Stability of a Neotropical microrefugium during climatic instability
Aim The primary objectives of this study were (1) to assess, in the light of palaeoecological reconstruction, the climate stability hypothesis used by evolutionary biologists to explain high diversity in historically stable areas, and (2) to identify the response mechanisms of a tropical rain forest microrefugium to climatic variability. Location North-eastern Brazil, Serra de Maranguape. Methods Vegetation and climatic changes were reconstructed using a pollen record in a sediment core from a forest hollow, and the chronology was based on accelerator mass spectrometry radiocarbon analyses. Results Past vegetation dynamics consisted of three main forest types, shown by major compositional changes in rain forest assemblages between 5000 and 1000 cal. yr bp. Dense ombrophilous forest was abruptly replaced by heliophilous early successional tree taxa at 4275 cal. yr bp. These early successional tree taxa were established over a period of c. 100 years, and their dominance lasted for c. 750 years and was associated with dry conditions until 3525 cal. yr bp. Subsequently, the expansion of secondary successional tree taxa over a period of c. 550 years enabled the recovery of ombrophilous forest. Main conclusions The vegetation changes in the Serra de Maranguape provide evidence for the high sensitivity of this rain forest microrefugium to climatic variability on a multidecadal to millennial time-scale during the mid- to late Holocene. Despite the substantial compositional and climatic changes, this microrefugium apparently was continuously forested and responded to climatic instability by recruiting key species to its highly diverse stock. This evidence helps to address the joint concerns of evolutionary biologists and palaeoecologists regarding how forests can persist during periods of climatic variability by showing that some tropical regions can remain continuously forested despite reorganization during abrupt and short-term climatic changes.
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dig-cirad-fr-5752792024-01-28T22:30:35Z http://agritrop.cirad.fr/575279/ http://agritrop.cirad.fr/575279/ Stability of a Neotropical microrefugium during climatic instability. Montade Vincent, Ledru Marie Pierre, Burte Julien, Passos Rodrigues Martins Eduardo Sávio, Verola Christiano Franco, Ribeiro da Costa Itayguara, Magalhães e Silva Francisco Hilder. 2014. Journal of Biogeography, 41 (6) : 1215-1226.https://doi.org/10.1111/jbi.12283 <https://doi.org/10.1111/jbi.12283> Stability of a Neotropical microrefugium during climatic instability Montade, Vincent Ledru, Marie Pierre Burte, Julien Passos Rodrigues Martins, Eduardo Sávio Verola, Christiano Franco Ribeiro da Costa, Itayguara Magalhães e Silva, Francisco Hilder eng 2014 Journal of Biogeography K01 - Foresterie - Considérations générales P40 - Météorologie et climatologie F40 - Écologie végétale F70 - Taxonomie végétale et phytogéographie forêt tropicale humide changement climatique paléoclimatologie forêt dynamique des populations couverture végétale composition botanique lumière taxonomie biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_5508 http://aims.fao.org/aos/agrovoc/c_3062 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_25409 http://aims.fao.org/aos/agrovoc/c_15945 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7631 http://aims.fao.org/aos/agrovoc/c_33949 Brésil http://aims.fao.org/aos/agrovoc/c_1070 Aim The primary objectives of this study were (1) to assess, in the light of palaeoecological reconstruction, the climate stability hypothesis used by evolutionary biologists to explain high diversity in historically stable areas, and (2) to identify the response mechanisms of a tropical rain forest microrefugium to climatic variability. Location North-eastern Brazil, Serra de Maranguape. Methods Vegetation and climatic changes were reconstructed using a pollen record in a sediment core from a forest hollow, and the chronology was based on accelerator mass spectrometry radiocarbon analyses. Results Past vegetation dynamics consisted of three main forest types, shown by major compositional changes in rain forest assemblages between 5000 and 1000 cal. yr bp. Dense ombrophilous forest was abruptly replaced by heliophilous early successional tree taxa at 4275 cal. yr bp. These early successional tree taxa were established over a period of c. 100 years, and their dominance lasted for c. 750 years and was associated with dry conditions until 3525 cal. yr bp. Subsequently, the expansion of secondary successional tree taxa over a period of c. 550 years enabled the recovery of ombrophilous forest. Main conclusions The vegetation changes in the Serra de Maranguape provide evidence for the high sensitivity of this rain forest microrefugium to climatic variability on a multidecadal to millennial time-scale during the mid- to late Holocene. Despite the substantial compositional and climatic changes, this microrefugium apparently was continuously forested and responded to climatic instability by recruiting key species to its highly diverse stock. This evidence helps to address the joint concerns of evolutionary biologists and palaeoecologists regarding how forests can persist during periods of climatic variability by showing that some tropical regions can remain continuously forested despite reorganization during abrupt and short-term climatic changes. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/575279/1/document_575279.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1111/jbi.12283 10.1111/jbi.12283 info:eu-repo/semantics/altIdentifier/doi/10.1111/jbi.12283 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1111/jbi.12283 |
