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The role of rivers on the regional carbon cycle

Abstract

This project aims to develop the tools to describe comprehensively the biogeochemistry of fluvial systems in the Amazon and the Pantanal and their role in regional and global carbon (C) cycles, in order to predict their influence and responses to a changing climate. Understand and coping with changes in ecosystems functioning demands a profound knowledge of intra and interannual variations. Models based on point data or site specific information do not allow accurate extrapolations. By extending both in duration and in coverage, our studies on fluvial systems will provide not only the necessary information about the cycles of C and other essential nutrients in these systems, but will also allow the development and validation of both riverine system models and their feedback on the global C models. This project relates not only directly to theme (a) of FAPESP PFPMCG, entitled ‘consequences of global climatic changes in the functioning of ecosystems, with emphasis on biodiversity and the cycles of water, carbon and nitrogen’, but it goes further than that to examine the cycle of other important nutrients, such as phosphorus. By tracking the role of fluvial systems in the regional C cycle, it will also be directly related to the design of the Brazilian climate model. Our main objective is to produce enough scientific information about the functioning of fluvial systems in the Amazon and the Pantanal to be able to develop basin-scale heuristic models linked to regional C cycle and-allowing to predict their responses to global climate change. Throughout the project we will be running extensive sampling at all sites, in order to obtain enough information to describe their functioning. In the last phase of the project (Iast two years) we will be able t use this consolidated database to develop and validate the hydro biogeochemical models. (AU)

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Scientific publications (21)
(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)
LESS, DIANI F. S.; WARD, NICHOLAS D.; RICHEY, JEFFREY E.; DA CUNHA, ALAN C.. Seasonal and Daily Variation of Hydrodynamic Conditions in the Amazon River Mouth: Influence of Discharge and Tide on Flow Velocit. Journal of Coastal Research, v. 37, n. 6, p. 1181-1192, . (08/58089-9)
REZENDE FILHO, A. T.; FURIAN, S.; VICTORIA, R. L.; MASCRE, C.; VALLES, V.; BARBIERO, L.. Hydrochemical variability at the Upper Paraguay Basin and Pantanal wetland. HYDROLOGY AND EARTH SYSTEM SCIENCES, v. 16, n. 8, p. 2723-2737, . (08/09086-7, 09/53524-1, 11/12770-0, 08/58089-9)
SEIDEL, MICHAEL; YAGER, PATRICIA L.; WARD, NICHOLAS D.; CARPENTER, EDWARD J.; GOMES, HELGA R.; KRUSCHE, ALEX V.; RICHEY, JEFFREY E.; DITTMAR, THORSTEN; MEDEIROS, PATRICIA M.. Molecular-level changes of dissolved organic matter along the Amazon River-to-ocean continuum. MARINE CHEMISTRY, v. 177, n. 2, SI, p. 218-231, . (08/58089-9)
