Doctoral Candidate Edward Park and Dr. Latrubesse Receives NSF DDRI Award.

22 12 2015

Doctoral candidate Edward Park (Co-PI) and Professor Edgardo Latrubesse (PI) of the Department of Geography and the Environment has been awarded a Doctoral Dissertation Research Improvement grant by the National Science Foundation (NSF) for a multidisciplinary project in the Amazon River and floodplains. The title of the project is “Roles of tributaries, floodplains and the anabranching channels on suspended sediment transport patterns in the Amazon River”, which will be supported with the $ 14,687 grant. In this project, the research team will perform field surveys and collect in-situ samples along the Amazon River coupled with remote sensing products and laboratory analysis to characterize the continental-scale sediment transport mechanisms in the Amazon River channel-floodplain systems.

Abstract of the NSF project:

Large rivers play a fundamental role on the planet by transporting eroded materials from continent to the ocean, facilitating the nutrient transfer through biogeochemical cycles, and sustaining complex ecosystems and high biodiversity. However, their mechanisms of sediment transport and floodplain storage are still not well understood. In the case of the Amazon River, the largest river on our planet in water discharge, complexity in sediment transport pattern is affected by the inputs from large tributaries, anabranching channel pattern, and vast floodplains. This doctoral dissertation research will investigate the roles of large tributaries, anabranching channel planform, and vast complex floodplains on sediment transport patterns along the Amazon River. The results of this project will fill knowledge gaps on morphodynamics of large rivers as, traditionally, the assessments of sediment transport patterns have relied substantially on laboratory experiments, field measurements or numerical modeling on small to mid-scale rivers, but rarely on large rivers. Considering that large rivers generally follow the anabranching patterns, methods proposed in this project can be applied to variety of morphodynamics and environmental analyses of large river systems around the world. The results of this project will also be important to wetland ecology, water resources managements, remote sensing, and local policy makers. This research project will strengthen the ties between U.S and Brazilian institutions through collaborations and also incorporate educational outreach to local school organizations to support underrepresented k-12 students in the science.

Assessing sediment transport, mapping sedimentary environments and landforms in large rivers in multi-temporal scale have been areas of focus for river scientists across disciplines, because sediment plays a major role in the hydrophysical and ecological functions, evolution of the complex channel-floodplain system, and biogeochemical cycles in fluvial system. By integrating field hydrogeomorphic data with 16 years (2000-2015) of suspended sediment concentration maps over the entire Amazon River derived from remotely sensed data, this project will address the two core questions: (1) what are the spatiotemporal patterns of sediment transport at the major confluences along the anabranching main channel?; (2) what are the sediment transport, deposition patterns, and sediment budgets in the floodplains? The researchers will perform field surveys and geomorphic mapping, and collect in-situ samples along the Amazon River coupled with remote sensing products and laboratory analysis to characterize the macro-scale sediment transport mechanisms in the Amazon River channel-floodplain systems.

 




Dr. Edgardo Latrubesse Partners on $4.3 Million National Science Foundation Grant

3 02 2014

The Dynamics of Mountains, Landscapes and Climate in the Distribution and Generation of Biodiversity of the Amazon/Andean Forest

Professor Edgardo Latrubesse of the Department of Geography and the Environment has been awarded a grant by the National Science Foundation (NSF) for a multidisciplinary project in the Amazon/Andean Forest. The project titled “The Dynamics of Mountains, Landscapes and Climate in the Distribution and Generation of Biodiversity of the Amazon/Andean Forest,” will be supported with the $4.3 million NSF grant. In this project, scientists from both North and South America will work together to develop an integrated understanding of how geology, biology and climate interact to shape the species distribution and biodiversity in these forests over time.

The project is an interdisciplinary effort amongst University of Texas at Austin Professors, Dr. Paul A. Baker of Duke University, University of Washington, University of Michigan, Wake Forest, ECU and international collaborators from Brazil and Peru. It will also offer educational opportunities, training, and mentoring of graduate students, who will assist with fieldwork, laboratory studies, and modeling. Dr. Latrubesse will be managing a team with a budget of about $340,000, and UT Austin Prof. Brian Horton from the Jackson School will be bringing in a comparable amount, totaling approximately $680,000 in research funds. The ultimate goal is to understand the role of environment and environmental history in genetic differentiation of populations and the origins of new species.

