NOTICE -- The LBA-ECO Project website is no longer being supported.  This archive is a snapshot, as it existed in 2013, of the LBA-ECO website, maintained by NASA Goddard Space Flight Center, and now archived at the ORNL DAAC.  Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC.
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  Folha Amazônica


Principal Investigators:

Claudio José Reis de Carvalho, Embrapa Amazônia Oriental (SA-PI)
Eric A. Davidson, WHRC - Woods Hole Research Center (US-PI)
Ricardo Figueiredo, Embrapa Meio Ambiente (SA-PI)
Ima Vieira, MPEG - Museu Paraense Emilio Goeldi (SA-PI)


Abstract 2006:  Synthesis of Nutrient Interactions in Secondary Vegetation in Amazonia (View)

Resumo 2006:  Síntese das Interações de Nutrientes em Vegetação Secundária na Amazônia (Visualizar)


Investigation Duration:   03/2006 - 03/2008


ND-30 is a successor to investigation(s) ND-02.



Arlete Almeida, MPEG - Museu Paraense Emilio Goeldi
Thereza Cristina Araújo, UFPA
Gregory Paul Asner, Co-Investigator, Carnegie Institution
Claudio José Reis de Carvalho, SA-PI, Embrapa Amazônia Oriental
Fabíola Fernandes Costa, Embrapa Amazônia Oriental
Eric A. Davidson, US-PI, WHRC - Woods Hole Research Center
Ricardo Figueiredo, SA-PI, Embrapa Meio Ambiente
Francoise Ishida, INPA-AM
Eliane Constantinov Leal, MPEG - Museu Paraense Emilio Goeldi
Luciene Mota de Leão
Tânia de Sousa Leite, Embrapa Amazônia Oriental
Daniel Markewitz, Co-Investigator, University of Georgia
Patrícia Chaves de Oliveira, UFPA - Universidade Federal do Pará
Nilza Araújo Pacheco, EMBRAPA
Maria Beatriz Silva da Rosa, UFPA/MPEG/EMBRAPA
Tatiana Deane De Abreu Sa, Co-Investigator, EMBRAPA
Renata Tuma Saba, CNPQ
Marysol A. E. Schuler, Co-Investigator, EMBRAPA
Marília Silva, Embrapa Amazônia Oriental
Patrício de Souza Silva, Universidade do Estado do Pará
Cleo Marcelo Araujo Souza, Embrapa Amazonia Oriental
Thomas A. Stone, Co-Investigator, Woods Hole Research Center
Lívia Gabrig Turbay Rangel Vasconcelos, Embrapa Amazonia Oriental
Ima Vieira, SA-PI, MPEG - Museu Paraense Emilio Goeldi


Research Sites:

Pará Eastern (Belém)

Pará Western (Santarém) Rondonia

Training and Education Activities - Proposed:

1. The Brazilian coPIs of the project continue to supervise CNPq LBA bolsistas. The PI will work with the coPIs to engage the bolsistas in the synthesis activities described in this proposal.

2. To further advance the development of young Brazilian scientists interested in modeling, the PI will participate in the modeling short course offered by Dr. Marcos Costa at his university (Universidade Federal de Viçosa) and various Amazonian institutions that host his traveling short course. The short course is designed to teach introductory modeling approaches to Brazilian students using the Stella modeling framework, but does not, as yet, include a nutrient cycling example. A simplified version of the nutrient cycling model described here will be converted to Stella and presented in the course as a nutrient cycling modeling exercise.

3. The PI is working with Dr. Cleber Salimon and Ms. Silvia Bahri to write a booklet in Portuguese on the role of secondary forest vegetation in the Amazon Basin, directed to students at the level of introductory environmental studies. The objective of this outreach effort is to provide educational materials about the ecological and biogeochemical functions of forests.


Training and Education Activities - Accomplished:

Currently none available.


