Pollen, XRF, microcharcoal and mean air annual temperature of the CO3 and CO14 records, Colônia Basin, São Paulo-Brazil
Fuente:
PANGAEA
Saved in:
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2019
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867169516814860288 |
|---|---|
| author | Rodríguez-Zorro, Paula A Ledru, Marie-Pierre Bard, Edouard Aquino-Alfonso, Olga Camejo, Adriana Daniau, Anne-Laure Favier, Charly García, Marta Mineli, Thays D Rostek, Frauke Ricardi-Branco, Fresia Oliveira Sawakuchi, André Simon, Quentin Tachikawa, Kazuyo Thouveny, Nicolas |
| author_facet | Rodríguez-Zorro, Paula A Ledru, Marie-Pierre Bard, Edouard Aquino-Alfonso, Olga Camejo, Adriana Daniau, Anne-Laure Favier, Charly García, Marta Mineli, Thays D Rostek, Frauke Ricardi-Branco, Fresia Oliveira Sawakuchi, André Simon, Quentin Tachikawa, Kazuyo Thouveny, Nicolas |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We analysed changes in mean air annual temperature (MAAT), vegetation and biomass burning on a long and continuous lake-peat sediment record from the Colônia basin, southeastern Brazil, examining the responses of a wet tropical rainforest over the last 180 ka. Stronger southern atmospheric circulation up to the latitude of Colônia was found for the penultimate glacial with lower temperatures than during the last glacial, while strengthening of the South American summer monsoon (SASM) circulation started during the last interglacial and progressively enhanced a longer wet summer season from 95 ka until the present. Past MAAT variations and fire history were possibly modulated by eccentricity, although with signatures which differ in average and in amplitude between the last 180 ka. Vegetation responses were driven by the interplay between the SASM and southern circulation linked to Antarctic ice volume, inferred by the presence of a cool mixed evergreen forest from 180 to 45 ka progressively replaced by a rainforest. We report cooler temperatures during the marine isotope stage 3 (MIS 3: 57-29 ka) than during the Last Glacial Maximum (LGM: 23-19 ka). Our findings show that tropical forest dynamics display different patterns than mid-latitude during the last 180 ka. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_907731 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Pollen, XRF, microcharcoal and mean air annual temperature of the CO3 and CO14 records, Colônia Basin, São Paulo-Brazil Rodríguez-Zorro, Paula A Ledru, Marie-Pierre Bard, Edouard Aquino-Alfonso, Olga Camejo, Adriana Daniau, Anne-Laure Favier, Charly García, Marta Mineli, Thays D Rostek, Frauke Ricardi-Branco, Fresia Oliveira Sawakuchi, André Simon, Quentin Tachikawa, Kazuyo Thouveny, Nicolas Araucaria; Atlantic forest; Glacial; Interglacial; peat-lake We analysed changes in mean air annual temperature (MAAT), vegetation and biomass burning on a long and continuous lake-peat sediment record from the Colônia basin, southeastern Brazil, examining the responses of a wet tropical rainforest over the last 180 ka. Stronger southern atmospheric circulation up to the latitude of Colônia was found for the penultimate glacial with lower temperatures than during the last glacial, while strengthening of the South American summer monsoon (SASM) circulation started during the last interglacial and progressively enhanced a longer wet summer season from 95 ka until the present. Past MAAT variations and fire history were possibly modulated by eccentricity, although with signatures which differ in average and in amplitude between the last 180 ka. Vegetation responses were driven by the interplay between the SASM and southern circulation linked to Antarctic ice volume, inferred by the presence of a cool mixed evergreen forest from 180 to 45 ka progressively replaced by a rainforest. We report cooler temperatures during the marine isotope stage 3 (MIS 3: 57-29 ka) than during the Last Glacial Maximum (LGM: 23-19 ka). Our findings show that tropical forest dynamics display different patterns than mid-latitude during the last 180 ka. |
| title | Pollen, XRF, microcharcoal and mean air annual temperature of the CO3 and CO14 records, Colônia Basin, São Paulo-Brazil |
| topic | Araucaria; Atlantic forest; Glacial; Interglacial; peat-lake |
| url | https://doi.org/10.1594/PANGAEA.907731 |