@Article{McGlueSCZTEPSCA:2011:SyLaFl,
               author = "McGlue, Michael M. and Silva, Aguinaldo and Corradini, 
                         Fabr{\'{\i}}cio A. and Zani, Hiran and Trees, Mark A. and Ellis, 
                         Geoffrey S. and Parolin, Mauro and Swarzenski, Peter W. and Cohen, 
                         Andrew S. and Assine, Mario L.",
          affiliation = "Department of Geosciences, The University of Arizona, 1040 East 
                         4th Street, Tucson, AZ, 85721, USA and Departamento de 
                         Ci{\^e}ncias do Ambiente, Universidade Federal de Mato Grosso do 
                         Sul—UFMS-CPAN, Av. Rio Branco, 1270, Corumb{\'a}, MS, 79304-902, 
                         Brazil and Faculdade de Geografia, Universidade Federal do 
                         Par{\'a}-UFPA, Folha 31, Quadra 7, Lote Especial S/N, 
                         Marab{\'a}, PA, 68501-970, Brazil and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and Department of Geosciences, The 
                         University of Arizona, 1040 East 4th Street, Tucson, AZ, 85721, 
                         USA and Energy Resources Program, U.S. Geological Survey, Denver, 
                         CO, USA and Faculdade Estadual de Ci{\^e}ncias e Letras de Campo 
                         Mour{\~a}o, Av. Comendador Norberto Marcondes, 733, Campo 
                         Mour{\~a}o, PR, 87303-100, Brazil and U.S. Geological Survey, 
                         Santa Cruz, CA, USA and Department of Geosciences, The University 
                         of Arizona, 1040 East 4th Street, Tucson, AZ, 85721, USA and 
                         Departamento de Geologia Aplicada—IGCE, Universidade Estadual 
                         Paulista—UNESP/Campus Rio Claro, Av. 24-A, 1515, Rio Claro, SP",
                title = "Limnogeology in Brazil's “forgotten wilderness“: a synthesis from 
                         the large floodplain lakes of the Pantanal",
              journal = "Journal of Paleolimnology",
                 year = "2011",
               volume = "46",
               number = "2",
                pages = "273--289",
                month = "Aug.",
             keywords = "Pantanal, Limnogeology, Floodplain lakes, Tropical wetlands, 
                         Sedimentary organic matter, Freshwater sponges. LACUSTRINE 
                         ORGANIC-MATTER, FRESH-WATER SPONGES, MATO-GROSSO, AFRICAN RIFT, 
                         SEDIMENTS, RIVER, INDICATORS, WETLAND, CARBON, DELTA.",
             abstract = "Sediment records from floodplain lakes have a large and commonly 
                         untapped potential for inferring wetland response to global 
                         change. The Brazilian Pantanal is a vast, seasonally inundated 
                         savanna floodplain system controlled by the flood pulse of the 
                         Upper Paraguay River. Little is known, however, about how 
                         floodplain lakes within the Pantanal act as sedimentary basins, or 
                         what influence hydroclimatic variables exert on limnogeological 
                         processes. This knowledge gap was addressed through an actualistic 
                         analysis of three large, shallow (<5 m) floodplain lakes in the 
                         western Pantanal: Lagoa Ga{\'{\i}}va, Lagoa Mandior{\'e} and 
                         Baia Vermelha. The lakes are dilute (CO3 2\− > Si4+ > 
                         Ca2+), mildly alkaline, freshwater systems, the chemistries and 
                         morphometrics of which evolve with seasonal flooding. Lake sills 
                         are bathymetric shoals marked by siliciclastic fans and marsh 
                         vegetation. Flows at the sills likely undergo seasonal reversals 
                         with the changing stage of the Upper Paraguay River. Deposition in 
                         deeper waters, typically encountered in proximity to 
                         margin-coincident topography, is dominated by reduced silty-clays 
                         with abundant siliceous microfossils and organic matter. Stable 
                         isotopes of carbon and nitrogen, plus hydrogen index measured on 
                         bulk organic matter, suggest that contributions from algae 
                         (including cyanobacteria) and other C3-vegetation dominate in 
                         these environments. The presence of lotic sponge spicules, 
                         together with patterns of terrigenous sand deposition and 
                         geochemical indicators of productivity, points to the importance 
                         of the flood pulse for sediment and nutrient delivery to the 
                         lakes. Flood-pulse plumes, waves and bioturbation likewise affect 
                         the continuity of sedimentation. Short-lived radioisotopes 
                         indicate rates of 0.11-0.24 cm year\−1 at sites of 
                         uninterrupted deposition. A conceptual facies model, developed 
                         from insights gained from modern seasonal processes, can be used 
                         to predict limnogeological change when the lakes become isolated 
                         on the floodplain or during intervals associated with a 
                         strengthened flood pulse. Amplification of the seasonal cycle over 
                         longer time scales suggests carbonate, sandy lowstand fan and 
                         terrestrial organic matter deposition during arid periods, whereas 
                         deposition of lotic sponges, mixed aquatic organic matter, and 
                         highstand deltas characterizes wet intervals. The results hold 
                         substantial value for interpreting paleolimnological records from 
                         floodplain lakes linked to large tropical rivers with annual 
                         flooding cycles.",
                  doi = "10.1007/s10933-011-9538-5",
                  url = "http://dx.doi.org/10.1007/s10933-011-9538-5",
                 issn = "0921-2728",
                label = "lattes: 3368934680028882 4 McGlueSCZTEPSCA:2011:ASyFr",
             language = "en",
           targetfile = "mcglue.pdf",
        urlaccessdate = "05 maio 2024"
}