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@Article{CohenRosPesFriOli:2014:LaPlGl,
               author = "Cohen, Marcelo Cancela Lisboa and Rossetti, Dilce de F{\'a}tima 
                         and Pessenda, Luiz Carlos Ruiz and Friaes, Yuri and Oliveira, 
                         Paulo Eduardo de",
          affiliation = "Laboratory of Coastal Dynamics, Federal University of Par{\'a} / 
                         Faculty of Oceanography, Federal University of Par{\'a} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Late Pleistocene glacial forest of Humait{\'a} Western Amazonia",
              journal = "Palaeogeography, Palaeoclimatology, Palaeoecology",
                 year = "2014",
               volume = "415",
                pages = "37--47",
                 note = "{Informa{\c{c}}{\~o}es Adicionais: 
                         http://dx.doi.org/10.1016/j.palaeo.2013.12.025.}",
             keywords = "PALEOCLIMA, Quatern{\'a}rio, Amaz{\^o}nia, POLEN, {\'u}ltimo 
                         glacial.",
             abstract = "Glacial-aged vegetation dynamics of the Humait{\'a}Western 
                         Brazilian Amazonia were studied by pollen, sedimentary facies, 14C 
                         dating, \δ13Corg and C/Nmolar. Two sediment cores were taken 
                         to a depth of 10 and 8 m from areas covered by grassland and 
                         dense/open forest, respectively. The deposits represent a 
                         succession of sediment accumulation in active channel (N42,600 cal 
                         yr B.P.), abandoned channel/floodplain (N42,600 to ~39,000 cal yr 
                         B.P.), and oxbow lake sedimentary environments (~39,000 cal yr 
                         B.P. to modern). The predominance of mud sediments, depletion of 
                         \δ13Corg and decrease in C/Nmolar values identify the lake 
                         establishment. In these settings, low energy subaqueous conditions 
                         were developed, locally favoring preservation of a pollen 
                         assemblage representing herbaceous vegetation, some modern taxa 
                         from Amazonia and cold-adapted plants from the Andes represented 
                         by Alnus (211%), Hedyosmum (217%), Weinmannia (018%), Podocarpus 
                         (04%), Ilex (04%) and Drymis (01%), at least between N42,600 and 
                         b35,200 cal yr B.P. The herbs and modern taxa from Amazonia 
                         persisted through the Holocene, while the cold pollen assemblage 
                         became absent. The co-occurrence of Alnus with other cold adapted 
                         plants from the Andes during the late Pleistocene indicates that 
                         Alnus probably penetrated the Western Amazonia lowland or was 
                         growing closer to the study site due to cooler temperatures during 
                         glacial times. The present study presents the first report of a 
                         glacial age forest containing Alnus in areas of the Brazilian 
                         Amazonian lowlands. In addition to its palaeogeographical 
                         importance, this work demonstrates the effectiveness of using a 
                         combination of proxies for reconstructing sedimentary environments 
                         associated with vegetation.",
                 issn = "0031-0182",
                label = "lattes: 0307721738107549 2 CohenRosPesFriOli:2014:LaPlGl",
             language = "en",
           targetfile = "1-s2.0-S0031018213005622-main.pdf",
        urlaccessdate = "29 nov. 2020"
}


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