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Agricultural impacts of hydrobiogeochemical cycling in the Amazon: is there any solution? Authorship: FIGUEIREDO, R. de O.; CAK, A.; MARKEWITZ, D. Abstract: Expansion of agriculture in the Brazilian Amazon has been driven not just by demands from traditional, rural producers, but also large agriculture and cattle producers, both of whom have put... ... Repository: BDPA Publication year: 2020
Is biological nitrogen fixation important in tropical successional forests? Authorship: DAVIDSON, E. A.; MARKEWITZ, D.; FIGUEIREDO, R. de O.; NIFONG, R. Repository: BDPA Publication year: 2018
Hidrogeoquímica de um córrego amazônico: o caso de um igarapé na flona do Tapajós, Pará, Brasil. Authorship: FIGUEIREDO, R. de O.; MARKEWITZ, D. Resumo: Decorrente do seu imenso tamanho e das dificuldades de acesso a áreas remotas é desafiadora a geração de informação sobre a hidrogeoquímica de microbacias na Bacia Amazônica. Um estudo, ao lon... ... Repository: BDPA Publication year: 2016
Simulated drought in the Amazon: impacts on soil solution and nutrient fluxes. Authorship: MARKEWITZ, D.; FIGUEIREDO, R. de O.; DAVIDSON, E. A.; NEPSTAD, D. C. Repository: BDPA Publication year: 2011
Five native tree species and manioc under slash-and-mulch agroforestry in the eastern Amazon of Brazil: plant growth and soil responses. Authorship: JOSLIN, A. H.; MARKEWITZ, D.; MORRIS, L. A.; OLIVEIRA, F. de A.; FIGUEIREDO, R. de O.; KATO, O. R. Throughout the Amazon of Brazil, manioc (Manihot esculenta) is a staple crop produced through slash-and-burn agriculture. Nutrient losses during slash-and-burn can be large and nutrient demand by food... ... Repository: BDPA Publication year: 2011
Crescimento de cinco espécies nativas em successão natural na Amazônia Oriental. Authorship: JOSLIN, A.; MARKEWITZ, D.; MORRIS, L.; KATO, O. R.; FIGUEIREDO, R.; OLIVEIRA, F. de A. Na Amazônia Legal brasileira, mandioca (Manihot esculenta) é uma colheita principal para populações rurais cuja produção é feita através de agricultura iniciada com queimada. Sistemas agroflorestais d... ... Repository: BDPA Publication year: 2011
Discharge calcium concentration relationships in streams of the Amazon and Cerrado of Brazil: soil or land use controlled. Authorship: MARKEWITZ, D.; LAMON III, E. C.; BUSTAMANTE, M. M. C.; CHAVES, J.; FIGUEIREDO, R. de O.; JOHNSON, M. S.; KRUSCHE, A. V.; NEILL, C.; SILVA, J. S. O. Repository: BDPA Publication year: 2011
Land-use effects on the chemical attributes of low-order streams in the eastern Amazon. Authorship: FIGUEIREDO, R. de O.; MARKEWITZ, D.; DAVIDSON, E. A.; SCHULER, A. E.; WATRIN, O. dos S.; SILVA, P. de S. Deforestation is altering small catchment hydrobiogeochemistry in the Amazon. To evaluate land use change effects on water chemistry and other measures of water quality, five low-order streams were st... ... Repository: BDPA Publication year: 2010
Stream water chemistry assessment in agriculture catchments in Eastern Amazonia. Authorship: FIGUEIREDO, R. de O.; MARKEWITZ, D.; DAVIDSON, E. A.; SCHULER, M. A. E.; WATRIN, O. dos S.; SILVA, P. de S. Repository: BDPA Publication year: 2008
Throughfall reduction: Impacts on solution nutrient fluxes. Authorship: MARKEWITZ, D.; FIGUEIREDO, R. de O.; DAVIDSON, E. A.; NEPSTAD, D. C.; ROSA, M. B.; PORTELA, G.; SILVA, W. R. da; XABREGAS, E. N. de A. Repository: BDPA Publication year: 2008

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