NDLI: Soil salinity and moisture gradients and plant zonation in Mediterranean salt marshes of Southeast Spain

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Soil salinity and moisture gradients and plant zonation in Mediterranean salt marshes of Southeast Spain

Content Provider	Springer Nature Link
Author	Rogel, José Alvarez Ariza, Francisco Alcaraz Silla, Roque Ortiz
Copyright Year	2000
Abstract	For two years, we measured soil moisture, pH, salinity, and ion concentrations bimonthly from 55 vegetation plots in six Mediterranean salt marshes of SE Spain. Edaphic characteristics during dry and wet seasons were compared within six selected plant communities. The dominant species in each of these communities were Suaeda vera, Lygeum spartum, Limonium sp, Sarcocornia fruticosa, Halocnemum strobilaceum, and Arthrocnemum macrostachyum. Although soil salt concentrations were lower during the wet season, different patterns of temporal variation in total dissolved salts, sodium adsorption ratio, Cl$^{−}$, Na$^{+}$, K$^{+}$, Ca$^{2+}$, and Mg$^{2+}$ were observed in the soils occupied by different plant communities. The variation patterns for SO 4 2− were the same in all plant communities. The Ca$^{2+}$/Mg$^{2+}$, Ca$^{2+}$/Na$^{+}$, and SO 4 2− /Cl$^{−}$ ratios increased during the wet season because of the more pronounced decrease in Cl$^{−}$, Na$^{+}$, and Mg$^{2+}$ concentrations relative to Ca$^{2+}$, and SO 4 2− . Canonical correspondence analysis (CCA) related the species distribution with certain soil conditions. The edaphic variables that best explained the data were maximum soil moisture, mean K$^{+}$/Na$^{+}$ ratio, mean Ca$^{2+}$/Mg$^{2+}$ ratio, maximum pH, and maximum K$^{+}$. Two different environments were identified: dry salt marsh and wet salt marsh. to examine soil ionic gradients in these two environments, two further CCA were applied. The variables that best explained soil-vegetation relationships in the dry salt marsh were mean K$^{+}$/Na$^{+}$ ratio, mean Ca$^{2+}$/Mg$^{2+}$ ratio, maximum K$^{+}$, and minimum Ca$^{2+}$/Na$^{+}$ ratio. Some representative dry salt marsh species were Lygeum spartum, Atriplex glauca, Suaeda vera, and Frankenia corymbosa. The variables explaining the data set in the wet salt marsh were maximum sodium adsorption ratio, maximum Mg$^{2+}$ content, mean Ca$^{2+}$ content, and mean Ca$^{2+}$/Mg$^{2+}$ ratio. Species such as Arthrocnemum macrostachyum, Sarcocornia fruticosa, Juncus maritimus, and Tamarix boveana were representative of this environment.
Starting Page	357
Ending Page	372
Page Count	16
File Format	PDF
ISSN	02775212
Journal	Wetlands
Volume Number	20
Issue Number	2
e-ISSN	19436246
Language	English
Publisher	Springer Netherlands
Publisher Date	2000-01-01
Publisher Institution	Society of Wetland Scientists
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ionic balance soil-plant relationships canonical correspondence analysis Halocnemum strobilaceum Freshwater & Marine Ecology Environmental Management Ecology Hydrogeology Coastal Sciences Landscape Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Environmental Chemistry

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