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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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Pneumatophore height and density in relation to microtopography in the grey mangrove Avicennia marina Dahdouh-Guebas, F.; Kairo, J.G.; De Bondt, R.; Koedam, N. (2007). Pneumatophore height and density in relation to microtopography in the grey mangrove Avicennia marina. Belg. J. Bot. 140(2): 213-221 In: Belgian Journal of Botany. Royal Botanical Society of Belgium: Brussels. ISSN 0778-4031; e-ISSN 1781-8656, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 135066 [ download pdf ]

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Trefwoorden

Mangroves Topography Avicennia marina (Forssk.) Vierh. [WoRMS] ISW, Kenia, Gazi Bay [Marine Regions] Marien/Kust

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Auteurs		Top
Dahdouh-Guebas, F., meer Kairo, J.G., meer De Bondt, R., meer Koedam, N., meer

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Abstract

Mangroves are known to stabilise coastal sediments through their above-ground aerial root complex. The results presented in this paper suggest that the grey mangrove Avicennia marina has the ability to adapt its pneumatophores to micro-topographical irregularities in the otherwise regularly sloping intertidal zone. The difference in height above datum (and thus in hydrological regime) in this study was as little as 15 cm higher as opposed to that for the surrounding mangrove soil. Significantly higher pneumatophore densities and total pneumatophore lengths were observed in the centre of the landward depression, and significantly lower below ground pneumatophore length in the centre of the seaward depression. The mangrove’s adaptations to these localised topographic differences are important in view of changes in intertidal hydrology, the latter being linked to changes in topography. We emphasize the need to consider the effect of topography in the intertidal environment of mangroves more closely in the future on different ecological scales (individual adaptation - regeneration of the entire population) and under different scenarios of change (direct anthropogenic impact - changes in sea level).

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