Tropical Rain Forest and Climate Dynamics of the Atlantic Lowland, Southern Brazil, during the Late Quaternary
Abstract Palynological analysis of a core from the Atlantic rain forest region in Brazil provides unprecedented insight into late Quaternary vegetational and climate dynamics within this southern tropical lowland. The 576-cm-long sediment core is from a former beach-ridge “valley,” located 3 km inla...
Published in: | Quaternary Research |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2001
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1006/qres.2001.2264 http://api.elsevier.com/content/article/PII:S0033589401922641?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589401922641?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400010401 |
id |
crcambridgeupr:10.1006/qres.2001.2264 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1006/qres.2001.2264 2024-09-09T19:10:47+00:00 Tropical Rain Forest and Climate Dynamics of the Atlantic Lowland, Southern Brazil, during the Late Quaternary Behling, Hermann Negrelle, Raquel R. B. 2001 http://dx.doi.org/10.1006/qres.2001.2264 http://api.elsevier.com/content/article/PII:S0033589401922641?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589401922641?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400010401 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 56, issue 3, page 383-389 ISSN 0033-5894 1096-0287 journal-article 2001 crcambridgeupr https://doi.org/10.1006/qres.2001.2264 2024-08-28T04:01:54Z Abstract Palynological analysis of a core from the Atlantic rain forest region in Brazil provides unprecedented insight into late Quaternary vegetational and climate dynamics within this southern tropical lowland. The 576-cm-long sediment core is from a former beach-ridge “valley,” located 3 km inland from the Atlantic Ocean. Radio-carbon dates suggest that sediment deposition began prior to 35,000 14 C yr B.P. Between ca. 37,500 and ca. 27,500 14 C yr B.P. and during the last glacial maximum (LGM; ca. 27,500 to ca. 14,500 14 C yr B.P.), the coastal rain forest was replaced by grassland and patches of cold-adapted forest. Tropical trees, such as Alchornea , Moraceae/Urticaceae, and Arecaceae, were almost completely absent during the LGM. Furthermore, their distributions were shifted at least 750 km further north, suggesting a cooling between 3°C and 7°C and a strengthening of Antarctic cold fronts during full-glacial times. A depauperate tropical rain forest developed as part of a successional sequence after ca. 12,300 14 C yr B.P. There is no evidence that Araucaria trees occurred in the Atlantic lowland during glacial times. The rain forest was disturbed by marine incursions during the early Holocene period until ca. 6100 14 C yr B.P., as indicated by the presence of microforaminifera. A closed Atlantic rain forest then developed at the study site. Article in Journal/Newspaper Antarc* Antarctic Cambridge University Press Antarctic Quaternary Research 56 3 383 389 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Palynological analysis of a core from the Atlantic rain forest region in Brazil provides unprecedented insight into late Quaternary vegetational and climate dynamics within this southern tropical lowland. The 576-cm-long sediment core is from a former beach-ridge “valley,” located 3 km inland from the Atlantic Ocean. Radio-carbon dates suggest that sediment deposition began prior to 35,000 14 C yr B.P. Between ca. 37,500 and ca. 27,500 14 C yr B.P. and during the last glacial maximum (LGM; ca. 27,500 to ca. 14,500 14 C yr B.P.), the coastal rain forest was replaced by grassland and patches of cold-adapted forest. Tropical trees, such as Alchornea , Moraceae/Urticaceae, and Arecaceae, were almost completely absent during the LGM. Furthermore, their distributions were shifted at least 750 km further north, suggesting a cooling between 3°C and 7°C and a strengthening of Antarctic cold fronts during full-glacial times. A depauperate tropical rain forest developed as part of a successional sequence after ca. 12,300 14 C yr B.P. There is no evidence that Araucaria trees occurred in the Atlantic lowland during glacial times. The rain forest was disturbed by marine incursions during the early Holocene period until ca. 6100 14 C yr B.P., as indicated by the presence of microforaminifera. A closed Atlantic rain forest then developed at the study site. |
format |
Article in Journal/Newspaper |
author |
Behling, Hermann Negrelle, Raquel R. B. |
spellingShingle |
Behling, Hermann Negrelle, Raquel R. B. Tropical Rain Forest and Climate Dynamics of the Atlantic Lowland, Southern Brazil, during the Late Quaternary |
author_facet |
Behling, Hermann Negrelle, Raquel R. B. |
author_sort |
Behling, Hermann |
title |
Tropical Rain Forest and Climate Dynamics of the Atlantic Lowland, Southern Brazil, during the Late Quaternary |
title_short |
Tropical Rain Forest and Climate Dynamics of the Atlantic Lowland, Southern Brazil, during the Late Quaternary |
title_full |
Tropical Rain Forest and Climate Dynamics of the Atlantic Lowland, Southern Brazil, during the Late Quaternary |
title_fullStr |
Tropical Rain Forest and Climate Dynamics of the Atlantic Lowland, Southern Brazil, during the Late Quaternary |
title_full_unstemmed |
Tropical Rain Forest and Climate Dynamics of the Atlantic Lowland, Southern Brazil, during the Late Quaternary |
title_sort |
tropical rain forest and climate dynamics of the atlantic lowland, southern brazil, during the late quaternary |
publisher |
Cambridge University Press (CUP) |
publishDate |
2001 |
url |
http://dx.doi.org/10.1006/qres.2001.2264 http://api.elsevier.com/content/article/PII:S0033589401922641?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589401922641?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400010401 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Quaternary Research volume 56, issue 3, page 383-389 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1006/qres.2001.2264 |
container_title |
Quaternary Research |
container_volume |
56 |
container_issue |
3 |
container_start_page |
383 |
op_container_end_page |
389 |
_version_ |
1809826418614337536 |