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Journal articles on the topic 'Sundaland'

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Author: Grafiati

Published: 4 June 2021

Last updated: 28 January 2023

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1

Sarr, A. C., L. Husson, P. Sepulchre, A.-M. Pastier, K. Pedoja, M. Elliot, C. Arias-Ruiz, T. Solihuddin, S. Aribowo, and Susilohadi. "Subsiding Sundaland." Geology 47, no. 2 (January 4, 2019): 119–22. http://dx.doi.org/10.1130/g45629.1.

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2

Parham, Peter R. "Subsiding Sundaland: COMMENT." Geology 47, no. 7 (July 1, 2019): e469-e469. http://dx.doi.org/10.1130/g46294c.1.

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3

Sarr, A. C., L. Husson, P. Sepulchre, A.-M. Pastier, K. Pedoja, M. Elliot, C. Arias-Ruiz, T. Solihuddin, S. Aribowo, and Susilohadi. "Subsiding Sundaland: REPLY." Geology 47, no. 7 (July 1, 2019): e470-e470. http://dx.doi.org/10.1130/g46493y.1.

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4

Metcalfe, Ian. "Tectonic evolution of Sundaland." Bulletin of the Geological Society of Malaysia 63 (June 1, 2017): 27–60. http://dx.doi.org/10.7186/bgsm63201702.

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5

Grismer, L. Lee, Nikolay A. Poyarkov, Evan S. H. Quah, Jesse L. Grismer, and Perry L. Wood Jr. "The biogeography of bent-toed geckos, Cyrtodactylus (Squamata: Gekkonidae)." PeerJ 10 (March 22, 2022): e13153. http://dx.doi.org/10.7717/peerj.13153.

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The gekkonid genus Cyrtodactylus is the third largest vertebrate genus on the planet with well over 300 species that range across at least eight biogeographic regions from South Asia to Melanesia. The ecological and morphological plasticity within the genus, has contributed to its ability to disperse across ephemeral seaways, river systems, basins, land bridges, and mountain ranges—followed by in situ diversification within specific geographic areas. Ancestral ranges were reconstructed on a mitochondrial phylogeny with 346 described and undescribed species from which it was inferred that Cyrtodactylus evolved in a proto-Himalaya region during the early Eocene. From there, it dispersed to what is currently Indoburma and Indochina during the mid-Eocene—the latter becoming the first major center of origin for the remainder of the genus that seeded dispersals to the Indian subcontinent, Papua, and Sundaland. Sundaland became a second major center of radiation during the Oligocene and gave rise to a large number of species that radiated further within Sundaland and dispersed to Wallacea, the Philippines, and back to Indochina. One Papuan lineage dispersed west to recolonize and radiate in Sundaland. Currently, Indochina and Sundaland still harbor the vast majority of species of Cyrtodactylus.

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6

Nisa, Nisfia Rakhmatun, Berry Juliandi, Rika Raffiudin, Jauharlina Jauharlina, Mahardika Gama Pradana, Araz Meilin, Jasmi Jasmi, et al. "Intra- and Interspecies Wing Venation Variations of Apis cerana and Apis nigrocincta Species in Indonesia." HAYATI Journal of Biosciences 29, no. 2 (January 26, 2022): 222–33. http://dx.doi.org/10.4308/hjb.29.2.222-233.

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Apis cerana has a wide distribution in Asia, including Sundaland, and is currently found in Wallacea, while the sister species, A. nigrocincta, is native in Sulawesi. The wide geographic distribution and the island isolation led to form morphological differences in the bees. The morph and wing venations are known to have a high genetic inheritance. Therefore, this research aimed to (1) analyze the landmark variation of wing venations of A. cerana from Sundaland and Wallacea, and A. nigrocincta from Sulawesi, (2) determine the relationship between these two bee species. The research was conducted by digitizing 550 wing venations based on nineteen landmarks. Our study on intraspecies showed that A. cerana Sumatra revealed a high variation in bending energy. Overall, the deformation grid of A. cerana from Sundaland has higher displacement than those from Wallacea, meaning higher variations of the Sundaland A. cerana. We found geometric morphometric markers of landmarks 16 and 17 in intraspecies and interspecies bees. Thus, these landmarks known as a cubital index can be used for species identification. The differentiation of interspecies has been shown in the PCA. Apis nigrocincta was separated from the single group of the centroid A. cerana and was supported by the Neighbor-Joining tree.

