The University of Southampton
University of Southampton Institutional Repository

Hydroxylated isoprenoidal GDGTs in the Nordic Seas

Hydroxylated isoprenoidal GDGTs in the Nordic Seas
Hydroxylated isoprenoidal GDGTs in the Nordic Seas
Archaea modify their membrane lipid composition to maintain integrity and exchange capabilities across a wide temperature range. The number of rings in the tetraether structure increases with higher ambient temperatures. Recently, novel glycerol dialkyl glycerol tetraethers (GDGTs) with an additional hydroxyl group on the alkyl chain were described (OH-GDGTs). Here we show that at a regional scale in the Nordic Seas (western Barents, Norwegian, Greenland, and Iceland Seas), the OH-GDGTs' contribution to the total archaeal GDGT pool as well as the ratio of specific OH-GDGTs versus crenarchaeol are higher in colder waters, especially in polar water masses. We also observe a shift in the number of rings of the OH-GDGTs with temperature. Thus, both the contribution of the OH-GDGTs to the total isoprenoidal GDGT pool and the number of rings in OH-GDGTs could be used as potential indicators of polar waters and might complement the currently used paleo sea surface temperature proxies in polar regions.
Arctic, Biomarkers, Crenarchaeota, Fram Strait, Isoprenoidal GDGT, OH-GDGT, Polar waters, TEX86, Sea surface temperature, Thaumarchaeota
0304-4203
1-10
Fietz, Susanne
2b1d9eec-bcb9-46a3-bcc5-7e64f2b882a8
Huguet, Carme
c3612ad8-576c-44bc-a942-d451b6cfd670
Rueda, Gemma
72317a5c-857f-4600-9319-90664dae2d20
Hambach, Bastian
d144b919-bc71-4793-89ee-7fdfdb7762bb
Rosell-Melé, Antoni
55d4a108-fcbe-4aad-80b5-66e30e047253
Fietz, Susanne
2b1d9eec-bcb9-46a3-bcc5-7e64f2b882a8
Huguet, Carme
c3612ad8-576c-44bc-a942-d451b6cfd670
Rueda, Gemma
72317a5c-857f-4600-9319-90664dae2d20
Hambach, Bastian
d144b919-bc71-4793-89ee-7fdfdb7762bb
Rosell-Melé, Antoni
55d4a108-fcbe-4aad-80b5-66e30e047253

Fietz, Susanne, Huguet, Carme, Rueda, Gemma, Hambach, Bastian and Rosell-Melé, Antoni (2013) Hydroxylated isoprenoidal GDGTs in the Nordic Seas. Marine Chemistry, 152, 1-10. (doi:10.1016/j.marchem.2013.02.007).

Record type: Article

Abstract

Archaea modify their membrane lipid composition to maintain integrity and exchange capabilities across a wide temperature range. The number of rings in the tetraether structure increases with higher ambient temperatures. Recently, novel glycerol dialkyl glycerol tetraethers (GDGTs) with an additional hydroxyl group on the alkyl chain were described (OH-GDGTs). Here we show that at a regional scale in the Nordic Seas (western Barents, Norwegian, Greenland, and Iceland Seas), the OH-GDGTs' contribution to the total archaeal GDGT pool as well as the ratio of specific OH-GDGTs versus crenarchaeol are higher in colder waters, especially in polar water masses. We also observe a shift in the number of rings of the OH-GDGTs with temperature. Thus, both the contribution of the OH-GDGTs to the total isoprenoidal GDGT pool and the number of rings in OH-GDGTs could be used as potential indicators of polar waters and might complement the currently used paleo sea surface temperature proxies in polar regions.

Full text not available from this repository.

More information

Published date: 20 May 2013
Keywords: Arctic, Biomarkers, Crenarchaeota, Fram Strait, Isoprenoidal GDGT, OH-GDGT, Polar waters, TEX86, Sea surface temperature, Thaumarchaeota
Organisations: Paleooceanography & Palaeoclimate

Identifiers

Local EPrints ID: 373722
URI: https://eprints.soton.ac.uk/id/eprint/373722
ISSN: 0304-4203
PURE UUID: 92371476-5796-4500-95c3-d57534ec0d27

Catalogue record

Date deposited: 04 Feb 2015 11:18
Last modified: 17 Jul 2017 21:32

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×