干旱区生态环境知识资源中心(Arid): Cold-seep fossil macrofaunal assemblages from Vestnesa Ridge, eastern Fram Strait, during the past 45 000 years

Arid

DOI	10.33265/polar.v38.3310
	Cold-seep fossil macrofaunal assemblages from Vestnesa Ridge, eastern Fram Strait, during the past 45 000 years
	Thomsen, Elsebeth 1; Rasmussen, Tine Lander 2; Sztybor, Kamila 3; Hanken, Nils-Martin 4,5; Tendal, Ole Secher 6; Uchman, Alfred 7
通讯作者	Thomsen, Elsebeth
来源期刊	POLAR RESEARCH
ISSN	0800-0395
EISSN	1751-8369
出版年	2019
卷号	38
英文摘要	Four cores from 1200 m water depth from Vestnesa Ridge on the western Svalbard margin in the eastern Fram Strait were studied for their content of fossil macrofaunas. Three of the cores were collected from a pockmark with active methane seepage, and one core (control core) was taken just outside the seepage area for comparison. Together the cores cover the last 45000 years (mid-late Weichselian glacial, the deglaciation and the Holocene). The records show a range of influence of methane from no seepage (control core) and, although variable through time, from moderate seepage, to strong and very strong seepage. All cores have been analysed for the macrofossils >1 mm, trace fossils, planktic foraminifera, stable isotopes, geochemistry and sedimentology. The main purpose of the study is to improve our knowledge of the fossil macrofauna and past environmental changes related to the impact of methane emissions in the area. The core recovered outside the pockmark contained no fossil macrofaunas, while cores from inside the pockmark contained chemosymbiotic bivalves, and in some cases a rich macrofauna. The faunal relationships with the sedimentary environments confirm a close connection between the macrofauna and the variability in influence of cold seepage, particularly seen in the occurrence of chemosymbiotic bivalves Archivesica arctica, Isorropodon nyeggaensis, potentially chemosymbiotic bivalve Rhacothyas kolgae, polychaetes and an associated rich fauna of small epifaunal gastropods, showing that Arctic seeps were oases for macrofaunas in the past as they are today.
英文关键词	Methane release macrofossils trace fossils foraminifera mid-late Weichselian glacial to Holocene Svalbard margin
类型	Article
语种	英语
国家	Norway ; Denmark ; Poland
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000494429000001
WOS关键词	WEST SPITSBERGEN CURRENT ; SULFIDE-RICH SEDIMENTS ; METHANE SEEPS ; MEGAFAUNAL ASSEMBLAGES ; SPATIAL HETEROGENEITY ; BENTHIC FORAMINIFERA ; VESICOMYID BIVALVES ; ANAEROBIC OXIDATION ; SPECIES COMPOSITION ; HYDRATE RIDGE
WOS类目	Ecology ; Geosciences, Multidisciplinary ; Oceanography
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Oceanography
EI主题词	2019-10-22
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310333
作者单位	1.UiT Arctic Univ Norway, Arctic Univ Museum Norway, NO-9037 Tromso, Norway; 2.UiT Arctic Univ Norway, Dept Geosci, Ctr Arctic Gas Hydrate Environm & Climate, Tromso, Norway; 3.Akvaplan Niva AS, Fram Ctr, Tromso, Norway; 4.UiT Arctic Univ Norway, Dept Geosci, Tromso, Norway; 5.Univ Oslo, Dept Geosci, Oslo, Norway; 6.Nat Hist Museum Denmark, Zool Museum, Copenhagen O, Denmark; 7.Jagiellonian Univ, Inst Geol Sci, Krakow, Poland
推荐引用方式 GB/T 7714	Thomsen, Elsebeth,Rasmussen, Tine Lander,Sztybor, Kamila,et al. Cold-seep fossil macrofaunal assemblages from Vestnesa Ridge, eastern Fram Strait, during the past 45 000 years[J],2019,38.
APA	Thomsen, Elsebeth,Rasmussen, Tine Lander,Sztybor, Kamila,Hanken, Nils-Martin,Tendal, Ole Secher,&Uchman, Alfred.(2019).Cold-seep fossil macrofaunal assemblages from Vestnesa Ridge, eastern Fram Strait, during the past 45 000 years.POLAR RESEARCH,38.
MLA	Thomsen, Elsebeth,et al."Cold-seep fossil macrofaunal assemblages from Vestnesa Ridge, eastern Fram Strait, during the past 45 000 years".POLAR RESEARCH 38(2019).