From the grant abstract:

“The uplift of the Andes affects Amazon climate and hydrology. Andean uplift also generates the sediment fill, nutrient supply, river routing, and soil composition of the adjacent lowland basin of the Amazon and hence affects the productivity of its forests. But the interactions are bi-directional, because changes in climate, hydrology, and sediment supply influence rates of uplift through isostatic (buoyancy) effects produced by weathering and erosion… By deciphering how environment affects biodiversity and, conversely, how genetic sequences of plant species encode the history of the physical environment, it is envisioned that molecular phylogenetics will inform geological history, much like paleontology informs stratigraphic and paleo-environmental interpretation, and a new field of geo-genomics will emerge.”

You can learn more about Prof. Latrubesse and the scope of his research at the Latrubesse Research Group Website and his faculty profile.

 




New Publications Summer 2013

3 07 2013

Members of the Latrubesse Research Group have been busy this summer in and out of the field! Here are a few articles we have published so far this year:

Articles In Press 3-July-2013:

Filizola, N., E. M. Latrubesse, P. Fraizy, R. Souza, V. Guimarães, and J. L. Guyot. 2013. Was the 2009 flood the most hazardous or the largest ever recorded in the Amazon? Geomorphology

Montero, J. C., and E. M. Latrubesse. 2013. The igapó of the Negro River in central Amazonia: Linking late-successional inundation forest with fluvial geomorphology. Journal of South American Earth Sciences

Latrubesse, E. M., J. C. Stevaux, and K. R. Young. 2013. Hydro-geomorphologic processes and Quaternary landforms controlling biotic components in South American wetlands: Introduction. Journal of South American Earth Science

Marchetti, Z. Y., E. M. Latrubesse, M. S. Pereira, and C. G. Ramonell. 2013. Vegetation and its relationship with geomorphologic units in the Parana River floodplain, Argentina. Journal of South American Earth Sciences

Valente, C. R., E. M. Latrubesse, and L. G. Ferreira. 2013.Relationships among vegetation, geomorphology and hydrology in the Bananal Island tropical wetlands, Araguaia River basin, Central Brazil. Journal of South American Earth Sciences

Articles In Print 3-July-2013:

Abad, J. D., H. Montoro, and E. Latrubesse. 2013. Assessing the Effects of Climate Change on Tropical River Basins. EOS, Transactions of the American Geophysical Union 94 (3):32-32.

Lafrenz, M. D., R. A. Bean, and D. Uthman. 2013. Soil ripening following dam removal. Physical Geography:1-12.

Valente, C. R., and E. M. Latrubesse. 2012. Fluvial archive of peculiar avulsive fluvial patterns in the largest Quaternary intracratonic basin of tropical South America: The Bananal Basin, Central-Brazil. Palaeogeography, Palaeoclimatology, Palaeoecology 356–357 (0):62-74.

Latrubesse, E. M., J. C. Stevaux, E. H. Cremon, J.-H. May, S. H. Tatumi, M. A. Hurtado, M. Bezada, and J. B. Argollo. 2012. Late Quaternary megafans, fans and fluvio-aeolian interactions in the Bolivian Chaco, Tropical South America. Palaeogeography, Palaeoclimatology, Palaeoecology 356–357 (0):75-88.

Sinha, R., E. M. Latrubesse, and G. C. Nanson. 2012. Quaternary fluvial systems of tropics: Major issues and status of research. Palaeogeography, Palaeoclimatology, Palaeoecology 356–357 (0):1-15.




8th IAG International Conference on Geomorphology Special Session on Tropical Rivers

3 07 2013
Prof. Latrubesse in collaboration with Prof. Jose. C Stevaux (Brazil) and Prof. Rajiv Sinha (India) organized a special session in the 8th IAG International Conference on Geomorphology August, 27th to 31st, 2013,  Paris, France  Session S24A – Tropical Rivers:  Hydro-Physical Processes, Impacts, Hazards and Management (IGCP 582 and IAG Working Group on Tropical rivers)

geomorphology-second-circular_0The overall scope of the IGCP Unesco 582 project Hydro-Physical Processes, Impacts, Hazards and Management and the working group Tropical rivers of IAG is to provide an integrated assessment of long-term direct impacts of climate variability and human-induced change and management of tropical rivers basins by identification, quantification and modeling of key hydro-geomorphic indicators during the past and present times. The potential impacts of global change on fluvial systems and of their socioeconomic implications and flood hazards are also analyzed. Several of the largest and many of the most vulnerable rivers of the world are located in equatorial and monsoonal regions that are also some of the most active areas of fluvial sedimentation and erosion of the planet.This session has many presentations on Quaternary history, morphodynamics, hydro-geomorphology, hazards and management of tropical rivers from experts around the world. See more detailed information at:

http://www.geomorphology-iag-paris2013.com/en/sessions

#geomorphology

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Science Without Borders – Madeira River

