Abstract
Background
The Sunda-Sahul Convergence Zone, defined here as the area comprising Australia, New Guinea, and Southeast Asia (Indonesia to Myanmar), straddles the Sunda and Sahul continental shelves and is one of the most biogeographically famous and important regions in the world. Floristically, it is thought to harbour a large amount of the world’s diversity. Despite the importance of the area, a checklist of the flora has never before been published. Here we present the first working checklist of vascular plants for the Sunda-Sahul Convergence Zone. The list was compiled from 24 flora volumes, online databases and unpublished plot data. Taxonomic nomenclature was updated, and each species was coded into nested biogeographic regions. The list includes 60,415 species in 5,135 genera and 363 families of vascular plants.
New information
This is the first species-level checklist of the region and presents an updated census of the region’s floristic biodiversity. The checklist confirms that species richness of the SSCZ is comparable to that of the Neotropics, and highlights areas in need of further documentation and taxonomic work. This checklist provides a novel dataset for studying floristic ecology and evolution in this biogeographically important region of very high global biodiversity.
Keywords: Southeast Asia, Australia, Wallacea, biogeography, exchange, species list, diversity
Introduction
The Sahul continental shelf comprises Australia and the island of New Guinea, while the Sunda continental shelf comprises mainland Southeast Asia (Myanmar, Cambodia, Vietnam, Laos, Thailand, Peninsular Malaysia) and Indonesia west of Wallace’s Line. Between the Sunda and Sahul shelves lies Wallacea, a biogeographic region composed of a complex conglomerate of continental fragments and island arcs of varied origins (Hall 2012). Wallacea encompasses the Philippines, Timor-Leste, and parts of Indonesia (Fig. 1).
The Sunda and Sahul shelves converged approximately 25 Mya, following the rifting of Sahul from Antarctica approximately 45 Mya, its northward drift, and its contact with Wallacea and Sunda at the Oligocene-Miocene boundary (Hall 2002, Zahirovic et al. 2016). This collision facilitated the exchange of biota that had been evolving in isolation for at least 20 My (Crayn et al. 2015, Sniderman and Jordan 2011, Kooyman et al. 2019). The Sunda-Sahul biotic exchange provides a natural experiment to study evolution and biogeography, and has fascinated scientists since the time of Alfred Wallace (Wallace 1860). However, despite considerable interest, study and speculation on the biogeography of the region, much remains to be understood regarding which taxa were exchanged, when they were exchanged and the processes by which this occurred.
A plethora of terms for areas and the floristic exchange that occurred between them has accumulated due to the longstanding biogeographic interest in the region. Parts of the area of focus have been variously referred to as the ‘Indo-Australian archipelago’ (Lohman et al. 2011), the ‘Southeast Asian-Australian region’ (Metcalfe 2001, Morley 2002), the ‘Malay archipelago’ (Wallace 1860, Hall 2017), ‘Malesia’ (Steenis 1979, Van Welzen et al. 2005,Brummitt et al. 2001), ‘Papuasia’ (Brummitt et al. 2001) and ‘Australasia’ (Heads 2014), based on floristic or political boundaries. Richardson et al. 2012 referred to the floristic exchange as the ‘Malesian Floristic Interchange’, while Crayn et al. 2015 named it the ‘Sunda-Sahul Floristic Exchange’. To adequately describe the geological history of the area and the area likely to be affected by the exchange of flora between the Sunda and Sahul shelves, we herein introduce the term “The Sunda-Sahul Convergence Zone” (SSCZ) to describe the area of focus. This area comprises the entire Sahul shelf (Australia and New Guinea), Wallacea (the Moluccas, Sulawesi, the Philippines and the Lesser Sunda Islands), and the Sunda shelf (Borneo, Sumatra, Java, and mainland Asia to Myanmar) (Fig. 1). Furthermore, we here adopt the term “the Sunda-Sahul floristic exchange” (Crayn et al. 2015), as it most accurately describes the exchange of flora upon the convergence of the two continental shelves.
The SSCZ is thought to harbour a significant proportion of the world’s biodiversity, yet much of this biodiversity remains to be documented. Four of the world’s ‘biodiversity hotspots’ occur in the SSCZ - the Philippines, Sundaland, Wallacea and Southwest Australia (Myers et al. 2000). The SSCZ also contains the ‘major wilderness area’ of New Guinea—an area thought to have a high degree of endemism and diversity but that is not currently considered to be under threat (Mittermeier et al. 1998). However, despite the clear importance of the region and its biodiversity, its flora has never been documented as a whole.
