Potential biological sources of long chain alkyl diols in a lacustrine system
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Publication date
2014-03-01
Authors
Villanueva, Laura
Besseling, Marc
Rodrigo-Gámiz, Marta
Rampen, Sebastiaan W.
Verschuren, Dirk
Sinninghe Damste, Jaap S.
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Document Type
Article
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Abstract
Long chain alkyl diols (LCDs) have been detected in a range of marine and lacustrine environments, as well as in several algal cultures. However, the identity of the producers, their preferred ecological niche and seasonality are uncertain. We applied a gene-based approach to determine the identity and abundance of Eustigmatophyceae 18S rRNA genes and compared the data with the distribution of LCDs in the water column of Lake Challa (East Africa). Gene-based analysis revealed three known and two novel Eustigmatophyceae groups. Maxima in the number of gene copies and LCD concentration coincided at 9. m water depth, signifying Eustigmatophyceae as important producers of LCDs. In addition, seasonal changes in LCD abundance in sedimenting particles revealed several blooms of LCD producers over the annual cycle.
Keywords
Geochemistry and Petrology, SDG 14 - Life Below Water
Citation
Villanueva, L, Besseling, M, Rodrigo-Gámiz, M, Rampen, S W, Verschuren, D & Sinninghe Damsté, J S 2014, 'Potential biological sources of long chain alkyl diols in a lacustrine system', Organic Geochemistry, vol. 68, pp. 27-30. https://doi.org/10.1016/j.orggeochem.2014.01.001