Relationship between microbial functions and community structure following agricultural intensification in South American Chaco

Autor: Silvina Vargas Gil, Marta Zulema Galván, Carolina Pérez Brandan, Jose Manuel Meriles, Jorgelina Huidobro
Jazyk: angličtina
Rok vydání: 2016
Předmět:
0301 basic medicine
Enzimas
Soil Microorganisms
Ordenación de Tierras Sostenible
SUSTAINABLE MANAGEMENT
Soil Science
Chaco Semiárido
SOIL ENZYMES
03 medical and health sciences
SOIL MICROBIOLOGY
Intensive Farming
Environmental protection
Microorganismos del Suelo
Explotación Agrícola Intensiva
Agroforestry
Community structure
MICROBIAL ACTIVITIES
04 agricultural and veterinary sciences
Enzymes
Microbial Activity
Otras Agricultura
Silvicultura y Pesca
Agricultural intensification
030104 developmental biology
Geography
Sustainable management
CIENCIAS AGRÍCOLAS
South american
purl.org/becyt/ford/4.1 [https]
040103 agronomy & agriculture
0401 agriculture
forestry
and fisheries
Sustainable Land Management
PHOSPHOLIPID FATTY ACIDS
Agricultura
Silvicultura y Pesca
purl.org/becyt/ford/4 [https]
Zdroj: Plant soil and environment 62 (7) : 321-328. (July 2016)
INTA Digital (INTA)
Instituto Nacional de Tecnología Agropecuaria
instacron:INTA
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Popis: Intensification of agricultural systems through the use of intensive agriculture and the advance of deforestation have led to a decrease of soil biological quality. Soil functional and structural microbiota are sensitive parameters to monitor changes caused by agricultural use. Different sites under soybean monoculture (continuous soybean) and soybean/maize rotation practices were selected. Samples were collected from agricultural soils under different periods of implantation: 4-year rotation; 15-year rotation; 5-year monoculture; and 24-year monoculture (M24). A site of native vegetation recently under agricultural production (RUA) was also sampled. Native vegetation soils (NV) adjacent to agricultural sites were sampled as a control. In general, the results showed that RUA and M24 had lower enzyme activities, less microbial abundance and low physical and chemical soil quality than those subjected to crop rotation. In contrast, both the bacterial and total microbial biomasses were significantly higher in NV and crop rotation than in soils under monoculture systems. Although it was expected that differences in microbial activities would be due to changes in microbial community abundance, the results indicated that changes in soil management produced faster alterations to soil enzyme activities than any modifications induced in the microbial community structure. Consequently, both aspects of microbial diversity, namely function and structure, were affected independently by agricultural intensification. Fil: Perez Brandan, Carolina Gabriela. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Salta-Jujuy. Estación Experimental Agropecuaria Salta; Argentina Fil: Huidobro, J.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Salta-Jujuy. Estación Experimental Agropecuaria Salta; Argentina Fil: Galván, Marta Zulema. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Salta-Jujuy. Estación Experimental Agropecuaria Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Vargas Gil, Silvina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Meriles, Jose Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Databáze: OpenAIRE
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