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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Mixed Eucalyptus plantations induce changes in microbial communities and increase biological functions in the soil and litter layers

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Autor(es):
Pereira, Arthur P. A. [1, 2] ; Durrer, Ademir [1] ; Gumiere, Thiago [3] ; Goncalves, Jose L. M. [1] ; Robin, Agnes [1, 4] ; Bouillet, Jean-Pierre [4] ; Wang, Juntao [2, 5] ; Verma, Jay P. [2, 6] ; Singh, Brajesh K. [2, 7] ; Cardoso, Elke J. B. N. [1]
Número total de Autores: 10
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Piracicaba - Brazil
[2] Western Sydney Univ, Hawkesbury Inst Environm, Sydney, NSW - Australia
[3] Ctr Eau Terre Environm, Inst Natl Rech Sci, Quebec City, PQ - Canada
[4] Rech Agron Dev, Montpellier - France
[5] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing - Peoples R China
[6] Banaras Hindu Univ, Inst Environm & Sustainable Dev, Varanasi, Uttar Pradesh - India
[7] Western Sydney Univ, Global Ctr Land Based Innovat, Sydney, NSW - Australia
Número total de Afiliações: 7
Tipo de documento: Artigo Científico
Fonte: FOREST ECOLOGY AND MANAGEMENT; v. 433, p. 332-342, FEB 15 2019.
Citações Web of Science: 1
Resumo

Mixed plantations of Eucalyptus and N-2-fixing trees are ecologically beneficial because they stimulate organic matter cycling and increase carbon (C) and nitrogen (N) pools in the soil. However, the microbial mechanisms that contribute to the improvement of C and N dynamics remain poorly understood in managed forest ecosystems. Here, we evaluated interactions between the bacterial community and biological functions involved in C and N cycles in the soil and litter layers resulting from pure or mixed Eucalyptus grandis and Acacia mangium plantations. We hypothesized that the mixed plantations induce changes in the bacterial community that would drive increases in C and N pools in soil and litter layers. We established a field experiment with treatments including pure E. grandis without (E) and with nitrogen fertilization (E + N), pure A. mangium (A), and mixed E. grandis and A. mangium (E + A). Soil and litter from all treatments were sampled 27 and 39 months after planting. We evaluated the soil and litter bacterial community and biological functions involved in C and N cycles (i.e., microbial and enzyme activities, functional gene abundance, and soil-litter nutrient cycling). The treatments A and E + A showed an increase in C and N contents in the organic soil fractions. We found higher bacterial diversity and OTU richness in soil and litter, and higher nifH gene abundance in the soil under A and E + A, when compared to pure E. grandis (especially E + N) plantation. Our data suggest that the total N content influences the bacterial community structure of the litter, which undergoes alterations according to the treatment and forest age. Equally, Rhizobium, Bradyrhizobium and Sphingomonas showed a positive correlation with nifH and soil N. Our study provided evidence that changes in the microbial community in mixed A. mangium and E. grandis plantations is correlated with increased C and N cycling. These findings have implications for increased productivity and environmental sustainability, besides allowing for the optimization of mineral fertilization in forest plantations. (AU)

Processo FAPESP: 17/16610-3 - Plantações intercaladas de Eucalyptus grandis e Acacia mangium: o microbioma do ciclo do nitrogênio na interface solo e serapilheira
Beneficiário:Arthur Prudêncio de Araujo Pereira
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
Processo FAPESP: 10/16623-9 - Intensificação ecológica de plantações de eucaliptos pela associação com espécies leguminosas arbóreas fixadoras de nitrogênio
Beneficiário:José Leonardo de Moraes Gonçalves
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 16/18944-3 - Mudanças climáticas e eficiência energética na agricultura: um enfoque em estresse hídrico, manejo orgânico e biologia do solo
Beneficiário:Elke Jurandy Bran Nogueira Cardoso
Linha de fomento: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático
Processo FAPESP: 16/01636-4 - O metagenoma de florestas mistas de Eucalyptus urograndis: diversidade taxonômica e funcional do microbioma do solo associada à ciclagem do nitrogênio
Beneficiário:Arthur Prudêncio de Araujo Pereira
Linha de fomento: Bolsas no Brasil - Doutorado