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7

Hasan, F., D. T. Jones, S. Syaukani, and P. Eggleton. "Termite transects from Buton Island, Sulawesi, have a low diversity compared with Sundaland sites." Journal of Tropical Ecology 37, no. 4 (July 2021): 161–64. http://dx.doi.org/10.1017/s0266467421000146.

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AbstractWe used a standardised transect method to compare lowland forest termite assemblages in Buton Island, Sulawesi, with transects in Sundaland. The four Buton transects were extremely depauperate with species density ranging from 1 to 6 species, which is around 10% of the species density in 11 described Sundaland transects. Soil-feeding species were absent from the Buton transects but represent some 43% of species in the Sundaland transects. The Buton transects have relatively high soil pH (6.7–7.9), which may be associated with depauperate termite assemblages. Most termite genera recorded in Sulawesi are wood nesters that can raft in floating wood, which is probably how they arrived in Sulawesi. The Macrotermitinae (fungus-growers) do not raft and probably flew across serendipitously. Geographic isolation, both on Buton and in Sulawesi more generally, and Buton’s underlying geology causing high soil pH, may account for the near-absence of soil-nesters and soil-feeders, none of which are known to raft.

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8

Kurniawan, Nia, Driyana Rike Ahmadlia, Day Shine Nahari, and Anggun Sausan Firdaus. "Speciation and zoogeography of amphibian in Sundaland." Berkala Penelitian Hayati 21, no. 1 (December 31, 2015): 1–7. http://dx.doi.org/10.23869/bphjbr.21.1.20151.

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9

Kamaludin, A. H., W. A. Wan Aris, T. A. Musa, A. H. Omar, and A. Z. Sha’ameri. "PERFORMANCE OF SITE VELOCITY PREDICTION IN SUNDALAND." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVI-4/W3-2021 (January 10, 2022): 155–60. http://dx.doi.org/10.5194/isprs-archives-xlvi-4-w3-2021-155-2022.

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Abstract. Global Positioning System (GPS) technique has been extensively implemented in determination of crustal deformation globally. With the ability of providing solution up to milimeter (mm) level, this technique has proven to provide a precise estimate of site velocity that represents the actual motion of tectonic plate over a period. Therefore, this study aims to evaluate the site velocity estimation from GPS-derived daily position of station, respective to the global plate motion model and predicted site velocity via Least-Squares Collocation (LSC) method within the tectonically active region of Sundaland. The findings have indicated that stations with precise velocity estimates were consistent with global plate model and predicted velocity, with velocity residuals of 5 mm – 10 mm. However, stations that were severely impacted by continuous earthquake events such as in Sumatra were believed to be induced by the impact with consistently large velocity residuals up to 37 mm. Following the outcomes, this study has provided an insight on the post-seismic decay period plate motion which are induced by continuous tectonic activities respective to modelled plate motion.

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10

Metcalfe, Ian. "Tectonic framework and Phanerozoic evolution of Sundaland." Gondwana Research 19, no. 1 (January 2011): 3–21. http://dx.doi.org/10.1016/j.gr.2010.02.016.

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11

Hirsch, Francis, Punya Charusiri, and Talat Ahmad. "The south and east facades of Sundaland." Gondwana Research 19, no. 1 (January 2011): 1–2. http://dx.doi.org/10.1016/j.gr.2010.06.002.

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12

Lukk, A. A., and V. G. Leonova. "Sundaland: Undeformed Lithospheric Block of Southeast Asia." Izvestiya, Atmospheric and Oceanic Physics 58, no. 7 (December 2022): 756–82. http://dx.doi.org/10.1134/s0001433822070076.

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13

Wiyati, Sri Yuliasih, Rika Raffiudin, and Hari Sutrisno. "The Genetic Diversity of Banana Leaf Roller Erionota Thrax Thrax (Lepidoptera: Hesperiidae) in Indonesia." Journal of Hunan University Natural Sciences 49, no. 3 (March 28, 2022): 251–56. http://dx.doi.org/10.55463/issn.1674-2974.49.3.28.

