Skip to Main content Skip to Navigation
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.
Document type :
Journal articles
Complete list of metadatas

Cited literature [67 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-02269748
Contributor : Joel Guiot <>
Submitted on : Friday, August 23, 2019 - 11:44:01 AM
Last modification on : Saturday, November 7, 2020 - 3:02:00 AM
Long-term archiving on: : Friday, January 10, 2020 - 6:26:30 AM

File

Wu et al_GCB_Accepted_MS.pdf
Files produced by the author(s)

Identifiers

Citation

Haibin Wu, Zhengtang Guo, Joel Guiot, Christine Hatté, Changhui Peng, et al.. Elevation-induced climate change as a dominant factor causing the late Miocene C 4 plant expansion in the Himalayan foreland. Global Change Biology, Wiley, 2014, 20 (5), pp.1461-1472. ⟨10.1111/gcb.12426⟩. ⟨insu-02269748⟩

Share

Metrics

Record views

308

Files downloads

546