Use este identificador para citar ou linkar para este item:
https://repositorio.inpa.gov.br/handle/1/17821
Título: | The Hill of Six Lakes revisited: New data and re-evaluation of a key Pleistocene Amazon site |
Autor: | D'Apolito, Carlos Absy, Maria Lúcia Latrubesse, Edgardo Manuel |
Palavras-chave: | Amazonia Ecological Models Ice Age Last Glacial Maximum Palaeoecology Pollen Sedimentary Records Temperature Depression Climate Change Ecology Forestry Glacial Geology Sedimentology Lakes Data Set Depositional Environment Ecological Modeling Herb Lacustrine Deposit Last Glacial Last Glacial Maximum Lowland Environment Paleoclimate Paleoecology Pleistocene Pollen Proxy Climate Record Ecology Forestry Lakes Pollen Amazonas Amazonia Lake Pata |
Data do documento: | 2013 |
Revista: | Quaternary Science Reviews |
É parte de: | Volume 76, Pags. 140-155 |
Abstract: | The new analyses of a sedimentary record of Lake Pata in the Hill of Six Lakes, in NW Amazon and its correlation with other Quaternary proxy records in the region provide new insights regarding the vegetation and climate of the lowland forest during the Last Glacial. Despite what has been reported previously in the literature, the sedimentary and pollen records are not continuous. The hill remained forested; however, clear signals of structural change are seen in the record, which indicate that the area experienced a significantly drier climate during the Last Glacial Maximum (LGM). The herbs and taxa that are known to be more dominant in seasonally dry forests were all more abundant during the glacial part of the record, and the cool-adapted elements were mixed with warm lowland elements, which indicates a temperature depression. A comparison of the palaeoecological data with other regional geoenvironmental records of the Upper Negro River basin and other areas of the Amazon provides additional support for a cooler and more seasonal environment during the middle Pleniglacial, which then became drier during the LGM. A "wet" LGM is strongly refuted; therefore, the palaeoclimatic and ecological models that used the previous proxy data from Six Lakes to sustain "wet" conditions and a "continuous forest record" during the LGM to reconstruct the palaeoenvironmental conditions in the Amazon should be reviewed. © 2013 Elsevier Ltd. |
DOI: | 10.1016/j.quascirev.2013.07.013 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Não existem arquivos associados a este item.
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.