SAWAKUCHI, HENRIQUE O.; BASTVIKEN, DAVID; SAWAKUCHI, ANDRE O.; KRUSCHE, ALEX V.; BALLESTER, MARIA V. R.; RICHEY, JEFFREY E.. Methane emissions from Amazonian Rivers and their contribution to the global methane budget. GLOBAL CHANGE BIOLOGY, v. 20, n. 9, p. 2829-2840, . (12/17359-9, 11/14502-2, 11/06609-1, 08/58089-9)
GALERON, MARIE-AIMEE; RADAKOVITCH, OLIVIER; CHARRIERE, BRUNO; VAULTIER, FREDERIC; VOLKMAN, JOHN K.; BIANCHI, THOMAS S.; WARD, NICOLAS D.; MEDEIROS, PATRICIA M.; SAWAKUCHI, HENRIQUE O.; TANK, SUZANNE; et al. Lipoxygenase-induced autoxidative degradation of terrestrial particulate organic matter in estuaries: A widespread process enhanced at high and low latitude. Organic Geochemistry, v. 115, p. 78-92, . (08/58089-9)
SAWAKUCHI, HENRIQUE O.; BASTVIKEN, DAVID; SAWAKUCHI, ANDRE O.; WARD, NICHOLAS D.; BORGES, CLOVIS D.; TSAI, SIU M.; RICHEY, JEFFREY E.; BALLESTER, MARIA VICTORIA R.; KRUSCHE, ALEX V.. Oxidative mitigation of aquatic methane emissions in large Amazonian rivers. GLOBAL CHANGE BIOLOGY, v. 22, n. 3, p. 1075-1085, . (11/06609-1, 12/17359-9, 11/14502-2, 08/58114-3, 08/58089-9)
MEDEIROS, PATRICIA M.; SEIDEL, MICHAEL; WARD, NICHOLAS D.; CARPENTER, EDWARD J.; GOMES, HELGA R.; NIGGEMANN, JUTTA; KRUSCHE, ALEX V.; RICHEY, JEFFREY E.; YAGER, PATRICIA L.; DITTMAR, THORSTEN. Fate of the Amazon River dissolved organic matter in the tropical Atlantic Ocean. GLOBAL BIOGEOCHEMICAL CYCLES, v. 29, n. 5, p. 677-690, . (08/58089-9)
RICHEY, JEFFREY E.; BALLESTER, MARIA VICTORIA; DAVIDSON, ERIC A.; JOHNSON, MARK S.; KRUSCHE, ALEX V.. Land-Water interactions in the amazon. BIOGEOCHEMISTRY, v. 105, n. 1-3, p. 1-5, . (03/13172-2, 08/58089-9)
NEILL, CHRISTOPHER; COE, MICHAEL T.; RISKIN, SHELBY H.; KRUSCHE, ALEX V.; ELSENBEER, HELMUT; MACEDO, MARCIA N.; MCHORNEY, RICHARD; LEFEBVRE, PAUL; DAVIDSON, ERIC A.; SCHEFFLER, RAPHAEL; et al. Watershed responses to Amazon soya bean cropland expansion and intensification. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, v. 368, n. 1619, SI, . (08/58089-9)
GAGNE-MAYNARD, WILLIAM C.; WARD, NICHOLAS D.; KEIL, RICHARD G.; SAWAKUCHI, HENRIQUE O.; DA CUNHA, ALAN C.; NEU, VANIA; BRITO, DAIMIO C.; LESS, DIANI F. DA SILVA; DINIZ, JOEL E. M.; VALERIO, ALINE DE MATOS; et al. Evaluation of Primary Production in the Lower Amazon River Based on a Dissolved Oxygen Stable Isotopic Mass Balance. FRONTIERS IN MARINE SCIENCE, v. 4, . (08/58089-9)
WARD, NICHOLAS D.; BIANCHI, THOMAS S.; MEDEIROS, PATRICIA M.; SEIDEL, MICHAEL; RICHEY, JEFFREY E.; KEIL, RICHARD G.; SAWAKUCHI, HENRIQUE O.. Where Carbon Goes When Water Flows: Carbon Cycling across the Aquatic Continuum. FRONTIERS IN MARINE SCIENCE, v. 4, . (08/58089-9)
WARD, NICHOLAS D.; KRUSCHE, ALEX V.; SAWAKUCHI, HENRIQUE O.; BRITO, DAIMIO C.; CUNHA, ALAN C.; SOUSA MOURA, JOSE MAURO; DA SILVA, RODRIGO; YAGER, PATRICIA L.; KEIL, RICHARD G.; RICHEY, JEFFREY E.. The compositional evolution of dissolved and particulate organic matter along the lower Amazon River-Obidos to the ocean. MARINE CHEMISTRY, v. 177, n. 2, SI, p. 244-256, . (08/58089-9)
