10.5061/DRYAD.J9KD51CCM
Li, Xiao-Qian
0000-0002-0746-0996
Institute of Botany
Xiang, Xiao-Guo
Nanchang University
Zhang, Qiang
Guangxi Institute of Botany
Jabbour, Florian
Institut de Systématique, Évolution, Biodiversité
Del C. Ortiz, Rosa
Missouri Botanical Garden
S. Erst, Andrey
Central Siberian Botanical Garden
Li, Zhen-Yu
Institute of Botany
Wang, Wei
0000-0001-6901-6375
Institute of Botany
Immigration dynamics of tropical and subtropical Southeast Asian limestone
karst floras
Dryad
dataset
2021
FOS: Biological sciences
2022-03-17T00:00:00Z
2022-03-17T00:00:00Z
en
https://doi.org/10.1098/rspb.2021.1308
https://doi.org/10.5281/zenodo.6325597
9858622 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Ex situ origins and dispersal of taxa have played important roles in the
assembly of island-like biodiversity hotspots. Insular limestone karsts in
Southeast Asia are hotspots of biodiversity and endemism, but the
immigration processes of their unique floras are still poorly
known. Here, we used Gesneriaceae as a proxy to investigate immigration
dynamics of tropical and subtropical Southeast Asian karst floras. We show
that immigration into subtropical Southeast Asian karst floras first
occurred in the early Miocene, with two peaks in the early to middle
Miocene and the Pliocene to early Pleistocene, whereas immigration into
tropical Southeast Asian karsts initiated in the late Eocene, with two
peaks in the late Oligocene and the late Miocene. The rich geological and
ecological diversities of different regions, together with habitat
isolation due to climatic changes, might be responsible for the different
immigration patterns. We also discover that Southeast Asian karst
biodiversity comprises a mix of immigrant pre-adapted lineages and
descendants from local acid soil ancestors, although niche shift from acid
soil to karst in tropical Southeast Asian islands was
lacking. These findings provide insights
into how Southeast Asian karsts respond to ongoing climate change and are
of particular importance for their conservation planning.