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Publication Type J
Authors Alvarez-Rogel, J., J. J. Martinez-Sanchez, L. C. Blazquez and C. M. M. Semitiel
Title A conceptual model of salt marsh plant distribution in coastal dunes of southeastern Spain
Source Wetlands
Author Keywords soil-plant relationships; sandy soils; gradient analysis; wetland hydrology; wetland indicators; redoximorphic features juncus-roemerianus; electrical-conductivity; western france; soil-salinity; vegetation; zonation; competition; communities; halophytes; patterns
Abstract The main objectives of this study were to identify a small of edaphic factors that could be related to vegetation distribution in a coastal dune salt marsh system in the Southeast of Spain and to establish a simple conceptual model to describe the relationships between these soil factors and the main plant communities. Soil and vegetation data were obtained from 87 sampling plots. The plant communities studied were dominated by Crucianella maritima, Teucrium dunense, Ammophila arenaria, Lygeum spartum, Schoenus nigricans, Juncus maritimus, Limonium cossonianum, Sarcocornia fruticosa, Arthrocnemum macrostachyum, and co-dominance of Sarcocornia fruticosa and Arthrocnemum macrostachyum. The first four communities occupied summit positions and the rest of communities interdune depressions. In addition, we sampled plots in bare soil at interdune depressions. The soil parameters studied were soil salinity, soil moisture, the ground-water level, the depth to gleyed matrix, and the distance to the shoreline. Soils at interdune depressions were consistently more saline, wetter, and with a shallower water table and gleyed matrix than soils at summit positions. Soil moisture, salinity, and the distance to the shoreline were parameters related to plant distribution at summit positions. However, at interdume depressions species distribution was mainly related to salinity, moisture, the depth of the ground water, and the depth to gleyed matrix. In the conceptual model proposed, bare soils are characterized by their extreme salinity in the growing season (spring) and a shallower ground-water level, which leads to a shallower gleyed matrix.
Author Address Univ Politecn Cartagena, ETS Ingn Agron, Area Edafol & Quim Agricola, Dept Ciencia & Tecnol Agraria, Murcia 30203, Spain. Univ Politecn Cartagena, ETS Ingn Agron, Dept Prod Vegetal, Murcia 30203, Spain. CSIC, CEBAS, Dept Conservac Suelos & Aguas & Manejo Residuos O, Murcia 30080, Spain. Alvarez-Rogel, J, Univ Politecn Cartagena, ETS Ingn Agron, Area Edafol & Quim Agricola, Dept Ciencia & Tecnol Agraria, Paseo Alfonso XIII,52 Cartagena, Murcia 30203, Spain. jose.alvarez@upct.es
29-Character Source Abbreviation Wetlands
Publication Date Sep
Year Published 2006
Volume 26
Issue 3
Beginning Page 703-717
Unique Article Identifier ISI:000241150000006
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