24 05 2013

Latrubesse Research Group is in the Brazilian Amazon this summer conducting fieldwork on the Madeira River in collaboration with Jose Steveaux and Mario Assine from UNESP-Rio Claro. Our research here is part of the Science Without Borders Program funded by NSF (US) CAPES (Brazil).




5 New Graduates!

24 05 2013

Congratulations to Christine Bonthius, Richard Knox, Katherine Lininger, Edward Park, M. Anwar Sounny-Slitine for completing their MA in Geography at UT Austin this year.

Richard Knox will be teaching at West Point and Katherine Katherine Liniger will continue as a PhD student at Colorado State University.




Paleo3 Special Issue on Quaternary Fluvial Systems of Tropics

1 01 2013

Professor Latrubesse was a guest editor for this special issue with Rajiv Sinha and Gerald Nanson. This special issue included an article on megafans in the Bolivian Chaco (see reference below).

Latrubesse, E. M., J. C. Stevaux, E. H. Cremon, J.-H. May, S. H. Tatumi, M. A. Hurtado, M. Bezada, and J. B. Argollo. 2012. Late Quaternary megafans, fans and fluvio-aeolian interactions in the Bolivian Chaco, Tropical South America. Palaeogeography, Palaeoclimatology, Palaeoecology 356–357 (0):75-88.

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Latrubesse’s group students win awards

3 04 2012

NSF Graduate Research Fellowship Program  (GRFP)

Master’s student Katherine Lininger received the NSF Graduate Research Fellowship. The program recognizes and supports outstanding graduate students who are pursuing research-based master’s and doctoral degrees in fields within NSF’s mission. 

AAG Specialty Groups Award Field Research Grants to Graduate Students

Master’s student Christine Bonthius received the Field Study Travel Award (Master’s level) from the AAG Latin American Specialty Group, which is intended to support preliminary or reconnaissance fieldwork for research in Latin America. Christine will use the award to support her master’s thesis research on the Madeira River in Brazil.

Graduate Students Win Awards from the Korean-American Association for Geospatial and Environmental Sciences

Edward Park, UT Geography master’s student, won the Pixoneer Scholarship from the Korean-American Association for Geospatial and Environmental Sciences for his paper presentation at the 2012 annual meeting of the Association of American Geographers (AAG). The scholarship was established in 2008 by Pixoneer Geomatics, Inc. to provide financial assistance to graduate students in the research field of Geography, Geospatial Technologies and Environmental Sciences. Pixoneer Geomatics, Inc. is a GIS and remote sensing firm located at Daejon, South Korea, and the scholarship is awarded annually to students through the generous sponsorship of its CEO Jong Sik Yoon. Only two scholarships were awarded at the AAG annual meeting.

Departmental Awards Given to Graduate Students

Vince Clause, who will be a geography graduate student in the fall of 2012, received the Undergraduate Award, which is given to a major in the department who excels through a combination of academic excellence and leadership.




AAG Annual Meeting New York

25 02 2012

Many of the research group’s members are participating in paper sessions, panels, and poster sessions at the annual meeting of the Association of American Geographers (AAG) in New York City.

Topics range from Morphodynamics of an anabranching mega-river to river responses from man made structures to remote sensing.

Links to abstracts from AAG:

Edgardo Latrubesse, Maria S Pereira, Carlos G Ramonel, and Ricardo N Szupiany

Christine Bonthius

Katherine Lininger

Edward Park




Anual Symposium of IGCP 582 – Tropical Rivers

25 02 2012

The IGCP 582-Tropical Rivers comittee is pleased to announce the 2012 Annual Symposium. The symposioum will be held in the city of Iquitos, Peru from August 9 to August 11 of 2012. The meeting will cover hydrophysical processes, impacts, hazards and management of tropical rivers.

Visit website for more details: http://www.crearamazonia.org/tropicalrivers2012/







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