Biogeographical Evidences Help Revealing the Origin of Hainan Island
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Open Access
- 7 April 2016
- journal article
- Published by Public Library of Science (PLoS) in PLOS ONE
- Vol. 11 (4), e0151941
- https://doi.org/10.1371/journal.pone.0151941
Abstract
Both the continental or island origin of Hainan, and the Indo-Malaysian or East Asian affinity of its flora, are debatable. In this study, 196 families, 1283 genera and 3894 species of Hainan plants were recognized. Patterns of seed plant distribution were quantified at the generic and the family levels. The floras of Vietnam, and the adjacent Guangxi and Guangdong provinces of mainland China, were compared with Hainan. The results showed that the flora of Hainan Island is dominated by families and genera with tropical distributions. Among its floristic elements, tropical Asian distributions make up 23.85% of the total flora, while East Asian distributions contribute only 3.74%. There are only 7 genera and c. 10% of species endemic to Hainan Island. The Hainan flora has strong similarities to the flora of Vietnam at the family and the generic levels, and also to the flora of Guangxi, but less with the adjacent Guangdong province. The main conclusions are: Hainan’s flora is tropical in nature with a strongly tropical Asian affinity, and it has very low endemism at the generic and species levels, which implies a continental origin. We conjecture that Hainan Island could have been adjacent to northern Vietnam and the Guangxi at least in Eocene. This suggestion is supported by palaeobotanical, palaeomagnetic and volcanism studies.Keywords
This publication has 18 references indexed in Scilit:
- A phylogenetic classification of the land plants to accompany APG IIIBotanical Journal of the Linnean Society, 2009
- An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IIIBotanical Journal of the Linnean Society, 2009
- Finding a needle in the haystack: Regional analysis of suitable Eld’s deer (Cervus eldi) forest in Southeast AsiaBiological Conservation, 2005
- Cretaceous palaeomagnetic results from Hainan Island in south China supporting the extrusion model of Southeast AsiaTectonophysics, 1999
- Vertical‐axis block rotations in southwestern China since the Cretaceous: New Paleomagnetic results from Hainan IslandGeophysical Research Letters, 1995
- The Red River fault system in the Tonkin Gulf, VietnamTectonophysics, 1995
- Distribution of Floristic Richness and Its Conservation in Sri LankaConservation Biology, 1990
- New Light on the Plant Geography of Ceylon. II. The Ecological Biogeography of the Lowland Endemic Tree FloraJournal of Biogeography, 1987
- New Light on the Plant Geography of Ceylon. I. Historical Plant GeographyJournal of Biogeography, 1987
- Hawaii, a Natural HistoryTaxon, 1981