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The use of stable carbon isotopes as tracers of ecosystem functioning in contrasting wetland ecosystems of Lake Victoria, Kenya Gichuki, J.; Triest, L.; Dehairs, F. (2001). The use of stable carbon isotopes as tracers of ecosystem functioning in contrasting wetland ecosystems of Lake Victoria, Kenya. Hydrobiologia 458(1-3): 91-97. dx.doi.org/10.1023/A:1013188229590 In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 99879 [ download pdf ]

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Trefwoorden

Analysis > Sediment analysis Chemical elements > Nonmetals > Carbon Ecosystems Flora > Aquatic organisms > Aquatic plants Isotopes Isotopes > Carbon isotopes Isotopes > Carbon isotopes > Carbon 13 Sediments Water bodies > Inland waters > Lakes Water bodies > Inland waters > Rivers Water bodies > Inland waters > Wetlands Cyperus papyrus; Eichhornia crassipes (Mart.) Solms [WoRMS] Africa, Victoria L. [Marine Regions]; Kenia [Marine Regions]; Kenya, Victoria L. [Marine Regions]; Tanzania, Victoria L. [Marine Regions]; Uganda, Victoria L. [Marine Regions] Zoet water

Author keywords

stable carbon isotopes; tracers; ecosystem functioning; Lake Victoria

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Auteurs		Top
Gichuki, J. Triest, L. Dehairs, F.

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Abstract

Aquatic macrophytes and sediments from two contrasting wetland ecosystems of Lake Victoria, Kenya (Lower Sondu Miriu and Kibos systems) were analyzed for their stable carbon isotopic composition in order to observe patterns in system functioning in these two ecosystems. The aquatic macrophytes had carbon isotope ratios ranging from –8.92 to –29.18 per mil (parts per thousand difference from the reference). For the dominant macrophytes, we observed most 13C enriched values for Cyperus papyrus and most 13C depleted values for Eichhornia crassipes. On transects from the river to the lake, Kibos sediments maintained lower carbon isotope signatures compared to the Lower Sondu Miriu sediments. The possible causes of the observed variation in the 13C signatures from sediments and aquatic macrophytes in the two-wetland ecosystems are outlined.

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