The Hill of Six Lakes revisited: New data and re-evaluation of a key Pleistocene Amazon site
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 p...
| Autor principal: | D'Apolito, Carlos |
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| Outros Autores: | Absy, Maria Lúcia, Latrubesse, Edgardo Manuel |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Quaternary Science Reviews
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17821 |
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oai:repositorio:1-17821 |
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oai:repositorio:1-17821 The Hill of Six Lakes revisited: New data and re-evaluation of a key Pleistocene Amazon site D'Apolito, Carlos Absy, Maria Lúcia Latrubesse, Edgardo Manuel 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 Brasil Lake Pata 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. 2020-06-15T21:49:28Z 2020-06-15T21:49:28Z 2013 Artigo https://repositorio.inpa.gov.br/handle/1/17821 10.1016/j.quascirev.2013.07.013 en Volume 76, Pags. 140-155 Restrito Quaternary Science Reviews |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
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 Brasil Lake Pata |
| spellingShingle |
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 Brasil Lake Pata D'Apolito, Carlos The Hill of Six Lakes revisited: New data and re-evaluation of a key Pleistocene Amazon site |
| topic_facet |
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 Brasil Lake Pata |
| description |
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. |
| format |
Artigo |
| author |
D'Apolito, Carlos |
| author2 |
Absy, Maria Lúcia Latrubesse, Edgardo Manuel |
| author2Str |
Absy, Maria Lúcia Latrubesse, Edgardo Manuel |
| title |
The Hill of Six Lakes revisited: New data and re-evaluation of a key Pleistocene Amazon site |
| title_short |
The Hill of Six Lakes revisited: New data and re-evaluation of a key Pleistocene Amazon site |
| title_full |
The Hill of Six Lakes revisited: New data and re-evaluation of a key Pleistocene Amazon site |
| title_fullStr |
The Hill of Six Lakes revisited: New data and re-evaluation of a key Pleistocene Amazon site |
| title_full_unstemmed |
The Hill of Six Lakes revisited: New data and re-evaluation of a key Pleistocene Amazon site |
| title_sort |
hill of six lakes revisited: new data and re-evaluation of a key pleistocene amazon site |
| publisher |
Quaternary Science Reviews |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17821 |
| _version_ |
1787142429621616640 |
| score |
11.755432 |