Drought sensitivity of the Amazon rainforest
Amazon forests are a key but poorly understood component of the global carbon cycle. If, as anticipated, they dry this century, they might accelerate climate change through carbon losses and changed surface energy balances. We used records from multiple long-term monitoring plots across Amazonia to assess forest responses to the intense 2005 drought, a possible analog of future events. Affected forest lost biomass, reversing a large long-term carbon sink, with the greatest impacts observed where the dry season was unusually intense. Relative to pre-2005 conditions, forest subjected to a 100-millimeter increase in water deficit lost 5.3 megagrams of aboveground biomass of carbon per hectare. The drought had a total biomass carbon impact of 1.2 to 1.6 petagrams (1.2 x 1015 to 1.6 x 1015 grams). Amazon forests therefore appear vulnerable to increasing moisture stress, with the potential for large carbon losses to exert feedback on climate change.
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Subjects: | P01 - Conservation de la nature et ressources foncières, P40 - Météorologie et climatologie, K01 - Foresterie - Considérations générales, F60 - Physiologie et biochimie végétale, F40 - Écologie végétale, forêt tropicale humide, sécheresse, changement climatique, biomasse, http://aims.fao.org/aos/agrovoc/c_7976, http://aims.fao.org/aos/agrovoc/c_2391, http://aims.fao.org/aos/agrovoc/c_1666, http://aims.fao.org/aos/agrovoc/c_926, http://aims.fao.org/aos/agrovoc/c_32372, |
Online Access: | http://agritrop.cirad.fr/549426/ http://agritrop.cirad.fr/549426/1/549426.pdf |
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dig-cirad-fr-5494262024-01-28T17:06:34Z http://agritrop.cirad.fr/549426/ http://agritrop.cirad.fr/549426/ Drought sensitivity of the Amazon rainforest. Phillips Oliver L., Aragao Luiz E.O.C., Lewis Simon L., Fisher Joshua B., Lloyd Jon, Lopez-Gonzalez Gabriela, Malhi Yadvinder, Monteagudo Abel, Peacock Julie, Quesada Carlos Alberto, Van Der Heijden Geertje, Almeida Samuel, Amaral Iêda Leão, Arroyo Luzmila, Aymard Gerardo A., Baker Timothy R., Banki Olaf, Blanc Lilian, et al.. 2009. Science, 323 : 1344-1347.https://doi.org/10.1126/science.1164033 <https://doi.org/10.1126/science.1164033> Drought sensitivity of the Amazon rainforest Phillips, Oliver L. Aragao, Luiz E.O.C. Lewis, Simon L. Fisher, Joshua B. Lloyd, Jon Lopez-Gonzalez, Gabriela Malhi, Yadvinder Monteagudo, Abel Peacock, Julie Quesada, Carlos Alberto Van Der Heijden, Geertje Almeida, Samuel Amaral, Iêda Leão Arroyo, Luzmila Aymard, Gerardo A. Baker, Timothy R. Banki, Olaf Blanc, Lilian et al., eng 2009 Science P01 - Conservation de la nature et ressources foncières P40 - Météorologie et climatologie K01 - Foresterie - Considérations générales F60 - Physiologie et biochimie végétale F40 - Écologie végétale forêt tropicale humide sécheresse changement climatique biomasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_2391 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_926 Amazonie http://aims.fao.org/aos/agrovoc/c_32372 Amazon forests are a key but poorly understood component of the global carbon cycle. If, as anticipated, they dry this century, they might accelerate climate change through carbon losses and changed surface energy balances. We used records from multiple long-term monitoring plots across Amazonia to assess forest responses to the intense 2005 drought, a possible analog of future events. Affected forest lost biomass, reversing a large long-term carbon sink, with the greatest impacts observed where the dry season was unusually intense. Relative to pre-2005 conditions, forest subjected to a 100-millimeter increase in water deficit lost 5.3 megagrams of aboveground biomass of carbon per hectare. The drought had a total biomass carbon impact of 1.2 to 1.6 petagrams (1.2 x 1015 to 1.6 x 1015 grams). Amazon forests therefore appear vulnerable to increasing moisture stress, with the potential for large carbon losses to exert feedback on climate change. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/549426/1/549426.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1126/science.1164033 10.1126/science.1164033 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=201947 info:eu-repo/semantics/altIdentifier/doi/10.1126/science.1164033 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1126/science.1164033 |
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P01 - Conservation de la nature et ressources foncières P40 - Météorologie et climatologie K01 - Foresterie - Considérations générales F60 - Physiologie et biochimie végétale F40 - Écologie végétale forêt tropicale humide sécheresse changement climatique biomasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_2391 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_32372 P01 - Conservation de la nature et ressources foncières P40 - Météorologie et climatologie K01 - Foresterie - Considérations générales F60 - Physiologie et biochimie végétale F40 - Écologie végétale forêt tropicale humide sécheresse changement climatique biomasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_2391 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_32372 |
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P01 - Conservation de la nature et ressources foncières P40 - Météorologie et climatologie K01 - Foresterie - Considérations générales F60 - Physiologie et biochimie végétale F40 - Écologie végétale forêt tropicale humide sécheresse changement climatique biomasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_2391 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_32372 P01 - Conservation de la nature et ressources foncières P40 - Météorologie et climatologie K01 - Foresterie - Considérations générales F60 - Physiologie et biochimie végétale F40 - Écologie végétale forêt tropicale humide sécheresse changement climatique biomasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_2391 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_32372 Phillips, Oliver L. Aragao, Luiz E.O.C. Lewis, Simon L. Fisher, Joshua B. Lloyd, Jon Lopez-Gonzalez, Gabriela Malhi, Yadvinder Monteagudo, Abel Peacock, Julie Quesada, Carlos Alberto Van Der Heijden, Geertje Almeida, Samuel Amaral, Iêda Leão Arroyo, Luzmila Aymard, Gerardo A. Baker, Timothy R. Banki, Olaf Blanc, Lilian et al., Drought sensitivity of the Amazon rainforest |
description |
Amazon forests are a key but poorly understood component of the global carbon cycle. If, as anticipated, they dry this century, they might accelerate climate change through carbon losses and changed surface energy balances. We used records from multiple long-term monitoring plots across Amazonia to assess forest responses to the intense 2005 drought, a possible analog of future events. Affected forest lost biomass, reversing a large long-term carbon sink, with the greatest impacts observed where the dry season was unusually intense. Relative to pre-2005 conditions, forest subjected to a 100-millimeter increase in water deficit lost 5.3 megagrams of aboveground biomass of carbon per hectare. The drought had a total biomass carbon impact of 1.2 to 1.6 petagrams (1.2 x 1015 to 1.6 x 1015 grams). Amazon forests therefore appear vulnerable to increasing moisture stress, with the potential for large carbon losses to exert feedback on climate change. |
format |
article |
topic_facet |
P01 - Conservation de la nature et ressources foncières P40 - Météorologie et climatologie K01 - Foresterie - Considérations générales F60 - Physiologie et biochimie végétale F40 - Écologie végétale forêt tropicale humide sécheresse changement climatique biomasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_2391 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_32372 |
author |
Phillips, Oliver L. Aragao, Luiz E.O.C. Lewis, Simon L. Fisher, Joshua B. Lloyd, Jon Lopez-Gonzalez, Gabriela Malhi, Yadvinder Monteagudo, Abel Peacock, Julie Quesada, Carlos Alberto Van Der Heijden, Geertje Almeida, Samuel Amaral, Iêda Leão Arroyo, Luzmila Aymard, Gerardo A. Baker, Timothy R. Banki, Olaf Blanc, Lilian et al., |
author_facet |
Phillips, Oliver L. Aragao, Luiz E.O.C. Lewis, Simon L. Fisher, Joshua B. Lloyd, Jon Lopez-Gonzalez, Gabriela Malhi, Yadvinder Monteagudo, Abel Peacock, Julie Quesada, Carlos Alberto Van Der Heijden, Geertje Almeida, Samuel Amaral, Iêda Leão Arroyo, Luzmila Aymard, Gerardo A. Baker, Timothy R. Banki, Olaf Blanc, Lilian et al., |
author_sort |
Phillips, Oliver L. |
title |
Drought sensitivity of the Amazon rainforest |
title_short |
Drought sensitivity of the Amazon rainforest |
title_full |
Drought sensitivity of the Amazon rainforest |
title_fullStr |
Drought sensitivity of the Amazon rainforest |
title_full_unstemmed |
Drought sensitivity of the Amazon rainforest |
title_sort |
drought sensitivity of the amazon rainforest |
url |
http://agritrop.cirad.fr/549426/ http://agritrop.cirad.fr/549426/1/549426.pdf |
work_keys_str_mv |
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