Checklists for some parts of the SSCZ exist, but their completeness, currency and availability differ. Some are in hard copy form in books or journals (e.g. Soepadmo and Wong 1995,Kessler et al. 2002), some are online (e.g. Pelser et al. 2011), and some are unpublished (e.g. Slik 2018). Many are not publicly available or are out of print. The hard copy formats are static and not up-to-date with respect to new taxonomic discoveries or revised taxonomic concepts. The taxonomies used in these lists also often differ, mostly due to their different publication dates, making comparison of taxa between regions difficult.
The flora of the SSCZ must be documented for it to be studied, analysed and conserved. Documentation is also necessary to appreciate the significance of the SSCZ flora on a global scale, and to further our understanding of its ecology and evolution. Therefore, we provide here for the first time a digital, comprehensive, updateable and publicly available dataset of vascular plants for the SSCZ.
Materials and methods
A checklist of the vascular flora of the SSCZ was compiled from 26 sources including flora volumes, published checklists and databases, and unpublished plot data and checklists (Table 1). For areas where these data were inadequate or lacking, they were supplemented with herbarium specimen-based occurrence records from GBIF.
Table 1.
For floras and checklists in hardcopy, scanned copies were converted into plain text with Optical Character Recognition (OCR). Scientific binomial names were extracted from the plain text documents using the Global Names Recognition and Discovery Service v.0.8.5 (Marine Biological Laboratory 2016; http://gnrd.globalnames.org/name_finder). All names were manually checked for accuracy against the original source and corrected as necessary. Species noted to be non-native in floras and checklists were removed.
The taxonomic status of names from each source was checked using the Taxonomic Name Resolution Service v.4.0 (iPlant Collaborative 2019, Boyle et al. 2013; http://tnrs.iplantcollaborative.org/TNRSapp.html). Names were processed in the “Perform Name Resolution” mode allowing partial matches with a minimum threshold of 0.05. Sources selected to check names were Tropicos.org (Missouri Botanical Garden 2019), the Global Compositae Checklist (Flann 2009), the International Legume Database and Information Service (ILDIS 2018), The Plant List (The Plant List 2013) and The PLANTS Database (USDA and NRCS 2019). Tropicos.org was selected as the family classification source as the nomenclature is known to be actively updated and current. All matches were manually inspected for anomalies and corrected where necessary. For synonymised names, the currently accepted name according to the Taxonomic Name Resolution Service v.4.0 was included in the checklist. Names returning the taxonomic status of “No Opinion” were also included; these names are awaiting assessment by name-checking sources, but for our purposes were assumed to be accepted to ensure they were not prematurely excluded from the final list. Phrase names, manuscript names, hybrids and infraspecific taxa were omitted to increase the likelihood that the species included are recognised internationally. All species names were then classified to a major group: Angiosperms, Fern and fern allies and Gymnosperms.
Species from each source were coded according to their country, island group and continental shelf (Fig. 1). Australian species from the Australian Plant Census (APC; Centre for Australian National Biodiversity Research and Council of Heads of Australasian Herbaria 2017) were further coded by their occurrence in the Australian Bioregionalisation Atlas phytogeographic subregions (Ebach et al. 2015). This was done by downloading occurrence data for every species on the APC from GBIF using the rgbif v.1.3.0 package in R (Chamberlain et al. 2019). Occurrence data were cleaned to include only herbarium records from after 1960 with a geospatial coordinate uncertainty of less than 25 km. Geospatial coordinates for each species were then coded into phytogeographic subregion polygons using the speciesgeocodeR package in R (Töpel et al. 2017). Phytogeographic subregion polygons were modified from the study of González-Orozco et al. (2014) and Ebach et al. 2015 to incorporate the administrative boundary of Australia so that offshore islands (e.g. the Torres Strait Islands) were included. Species occurrences in the Australian external territories of Norfolk Island, Australian Antarctic Territory, Heard and McDonald Islands, Coral Sea Islands, Christmas Island, Ashmore and Cartier Islands were excluded. This process was repeated for the Australian Orchidaceae list from (Royal Botanic Gardens, Kew 2019).
Source lists were then merged and duplicates removed. Consistency in family classification was checked.
Checklist of the vascular flora of the SSCZ
The checklist of the vascular flora of the SSCZ (Suppl. material 1) has been stored in the Research Data JCU Tropical Data Hub (DOI: http://dx.doi.org/10.25903/5ea0dd85f8ea9). Updated versions of the checklist can be accessed via www.ath.org.au/australian-tropical-herbarium/datasets.
Analysis
A total of 60,415 species in 5,135 genera and 363 families of vascular plants are recorded in the Sunda-Sahul Convergence Zone. The number of taxa in each island group and continental shelf are summarised in Table 2.
Table 2.
