(Article of periodic en Anglais - 2013)

Document title

Freshwater diversions as an ecosystem management tool for maintaining soil organic matter accretion in coastal marshes

Authors(s) and Affiliation(s)

DELAUNE R.D. (1) ; KONGCHUM M. (2) ; WHITE J.R. (1) ; JUGSUJINDA A. (1) ;
(1) Dep. of Oceanography and Coastal Sciences, School of the Coast and Environment, Louisiana State Univ., Baton Rouge, ETATS-UNIS
(2) School of Plant, Environmental, and Soil Sciences, Louisiana State Univ., Baton Rouge, ETATS-UNIS


Marsh soil accretion processes were examined at 12 locations in fresh and brackish marshes in Louisiana's northern Barataria Basin estuary. Sedimentation rates were determined by 137 Cs. Soil structure and accretion were controlled primarily by organic matter accumulation rather than mineral sediment deposition with water and entrapped gases occupying the majority of the soil volume. Such organic-based fresh and brackish marsh soil are more fragile than mineral based marsh soils and are subject to impact by salt water intrusion and hurricane storm surge forces. The Davis Pond diversion is a conduit between the Mississippi River and the coastal marshes of Barataria basin currently reintroducing river water into the basin leading to lower basin salinities. This hydrologic management measure should benefit and extend the stability of the studied marsh sites encouraging continued vegetation growth and soil organic matter accumulation


Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 107 [pp. 139-144]

Bibliographic references : 31 ref.

Collation : 2 fig., 1 tabl.



INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.02.012

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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