Kinetics and molecular variations of humic compounds formed from the decomposition of aquatic macrophytes.

• Grant number: 11/10178-6
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: December 01, 2011
• End date: August 31, 2015
• Field of knowledge: Biological Sciences - Ecology - Ecosystems Ecology
• Principal Investigator: Irineu Bianchini Júnior
• Grantee: Argos Willian de Almeida Assunção
• Host Institution: Centro de Ciências Biológicas e da Saúde (CCBS). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated scholarship(s): 13/26984-7 - Kinetics and molecular changes of fulvic and humic acids formed from decomposition of Oxycaryum cubense, BE.EP.DR

Abstract

Considering the macrophytes represent an important part of the biomass of aquatic environments and that their decomposition is an important source of detritus. The aim of this project is to characterize the kinetics and molecular variations in humic substances from the decomposition process of species Salvinia molesta, Egeria najas, Eichhornia azurea and Scirpus cubensis of aquatic macrophytes in the presence and absence of oxygen. For this laboratory bioassays will be performed with incubations containing fragments of plants, on the sample will be evaluated pH,electric conductivity, organic and inorganic carbon, will also be evaluated the formation of humic acid and fulvic acid and its molecular variations by spectroscopic methods.

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)

DE ALMEIDA ASSUNCAO, ARGOS WILLIAN; DE SOUZA, BRAYAN PETRICK; LOPES DA SILVA, WILSON TADEU; CUNHA-SANTINO, MARCELA BIANCHESSI; BIANCHINI, JR., IRINEU. Molecular changes of aquatic humic substances formed from four aquatic macrophytes decomposed under different oxygen conditions. CHEMISTRY AND ECOLOGY, v. 33, n. 10, p. 918-931, 2017. (11/10178-6, 11/16990-4)

DE ALMEIDA ASSUNCAO, ARGOS WILLIAN; SOUZA, BRAYAN PETRICK; DA CUNHA-SANTINO, MARCELA BIANCHESSI; BIANCHINI, JR., IRINEU. Formation and mineralization kinetics of dissolved humic substances from aquatic macrophytes decomposition. Journal of Soils and Sediments, v. 18, n. 4, p. 1252-1264, APR 2018. (11/10178-6, 11/16990-4)