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Crenarchaea and phytoplankton coupling in sedimentary archives: Common trigger or metabolic dependence?

Fietz, Susanne; Martínez-Garcia, Alfredo; Rueda, Gemma; Peck, Victoria L.; Huguet, Carme; Escala, Marina; Rosell-Melé, Antoni. 2011 Crenarchaea and phytoplankton coupling in sedimentary archives: Common trigger or metabolic dependence? Limnology and Oceanography, 56 (5). 1907-1916. 10.4319/lo.2011.56.5.1907

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Abstract/Summary

The concentrations of chlorins (chlorophyll transformation products indicative of phytoplankton production) and crenarchaeol (a marker for Crenarchaea abundance) are significantly positively correlated (Spearman's rank correlation coefficient r(s) > 0.75) in four core records from freshwater (Lake Baikal) and marine settings (Southern, Atlantic, and Arctic Oceans). This suggests a close relationship between Crenarchaea abundance and phytoplankton production. Degradation and transport mechanisms, as well as a common environmental trigger, may in part account for our observations, but these mechanisms alone cannot fully explain them. Instead our findings point to a metabolic dependence of Crenarchaea on resources released by phytoplankton, such as organic carbon or ammonium.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.4319/lo.2011.56.5.1907
Programmes: BAS Programmes > Polar Science for Planet Earth (2009 - ) > Chemistry and Past Climate
ISSN: 0024-3590
NORA Subject Terms: Marine Sciences
Biology and Microbiology
Date made live: 12 Oct 2011 15:48
URI: http://nora.nerc.ac.uk/id/eprint/15293

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