Shelf | Island group | No. species | No. genera | No. families |
Sahul | Australia | 20430 | 2188 | 258 |
New Guinea | 15765 | 2231 | 275 | |
Sahul total | 34229 | 3252 | 310 | |
Wallacea | Lesser Sunda Islands | 1488 | 793 | 169 |
Maluku Islands | 2590 | 1116 | 208 | |
Philippines | 10212 | 2023 | 263 | |
Sulawesi | 3094 | 1188 | 212 | |
Wallacea total | 12802 | 2308 | 272 | |
Sunda | Borneo | 8458 | 1641 | 235 |
Java | 1676 | 837 | 180 | |
Mainland Asia | 17861 | 3189 | 302 | |
Sumatra | 2941 | 1035 | 202 | |
Sunda total | 23331 | 3499 | 309 | |
SSCZ | SSCZ total | 60526 | 5135 | 363 |
Discussion
Here we present the first comprehensive species checklist of native vascular plants for the Sunda-Sahul Convergence Zone, comprising 60,415 species. An estimated 374,000 vascular plant species are known globally (Christenhusz and Byng 2016); thus, our checklist indicates that the SSCZ harbours at least 16.2% of all known vascular plant species. Considering the land area of the SSCZ (c. 12,215,000 km2, c. 8% of the global land area), our estimated diversity for the region is substantially higher than the global average number of species per unit area.
It has long been assumed that the Neotropics are more species-rich than the Southeast Asian tropics. However, our findings suggest that floristic richness in the SSCZ is comparable to that of the Neotropical ecozone (sensu Schultz 2005) which extends from central Mexico to southern Brazil, a latitudinal range similar to that of the SSCZ. Approximately 90,000–110,000 seed plant species are estimated to occur in the Neotropical ecozone (Antonelli and Sanmartín 2011), an average of 0.0062 seed plant species per km2. By comparison, the SSCZ has an average of 0.0047 seed plant species per km2. The average for the whole SSCZ is lowered by the inclusion of Australia, which mostly comprises savannah and arid biomes known to have relatively low floristic richness. Excluding Australia, the SSCZ has 0.0088 vascular plant species per km2, which is slightly higher than the richness of seed plants in the Neotropical ecozone. Similar species richness between the Southeast Asian tropics and Neotropics was also recently reported for tropical tree species by Slik et al. (2015).
The five most species-rich families in the region are Orchidaceae, Fabaceae, Rubiaceae, Myrtaceae and Poaceae (Fig. 2). The most species-rich genera are Bulbophyllum and Dendrobium (Orchidaceae), Acacia (Fabaceae), and Eucalyptus and Syzygium (Myrtaceae). Orchidaceae, Fabaceae and Poaceae are some of the most species-rich plant families on Earth, and thus their predominance in the region is expected. The pattern of the most diverse families in the SSCZ is similar to that of the Amazon; however, the Amazon includes a high number of Melastomataceae species, fewer Proteaceae species and Ericaceae species, and the SSCZ has ten times the number of orchid species than the Amazon (Cardoso et al. 2017). Only one genus - Psychotria (Rubiaceae) - exhibits a similarly high diversity in the Amazon and the SSCZ, reflecting the independent evolutionary histories of these tropical floras.
It must be emphasised that this is a working checklist of vascular plants; the aim was to compile current knowledge of floristic distribution across the region in an objective and systematic way, and to publish it in a digital, updateable format. Some inevitable errors in taxonomy and distribution will be present in the dataset, reflective of errors in the taxonomic backbones used to standardise nomenclature across sources. These will be corrected over time through consultation with group experts and other regional flora projects, and updated versions of the checklists will be released. The number of errors is likely to be small and unlikely to invalidate results of analyses based on this checklist, given the size of the dataset and the diversity and reliability of source lists. The dataset also almost certainly under-represents actual floristic diversity in the region. Many areas within the SSCZ are underexplored, and therefore have a biodiversity that is not accurately documented. This is particularly the case in many parts of Indonesia, New Guinea, Cambodia and Vietnam. Additional taxonomic work is urgently needed to fully understand and refine species boundaries in poorly known groups. This is challenging in an area so geographically and politically diverse, and is particularly important given current and emerging threats to the biodiversity of the region (Myers et al. 2000). Given the digital format of this checklist, the checklist is able to be updated as new discoveries are made and taxonomies are revised. It provides a baseline overview of current knowledge of the regional flora for biodiversity research, which can be built on and refined over time.
The checklist is provided as a resource for scientists studying the biodiversity, evolution, biogeography and ecology of this region. Questions generated from this list include the following:
Which taxa have been exchanged between the Sunda and Sahul shelves?
Is there a difference between functional traits of plants between different islands, and what could be driving this?
Where are the most diverse areas that should be considered for conservation priority?
What are the environmental correlates of variation in floristic composition across the region?
The list of vascular flora of the SSCZ also offers opportunities to build a regional database of plant traits for ecological and evolutionary research. Ultimately, we hope that this checklist will provide a resource to enable researchers to generate and test biogeographic, ecological and evolutionary hypotheses in this globally megadiverse and biogeographically important region.
