Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
A quantitative study on the degradation of whale bone lipids: implications for the preservation of fatty acids in marine sediments
Swedish Museum of Natural History, Department of Paleobiology.
Show others and affiliations
2015 (English)In: Organic Geochemistry, ISSN 0146-6380, E-ISSN 1873-5290, Vol. 89-90, 23-30 p.Article in journal (Refereed) Published
Abstract [en]

The degradation and preservation affecting the biomarker record of ancient metazoa are not fully 33understood. We report on a five month experiment on the fate of fatty acids (FAs) during the degradation 34of recent whale vertebrae (Phocoena phocoena). Whale bones were analysed for extractable FAs and 35macromolecularly bound n-acyl compounds. Fresh bone showed extractable FAs dominated by 3616:1x7c, 16:0, 18:1x9c and 18:0. Calculated degradation rate constant (k) values showed a rapid 37decrease in FA concentration, with k values higher for unsaturated than for saturated compounds 38(e.g. 0.08/day for 18:1x9c, 0.05/day for 16:0). The appearance or increased abundance of distinctive 39methyl branched (e.g. i/ai-15:0 and -17:0, 10Me-16:0) and hydroxy FAs (e.g. 10OH-16:0 and 10OH- 4018:0) were observed, providing clear evidence for the microbial degradation of bone organic matter 41and an input of lipids from specialised bacteria. Catalytic hydropyrolysis (HyPy) of demineralised extrac- 42tion residues released up to 0.13% of the total n-C16 and n-C18 moieties in the degraded bones. This 43revealed that only a small, yet sizeable portion of bone-derived fatty acyl units was sequestered into 44(proto)kerogen during the earliest stages of degradation.

Place, publisher, year, edition, pages
2015. Vol. 89-90, 23-30 p.
National Category
Geochemistry
Research subject
Ecosystems and species history
Identifiers
URN: urn:nbn:se:nrm:diva-1437DOI: 10.1016/j.orggeochem.2015.09.005OAI: oai:DiVA.org:nrm-1437DiVA: diva2:875460
Available from: 2015-12-01 Created: 2015-12-01 Last updated: 2015-12-02Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Department of Paleobiology
In the same journal
Organic Geochemistry
Geochemistry

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 35 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf