Land-Use System and Forest Floor Explain Prokaryotic Metacommunity Structuring and Spatial Turnover in Amazonian Forest-to-Pasture Conversion Areas

Autor: James R. Cole, Marcelo Antoniol Fontes, Ederson da Conceição Jesus, Wenceslau Geraldes Teixeira, Stefan Schwab, Iveraldo S. Dutra, J. F. Lumbreras, Adina Howe, Thiago Gonçalves Ribeiro, Paulo Emílio Ferreira da Motta, Aline Pacobahyba de Oliveira, Marcia Reed Rodrigues Coelho, Fernando Igne Rocha, Ana Carolina Borsanelli
Přispěvatelé: Univ Fed Rural Rio De Janeiro, Iowa State Univ, Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), Michigan State Univ, Universidade Federal de Goiás (UFG), Universidade Estadual Paulista (Unesp)
Rok vydání: 2021
Předmět:
Zdroj: Frontiers in Microbiology, Vol 12 (2021)
Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Frontiers in Microbiology
ISSN: 1664-302X
Popis: Made available in DSpace on 2021-06-25T15:04:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-04-21 USAID National Academies of Sciences, Engineering, and Medicine of the United States (NAS) United States National Science Foundation Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Advancing extensive cattle production is a major threat to biodiversity conservation in Amazonia. The dominant vegetation cover has a drastic impact on soil microbial communities, affecting their composition, structure, and ecological services. Herein, we explored relationships between land-use, soil types, and forest floor compartments on the prokaryotic metacommunity structuring in Western Amazonia. Soil samples were taken in sites under high anthropogenic pressure and distributed along a +/- 800 km gradient. Additionally, the litter and a root layer, characteristic of the forest environment, were sampled. DNA was extracted, and metacommunity composition and structure were assessed through 16S rRNA gene sequencing. Prokaryotic metacommunities in the bulk soil were strongly affected by pH, base and aluminum saturation, Ca + Mg concentration, the sum of bases, and silt percentage, due to land-use management and natural differences among the soil types. Higher alpha, beta, and gamma diversities were observed in sites with higher soil pH and fertility, such as pasture soils or fertile soils of the state of Acre. When taking litter and root layer communities into account, the beta diversity was significantly higher in the forest floor than in pasture bulk soil for all study regions. Our results show that the forest floor's prokaryotic metacommunity performs a spatial turnover hitherto underestimated to the regional scale of diversity. Univ Fed Rural Rio De Janeiro, Dept Soil, Seropedica, Brazil Iowa State Univ, Dept Agr & Biosyst Engn, Ames, IA USA Natl Agrobiol Res Ctr, Embrapa Agrobiol, Seropedica, Brazil Natl Soil Res Ctr, Embrapa Solos, Rio De Janeiro, Brazil Michigan State Univ, Dept Plant Soil & Microbial Sci, E Lansing, MI USA Univ Fed Goias, Dept Vet Med, Goiania, Go, Brazil Univ Estadual Paulista, Dept Support Prod & Anim Hlth, Aracatuba, Brazil Univ Estadual Paulista, Dept Support Prod & Anim Hlth, Aracatuba, Brazil USAID: AID-OAA-A-11-00012 National Academies of Sciences, Engineering, and Medicine of the United States (NAS): 4299 United States National Science Foundation: DBI-1356380 United States National Science Foundation: DBI-1759892 CNPq: 311796/2019-2 CNPq: 165571/2017-9 CAPES: 41/2018
Databáze: OpenAIRE
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