An n-alkane proxy for the sedimentary input of submerged/floating freshwater aquatic macrophytes

Lipid analysis of aquatic plants from lakes on Mt. Kenya, E. Africa, revealed that non-emergent (submerged and floating-leaved) species displayed enhanced abundances of mid-chain length, C 23 and C 25 n-alkanes. In contrast, the emergent aquatic plants had n-alkane distributions similar to those of...

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Bibliographic Details
Published in:Organic geochemistry 2000-07, Vol.31 (7), p.745-749
Main Authors: Ficken, K.J, Li, B, Swain, D.L, Eglinton, G
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Aquatic macrophytes
Biological and medical sciences
Earth sciences
Earth, ocean, space
Exact sciences and technology
Fresh water ecosystems
Freshwater
Fundamental and applied biological sciences. Psychology
Isotope geochemistry
Isotope geochemistry. Geochronology
Kenya, Kenya Mt
Lakes
Lipids
Marine and continental quaternary
n-Alkanes
Plantae
Surficial geology
Synecology
δ 13C
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Summary:Lipid analysis of aquatic plants from lakes on Mt. Kenya, E. Africa, revealed that non-emergent (submerged and floating-leaved) species displayed enhanced abundances of mid-chain length, C 23 and C 25 n-alkanes. In contrast, the emergent aquatic plants had n-alkane distributions similar to those of the terrestrial vegetation, typically dominated by the long-chain length homologues (>C 29). A proxy ratio, P aq, has been formulated to reflect the non-emergent aquatic macrophyte input to lake sediments relative to that from the emergent aquatic and terrestrial plants.
ISSN:0146-6380
1873-5290
DOI:10.1016/S0146-6380(00)00081-4