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Banana leaf roller, Erionota thrax thrax, is an example of plant-insect interaction in a cultivated banana that distributes in Southeast Asia, including Indonesia. This subspecies was determined previously based on the morphological character only. The genetic characteristic based on molecular data and genetic diversity had never been accessed for this important pest. This study aimed to (1) characterize the identity of E. t. thrax based on the Cytochrome C Oxidase Subunit I (COI) gene sequence; (2) explore a genetic variation in haplotype diversity of the COI gene. We reconstructed phylogenetic relationships and determined the entire population's haplotype using MrBayes Version 3.2.6, MEGA X, and DnaSP v5. The Bayesian tree showed that this subspecies consists of two clades, i.e., Sundaland population and Sulawesi population clades. Moreover, there are six haplotypes in the Sundaland population and a single haplotype in the Sulawesi population. The genetic distance within E. t. thrax ranged from 0.002 to 0.008 in the Sundaland population, while that between the two populations ranged from 0.016 to 0.023. The scientific novelty of this study is that the COI gene sequences allow distinguishing the population of E. t. thrax between the Sunda and Wallaceae lines and tracing the origin of the Papuan population based on the similarity of its haplotype.

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14

Keim, Ary Prihardhyanto, Fithrorozi Fithrorozi, Tukul Rameyo Adi, R. Indarjani, Fauzi Akbar, Yudi Amsoni, Ida Farida Hasanah, and Wawan Sujarwo. "Tebat Rasau Geopark: Ethnobiology and Ethnogeology of a Pleistocene River in Belitung, Indonesia." Journal of Tropical Ethnobiology 4, no. 2 (July 22, 2021): 130–49. http://dx.doi.org/10.46359/jte.v4i2.101.

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Belitung is an island on the south eastern coast of Sumatra, Indonesia. Geologically, Belitung is an continental island and during Pleistocene was united with Sumatra and Borneo to form a subcontinent named Sundaland indicated by the existence of an archaic Pleistocene river located in Tebat Rasau in the East Belitung Regency with the presence of Asiatic arowana (Scleropages formosus) and non-poisonous freshwater pufferfish from the genus Pao, which is identified here as resembling Pao hilgendorfii. The existence of these biota strengthening the concept of Sundaland and has put Belitung tributaries closer to mainland Borneo’s river system rather than that of Sumatra’s. Fascinating discoveries found in this current study are the fact that the people of Tebat Rasau acknowledge based on the presence of the Asiatic arowana and non-poisonous pufferfish about the union of Belitung with the mainland Borneo and Sumatra in the past long before the concept of Sundaland itself was formulated and published. This knowledge has put the people of Tebat Rasau more aware on the conservation of the area and fully supports the appointment of the Tebat Rasau vicinity as a National Geopark. The local products have also produced from the vicinity including the well-known herbal tea from the leaves of Pelawan tree (Tristaniopsis merguensis; Myrtaceae) known as “Pelawan Tea”.

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15

Alif, Satrio Muhammad, Muhamad Sofyan Sauri, and Redho Surya Perdana. "Perubahan Kecepatan Subduksi Lempeng Indo-Australia terhadap Lempeng Sundaland akibat Gempa Bumi Samudera Hindia tahun 2016." Jurnal Geosains dan Teknologi 4, no. 3 (November 29, 2021): 159–67. http://dx.doi.org/10.14710/jgt.4.3.2021.159-167.

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Gempa bumi Samudera Hindia terjadi pada tanggal 2 Maret 2016 dengan magnitudo7.8 di sekitar zona subduksi Lempeng Sundaland. Implikasi tektonik dari gempa bumi dengan magnitudo di atas 7 ini diteliti karena implikasi tektonik gempa bumi di Samudera Hindia tahun 2012 sangat besar hingga Pulau Jawa. Penelitian ini bertujuan mendapatkan pengaruh gempa bumi Samudera Hindia tahun 2016 terhadap perubahan kecepatan subduksi. Data yang digunakan adalah data Global Navigation Satellite System (GNSS) kontinu di tujuh stasiun yang berada di Lempeng Indo-Australia dan Lempeng Sundaland. Data diolah dengan perangkat lunak ilmiah untuk mendapat solusi koordinat harian. Pada deret waktu koordinat, dilakukan perhitungan kecepatan degan regresi linier untuk data sebelum gempa bumi dan data setelah gempa bumi. Nilai kecepatan yang diperoleh digunakan untuk perhitungan regangan. Hal yang didapatkan dan dibahas adalah perubahan nilai kecepatan dan regangan, serta membandingkan arah kecepatan stasiun GNSS dengan arah kecepatan dari lempeng terkait. Kecepatan stasiun GNSS yang diperoleh berkisar 18 hingga 70 mm/tahun. Kecepatan stasiun GNSS mengalami penurunan dan regangan mengalami pertambahan nilai pemendekan setelah gempa bumi. Nilai perubahan semakin besar untuk stasiun yang lebih dekat ke Palung Sunda. Stasiun GNSS yang berada di pulau di sebelah barat Pulau Sumatra diduga berada di Blok Sumatra, pecahan dari Lempeng Sundaland.