Datasets/Posters Available as of 2014-04-02

Datasets (with related publications, if any)

LBA-ECO ND-30 Fractional Cover of Mixed Land Use Ranches, Para and Rondonia, Brazil

  1. Davidson, E. A., G. P. Asner, T. A. Stone, C. Neill, and R. O. Figueiredo. 2008. Objective indicators of pasture degradation from spectral mixture analysis of Landsat imagery. J. Geophys. Res., 113, G00B03, doi:10.1029/2007JG000622.
LBA-ECO ND-30 Nutrient Analysis and Gas Fluxes, Forest Chronosequences, Para, Brazil:

  1. Davidson, E.A., C.J. Reis de Carvalho, A.M. Figueira, F.Y. Ishida, J.P.H.B. Ometto, G.B. Nardoto, R.T. Saba, S.N. Hayashi, E.C. Leal, I.C. G. Vieira and L.A. Martinelli. 2007. Recuperation of nitrogen cycling in Amazonian forests following agricultural abandonment. Nature Vol 447 21 June 2007 doi:10.1038/nature05900
LBA-ECO ND-30 Water Chemistry, Rainfall Exclusion, km 67, Tapajos National Forest

  1. Nepstad, D.C., P. Moutinho, M.B. Dias, E. Davidson, G. Cardinot, D. Markewitz, R. Figueiredo, N. Vianna, J. Chambers, D. Ray, J.B. Guerreiros, P. Lefebvre, L. Sternberg, M. Moreira, L. Barros, F.Y. Ishida, I. Tohlver, E. Belk, K. Kalif, and K. Schwalbe. 2002. The effects of partial throughfall exclusion on canopy processes, aboveground production, and biogeochemistry of an Amazon forest. Journal of Geophysical Research-Atmospheres 107(D20).



*Davidson EA, de Carvalho CJR, Figueira AM, Ishida FY, Ometto JPHB, Nardoto GB, Saba RT, Hayashi SN, Leal EC, Vieira ICG, Martinelli LA. (2007) Recuperation of nitrogen cycling in Amazonian forests following agricultural abandonment. Nature, 447. (abstract)

*Almeida ASd, STONE TA, Vieira ICG, Davidson EA. (2010) Non-frontier deforestation in the eastern Amazon. Earth Interactions, 14:1.

*Davidson EA, Figueiredo RO, Markewitz D, Aufdenkampe AK. (2010) Dissolved CO2 in small catchment streams of eastern Amazonia: A minor pathway of terrestrial carbon loss. JGR Biogeosciences, .

Figueiredo RO, Markewitz D, Davidson EA, Schuler AE, Watrin O, Silva P. (2010) Land-use effects on the chemical attributes of low-order streams in the eastern Amazon. Journal of Geophysical Research, .

Markewitz D, Devine S, Davidson EA, Brando P, Nepstad DC. (2010) Soil moisture depletion under simulated drought in the Amazon: impacts on deep root uptake. New Phytologist, 187, 592-607. (abstract)

Davidson, E., P. A. Lefebvre, P. M. Brando, D. M. Ray, S. E. Trumbore, L. A. Solorzano, J. N. Ferreira, M. M. C. Bustamante, and D. C. Nepstad. (2011) Carbon Inputs and Water Uptake in Deep Soils of an Eastern Amazon Forest. Forest Science, 57, 51-58. (abstract)


Matrix of Publications-Datasets:  more


Science Questions:

Carbon Dynamics:

        CD-Q3a - How do pools and fluxes of carbon and nutrients (in soils) of pasture/cropland change over time and what factors determine carbon gain or loss?
        CD-Q3c - What factors (biologically mediated, land use history, soil properties, etc.) control the rate of carbon sequestration in biomass and soils of regrowing forest?

Land Cover and Land Use Change:

        LC-Q1 - What are the rates and mechanisms of forest conversion to agricultural land uses, and what is the relative importance of these land uses?
        LC-Q2 - At what rate are converted lands abandoned to secondary forests; what is the fate of these converted lands, and what are the overall dynamic patterns of land conversion and abandonment?

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?
        ND-Q4 - How do changes in land use and climate alter the stocks, processes and fluxes of dissolved and particulate organic matter, nutrients, and trace gases from the uplands across the riparian zones and floodplains and down the channels of river corridors?
        ND-Q4a - How will the composition and quantity of nutrients and organic matter entering and being processed within streams be altered under different land-use change scenarios?
        ND-Q4c - To what extent do intact riparian zones buffer streams against changes due to anthropogenic activities in surrounding uplands?

Trace Gas and Aerosol Flux:

        TG-Q1 - How are fluxes of trace gases and aerosols between ecosystems (both upland and wetland) and the atmosphere of Amazônia affected by land cover and land use change?

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-33  -  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-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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