气候变化领域集成服务门户(CCPortal): Macro-epibenthic communities, bathymetry and enviromental information at the tip of the Antarctic Peninsula

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.847998
	Macro-epibenthic communities, bathymetry and enviromental information at the tip of the Antarctic Peninsula
	Gutt; Julian; Alvaro; Maria Chiara; Barco; Andrea; Böhmer; Astrid; Bracher; Astrid; David; Bruno; De Ridder; Chantal; Dorschel; Boris; Eléaume; Marc; Janussen; Dorte; Kersken; Daniel; López-Gonzáles; Pablo José; Martínez-Baraldés; Irene; Schröder; Michael; Segelken-Voigt; Alexandra; Teixidó; Núria
发布日期	2016-04-27
数据集类型	dataset
英文简介	The Southern Ocean ecosystem at the Antarctic Peninsula has steep natural environmental gradients, e.g. in terms of water masses and ice cover, and experiences regional above global average climate change. An ecological macroepibenthic survey was conducted in three ecoregions in the north-western Weddell Sea, on the continental shelf of the Antarctic Peninsula in the Bransfield Strait and on the shelf of the South Shetland Islands in the Drake Passage, defined by their environmental envelop. The aim was to improve the so far poor knowledge of the structure of this component of the Southern Ocean ecosystem and its ecological driving forces. It can also provide a baseline to assess the impact of ongoing climate change to the benthic diversity, functioning and ecosystem services. Different intermediate-scaled topographic features such as canyon systems including the corresponding topographically defined habitats 'bank', 'upper slope', 'slope' and 'canyon/deep' were sampled. In addition, the physical and biological environmental factors such as sea-ice cover, chlorophyll-a concentration, small-scale bottom topography and water masses were analysed. Catches by Agassiz trawl showed high among-station variability in biomass of 96 higher systematic groups including ecological key taxa. Large-scale patterns separating the three ecoregions from each other could be correlated with the two environmental factors, sea-ice and depth. Attribution to habitats only poorly explained benthic composition, and small-scale bottom topography did not explain such patterns at all. The large-scale factors, sea-ice and depth, might have caused large-scale differences in pelagic benthic coupling, whilst small-scale variability, also affecting larger scales, seemed to be predominantly driven by unknown physical drivers or biological interactions.
空间范围	Median Latitude: -62.850810 * Median Longitude: -58.003617 * South-bound Latitude: -64.004500 * West-bound Longitude: -61.202514 * North-bound Latitude: -61.930212 * East-bound Longitude: -54.107000
时间范围	2013-01-20T00:00:00 - 2013-03-18T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215448
推荐引用方式 GB/T 7714	Gutt,Julian,Alvaro,et al. Macro-epibenthic communities, bathymetry and enviromental information at the tip of the Antarctic Peninsula.2016-04-27.https://doi.org/10.1594/PANGAEA.847998.