Supplementary Material
Data type
Species checklist
Brief description
A list of every species of vascular plant in the Sunda-Sahul Convergence Zone, coded by country, island group and continental shelf.
Island group and country codes:
Bor = Borneo (whole island); Bru = Brunei; Cam = Cambodia; IBo = Indonesian Borneo; ING = Indonesian New Guinea; Jav = Java; Lao = Laos; LSI = Lesser Sunda Islands (including Timor); Ind = Indonesia; MAs = Mainland Asia; Mlk = Maluku Islands; Mly = Malaysia; Myn = Myanmar; NGu = New Guinea (whole island); PNG = Papua New Guinea; Tha = Thailand; Vie = Vietnam; Sin = Singapore; SSa = Sabah and Sarawak; Sul = Sulawesi; Sum = Sumatra; Tim = Timor
Continental shelf codes:
Sah = Sahul; Sun = Sunda; Wal = Wallacea
File: oo_377596.xlsx
Acknowledgements
Thank you to John Kress, Ida Lopez, Pieter Pelser, Julie Barcelona, Cam Webb, Sarah Mathews, Shelley James, Mark Hughes, Barry Conn, Atik Retnowati, Vu Antai and Frank Zich for providing access to, or information about, published and unpublished checklists. Thanks to Andrew Thornhill, Carlos Gonzalez-Orozco and Nunzio Knerr for providing Australian phytogeographic region information. We also thank three reviewers for their comments that contributed to the improvement of this manuscript. Elizabeth Joyce is supported by an Australian Government Research Training Program scholarship.
References
- Antonelli Alexandre, Sanmartín Isabel. Why are there so many plant species in the Neotropics? Taxon. 2011;60(2):403–414. doi: 10.1002/tax.602010. [DOI] [Google Scholar]
- Texas Botanical Research Institute of. Atrium biodiversity information system digital flora of New Guinea. http://ng.atrium-biodiversity.org/atrium/index.php
- International Botanic Gardens Conservation. GlobalTreeSearch online database. www.bgci.org/globaltree_search.php
- Boyle Brad, Hopkins Nicole, Lu Zhenyuan, Raygoza Garay Juan Antonio, Mozzherin Dmitry, Rees Tony, Matasci Naim, Narro Martha L., Piel William H., Mckay Sheldon J., Lowry Sonya, Freeland Chris, Peet Robert K., Enquist Brian J. The taxonomic name resolution service: an online tool for automated standardization of plant names. BMC Bioinformatics. 2013;14(1) doi: 10.1186/1471-2105-14-16. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Brummitt Richard Kenneth, Pando Francisco, Hollis S., Brummitt N. A. World geographical scheme for recording plant distributions. International Working Group on Taxonomic Databases for Plant Sciences (TDWG); 2001. [Google Scholar]
- Cardoso Domingos, Särkinen Tiina, Alexander Sara, Amorim André M., Bittrich Volker, Celis Marcela, Daly Douglas C., Fiaschi Pedro, Funk Vicki A., Giacomin Leandro L., Goldenberg Renato, Heiden Gustavo, Iganci João, Kelloff Carol L., Knapp Sandra, Lima Haroldo Cavalcante de, Machado Anderson F. P., Santos Rubens Manoel dos, Mello-Silva Renato, Michelangeli Fabián A., Mitchell John, Moonlight Peter, Moraes Pedro Luís Rodrigues de, Mori Scott A., Nunes Teonildes Sacramento, Pennington Terry D., Pirani José Rubens, Prance Ghillean T., Queiroz Luciano Paganucci de, Rapini Alessandro, Riina Ricarda, Rincon Carlos Alberto Vargas, Roque Nádia, Shimizu Gustavo, Sobral Marcos, Stehmann João Renato, Stevens Warren D., Taylor Charlotte M., Trovó Marcelo, Berg Cássio van den, Werff Henk van der, Viana Pedro Lage, Zartman Charles E., Forzza Rafaela Campostrini. Amazon plant diversity revealed by a taxonomically verified species list. Proceedings of the National Academy of Sciences. 2017;114(40):10695–10700. doi: 10.1073/pnas.1706756114. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Research Centre for Australian National Biodiversity, Herbaria Council of Heads of Australasian. Australian plant census. http://www.chah.gov.au/apc/index.html. [2017-09-19T00:00:00+03:00];
