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Ethological analysis of the trace fossil Zoophycos: hints from the Arctic Ocean
Ansvarlig organisasjon
2012 (engelsk)Inngår i: Lethaia: an international journal of palaeontology and stratigraphy, ISSN 0024-1164, E-ISSN 1502-3931, Vol. 45, nr 2, s. 290-298Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The distribution of the trace fossil Zoophycos in Quaternary marine sediments from the Arctic Ocean was studied in twelve piston and gravity cores retrieved during the Swedish icebreaker expeditions YMER80, Arctic Ocean- 96 and LOMROG I & II. The sampled cores span an area from the Makarov Basin to the Fram Strait. Zoophycos was only found in two cores taken at more than 2 km water depth on the slope of the Lomonosov Ridge, but was absent in cores obtained at shallower depth, confirming earlier observations of the trace maker's bathymetric preferences. The two cores containing Zoophycos are characterized by quiet sedimentation and slightly enhanced food flux compared with the general Arctic. The occurrence of Zoophycos in these cores in a setting that is characterized by extreme seasonal variations in food flux due to the total ice coverage during winters and high primary productivity during the long summer days, is interpreted to be a cache- behaviour response to pulsed flux of food to the benthic realm.

sted, utgiver, år, opplag, sider
Stockholm Univ, Dept Geol Sci, S-10691 Stockholm, Sweden., 2012. Vol. 45, nr 2, s. 290-298
Emneord [en]
Arctic Ocean, ethology, Quaternary, spreiten, trace fossils, Zoophycos
HSV kategori
Forskningsprogram
SWEDARCTIC 1996, Arctic Ocean 1996; SWEDARCTIC 2007, LOMROG; SWEDARCTIC 2009, LOMROG II
Identifikatorer
URN: urn:nbn:se:polar:diva-2355DOI: 10.1111/j.1502-3931.2011.00282.xISI: 000301429500013OAI: oai:DiVA.org:polar-2355DiVA, id: diva2:858738
Tilgjengelig fra: 2015-10-05 Laget: 2015-10-05 Sist oppdatert: 2017-12-01

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