French Polar Institute Literature Database -- Query Results

	French Polar Institute Literature Database Home \| Show All \| Simple Search \| Advanced Search	Login Quick Search: Field: contains: ...
	1–1 of 1 record found matching your query (RSS):

Select All Deselect All

<< 1 >>

|

|

Details

	Record						Links
	Author	Massé G., Belt S., Crosta, X., Schmidt S., Snape, I., Thomas, D.N., Rowland S.J.
	Title	Highly branched isoprenoids as proxies for variable sea ice conditions in the Southern Ocean			Type	Journal Article
	Year	2011	Publication	ANTARCTIC SCIENCE	Abbreviated Journal	Antarct. Sci.
	Volume		Issue		Pages
	Keywords
	Abstract	Concentrations of a highly branched isoprenoid (HBI) diene determined in over 200 sediment samples from the Arctic co-vary with those of an HBI monoene (IP25) shown previously to be a sedimentary sea ice proxy for the Arctic. The same diene, but not monoene IP25, occurred in nine sea ice samples collected from various locations around Antarctica. The diene has been reported previously in Antarctic sea ice diatoms and the 13C isotopic compositions of the diene determined in two Antarctic sea ice samples were also consistent with an origin from sea ice diatoms (δ13C -5.7 to -8.5‰). In contrast, HBIs found in two Antarctic phytoplankton samples did not include the diene but comprised a number of tri- to pentaenes. In sediment samples collected near Adélie Land, East Antarctica, both the diene and the tri- to pentaenes often co-occurred. 13C isotopic compositions of the tri- to pentaenes in three sediment samples ranged from -35 to -42‰ whereas that of the diene in a sediment sample was -18‰. We propose the presence of this isotopically 13C enriched HBI diene in Antarctic sediments to be a useful proxy indicator for contributions of organic matter derived from sea ice diatoms. A ratio of the concentrations of diene/trienes might reflect the relative contributions of sea ice to phytoplanktonic inputs of organic matter to Antarctic sediments.
	Programme	1010
	Campaign
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0954-1020	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	3810
Permanent link to this record

Select All Deselect All

<< 1 >>

|

|

Details

Show Record |