- Chamberlain S., Barve V., McGlinn D. J., Oldoni D., Desmet P., Geffert L., Ram K. rgbif: Interface to the Global Biodiversity Information Facility API. https://CRAN.R-project.org/package=rgbif 2019
- Chayamarit K, Pooma R, Pattharahirantricin N. A checklist of plants in Thailand, Volume I. Office of Natural Resources and Environmental Policy and Planning; Bangkok, Thailand: 2014. [Google Scholar]
- Chong Kwek Yan, Tan Hugh TW, Corlett Richard T. A checklist of the total vascular plant flora of Singapore: native, naturalised and cultivated species. Raffles Museum of Biodiversity Research, National University of Singapore; 2009. 273 [Google Scholar]
- Christenhusz Maarten J. M., Byng James W. The number of known plants species in the world and its annual increase. Phytotaxa. 2016;261(3):201–217. doi: 10.11646/phytotaxa.261.3.1. [DOI] [Google Scholar]
- Conn B. Handbooks of the flora of Papua New Guinea. Melbourne University Press; Carlton, Vic: 1995. [Google Scholar]
- Crayn Darren M., Costion Craig, Harrington Mark G. The Sahul-Sunda floristic exchange: dated molecular phylogenies document Cenozoic intercontinental dispersal dynamics. Journal of Biogeography. 2015;42(1):11–24. doi: 10.1111/jbi.12405. [DOI] [Google Scholar]
- Ebach M. C., González-Orozco C. E., Miller J. T., Murphy D. J. A revised area taxonomy of phytogeographical regions within the Australian Bioregionalisation Atlas. Phytotaxa. 2015;208(4):261–277. doi: 10.11646/phytotaxa.208.4.2. [DOI] [Google Scholar]
- Flann C. Global Compositae Checklist. https://compositae.landcareresearch.co.nz/Default.aspx
- Malaysia Forest Research Institute. Clearing House Mechanism Biological Diversity Database. http://www.chm.frim.gov.my/Bio-Diversity-Databases/Flora-Database.aspx
- GBIF GBIF Occurrence Download — Thailand. 2017 doi: 10.15468/dl.rf4yne. [DOI]
- GBIF Occurrence Download — Borneo. 2017 doi: 10.15468/dl.vlkrvt. [DOI]
- GBIF GBIF Occurrence Download — Lesser Sunda Islands. 2017 doi: 10.15468/dl.rjqthi. [DOI]
- GBIF GBIF Occurrence Download — Sumatra. 2017 doi: 10.15468/dl.nrblxm. [DOI]
- GBIF GBIF Occurrence Download — Java. 2017 doi: 10.15468/dl.zdcv4q. [DOI]
- GBIF GBIF Occurrence Download — Cambodia. 2017 doi: 10.15468/dl.zdcv4q. [DOI]
- GBIF GBIF Occurrence Download — Laos. 2017 doi: 10.15468/dl.xivesd. [DOI]
- GBIF GBIF Occurrence Download — Myanmar. 2017 doi: 10.15468/dl.kcpykx. [DOI]
- GBIF GBIF Occurrence Download — Vietnam. 2017 doi: 10.15468/dl.zdcv4q. [DOI]
- GBIF GBIF Occurrence Download — Maluku Islands. 2017 doi: 10.15468/dl.vopevk. [DOI]
- GBIF GBIF Occurrence Download — Philippines. 2017 doi: 10.15468/dl.axa3bi. [DOI]
- GBIF GBIF Occurrence Download — Sulawesi. 2017 doi: 10.15468/dl.yc7ha0. [DOI]
- GBIF GBIF Occurrence Download — New Guinea. 2017 doi: 10.15468/dl.npegj0. [DOI]
- González-Orozco C. E., Ebach M. C., Laffan S., Thornhill A. H., Knerr Nunzio J., Schmidt-Lebuhn A N., Cargill C. C., Clements Mark, Nagalingum N. S., Mishler B. D., Miller J. T. Quantifying phytogeographical regions of Australia using geospatial turnover in species composition. PLOS One. 2014;9(3):e92558. doi: 10.1371/journal.pone.0092558. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hall Robert. Cenozoic geological and plate tectonic evolution of SE Asia and the SW Pacific: computer-based reconstructions, model and animations. Journal of Asian Earth Sciences. 2002;20(4):353–431. doi: 10.1016/S1367-9120(01)00069-4. [DOI] [Google Scholar]
- Hall ROBERT. Sundaland and Wallacea: geology, plate tectonics and palaeogeography. Biotic evolution and environmental change in Southeast Asia. 2012:32–78. doi: 10.1017/CBO9780511735882.005. [DOI]
- Hall Robert. Southeast Asia: New views of the geology of the Malay Archipelago. Annual Review of Earth and Planetary Sciences. 2017;45(1):331–358. doi: 10.1146/annurev-earth-063016-020633. [DOI] [Google Scholar]
