La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Patterns of mangrove forest structure and soil nutrient dynamics along the Shark River estuary, Florida
Auteurs :	R. H. Chen, Auteur ; R. R. Twilley, Auteur
Type de document :	Article
Dans :	Estuaries (22(4) DEC 1999)
Article en page(s) :	955-970
Résumé :	The basal area and productivity of mangrove wetlands are described in relation to selected soil properties to understand the general pattern of optimum forest stature at the mouth of estuaries in the Everglades, such as the Shark River Slough, Florida (U.S.). The basal area of mangroves decreases from 40.4 m(2) ha(-1) and 39.7 m(2) ha(-1) at two stations 1.8 km and 4.1 km from the estuary mouth to 20.7 m(2) ha(-1) and 19.6 m(2) ha(-1) at two sites 9.9 km and 18.2 km from the mouth, respectively The gradient,in basal area at these four sites is mostly the result of approximately 34 yr of growth since Hurricane Donna. Wood productivity is higher in the lower estuary (10.7 Mg ha(-1) yr(-1) and 12.0 Mg ha(-1) yr(-1))than in the upper estuary (3.2 Mg ha(-1) yr(-1) and 4.2 Mg ha(-1) yr(-1)). Porewater salinity among these four mangrove sites during seasonal sampling in 1994 and 1995 ranged from 1.6 g kg(-1) to 33.5 g kg(-1), while sulfide was generally

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