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16

Bellon, Hervé, René C. Maury, Sutanto, Rubini Soeria-Atmadja, Joseph Cotten, and Mireille Polvé. "65 m.y.-long magmatic activity in Sumatra (Indonesia), from Paleocene to Present." Bulletin de la Société Géologique de France 175, no. 1 (January 1, 2004): 61–72. http://dx.doi.org/10.2113/175.1.61.

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Abstract Sumatra is the largest volcanic island of the Indonesian archipelago. The oblique subduction of the Indian Ocean lithosphere below the Sundaland margin is responsible for the development of a NW-SE trending volcanic arc, the location of which coincides approximately with the Great Sumatran Fault Zone (GSFZ). We present in this paper ca. 80 new 40K-40Ar ages measured on Cenozoic calc-alkaline to shoshonitic magmatic rocks sampled all along this arc from Aceh to Lampung. The results show that magmatic activity started during the Paleocene (ca. 63 Ma) all along the arc, and was more or less permanent until Present. However, its spatial distribution increased at ca. 20 Ma, a feature possibly connected to the development of the Great Sumatran Fault. The position of Plio-Quaternary magmatic rocks is shifted away from the trench by a few tens of kilometres with respect to that of Paleocene to Miocene ones, a feature consistent with a significant tectonic erosion of the Sundaland margin during the Cenozoic. The studied samples display typical subduction-related geochemical signatures. However, we have been unable to identify clear geochemical trends, either spatial or temporal. We suggest that the lack of such regular variations reflects a complex igneous petrogenesis during which the contribution of the Sundaland continental crust overprinted those of the mantle wedge and the subducted slab.

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17

Hutchison, Charles S. "The Eocene unconformity on Southeast and East Sundaland." Bulletin of the Geological Society of Malaysia 32 (November 30, 1992): 69–88. http://dx.doi.org/10.7186/bgsm32199205.

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18

Tjia, H. D. "Meridian-parallel faults and Tertiary basins of Sundaland." Bulletin of the Geological Society of Malaysia 42 (December 30, 1998): 101–18. http://dx.doi.org/10.7186/bgsm42199810.

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19

Martin, Stacey Servito, Yu Wang, Muzli Muzli, and Shengji Wei. "The 1922 Peninsula Malaysia Earthquakes: Rare Intraplate Seismicity within the Sundaland Block in Southeast Asia." Seismological Research Letters 91, no. 5 (May 27, 2020): 2531–45. http://dx.doi.org/10.1785/0220200052.

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Abstract Seismic hazard in the southern Malay Peninsula located within the Sundaland block in Southeast Asia is poorly understood. The paucity of historical earthquakes and low-magnitude instrumented seismicity has led to the assumption that this region is largely aseismic. We question this point of view by reassessing historical seismicity in this region and, in particular, a pair of moderate earthquakes in the 1920s. The first of these struck on 31 January 1922 at ≈9:10 a.m. local time (LT) for which we estimate an intensity magnitude (MI) ≈5.4, and for the second earthquake on 7 February 1922 at ≈12:15 p.m. LT, we estimate MI≈5.0. We also identify at least 34 felt earthquakes between 1803 and 1950 that were potentially local within the Sundaland block. These include a very widely felt shock (or set of shocks) on 26 June 1874 that was felt in parts of Borneo, Java, and Sumatra. The discovery of these earthquakes challenges the tectonic stability of the Malay Peninsula and the stable interior of the Sundaland block. The record of historical seismicity in this region relies heavily on European sources, and we recommend locating and consulting indigenous sources to improve the current understanding of regional seismic hazard. We also underscore the need to evaluate the impact of ground motions from rare local earthquakes on the extant building stock and on transportation infrastructure that are otherwise relatively immune to the long-period effects of distant earthquakes commonly felt in the Malay Peninsula.