- Heads Michael. Biogeography of Australasia: a molecular analysis. Cambridge University Press; 2014. [Google Scholar]
- Henty E. E. Handbooks of the flora of Papua New Guinea. Melbourne University Press; Carlton, Vic: 1981. [Google Scholar]
- ILDIS International Legume Database and Information Service. http://www.ildis.org/
- Collaborative iPlant. The Taxonomic Name Resolution Service v4.0. http://tnrs.iplantcollaborative.org
- James S. Papua New Guinea Checklist (unpublished) 2017
- Kessler Paul JA, Bos M. M., Sierra Daza S. E. C., Kop A., Willemse L. P. M., Pitopang R., Gradstein S. R. Checklist of woody plants of Sulawesi, Indonesia. Blumea. Supplement. 2002;14(1):1–160. [Google Scholar]
- Kooyman Robert M., Morley Robert J., Crayn Darren M., Joyce Elizabeth M., Rossetto Maurizio, Slik J. W. Ferry, Strijk Joeri S., Su Tao, Yap Jia-Yee S., Wilf Peter. Origins and assembly of Malesian rainforests. Annual Review of Ecology, Evolution, and Systematics. 2019;50:119–143. doi: 10.1146/annurev-ecolsys-110218-024737. [DOI] [Google Scholar]
- Kress W. John, DeFilipps Robert A., Farr Ellen, Kyi Daw Yin Yin. A checklist of the trees, shrubs, herbs, and climbers of Myanmar (Revised from the original works by J. H. Lace, R. Rodger, H. G. Hundley, and U Chit Ko Ko on the "List of trees, shrubs, herbs and principal climbers, etc. recorded from Burma") Contributions from the United States National Herbarium. 2003;45:1–590. [Google Scholar]
- Lohman David J., de Bruyn Mark, Page Timothy, von Rintelen Kristina, Hall Robert, Ng Peter K. L., Shih Hsi-Te, Carvalho Gary R., von Rintelen Thomas. Biogeography of the Indo-Australian Archipelago. Annual Review of Ecology, Evolution, and Systematics. 2011;42(1):205–226. doi: 10.1146/annurev-ecolsys-102710-145001. [DOI] [Google Scholar]
- Laboratory Marine Biological. Global names recognition and discovery service. http://gnrd.globalnames.org/name_finder 2016
- Metcalfe Ian. Palaeozoic and Mesozoic tectonic evolution and biogeography of SE Asia-Australasia. Faunal and floral migrations and evolution in SE Asia-Australasia 2001
- Garden Missouri Botanical. TROPICOS. http://www.tropicos.org
- Mittermeier Russell A., Myers Norman, Thomsen Jorgen B., Da Fonseca Gustavo A. B., Olivieri Silvio. Biodiversity Hotspots and Major Tropical Wilderness Areas: Approaches to Setting Conservation Priorities. Conservation Biology. 1998;12(3):516–520. doi: 10.1046/j.1523-1739.1998.012003516.x. [DOI] [Google Scholar]
- Monk K. A., de Fretes Y., Reksodiharjo-Lilley G. The Ecology of Indonesia: Nusa Tenngarra and Maluku. Periplus Editions; Hong Kong: 1997. [Google Scholar]
- Morley Robert J. Tertiary vegetational history of Southeast Asia, with emphasis on the biogeographical relationships with Australia. Bridging Wallace’s Line: The Environmental and Cultural History and Dynamics of the SE-Asian–Australian Region 2002
- Myers N., Mittermeier R. A., Mittermeier C. G., da Fonseca G. A., Kent J. Biodiversity hotspots for conservation priorities. Nature. 2000;403(6772):853–858. doi: 10.1038/35002501. [DOI] [PubMed] [Google Scholar]
- Newman M., Ketphanh S., Svengsuksa B., Thomas P., Sengdala K., Lamxay V., Armstrong K. A checklist of the vascular plants of Lao PDR. Royal Botanic Garden Edinburgh; Edinburgh, Scotland, UK: 2007. [Google Scholar]
- Pelser P. B., Barcelona J. F., Nickrent D. L. Co's Digital Flora of the Philippines. www.philippineplants.org. [2017-09-17T00:00:00+03:00];
- Richardson James E., Costion Craig, Muellner Alexandra N. Biotic Evolution and Environmental Change in Southeast Asia. Vol. 82. 2012. The Malesian floristic interchange: plant migration patterns across Wallace's Line. [Google Scholar]
- Royal Botanic Gardens Kew. World Checklist of Selected Plant Families. http://wcsp.science.kew.org. [2019-01-07T00:00:00+02:00];
