WuGuoGuiotEtAl2014

Référence

Wu, H., Guo, Z., Guiot, J., Hatte, C., Peng, C., Yu, Y., Ge, J., Li, Q., Sun, A. and Zhao, D. (2014) Elevation-induced climate change as a dominant factor causing the late Miocene C4 plant expansion in the Himalayan foreland. Global Change Biology, 20(5):1461-1472. (Scopus )

Résumé

During the late Miocene, a dramatic global expansion of C4 plant distribution occurred with broad spatial and temporal variations. Although the event is well documented, whether subsequent expansions were caused by a decreased atmospheric CO2 concentration or climate change is a contentious issue. In this study, we used an improved inverse vegetation modeling approach that accounts for the physiological responses of C3 and C4 plants to quantitatively reconstruct the paleoclimate in the Siwalik of Nepal based on pollen and carbon isotope data. We also studied the sensitivity of the C3 and C4 plants to changes in the climate and the atmospheric CO2 concentration. We suggest that the expansion of the C4 plant distribution during the late Miocene may have been primarily triggered by regional aridification and temperature increases. The expansion was unlikely caused by reduced CO2 levels alone. Our findings suggest that this abrupt ecological shift mainly resulted from climate changes related to the decreased elevation of the Himalayan foreland. © 2013 John Wiley & Sons Ltd.

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@ARTICLE { WuGuoGuiotEtAl2014,
    AUTHOR = { Wu, H. and Guo, Z. and Guiot, J. and Hatte, C. and Peng, C. and Yu, Y. and Ge, J. and Li, Q. and Sun, A. and Zhao, D. },
    TITLE = { Elevation-induced climate change as a dominant factor causing the late Miocene C4 plant expansion in the Himalayan foreland },
    JOURNAL = { Global Change Biology },
    YEAR = { 2014 },
    VOLUME = { 20 },
    PAGES = { 1461-1472 },
    NUMBER = { 5 },
    NOTE = { cited By (since 1996)0 },
    ABSTRACT = { During the late Miocene, a dramatic global expansion of C4 plant distribution occurred with broad spatial and temporal variations. Although the event is well documented, whether subsequent expansions were caused by a decreased atmospheric CO2 concentration or climate change is a contentious issue. In this study, we used an improved inverse vegetation modeling approach that accounts for the physiological responses of C3 and C4 plants to quantitatively reconstruct the paleoclimate in the Siwalik of Nepal based on pollen and carbon isotope data. We also studied the sensitivity of the C3 and C4 plants to changes in the climate and the atmospheric CO2 concentration. We suggest that the expansion of the C4 plant distribution during the late Miocene may have been primarily triggered by regional aridification and temperature increases. The expansion was unlikely caused by reduced CO2 levels alone. Our findings suggest that this abrupt ecological shift mainly resulted from climate changes related to the decreased elevation of the Himalayan foreland. © 2013 John Wiley & Sons Ltd. },
    AUTHOR_KEYWORDS = { Inverse vegetation model; Late Miocene; Paleoclimate reconstruction; Pollen biome },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1111/gcb.12426 },
    ISSN = { 13541013 },
    KEYWORDS = { biome; C3 plant; C4 plant; carbon dioxide; carbon isotope; climate variation; concentration (composition); Miocene; paleoclimate; reconstruction; spatial distribution; spatial variation; temporal variation; vegetation dynamics, Himalayas; Nepal; Siwalik Hills },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84898445000&partnerID=40&md5=f280279dfcf0db3ef23b1fbc81370e6b },
}

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