Soil microbial community dynamics and assembly under long-term land use change

Autor(es)

Goss-Souza, Dennis ^{[1, 2, 3]} ; Mendes, Lucas William ^[2] ; Borges, Clovis Daniel ^{[2, 3]} ; Baretta, Dilmar ^[4] ; Tsai, Siu Mui ^[2] ; Rodrigues, Jorge L. M. ^{[1, 5]}

Afiliação do(s) autor(es)

^[1] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 - USA

^[2] Univ Sao Paulo, Ctr Nucl Energy Agr, Av Centenario 303, CP 96, BR-13400970 Piracicaba, SP - Brazil

^[3] Univ Sao Paulo, Luiz de Queiroz Sch Agr, Appl Ecol Grad Program, BR-13418900 Piracicaba, SP - Brazil

^[4] Santa Catarina State Univ, Dept Soils & Sustainabil, BR-89815630 Chapeco, SC - Brazil

^[5] Lawrence Berkeley Natl Lab, Environm Genom & Syst Biol Div, Berkeley, CA 94720 - USA

• Tipo de documento: Artigo Científico
• Fonte: FEMS MICROBIOLOGY ECOLOGY; v. 93, n. 10 OCT 2017.
• Citações Web of Science: 12

Resumo

We evaluated the bacterial and archaeal community dynamics and assembly in soils under forest, grassland and no-till cropping, using a high-throughput shotgun metagenomics approach. No significant alterations in alpha diversity were observed among different land uses, but beta diversity in grassland was lower than that observed in forest and no-till soils. Grassland communities showed assembly that predominantly followed the neutral model, i.e. high homogenizing selection with moderate dispersion, leading to biotic homogenization. Both no-till and forest soil communities were found to have assembly that predominantly followed a niche model, i.e. low rates of dispersal and weak homogenizing selection, resulting in maintenance of higher beta diversity relative to grasslands, indicating niche specialization or variable selection. Taken together, our results indicate that the patterns of assembly and their governing processes are dependent on the land use employed after deforestation, with consequences for taxa turnover and microbial functional potential. (AU)

• Processo FAPESP: 14/50320-4 - Dimensões US-BIOTA - São Paulo: pesquisa colaborativa: integrando as dimensões da biodiversidade microbiana ao longo de áreas de alteração do uso da terra em florestas tropicais
• Beneficiário: Tsai Siu Mui
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 08/58114-3 - Monitoring the microbial diversity and functional activities in response to land-use changes and deforestation under soybean and sugarcane cultivations
• Beneficiário: Tsai Siu Mui
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático