Journal articles
Elevation-induced climate change as a dominant factor causing the late Miocene C 4 plant expansion in the Himalayan foreland
Abstract : During the late Miocene, a dramatic global expansion of C 4 plant distribution occurred with broad spatial and temporal variations. Although the event is well documented, whether subsequent expansions were caused by a decreased atmospheric CO 2 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 C 3 and C 4 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 C 3 and C 4 plants to changes in the climate and the atmospheric CO 2 concentration. We suggest that the expansion of the C 4 plant distribution during the late Miocene may have been primarily triggered by regional ari-dification and temperature increases. The expansion was unlikely caused by reduced CO 2 levels alone. Our findings suggest that this abrupt ecological shift mainly resulted from climate changes related to the decreased elevation of the Himalayan foreland.
Cited literature [67 references]
https://hal-insu.archives-ouvertes.fr/insu-02269748
Contributor : Joel Guiot Connect in order to contact the contributor
Submitted on : Friday, August 23, 2019 - 11:44:01 AM
Last modification on : Monday, December 13, 2021 - 9:16:54 AM
Long-term archiving on: : Friday, January 10, 2020 - 6:26:30 AM
Contributor : Joel Guiot Connect in order to contact the contributor
Submitted on : Friday, August 23, 2019 - 11:44:01 AM
Last modification on : Monday, December 13, 2021 - 9:16:54 AM
Long-term archiving on: : Friday, January 10, 2020 - 6:26:30 AM
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Wu et al_GCB_Accepted_MS.pdf
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