How Do Plants and Climatic Conditions Control Soil Properties in Hypersaline Tidal Flats?
Source abstract
Abstract
Hypersaline tidal flats (HTF) are ecotones associated with mangrove ecosystems in arid and semiarid coasts. They are predominantly vegetated by halophytes which are related to environmental stabilization and fauna protection. Some plants thrive in HTF by modifying soil biogeochemical conditions at their rhizospheres, expanding across barren soils. Thus, we aimed to study rhizospheric and the adjacent bulk soils of the three most abundant plant species in HTF under a seasonal semiarid climate of northeastern Brazil. We analyzed both rhizospheric and bulk soils of vegetation patches in wet and dry seasons. We found that HTF soils are a heterogeneous system highly influenced by water availability and plant activity. The soils were mostly sandy textured, containing low C and N contents, and hypersaline conditions. Comparing bulk and rhizospheric soils, we concluded that plants changed their own rhizosphere by creating nutrient pools to improve survival under saline conditions. Seasonal changes also affected soil biogeochemical processes in HTF, mainly the bulk soils by changing water availability. Understanding rhizospheric changes by halophytes, their expansion over barren soils, and the amelioration of soil physicochemical conditions, are fundamental to provide support for preservation and management of coastal ecosystems, including HTF.
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Research context
OpenAlex topics: Coastal wetland ecosystem dynamics · Coastal and Marine Dynamics · Aeolian processes and effects
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Programa de Pós-graduação em Ecologia e Recursos Naturais, Departamento de Biologia, Universidade Federal do Ceará, UFC, Campus do Pici, Fortaleza, Ceará 60.440-900, Brazil
Department of Soil Science, College of Agriculture Luiz de Queiroz, University of São Paulo, ESALQ/USP, Av. Pádua Dias 11, Piracicaba SP 13418, Brazil
Graduate Program in Geoscience (Geochemistry), Department of Geochemistry, Federal Fluminense University, Outeiro de São João Batista s/n, Campus do Valonguinho, Centro, Niterói RJ 24020, Brazil
Departamento de Bioloxía, Faculdade de Ciências, Universidade da Coruña, 15008 A Coruña, Spain
CRESTUS Institute, Departamento Edafoloxía e Química Agrícola, Facultade de Bioloxía, Universidade de Santiago de Compostela, Rúa Lope G Marzoa, s/n. Campus sur, 15782 Santiago de Compostela, Spain
Funding
Conselho Nacional de Desenvolvimento Científico e Tecnológico · Coordenação de Aperfeiçoamento de Pessoal de Nível Superior · Consellería de Economía, Emprego e Industria, Xunta de Galicia · Cross-Research in Environmental Technologies of the Santiago de Compostela University (CRETUS) strategic group · Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) · Fundação de Amparo à Pesquisa do Estado de São Paulo
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