafauna communities in Northeast Greenland vary across coastal, continental shelf and slope habitats

机译：格陵兰东北地区的Epibenthic Megafauna社区各种各样，沿海，大陆架和坡栖息地各不相同

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摘要

The marine area of Northeast Greenland belongs to the largest national park in the world. Biodiversity assessments and tailored conservation measures often target specific physiographic or oceanographic features of an area for which detailed knowledge on their biological communities is incomplete. This study, therefore, characterizes epibenthic megafauna communities in a priori defined seabed habitats (fjord, shelf, shelf break and slope) and their relationship to environmental conditions in Northeast Greenland waters as a basis for conservation and management planning. Megabenthos was sampled from the Bessel Fjord across the shelf to the upper continental slope between latitudes 74.55 degrees N-79.27 degrees N and longitudes 5.22 degrees W-21.72 degrees W by Campelen and Agassiz trawls at 18 locations (total of 33 samples) at depths between 65 and 1011 m in August 2015 and September 2017. A total of 276 taxa were identified. Gross estimates of abundance ranged from 4 to 854 individuals 1000 m(-2)and biomass ranged from 65 to 528 g wet weight 1000 m(-2)(2017 only). The phyla Arthropoda and Porifera contributed the most to taxon richness, while Mollusca and Echinodermata were the most abundant, and Echinodermata had the highest biomass of all phyla. Fjord, shelf, shelf break and slope seabed habitats revealed different megafaunal communities that were partly explained by gradients in depth, bottom oxygen concentration, temperature, salinity, and turbidity. The present study provides a current baseline of megabenthos across seabed habitats in Northeast Greenlandic waters and reveals putative connections between Arctic and Atlantic biota.
机译：格陵兰岛东北地区属于世界上最大的国家公园。生物多样性评估和量身定制的保护措施往往是针对一个地区的特定地理学或海洋特征，为他们的生物社区详细了解是不完整的。因此，这项研究表征了以先验定义的海底栖息地（峡湾，货架，货架休息和坡度）在东北地区水域的环境条件中的关联中的表现为百分之二宫社区，以及保护和管理规划的基础。在架子上从贝塞尔峡湾中的贝塞尔峡湾采样到纬度地区的上部大陆坡度，在74.55度N-79.27度N度和长度5.22°W-21.72度，在18个位置（总共33个样本）之间的18个位置（总共33个样品）之间2015年8月和2017年9月65日和1011米。共识别出276个分类赛。丰富的丰富估计范围为4至854个个体1000米（-2）和生物量，从65到528g湿重量1000 m（-2）（仅限2017年）。 Phyla节肢动物和Porifera贡献了分类素质最多，而Mollusca和Echinodermata是最丰富的，并且Echinodermata均具有最高的生物量。峡湾，货架，货架休息和斜坡海底栖息地透露了不同的兆普朗社区，这些社区是深度，底部氧气浓度，温度，盐度和浊度的梯度部分解释。本研究提供了东北格陵兰州海底栖息地的兆曼特山脉基线，揭示了北极和大西洋生物群的推定联系。

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