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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Mangrove species zonation and soil redox state, sulphide concentration and salinity in Gazi Bay (Kenya), a preliminary study Matthijs, S.; Tack, J.; Van Speybroeck, D.; Koedam, N. (1999). Mangrove species zonation and soil redox state, sulphide concentration and salinity in Gazi Bay (Kenya), a preliminary study. Mangroves and Salt Marshes 3(4): 243-249 In: Mangroves and Salt Marshes. Springer Science+Business Media: Amsterdam; Dordrecht; Hingham, MA. ISSN 1386-3509; e-ISSN 1572-977X, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 98976 [ download pdf ]

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Trefwoorden

Chemistry > Geochemistry Chemistry > Geochemistry > Sediment chemistry Cycles > Chemical cycles > Geochemical cycle > Biogeochemical cycle > Nutrient cycles Disciplines > Chemistry > Soil science > Soil chemistry Distribution > Ecological distribution Ecological zonation Properties > Chemical properties > Redox potential Properties > Chemical properties > Salinity Soil chemistry Soil chemistry Substrata Sulfides Sulfides Sulphides > Sulfides Vegetation Vegetation Vegetation Water bodies > Inland waters > Wetlands > Swamps > Mangrove swamps Avicennia marina (Forssk.) Vierh. [WoRMS]; Ceriops tagal (Perr.) C.B. Robinson [WoRMS]; Rhizophora mucronata Poir. [WoRMS] ISW, Kenia, Gazi Bay [Marine Regions] Marien/Kust

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Auteurs		Top
Matthijs, S. Tack, J., meer Van Speybroeck, D., meer Koedam, N., meer

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Abstract

The relationship between soil redox state, sulphide concentration, salinity and spatial patterns of mangrove species distribution was investigated in the mangrove forest of Gazi Bay (Kenya). Field measurements were conducted to examine the relationship between species distribution along a band transect of 280 m and soil redox potential (Eh) and sulphide patterns, as well as the indirectly related (through flooding regimes) soil salinity. Of the three major species Avicennia marina, Ceriops tagal and Rhizophora mucronata present along the transect, only the distribution of the latter correlated with the measured soil variables, R. mucronata being absent from the less-reduced zone with high salinity. Bruguiera gymnorhiza and Heritiera littoralis occur in minor populations, they are restricted to the saline, sulphide-poor and less-reduced substrates. From the results it is concluded that soil redox potential (Eh), sulphide concentration and salinity may contribute to structure mangroves through the distribution of dominant species, however in combination with other environmental conditions and processes of vegetation dynamics.

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