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20

Spitsyn, Vitaliy M., and Ivan N. Bolotov. "Barsine podbolotskayae sp. n. from Flores Island, Lesser Sunda Archipelago, Indonesia (Lepidoptera, Erebidae, Arctiinae)." ZooKeys 768 (June 19, 2018): 105–11. http://dx.doi.org/10.3897/zookeys.768.24345.

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HereinBarsinepodbolotskayaesp. n.(Lepidoptera: Erebidae: Arctiinae) is described from Flores Island, Lesser Sunda Archipelago, Indonesia. This local endemic species externally resemblesBarsineexclusaButler, 1877 from Sundaland and the Andaman Islands but differs by marking patterns and male genitalia structure.

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21

Riedel, Alexander. "Nine new species of Trigonopterus Fauvel (Coleoptera, Curculionidae) from Sundaland." ZooKeys 1124 (October 12, 2022): 109–30. http://dx.doi.org/10.3897/zookeys.1124.89318.

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The DNA of Trigonopterus specimens from the Sundaland region stored between ten and 32 years in museums could be used for next-generation sequencing. The availability of their cox1 sequence allowed the description of the following nine new species: Trigonopterus grimmisp. nov., T. johorensissp. nov., T. lambirensissp. nov., T. linauensissp. nov., T. microreticulatus Riedel, Trnka & Wahab sp. nov., T. mulensissp. nov., T. sarawakensissp. nov., T. siamensissp. nov., and T. singaporensissp. nov. The alternative original spelling of the name T. tounensis Narakusumo & Riedel is chosen to prevail over T. tounaensis Narakusumo & Riedel. The new species represent the first country records of Trigonopterus for Brunei, Singapore, and Thailand. Thus, the genus´ known area of distribution in the Sundaland region is significantly extended. A key and a catalogue are provided to the Trigonopterus species from Borneo, W-Malaysia, Singapore, and Thailand.

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22

Lim, Haw Chuan, Fasheng Zou, and Frederick H. Sheldon. "Genetic differentiation in two widespread, open-forest bird species of Southeast Asia (Copsychus saularis and Megalaima haemacephala): Insights from ecological niche modeling." Current Zoology 61, no. 5 (October 1, 2015): 922–34. http://dx.doi.org/10.1093/czoolo/61.5.922.

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Abstract Ecological niche modeling has emerged as an useful tool in the investigation of the phylogeographic histories of species or communities in a region. The high biodiversity (oftentimes cryptic), and complex geography and geological history of Southeast Asia particularly call for multipronged approaches in phylogeographic investigations. Past studies have focused on taxa that are associated with lowland rainforests, which is the dominant natural vegetation type. Here, we combine published phylogenetic data, ecological niche modeling and paleo-climate models to reveal potential drivers of divergence in two open-forest bird species, the oriental magpie-robin Copsychus saularis and Coppersmith barbet Megalaima haemacephala. In spite of broad overlap in current distributions, there are subtle differences in their climatic niches, which result in different responses to past climatic changes. For C. saularis, both Last Glacial Maximum climate models indicated that the entire Sundaland was climatically suitable, while phylogenetic analyses found divergent eastern and western Sundaland lineages. We thus postulate that this genetic divergence was a result of past separations of coastal habitats into eastern and western portions due to the emergence of Sunda shelf as sea-level fell. The current separation of morphological subspecies in Borneo is maintained by low climatic suitability (high annual rainfall) in certain regions. The extirpation of M. haemacephala from Borneo and southern Malay Peninsula might have been driven by unsuitable conditions (high temperature seasonality) in central Sundaland and/or the lack of open woodlands. Our study shows that ecological niche modeling adds a powerful dimension to our attempt to understand lineage evolution in space.

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23

Hakim, Fauzi Sukma Nur, and Rachmad Setijadi. "Karakteristik Batuan Mesozoikum di Daerah Bengkayang : Berdasarkan Kandungan Unsur Anorganik." Jurnal Geologi dan Sumberdaya Mineral 22, no. 1 (April 19, 2021): 59. http://dx.doi.org/10.33332/jgsm.geologi.v22i1.572.

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Pengetahuan tentang kondisi geologi pada umur Mesozoikum mengalami perkembangan yang cukup lambat, karena keterbatasan data geologi yang cukup jarang tersingkap di lapangan. Daerah Bengkayang dan sekitarnya secara tektonik merupakan bagian dari Sundaland. Daerah ini dilalui oleh beberapa struktur geologi, menyebabkan batuan yang berumur Mesozoikum tersingkap ke permukaan. Data meassuring section pada lokasi penelitian menunjukkan adanya perubahan fluktuatif suplai sedimen yang ada di daerah penelitian, dari lingkungan transisi hingga ke laut. Hasil analisis XRF pada umur Trias akhir - Jura, ditemukan kelimpahan unsur Si dan Fe, baru kemudian diikuti dengan unsur Ca dan K, sedangkan pada umur Kapur terjadi penurunan sedikit unsur Si dan Fe, untuk unsur Ca dan K masih relatif sama. Pada umur Kapur Akhir - Oligosen terjadi penurunan kelimpahan unsur Fe, namun terjadi penaikan kelimpahan unsur Si dan C, mengindikasikan suplai sedimen pada umur Trias - Jura berasal dari lingkungan transisi, sedangkan pada umur Kapur suplai sedimen semakin menuju ke arah laut.Katakunci: Mesozoikum, XRF, Sundaland, Bengkayang.

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24

NG, HEOK HEE, and MAURICE KOTTELAT. "The Glyptothorax of Sundaland: a revisionary study (Teleostei: Sisoridae)." Zootaxa 4188, no. 1 (November 8, 2016): 1. http://dx.doi.org/10.11646/zootaxa.4188.1.1.

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25

Yaakop, S., J. P. Duffels, and H. Visser. "The cicada genus Chremistica Stål (Hemiptera: Cicadidae) in Sundaland." Tijdschrift voor Entomologie 148, no. 2 (2005): 247–306. http://dx.doi.org/10.1163/22119434-900000172.

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26

Berschauer, David, and Edward Petuch. "Another Sundaland Relict Cylinder Species from Sumbawa Island, Indonesia." Festivus 54, no. 4 (November 1, 2022): 282–86. http://dx.doi.org/10.54173/f544282.

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A new cone species, Cylinder feliciae, is described from the Saleh Gulf (Teluk Saleh) of Sumbawa, Nusa Tenggara Islands (Lesser Sunda Islands), Indonesia. The new species is morphologically similar to Cylinder gloriamaris (Chemnitz, 1777) from the southwestern Pacific and represents a geographically-isolated relict of a once widespread molluscan fauna that extended all along the coast of the Middle Pleistocene Sundaland Peninsula

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27

Maury, René C., Manuel Pubellier, Claude Rangin, Laurence Wulput, Joseph Cotten, Anne Socquet, Hervé Bellon, Jean-Philippe Guillaud, and Hla Myo Htun. "Quaternary calc-alkaline and alkaline volcanism in an hyper-oblique convergence setting, central Myanmar and western Yunnan." Bulletin de la Société Géologique de France 175, no. 5 (September 1, 2004): 461–72. http://dx.doi.org/10.2113/175.5.461.

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Abstract Quaternary to recent volcanic centres located in Central Myanmar basin and in western Yunnan (Tengchong rift) display contrasted geochemical signatures. Mt. Popa lavas range in composition from calc-alkaline to potassic calc-alkaline and derive from partial melting of a subduction-modified mantle. The Monywa Holocene maars are made up of absarokites thought to result from low degrees of melting of a similar source. The Tengchong rift potassic calc-alkaline andesites and dacites also display typical subduction-related imprints. On the contrary, the geochemical signature of the Singu alkaline mafic basaltic trachyandesites which are offset by the Sagaing Fault suggests that they derive from the melting of deep enriched intraplate-type mantle, similar to the source of common Plio-Quaternary alkali basalts and related rocks from the Sundaland. The origin of this uncommon spatial and temporal magmatic association is connected to an unusual tectonic setting of hyper-oblique convergence. The collision between India and the Sundaland is marked by shear partitioning within Myanmar, a significant part of the right lateral motion being accommodated by the Sagaing Fault. Rapid uprise of high temperature alkaline magmas derived from the melting of enriched Sundaland-type mantle and channelled by Neogene fault planes parallel to the Sagaing Fault led to the emplacement of the Singu lavas. Active subduction of the Gulf of Bengal oceanic lithosphere resulted in the development of a Wadati-Benioff plane located 100 to 140 km beneath Mt. Popa and Monywa. The dehydration of this slab led to metasomatism and subsequent melting of the Central Myanmar mantle wedge, and finally to the emplacement of calc-alkaline and shoshonitic magmas in those volcanoes. The origin of the subduction-related signature of the Tengchong lavas has to be related to an older subduction event.

