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  Folha Amazônica


Principal Investigators:

Gregory Paul Asner, Carnegie Institution (US-PI)
Mercedes Bustamante, UnB - Universidade de Brasília (SA-PI)


Abstract 2006:  Integrating Satellite, Modeling and Synthesis Approaches to Understand the Role of Selective Logging on Biogeochemical Cycles in Amazonia (View)


Investigation Duration:   10/2005 - 10/2007


LC-33 is a successor to investigation(s) LC-21.



Gregory Paul Asner, US-PI, Carnegie Institution
Eben North Broadbent, Carnegie Institution of Washington
Mercedes Bustamante, SA-PI, UnB - Universidade de Brasília
Maoyi Huang, Pacific Northwest National Laboratory
David E. Knapp, Carnegie Institution of Washington
Roberta Enders Martin, Carnegie Institution, Dept. of Global Ecology
Paulo José Silva Costa Oliveira, Carnegie Institution
Jose Natalino Macedo Silva, Brazilian Forest Service
José Salomão Silva, UnB


Research Sites:

Amazon Basin (large-scale studies)

Training and Education Activities - Proposed:

During this project, we will continue our training and education program in a variety of activities. Given the brief 2-year period for LBA Phase-III activities, our keystone education effort will involve one Brazilian and one American post-doctoral trainee. The post-docs will receive in-depth training in biogeochemical modeling, and they will work together to develop a detailed synthesis on the biogeochemistry of selectively logged areas in Amazonia and the pan-tropics. By the end of the project, the two post-docs will have functional abilities in modeling, and can go forward to teach in their respective careers. Our post-doctoral candidates (Gabriela Nardoto and Ashley Balantyne) have sufficient scientific experience in biogeochemistry and computing to meet the challenge of learning and using a variety of ecosystem models. A short-term (e.g., 1-2 month) exchange by the two post-docs between UnB and Carnegie will provide additional technical training on the use of computational modeling for land-use and biogeochemical research. The post-docs will learn the “hands-on” techniques used for model development and analysis using satellite data and field-based inputs. The rationale behind this effort is that basic laboratory-level experience is the best way to learn the modeling methods.

The project will hold two seminars to be taught at the University of Brasilia. The rationale behind the seminars is to provide the most information to the largest possible audience of students in a manageable amount of time. An ecosystem modeling seminar will be presented by the post-docs, Asner and Bustamante, working as a team. The seminar will be taught for one week and will involve both classroom and hands-on computer training. The topics covered will include: remote sensing inputs, model types and algorithms, and analysis of modeling results. A second seminar on biogeochemical processes will be developed by the two post-docs and taught at UnB. This seminar will run for one week and will cover topics such as rock-derived nutrient stocks and fluxes in forest ecosystems, field and laboratory measurements, and techniques for constructing a nutrient budget at the ecosystem level.


Training and Education Activities - Accomplished:

Currently none available.


Datasets/Posters Available:

Currently none available.



*Asner GP, Broadbent EN, Oliveira PJC, Keller M, Knapp DE, Silva JNM. (2006) Condition and fate of logged forests in the Brazilian Amazon. Proceedings of the National Academy of Sciences of the United States of America, 103, 12947-12950. (abstract)

Bustamante MMC, Medina E, Asner GP, Nardoto GB, Garcia-Montiel DC. (2006) Nitrogen cycling in tropical and temperate savannas. Biogeochemistry, 79, 209-237. (abstract)

Chambers JQ, Asner GP, Morton DC, Anderson LO, Saatch SS, Espirito-Santo FDB, Palace M, Souza C. (2007) Regional ecosystem structure and function: ecological insights from remote sensing of tropical forests. Trends in Ecology & Evolution, 22, 414-423. (abstract)

Foley JA, Asner GP, Costa MH, Coe MT, DeFries R, Gibbs HK, Howard EA, Olson S, Patz J, Ramankutty N, Snyder P. (2007) Amazonia revealed: forest degradation and loss of ecosystem goods and services in the Amazon Basin. Frontiers in Ecology and the Environment, 5, 25-32. (abstract)

Huang M, Asner GP, Keller M, Berry JA. (2007) An ecosystem model for tropical forest disturbance and selective logging. Journal of Geophysical Research-Biogeosciences, 113. (abstract)

Keller M, Asner GP, Blate G, McGlocklin J, Merry F, Pena-Claros M, Zweede J. (2007) Timber production in selectively logged tropical forests in South America. Frontiers in Ecology and the Environment, 5, 213-216. (abstract)

Sano EE, Ferreira LG, Asner GP, Steinke ET. (2007) Spatial and temporal probabilities of obtaining cloud-free Landsat images over the Brazilian tropical savanna. International Journal of Remote Sensing, 28, 2739-2752. (abstract)

Townsend AR, Cleveland CC, Asner GP, Bustamante MMC. (2007) Controls over foliar N : P ratios in tropical rain forests. Ecology, 88, 107-118. (abstract)

Broadbent EN, Asner GP, Pena-Claros M, Palace M, Soriano M. (2008) Spatial partitioning of biomass and diversity in a lowland Bolivian forest: Linking field and remote sensing measurements. Forest Ecology and Management, 255, 2602-2616. (abstract)

Davidson EA, Asner GP, STONE TA, Neill C, Figueiredo RO. (2008) Objective indicators of pasture degradation from spectral mixture analysis of Landsat imagery. Journal of Geophysical Research-Biogeosciences, 113. (abstract)


Matrix of Publications-Datasets:  more


Science Questions:

Land Cover and Land Use Change:

        LC-Q3 - What is the area of forest that is affected by selective logging each year? How does the intensity of selective logging influence forest ecosystem function, thus altering forest regrowth and flammability?
        LC-Q4 - What are plausible scenarios for future land cover change in Amazônia?

Nutrient Dynamics and Surface Water Chemistry:

        ND-Q1 - How do stocks, cycling rates and budgets of carbon and important elements nitrogen, phosphorus, potassium, calcium, magnesium, and aluminum change under different land covers and land uses?
        ND-Q2 - Are nutrients major factors that control the rates of regrowth and carbon accumulation in abandoned pastures and regrowing secondary forests?

Other Research Teams:

CD-01  -  CD-02  -  CD-03  -  CD-04  -  CD-05  -  CD-06  -  CD-07  -  CD-08  -  CD-09  -  
CD-10  -  CD-11  -  CD-12  -  CD-14  -  CD-15  -  CD-17  -  CD-18  -  CD-30  -  CD-31  -  
CD-32  -  CD-33  -  CD-34  -  CD-35  -  CD-36  -  CD-37  -  CD-40  -  CD-41  -  LC-01  -  
LC-02  -  LC-03  -  LC-04  -  LC-05  -  LC-06  -  LC-07  -  LC-08  -  LC-09  -  LC-10  -  
LC-11  -  LC-12  -  LC-13  -  LC-14  -  LC-15  -  LC-16  -  LC-21  -  LC-22  -  LC-23  -  
LC-24  -  LC-30  -  LC-31  -  LC-32  -  LC-34  -  LC-35  -  LC-36  -  LC-37  -  LC-38  -  
LC-39  -  ND-01  -  ND-02  -  ND-03  -  ND-04  -  ND-06  -  ND-07  -  ND-08  -  ND-09  -  
ND-10  -  ND-11  -  ND-30  -  ND-31  -  PC-30  -  TG-01  -  TG-02  -  TG-03  -  TG-04  -  
TG-05  -  TG-06  -  TG-07  -  TG-08  -  TG-09  -  TG-10  -  TG-30  -  TG-31  -  TG-32



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