CH4 production and consumption in the tropical ecosystem through flows, CH4 vertical profiles and 13C and D isotopic compositions

• Grant number: 17/18327-7
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: October 01, 2017
• End date: August 27, 2019
• Field of knowledge: Biological Sciences - Ecology - Ecosystems Ecology
• Agreement: NSF - Dimensions of Biodiversity and BIOTA
• Principal Investigator: Plínio Barbosa de Camargo
• Grantee: Moacir Tuzzin de Moraes
• Host Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Associated research grant: 14/50320-4 - Dimensions US-BIOTA - São Paulo: collaborative research: integrating dimensions of microbial biodiversity across land use change in tropical forests, AP.BTA.TEM

Abstract

This project is guided by the question: "Integration of the methane for the production and consumption functional dimensions will allow us to predict the effect of land use changes to the CH4 cycle?". This proposal aims at evaluating the aspects of the methane production, by measuring the rate of production or methane concentration in the soil. Also, we aim at verifying how this rate/concentration varies with substrate availability and environmental conditions over time, to determine the sensitivity of methane production to the soil changes. Importantly, the isotopic composition of the flux or soil gas can be used to infer the relative contribution of different biochemical pathways in the production of methane at a particular site. Taken together, these approaches may provide essential information regarding the functional dimension of microbial biodiversity, and its relationship to the taxonomic and genetic dimensions. We will use these approaches to determine the responses of microbial biodiversity and functional activities to land use changes in Amazon rainforest soils. Our working hypothesis is that the Amazonian soils harbor a particular set of microorganisms, which have specific functioning on methane consumption/emission according to ecosystems. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SOLTANGHEISI, AMIN; DE MORAES, MOACIR TUZZIN; CHERUBIN, MAURICIO ROBERTO; ALVAREZ, DASIEL OBREGON; DE SOUZA, LEANDRO FONSECA; BIELUCZYK, WANDERLEI; NAVROSKI, DEISI; BETTONI TELES, ANA PAULA; PAVINATO, PAULO SERGIO; MARTINELLI, LUIZ ANTONIO; et al. Forest conversion to pasture affects soil phosphorus dynamics and nutritional status in Brazilian Amazon. SOIL & TILLAGE RESEARCH, v. 194, NOV 2019. (17/18327-7, 16/24695-6, 17/11332-5, 14/50320-4)