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| Titel |
Protein biomass quantification of unbroken individual foraminifers using nano-spectrophotometry |
| VerfasserIn |
A. Movellan, R. Schiebel, M. V. Zubkov, A. Smyth, H. Howa |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 9, no. 9 ; Nr. 9, no. 9 (2012-09-12), S.3613-3623 |
| Datensatznummer |
250007291
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| Publikation (Nr.) |
 copernicus.org/bg-9-3613-2012.pdf |
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| Zusammenfassung |
| The ecological role of foraminifers has been largely unknown partly owing to
difficulties in determining their individual biomass, although foraminifers
are abundant in surface marine sediments. The present study provides a
reliable and inexpensive method for the quantification of the protein content
of hard-shelled foraminifers as a measure of biomass while preserving the
tests for later analyses (e.g. morphometry, stable isotopes), using
nano-spectrophotometry. The protein biomass, is significantly correlated with
size, and shell weight of Ammonia tepida (n = 102, p < 0.00001,
R2 = 0.462, and n = 181, p < 0.00001, R2 = 0.855). Variability in
the relation between test size and weight, and cell biomass may result from
natural variability in horizontal and vertical microenvironments encompassing
metabolic state, as well as variability in test morphometry and calcite mass
(i.e. test weight). In turn, knowing the size- and species-specific biomass
of foraminifers adds valuable information on the trophic and ecologic
conditions of modern and ancient marine environments, in particular on the
reconstruction of the regional palaeoproductivity and flux of organic matter. |
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