气候变化领域集成服务门户(CCPortal): What inhabits the South Sandwich Islands deep-sea? Biodiversity and biogeography of bathyal communities using predators as biological samplers

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DOI	10.1016/j.dsr.2024.104260
	What inhabits the South Sandwich Islands deep-sea? Biodiversity and biogeography of bathyal communities using predators as biological samplers
	Queiros, Jose P.; Xavier, Jose C.; Abreu, Jose; Collins, Martin A.; Belchier, Mark; Hollyman, Philip R.
发表日期	2024
ISSN	0967-0637
EISSN	1879-0119
起始页码	205
卷号	205
英文摘要	Understanding the biodiversity of an ecosystem is crucial to determine its structure and resistance to climate change. The South Sandwich Islands (SSI) are located in the Scotia Sea (Southern Ocean), within the South Georgia and the South Sandwich Islands Marine Protected Area. However, the biodiversity of the archipelago remains poorly studied, whilst climate change has the potential for wide-ranging impacts in the Antarctic and Subantarctic regions. Here we used predators as biological samplers to study the bathyal communities of SSI. A total of 61 species including fish, cephalopods and crustaceans, were identified from the diet of 13 predatory taxa (11 fish and two cephalopod). Common Subantarctic and Antarctic species were found, with Moroteuthopsis longimana being the species with the highest density (1.74 individuals per stomach at Montagu Island). Eleven fish and one cephalopod species were recorded for the first time at the archipelago. Furthermore, 16 fish species had their bathymetric range increased. Fifteen fish and one crustacean appear to have SSI as the northern or southern limit of their distribution. Community analysis found two major groups at SSI, one in the north and one in the south, with the southern group subdivided into two groups. This separation is related to the environmental conditions at the archipelago that abruptly change at Saunders Islands. Latitude (correlated with sea surface temperature) and sea surface height (proxy for upwelling) both correlated with the dissimilarity between communities. These results suggest that climate change may affect the biodiversity at SSI in the future as warming waters of the Scotia Sea and changes in the upwelling system may favour range extensions of more northerly species into the archipelago. Furthermore, it could lead to local extinctions of some species exclusively found in the southernmost areas of the archipelago.
英文关键词	Antarctica; Bioregionalization; Benthopelagic; Toothfish; Scotia sea; Southern ocean
语种	英语
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:001198288200001
来源期刊	DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/308981
作者单位	Universidade de Coimbra; UK Research & Innovation (UKRI); Natural Environment Research Council (NERC); NERC British Antarctic Survey
推荐引用方式 GB/T 7714	Queiros, Jose P.,Xavier, Jose C.,Abreu, Jose,et al. What inhabits the South Sandwich Islands deep-sea? Biodiversity and biogeography of bathyal communities using predators as biological samplers[J],2024,205.
APA	Queiros, Jose P.,Xavier, Jose C.,Abreu, Jose,Collins, Martin A.,Belchier, Mark,&Hollyman, Philip R..(2024).What inhabits the South Sandwich Islands deep-sea? Biodiversity and biogeography of bathyal communities using predators as biological samplers.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,205.
MLA	Queiros, Jose P.,et al."What inhabits the South Sandwich Islands deep-sea? Biodiversity and biogeography of bathyal communities using predators as biological samplers".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 205(2024).