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K01 - Foresterie - Considérations générales P40 - Météorologie et climatologie F40 - Écologie végétale F70 - Taxonomie végétale et phytogéographie forêt tropicale humide changement climatique paléoclimatologie forêt dynamique des populations couverture végétale composition botanique lumière taxonomie biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_5508 http://aims.fao.org/aos/agrovoc/c_3062 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_25409 http://aims.fao.org/aos/agrovoc/c_15945 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7631 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_1070 K01 - Foresterie - Considérations générales P40 - Météorologie et climatologie F40 - Écologie végétale F70 - Taxonomie végétale et phytogéographie forêt tropicale humide changement climatique paléoclimatologie forêt dynamique des populations couverture végétale composition botanique lumière taxonomie biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_5508 http://aims.fao.org/aos/agrovoc/c_3062 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_25409 http://aims.fao.org/aos/agrovoc/c_15945 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7631 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_1070 |
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K01 - Foresterie - Considérations générales P40 - Météorologie et climatologie F40 - Écologie végétale F70 - Taxonomie végétale et phytogéographie forêt tropicale humide changement climatique paléoclimatologie forêt dynamique des populations couverture végétale composition botanique lumière taxonomie biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_5508 http://aims.fao.org/aos/agrovoc/c_3062 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_25409 http://aims.fao.org/aos/agrovoc/c_15945 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7631 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_1070 K01 - Foresterie - Considérations générales P40 - Météorologie et climatologie F40 - Écologie végétale F70 - Taxonomie végétale et phytogéographie forêt tropicale humide changement climatique paléoclimatologie forêt dynamique des populations couverture végétale composition botanique lumière taxonomie biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_5508 http://aims.fao.org/aos/agrovoc/c_3062 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_25409 http://aims.fao.org/aos/agrovoc/c_15945 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7631 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_1070 Montade, Vincent Ledru, Marie Pierre Burte, Julien Passos Rodrigues Martins, Eduardo Sávio Verola, Christiano Franco Ribeiro da Costa, Itayguara Magalhães e Silva, Francisco Hilder Stability of a Neotropical microrefugium during climatic instability |
description |
Aim The primary objectives of this study were (1) to assess, in the light of palaeoecological reconstruction, the climate stability hypothesis used by evolutionary biologists to explain high diversity in historically stable areas, and (2) to identify the response mechanisms of a tropical rain forest microrefugium to climatic variability. Location North-eastern Brazil, Serra de Maranguape. Methods Vegetation and climatic changes were reconstructed using a pollen record in a sediment core from a forest hollow, and the chronology was based on accelerator mass spectrometry radiocarbon analyses. Results Past vegetation dynamics consisted of three main forest types, shown by major compositional changes in rain forest assemblages between 5000 and 1000 cal. yr bp. Dense ombrophilous forest was abruptly replaced by heliophilous early successional tree taxa at 4275 cal. yr bp. These early successional tree taxa were established over a period of c. 100 years, and their dominance lasted for c. 750 years and was associated with dry conditions until 3525 cal. yr bp. Subsequently, the expansion of secondary successional tree taxa over a period of c. 550 years enabled the recovery of ombrophilous forest. Main conclusions The vegetation changes in the Serra de Maranguape provide evidence for the high sensitivity of this rain forest microrefugium to climatic variability on a multidecadal to millennial time-scale during the mid- to late Holocene. Despite the substantial compositional and climatic changes, this microrefugium apparently was continuously forested and responded to climatic instability by recruiting key species to its highly diverse stock. This evidence helps to address the joint concerns of evolutionary biologists and palaeoecologists regarding how forests can persist during periods of climatic variability by showing that some tropical regions can remain continuously forested despite reorganization during abrupt and short-term climatic changes. |
format |
article |
topic_facet |
K01 - Foresterie - Considérations générales P40 - Météorologie et climatologie F40 - Écologie végétale F70 - Taxonomie végétale et phytogéographie forêt tropicale humide changement climatique paléoclimatologie forêt dynamique des populations couverture végétale composition botanique lumière taxonomie biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_5508 http://aims.fao.org/aos/agrovoc/c_3062 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_25409 http://aims.fao.org/aos/agrovoc/c_15945 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7631 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_1070 |
author |
Montade, Vincent Ledru, Marie Pierre Burte, Julien Passos Rodrigues Martins, Eduardo Sávio Verola, Christiano Franco Ribeiro da Costa, Itayguara Magalhães e Silva, Francisco Hilder |
author_facet |
Montade, Vincent Ledru, Marie Pierre Burte, Julien Passos Rodrigues Martins, Eduardo Sávio Verola, Christiano Franco Ribeiro da Costa, Itayguara Magalhães e Silva, Francisco Hilder |
author_sort |
Montade, Vincent |
title |
Stability of a Neotropical microrefugium during climatic instability |
title_short |
Stability of a Neotropical microrefugium during climatic instability |
title_full |
Stability of a Neotropical microrefugium during climatic instability |
title_fullStr |
Stability of a Neotropical microrefugium during climatic instability |
title_full_unstemmed |
Stability of a Neotropical microrefugium during climatic instability |
title_sort |
stability of a neotropical microrefugium during climatic instability |
url |
http://agritrop.cirad.fr/575279/ http://agritrop.cirad.fr/575279/1/document_575279.pdf |
work_keys_str_mv |
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1792498771688423424 |