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DIVISION S-10—NOTES

A NEW IDEA IN MARSH CORING

THE WEDGE

^a Dep. of Soil and Water Science, University of Florida, Gainesville, FL 32611-0510
^b Géochimie des Eeaux, University of Paris 7, 75721 Paris, France
^c Dep. of Geological Sciences, University of Cape Town, Rondebosch, Cape Town, 7700, South Africa
^d Faculty of Earth Sciences, Utrecht University, 3508 TA Utrecht, The Netherlands

^* Corresponding author (pwi{at}mail.ifas.ufl.edu).

Standard coring techniques are often ineffective in the unconsolidated and vegetated soils and sediments of marsh environments. In this paper, a novel coring device is presented that minimizes the problems of compaction, core plugging, and root disturbance to allow the collection of intact 35+ cm cores from densely vegetated marsh areas. The simple concept uses a sharpened main body and cover plate that are inserted sequentially to obtain a wedge-shaped soil or sediment slice. In a typical application, the corer is transferred to the field laboratory where sectioning can occur. Removal of the cover plate exposes a large surface area of soil or sediment for visual inspection and sampling. The advantages of the wedge corer design are described in relation to its use in a Spartina alterniflora salt marsh.