Biocrust cyanobacterial composition, diversity, and environmental drivers in two contrasting climatic regions in Brazil

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUNSW Sydney-
Autor(es): dc.contributorUniversity of Western Australia-
Autor(es): dc.contributorThe University of New South Wales-
Autor(es): dc.creatorMachado de Lima, Náthali Maria [UNESP]-
Autor(es): dc.creatorMuñoz-Rojas, Miriam-
Autor(es): dc.creatorVázquez-Campos, Xabier-
Autor(es): dc.creatorBranco, Luis Henrique Zanini [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:49:14Z-
Data de disponibilização: dc.date.available2022-02-22T00:49:14Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-03-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.geoderma.2020.114914-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/207110-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/207110-
Descrição: dc.descriptionBiological soil crusts or biocrusts have critical ecological roles in dryland ecosystems including soil stabilization, erosion control and nutrient cycling. Global environmental changes are expected to impact terrestrial ecosystems, including biocrust communities. Thus, a growing number of studies have focused on investigating the diversity of biocrust-forming organisms including cyanobacteria. Despite the increasing interest in understanding biocrust cyanobacteria, there are still several knowledge gaps, particularly in areas from South America, where studies are limited. Here, we studied the composition, abundance, and environmental drivers of cyanobacterial biocrust from two important biomes in Brazil, i.e. Caatinga and Pampa, which are subject to desertification and anthropogenic pressures, respectively. Ten samples at three sites were explored at each biome (n = 60) and cyanobacterial biocrust community composition and diversity was analyzed through morphological evaluation and Next Generation Sequencing targeting the 16S rRNA gen. Soil and climatic variables, e.g. organic matter, soil texture, nitrogen and phosphorus content, temperature, and solar irradiance, were also determined at each site. Our results showed that biocrust cyanobacteria had distinct taxonomic compositions and assemblages at each biome. Similarly, cyanobacterial composition across sites within each biome differed substantially. Soil temperature and pH were identified as the main factors explaining such biotic structures. Caatinga sites, characterized by more arid environments, presented a higher abundance of N-fixing cyanobacteria, e.g. Scytonema. In contrast, Pampa, with higher rainfall regimes, showed a larger abundance of biocrust-forming bacteria such as Microcoleus and Leptolyngbya. The outcomes of this research are expected to provide a basis to enhance biocrusts and conservation efforts and promote the use of biocrust cyanobacteria as global change indicators.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionZoology and Botany Department IBILCE/UNESP São Paulo State University, Rua Cristóvão Colombo, 2265-
Descrição: dc.descriptionCentre for Ecosystem Science School of Biological Earth & Environmental Sciences UNSW Sydney-
Descrição: dc.descriptionSchool of Biological Sciences University of Western Australia-
Descrição: dc.descriptionSchool of Biotechnology and Biomolecular Sciences The University of New South Wales-
Descrição: dc.descriptionZoology and Botany Department IBILCE/UNESP São Paulo State University, Rua Cristóvão Colombo, 2265-
Idioma: dc.languageen-
Relação: dc.relationGeoderma-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subject16S rRNA-
Palavras-chave: dc.subjectBiocrust-
Palavras-chave: dc.subjectCaatinga-
Palavras-chave: dc.subjectCyanobacterial diversity-
Palavras-chave: dc.subjectPampa-
Palavras-chave: dc.subjectScytonema-
Título: dc.titleBiocrust cyanobacterial composition, diversity, and environmental drivers in two contrasting climatic regions in Brazil-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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