SEIDEL, MICHAEL; DITTMAR, THORSTEN; WARD, NICHOLAS D.; KRUSCHE, ALEX V.; RICHEY, JEFFREY E.; YAGER, PATRICIA L.; MEDEIROS, PATRICIA M.. Seasonal and spatial variability of dissolved organic matter composition in the lower Amazon River. BIOGEOCHEMISTRY, v. 131, n. 3, p. 281-302, . (08/58089-9)
WARD, NICHOLAS D.; BIANCHI, THOMAS S.; SAWAKUCHI, HENRIQUE O.; GAGNE-MAYNARD, WILLIAM; CUNHA, ALAN C.; BRITO, DAIMIO C.; NEU, VANIA; VALERIO, ALINE DE MATOS; DA SILVA, RODRIGO; KRUSCHE, ALEX V.; et al. The reactivity of plant-derived organic matter and the potential importance of priming effects along the lower Amazon River. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES, v. 121, n. 6, p. 1522-1539, . (08/58089-9)
FURIAN, SONIA; CURTI MARTINS, ELISANGELA ROSEMERI; PARIZOTTO, TATIANA MASCARI; REZENDE-FILHO, ARY TAVARES; VICTORIA, REYNALDO LUIZ; BARBIERO, LAURENT. Chemical diversity and spatial variability in myriad lakes in Nhecolandia in the Pantanal wetlands of Brazil. Limnology and Oceanography, v. 58, n. 6, p. 2249-2261, . (08/09086-7, 11/12770-0, 08/58089-9)
BAESE, FRANK; ELSENBEER, HELMUT; NEILL, CHRISTOPHER; KRUSCHE, ALEX V.. Differences in throughfall and net precipitation between soybean and transitional tropical forest in the southern Amazon, Brazil. AGRICULTURE ECOSYSTEMS & ENVIRONMENT, v. 159, p. 19-28, . (08/58089-9)
WARD, NICHOLAS D.; KEIL, RICHARD G.; MEDEIROS, PATRICIA M.; BRITO, DAIMIO C.; CUNHA, ALAN C.; DITTMAR, THORSTEN; YAGER, PATRICIA L.; KRUSCHE, ALEX V.; RICHEY, JEFFREY E.. Degradation of terrestrially derived macromolecules in the Amazon River. NATURE GEOSCIENCE, v. 6, n. 7, p. 530-533, . (08/58089-9)
RASERA, MARIA DE FATIMA F. L.; KRUSCHE, ALEX V.; RICHEY, JEFFREY E.; BALLESTER, MARIA V. R.; VICTORIA, REYNALDO L.. Spatial and temporal variability of pCO(2) and CO2 efflux in seven Amazonian Rivers. BIOGEOCHEMISTRY, v. 116, n. 1-3, p. 241-259, . (08/58089-9)
WARD, NICHOLAS D.; SAWAKUCHI, HENRIQUE O.; NEU, VANIA; LESS, DIANI F. S.; VALERIO, ALINE M.; CUNHA, ALAN C.; KAMPEL, MILTON; BIANCHI, THOMAS S.; KRUSCHE, ALEX V.; RICHEY, JEFFREY E.; et al. Velocity-amplified microbial respiration rates in the lower Amazon River. LIMNOLOGY AND OCEANOGRAPHY LETTERS, v. 3, n. 3, SI, p. 265-274, . (08/58089-9)
WARD, NICHOLAS D.; SAWAKUCHI, HENRIQUE O.; RICHEY, JEFFREY E.; KEIL, RICHARD G.; BIANCHI, THOMAS S.. Enhanced Aquatic Respiration Associated With Mixing of Clearwater Tributary and Turbid Amazon River Waters. Frontiers in Earth Science, v. 7, . (08/58089-9)
COPPOLA, ALYSHA I.; SEIDEL, MICHAEL; WARD, NICHOLAS D.; VIVIROLI, DANIEL; NASCIMENTO, GABRIELA S.; HAGHIPOUR, NEGAR; REVELS, BRANDI N.; ABIVEN, SAMUEL; JONES, MATTHEW W.; RICHEY, JEFFREY E.; et al. Marked isotopic variability within and between the Amazon River and marine dissolved black carbon pools. NATURE COMMUNICATIONS, v. 10, . (08/58089-9)

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