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28

Liu, Junlai, Xiaoyu Chen, Yuan Tang, Zhijie Song, and Wei Wang. "The Ailao Shan–Red River shear zone revisited: Timing and tectonic implications." GSA Bulletin 132, no. 5-6 (October 23, 2019): 1165–82. http://dx.doi.org/10.1130/b35220.1.

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Abstract Continental strike-slip shear zones that may bear important information about the evolution of convergent tectonics often occur to accommodate plate convergence. When and how shearing along the shear zones responds to plate interactions, however, are often debated. In this study, we investigated the Oligocene–Miocene leucocratic dikes from the Ailao Shan–Red River shear zone, which was active during India-Eurasia plate convergence, to constrain the timing and mechanism of ductile shearing along the shear zone. The dikes are structurally grouped into pre-, syn-, and postkinematic types with respect to ductile shearing. Prekinematic dikes from ca. 41 to 30 Ma have low whole-rock 87Sr/86Sr(i) values (0.707–0.710), generally high εNd(t) values (–3.31∼–7.98), and variable εHf(t) values (–7.9∼+5.7). Their magma sources involved high thermal perturbation inducing partial melting of the lower crust, and contributions from the mantle that were possibly related to extensional collapse of the orogenic belt prior to tectonic extrusion of the Sundaland block. Syn- and postkinematic dikes from ca. 28 to 20 Ma dominantly have high whole-rock 87Sr/86Sr(i) (0.707–0.725) and low εNd(t) (–5.83 to –9.76) values, and either negative or positive zircon εHf(t) values (broadly in the range of –12 to + 7.6) for coeval but separate crustal magma sources. The results imply that major shearing accompanying retrograde metamorphism along the Ailao Shan–Red River shear zone was localized to crustal level. A synthesis of regional structural data suggests that Oligocene–Miocene shearing along the Ailao Shan–Red River shear zone and lateral tectonic extrusion of the Sundaland block proceeded in response to progressive India-Eurasia plate convergence. Distributed and inhomogeneous middle- to lower-crustal flow along the boundaries of and within the Sundaland block occurred during the tectonic extrusion.

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29

DOW, RORY A., CHEE YEN CHOONG, and YONG FOO NG. "Elattoneura mauros sp. nov. (Odonata: Zygoptera: Protoneuridae) from Sarawak, Malaysian Borneo." Zootaxa 2502, no. 1 (June 11, 2010): 65. http://dx.doi.org/10.11646/zootaxa.2502.1.7.

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Five species of Elattoneura Cowley, 1935 have been recorded from Sundaland: E. analis (Selys, 1860), E. aurantiaca (Selys, 1886), E. coomansi Lieftinck, 1937, E. erythromma Lieftinck, 1953 and E. longispina Lieftinck, 1937 (Lieftinck 1954). All of these species occur on the island of Borneo (Orr 2003), but only E. erythromma appears to be endemic to Borneo.

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Inger, Robert F., and Harold K. Voris. "The biogeographical relations of the frogs and snakes of Sundaland." Journal of Biogeography 28, no. 7 (July 7, 2008): 863–91. http://dx.doi.org/10.1046/j.1365-2699.2001.00580.x.

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Pubellier, M., and C. K. Morley. "The basins of Sundaland (SE Asia): Evolution and boundary conditions." Marine and Petroleum Geology 58 (December 2014): 555–78. http://dx.doi.org/10.1016/j.marpetgeo.2013.11.019.

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32

Liew, Kit Kong. "Timing of Cenozoic basin formation in northern Sundaland, Southeast Asia." Bulletin of the Geological Society of Malaysia 37 (July 30, 1995): 231–51. http://dx.doi.org/10.7186/bgsm37199516.

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33

Giam, Xingli, Lian Pin Koh, Heok Hui Tan, Jukka Miettinen, Hugh TW Tan, and Peter KL Ng. "Global extinctions of freshwater fishes follow peatland conversion in Sundaland." