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How do soil processes control the provision of ecosystem services in coastal wetlands?

Texto completo
Autor(es):
Ferreira, Tiago O. ; Queiroz, Hermano M. ; Ruiz, Francisco ; Nobrega, Gabriel N. ; Cherubin, Mauricio R. ; de Souza Junior, Valdomiro S. ; Barcellos, Diego ; Ferreira, Amanda D. ; Otero, Xose L.
Número total de Autores: 9
Tipo de documento: Artigo Científico
Fonte: Environmental Research; v. 255, p. 13-pg., 2024-05-18.
Resumo

Coastal wetlands are known for their diverse ecosystems, yet their soil characteristics are often misunderstood and thought to be monotonous. These soils are frequently subjected to saline water saturation, leading to unique soil processes. However, the combination and intensity of these processes can vary considerably across different ecosystems. In this study, we hypothesize that these diverse soil processes not only govern the geochemical conditions in coastal ecosystems but also influence their ability to deliver ecosystem services. To test this hypothesis, we conducted soil analyses in mangroves, seagrass meadows, and hypersaline tidal flats along the Brazilian coast. We used key soil properties as indicators of soil processes and developed a conceptual model linking soil processes and soil-related ecosystem services in these environments. Under more anoxic conditions, the intense soil organic matter accumulation and sulfidization processes in mangroves evidence their significance in terms of climate regulation through organic carbon sequestration and contaminants immobilization. Similarly, pronounced sulfidization in seagrasses underscores their ability to immobilize contaminants. In contrast, hypersaline tidal flats soils exhibit increased intensities of salinization and calcification processes, leading to a high capacity for accumulating inorganic carbon as secondary carbonates (CaCO3), underscoring their role in climate regulation through inorganic carbon sequestration. Our findings show that contrary to previously thought coastal wetlands are far from monotonous, exhibiting significant variations in the types and intensities of soil processes, which in turn influence their capacity to deliver ecosystem services. This understanding is pivotal for guiding effective management strategies to enhance ecosystem services in coastal wetlands. (AU)

Processo FAPESP: 21/00221-3 - De drenos a emissores: vulnerabilidade de solos de mangue como sumidouros de carbono frente as mudanças climáticas globais
Beneficiário:Hermano Melo Queiroz
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 19/14800-5 - Plantas estuarinas e seu controle na biogeoquímica de metais em solos impactados pelo `desastre de Mariana´
Beneficiário:Amanda Duim Ferreira
Modalidade de apoio: Bolsas no Brasil - Doutorado
Processo FAPESP: 19/02855-0 - Flutuações redox, dinâmica de ferro e metais em solos do estuário do Rio Doce após o "desastre de Mariana (MG)": uma abordagem experimental
Beneficiário:Diego Barcellos
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 23/06841-9 - Impacto de um Evento Climático Extremo nas Interações Organo-Minerais Mediadas por Ferro em Solos de Manguezais
Beneficiário:Francisco Ruiz
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 19/19987-6 - Solos e plantas do estuário do Rio Doce e seu controle sobre a biogeoquímica de ferro e metais em resposta ao desastre de Mariana (MG)
Beneficiário:Tiago Osório Ferreira
Modalidade de apoio: Auxílio à Pesquisa - Regular