- Schultz Jürgen. The ecozones of the world. Springer; 2005. [DOI] [Google Scholar]
- Slik J. W.F. Southeast Asian Plot Data (unpublished) [2018-08-06T00:00:00+03:00];2018
- Slik J. W.F. Brunei Plant Checklist (unpublished) [2019-09-13T00:00:00+03:00];2019
- Slik J. W. Ferry, Arroyo-Rodríguez Víctor, Aiba Shin-Ichiro, Alvarez-Loayza Patricia, Alves Luciana F., Ashton Peter, Balvanera Patricia, Bastian Meredith L., Bellingham Peter J., Berg Eduardo van den, Bernacci Luis, Bispo Polyanna da Conceição, Blanc Lilian, Böhning-Gaese Katrin, Boeckx Pascal, Bongers Frans, Boyle Brad, Bradford Matt, Brearley Francis Q., Hockemba Mireille Breuer-Ndoundou, Bunyavejchewin Sarayudh, Matos Darley Calderado Leal, Castillo-Santiago Miguel, Catharino Eduardo L. M., Chai Shauna-Lee, Chen Yukai, Colwell Robert K., Chazdon Robin L., Clark Connie, Clark David B., Clark Deborah A., Culmsee Heike, Damas Kipiro, Dattaraja Handanakere S., Dauby Gilles, Davidar Priya, DeWalt Saara J., Doucet Jean-Louis, Duque Alvaro, Durigan Giselda, Eichhorn Karl A. O., Eisenlohr Pedro V., Eler Eduardo, Ewango Corneille, Farwig Nina, Feeley Kenneth J., Ferreira Leandro, Field Richard, Filho Ary T. de Oliveira, Fletcher Christine, Forshed Olle, Franco Geraldo, Fredriksson Gabriella, Gillespie Thomas, Gillet Jean-François, Amarnath Giriraj, Griffith Daniel M., Grogan James, Gunatilleke Nimal, Harris David, Harrison Rhett, Hector Andy, Homeier Jürgen, Imai Nobuo, Itoh Akira, Jansen Patrick A., Joly Carlos A., Jong Bernardus H. J. de, Kartawinata Kuswata, Kearsley Elizabeth, Kelly Daniel L., Kenfack David, Kessler Michael, Kitayama Kanehiro, Kooyman Robert, Larney Eileen, Laumonier Yves, Laurance Susan, Laurance William F., Lawes Michael J., Amaral Ieda Leao do, Letcher Susan G., Lindsell Jeremy, Lu Xinghui, Mansor Asyraf, Marjokorpi Antti, Martin Emanuel H., Meilby Henrik, Melo Felipe P. L., Metcalfe Daniel J., Medjibe Vincent P., Metzger Jean Paul, Millet Jerome, Mohandass D., Montero Juan C., Valeriano Márcio de Morisson, Mugerwa Badru, Nagamasu Hidetoshi, Nilus Reuben, Ochoa-Gaona Susana, Onrizal, Page Navendu, Parolin Pia, Parren Marc, Parthasarathy Narayanaswamy, Paudel Ekananda, Permana Andrea, Piedade Maria T. F., Pitman Nigel C. A., Poorter Lourens, Poulsen Axel D., Poulsen John, Powers Jennifer, Prasad Rama C., Puyravaud Jean-Philippe, Razafimahaimodison Jean-Claude, Reitsma Jan, Santos João Roberto dos, Spironello Wilson Roberto, Romero-Saltos Hugo, Rovero Francesco, Rozak Andes Hamuraby, Ruokolainen Kalle, Rutishauser Ervan, Saiter Felipe, Saner Philippe, Santos Braulio A., Santos Fernanda, Sarker Swapan K., Satdichanh Manichanh, Schmitt Christine B., Schöngart Jochen, Schulze Mark, Suganuma Marcio S., Sheil Douglas, Pinheiro Eduardo da Silva, Sist Plinio, Stevart Tariq, Sukumar Raman, Sun I. -Fang, Sunderland Terry, Suresh H. S., Suzuki Eizi, Tabarelli Marcelo, Tang Jangwei, Targhetta Natália, Theilade Ida, Thomas Duncan W., Tchouto Peguy, Hurtado Johanna, Valencia Renato, Valkenburg Johan L. C. H. van, Do Tran Van, Vasquez Rodolfo, Verbeeck Hans, Adekunle Victor, Vieira Simone A., Webb Campbell O., Whitfeld Timothy, Wich Serge A., Williams John, Wittmann Florian, Wöll Hannsjoerg, Yang Xiaobo, Yao C. Yves Adou, Yap Sandra L., Yoneda Tsuyoshi, Zahawi Rakan A., Zakaria Rahmad, Zang Runguo, Assis Rafael L. de, Luize Bruno Garcia, Venticinque Eduardo M. An estimate of the number of tropical tree species. Proceedings of the National Academy of Sciences. 2015;112(24):7472–7477. doi: 10.1073/pnas.1423147112. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sniderman JM Kale, Jordan Gregory J. Extent and timing of floristic exchange between Australian and Asian rain forests. Journal of Biogeography. 2011;38(8):1445–1455. doi: 10.1111/j.1365-2699.2011.02519.x. [DOI] [Google Scholar]
- Soepadmo E., Wong K. M. Tree flora of Sabah and Sarawak. Sabah Forestry Department, Malaysia, Forest Research Institute Malaysia and Sarawak Forestry Department, Malaysia; Sabah, Malaysia: 1995. [Google Scholar]
- Soepadmo E., Wong K. M., Saw L. G. Tree flora of Sabah and Sarawak. Sabah Forestry Department, Malaysia, Forest Research Institute Malaysia and Sarawak Forestry Department, Malaysia; Sabah, Malaysia: 1996. [Google Scholar]
- Soepadmo E., Saw L. G. Tree flora of Sabah and Sarawak. Sabah Forestry Department, Malaysia, Forest Research Institute Malaysia and Sarawak Forestry Department, Malaysia; Sabah, Malaysia: 2000. [Google Scholar]
- Soepadmo E., Saw L. G., Chung R. C.K. Tree flora of Sabah and Sarawak. Sabah Forestry Department, Malaysia, Forest Research Institute Malaysia and Sarawak Forestry Department, Malaysia; Sabah, Malaysia: 2002. [Google Scholar]
- Soepadmo E., Saw L. G., Chung R. C.K. Tree flora of Sabah and Sarawak. Sabah Forestry Department, Malaysia, Forest Research Institute Malaysia and Sarawak Forestry Department, Malaysia; Sabah, Malaysia: 2004. [Google Scholar]
- Soepadmo E., Saw L. G., Chung R. C.K., Kiew R. Tree flora of Sabah and Sarawak. Sabah Forestry Department, Malaysia, Forest Research Institute Malaysia and Sarawak Forestry Department, Malaysia; Sabah, Malaysia: 2007. [Google Scholar]
- Steenis CGGJ van. Plant-geography of east Malesia. Botanical Journal of the Linnean Society. 1979;79(2):97–178. doi: 10.1111/j.1095-8339.1979.tb01511.x. [DOI] [Google Scholar]
- List The Plant. The Plant List. http://www.theplantlist.org/
- Töpel Mats, Zizka Alexander, Calió Maria Fernanda, Scharn Ruud, Silvestro Daniele, Antonelli Alexandre. SpeciesGeoCoder: Fast categorization of species occurrences for analyses of biodiversity, biogeography, ecology, and evolution. Systematic Biology. 2017;66(2):145–151. doi: 10.1093/sysbio/syw064. [DOI] [PMC free article] [PubMed] [Google Scholar]
- USDA, NRCS The PLANTS Database. http://plants.usda.gov
- Van Welzen Peter, Slik J. W. Ferry, Alahuhta Janne. Plant Diversity and Complexity Patterns: Local, Regional and Global Dimensions. 2005. Plant distribution patterns and plate tectonics in Malesia.
- Wallace Alfred R. On the zoological geography of the Malay Archipelago. Journal of the Proceedings of the Linnean Society of London. Zoology. 1860;4(16):172–184. doi: 10.1111/j.1096-3642.1860.tb00090.x. [DOI] [Google Scholar]
- Womersley J. S. Handbooks of the flora of Papua New Guinea. Melbourne University Press; Carlton, Vic: 1978. [Google Scholar]
- XMalesia XMalesia Biodiversity Database. http://xmalesia.info/index.html. [2019-05-03T00:00:00+03:00];
- Zahirovic Sabin, Matthews Kara J., Flament Nicolas, Müller R. Dietmar, Hill Kevin C., Seton Maria, Gurnis Michael. Tectonic evolution and deep mantle structure of the eastern Tethys since the latest Jurassic. Earth-Science Reviews. 2016;162:293–337. doi: 10.1016/j.earscirev.2016.09.005. [DOI] [Google Scholar]
Associated Data
This section collects any data citations, data availability statements, or supplementary materials included in this article.
Supplementary Materials
Data type
Species checklist
Brief description
A list of every species of vascular plant in the Sunda-Sahul Convergence Zone, coded by country, island group and continental shelf.
Island group and country codes:
Bor = Borneo (whole island); Bru = Brunei; Cam = Cambodia; IBo = Indonesian Borneo; ING = Indonesian New Guinea; Jav = Java; Lao = Laos; LSI = Lesser Sunda Islands (including Timor); Ind = Indonesia; MAs = Mainland Asia; Mlk = Maluku Islands; Mly = Malaysia; Myn = Myanmar; NGu = New Guinea (whole island); PNG = Papua New Guinea; Tha = Thailand; Vie = Vietnam; Sin = Singapore; SSa = Sabah and Sarawak; Sul = Sulawesi; Sum = Sumatra; Tim = Timor
Continental shelf codes:
Sah = Sahul; Sun = Sunda; Wal = Wallacea
File: oo_377596.xlsx