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Bedload and nearbed detritus transport in a tidal saltmarsh creek

Hemminga, M.A. and Cattrijsse, A. and Wielemaker, A. (1996) Bedload and nearbed detritus transport in a tidal saltmarsh creek. Estuarine Coastal and Shelf Science, 42, 55-62. ISSN 0272-7714.

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Bedload and nearbed transport of coarse (>1 mm) detritus particles were investigated in a tidal creek of a salt marsh in the Westerschelde estuary (south-west Netherlands). Using a fyke net positioned on the creek bottom, hourly transport through the creek was measured during 14 flood-ebb cycles in 1990 and 1991. Transport was bidirectional with flood imports varying between 32 and 2601 g dry weight (DW), and ebb exports varying between 0 and 4737 g DW. In nine of 14 tidal cycles, the creek was functioning as a net exporting system. The material that was exported with the ebb consisted mainly of macrophyte material. The annual loss of coarse organic matter by bedload plus nearbed transport through the creek was estimated to be less than 0.2% of the estimated annual above- ground plant biomass production in the drainage area of the creek. Therefore, it is concluded that this type of detritus transport is probably insignificant for the carbon balance of the salt marsh. [KEYWORDS: salt marsh; detritus transport; carbon budget; bedload transport; Westerschelde estuary Particulate organic-matter; salt-marsh; netherlands; inundation]

Item Type:Article
ID Code:10400
Deposited On:25 Nov 2011 01:00
Last Modified:24 Apr 2012 16:39

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