Articles | Volume 17, issue 21
Research article
09 Nov 2020
Research article |  | 09 Nov 2020

Use of optical absorption indices to assess seasonal variability of dissolved organic matter in Amazon floodplain lakes

Maria Paula da Silva, Lino A. Sander de Carvalho, Evlyn Novo, Daniel S. F. Jorge, and Claudio C. F. Barbosa

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Cited articles

Abdo, M. S. A. and Silva, C. J.: Limnological characteristics of the water bodies of the Corutuba Nesting Site in Brazil's Pantanal, Acta Limnologica Brasiliensia, 6, 359–368, 2004. 
Affonso, A. G., Queiroz, H. L. d., and Novo, E. M. L. d. M.: Limnological characterization of floodplain lakes in Mamirauá Sustainable Development Reserve, Central Amazon (Amazonas State, Brazil), Acta Limnologica Brasiliensia, 23, 95–108, 2011. 
Agencia Nacional de Aguas (ANA): Hidroweb, available at:, last access: 26 October 2020. 
Almeida, F. F. and Melo, S.: Limnological considerations about an Amazonian floodplain lake (Catalao lake–Amazonas State, Brazil)/Consideracoes limnologicas sobre um lago da planicie de inundacao amazonica, Acta Sci., 31, 387–396, 2009. 
Augusto-Silva, P. B., Ogashawara, I., Barbosa, C. C. F., De Carvalho, L. A. S., Jorge, D. S. F., Fornari, C. I., and Stech, J. L.: Analysis of MERIS reflectance algorithms for estimating chlorophyll-a concentration in a Brazilian reservoir, Remote Sensing, 6, 11689–11707,, 2014. 
Short summary
In this study, we analyze the seasonal changes in the dissolved organic matter (DOM) quality (based on its optical properties) in four Amazon floodplain lakes. DOM plays a fundamental role in surface water chemistry, controlling metal bioavailability and mobility, and nutrient cycling. The model proposed in our paper highlights the potential to study DOM quality at a wider spatial scale, which may help to better understand the persistence and fate of DOM in the ecosystem.
Final-revised paper