Late Quaternary Vegetation and Climate of Southern Tierra del Fuego
Abstract Vegetation and climate over approximately the past 13,000 yr are reconstructed from fossil pollen in a 9.4-m mire section at Caleta Róbalo on Beagle Channel, Isla Navarino (54°56′S, 67°38′W), southern Tierra del Fuego. Fifty surface samples reflecting modern pollen dispersal serve to interp...
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Cambridge University Press (CUP)
1989
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crcambridgeupr:10.1016/0033-5894(89)90047-1 2024-06-23T07:46:59+00:00 Late Quaternary Vegetation and Climate of Southern Tierra del Fuego Heusser, Calvin J. 1989 http://dx.doi.org/10.1016/0033-5894(89)90047-1 http://api.elsevier.com/content/article/PII:0033589489900471?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589489900471?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400019773 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 31, issue 3, page 396-406 ISSN 0033-5894 1096-0287 journal-article 1989 crcambridgeupr https://doi.org/10.1016/0033-5894(89)90047-1 2024-06-05T04:04:48Z Abstract Vegetation and climate over approximately the past 13,000 yr are reconstructed from fossil pollen in a 9.4-m mire section at Caleta Róbalo on Beagle Channel, Isla Navarino (54°56′S, 67°38′W), southern Tierra del Fuego. Fifty surface samples reflecting modern pollen dispersal serve to interpret the record. Chronologically controlled by nine radiocarbon dates, fossil pollen assemblages are: Empetrum -Gramineae- Gunnera -Tubuliflorae (zone 3b, 13,000–11,850 yr B.P.), Gramineae- Empetrum -assorted minor taxa (zone 3a, 11,850-10,000 yr B.P.), Nothofagus -Gramineae-Tubuliflorae-Polypodiaceae (zone 2, 10,000–5000 yr B.P.), Nothofagus-Empetrum (zone 1b, 5000-3000 yr B.P.), and Empetrum-Nothofagus (zone 1a, 3000-0 yr B.P.). Assemblages show tundra under a cold, dry climate (zone 3), followed by open woodland (zone 2), as conditions became warmer and less dry, and later, with greater humidity and lower temperatures, by closed forest and the spread of mires (zone 1). Comparisons drawn with records from Antarctica, New Zealand, Tasmania, and the subantarctic islands demonstrate broadly uniform conditions in the circumpolar Southern Hemisphere. The influences of continental and maritime antarctic air masses were apparently considerable in Tierra del Fuego during cold late-glacial time, whereas Holocene climate was largely regulated by interplay between maritime polar and maritime tropical air. Article in Journal/Newspaper Antarc* Antarctic Antarctica Antarctica New Zealand Tundra Tierra del Fuego Cambridge University Press Antarctic New Zealand Quaternary Research 31 3 396 406 |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Vegetation and climate over approximately the past 13,000 yr are reconstructed from fossil pollen in a 9.4-m mire section at Caleta Róbalo on Beagle Channel, Isla Navarino (54°56′S, 67°38′W), southern Tierra del Fuego. Fifty surface samples reflecting modern pollen dispersal serve to interpret the record. Chronologically controlled by nine radiocarbon dates, fossil pollen assemblages are: Empetrum -Gramineae- Gunnera -Tubuliflorae (zone 3b, 13,000–11,850 yr B.P.), Gramineae- Empetrum -assorted minor taxa (zone 3a, 11,850-10,000 yr B.P.), Nothofagus -Gramineae-Tubuliflorae-Polypodiaceae (zone 2, 10,000–5000 yr B.P.), Nothofagus-Empetrum (zone 1b, 5000-3000 yr B.P.), and Empetrum-Nothofagus (zone 1a, 3000-0 yr B.P.). Assemblages show tundra under a cold, dry climate (zone 3), followed by open woodland (zone 2), as conditions became warmer and less dry, and later, with greater humidity and lower temperatures, by closed forest and the spread of mires (zone 1). Comparisons drawn with records from Antarctica, New Zealand, Tasmania, and the subantarctic islands demonstrate broadly uniform conditions in the circumpolar Southern Hemisphere. The influences of continental and maritime antarctic air masses were apparently considerable in Tierra del Fuego during cold late-glacial time, whereas Holocene climate was largely regulated by interplay between maritime polar and maritime tropical air. |
format |
Article in Journal/Newspaper |
author |
Heusser, Calvin J. |
spellingShingle |
Heusser, Calvin J. Late Quaternary Vegetation and Climate of Southern Tierra del Fuego |
author_facet |
Heusser, Calvin J. |
author_sort |
Heusser, Calvin J. |
title |
Late Quaternary Vegetation and Climate of Southern Tierra del Fuego |
title_short |
Late Quaternary Vegetation and Climate of Southern Tierra del Fuego |
title_full |
Late Quaternary Vegetation and Climate of Southern Tierra del Fuego |
title_fullStr |
Late Quaternary Vegetation and Climate of Southern Tierra del Fuego |
title_full_unstemmed |
Late Quaternary Vegetation and Climate of Southern Tierra del Fuego |
title_sort |
late quaternary vegetation and climate of southern tierra del fuego |
publisher |
Cambridge University Press (CUP) |
publishDate |
1989 |
url |
http://dx.doi.org/10.1016/0033-5894(89)90047-1 http://api.elsevier.com/content/article/PII:0033589489900471?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589489900471?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400019773 |
geographic |
Antarctic New Zealand |
geographic_facet |
Antarctic New Zealand |
genre |
Antarc* Antarctic Antarctica Antarctica New Zealand Tundra Tierra del Fuego |
genre_facet |
Antarc* Antarctic Antarctica Antarctica New Zealand Tundra Tierra del Fuego |
op_source |
Quaternary Research volume 31, issue 3, page 396-406 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/0033-5894(89)90047-1 |
container_title |
Quaternary Research |
container_volume |
31 |
container_issue |
3 |
container_start_page |
396 |
op_container_end_page |
406 |
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1802649875301531648 |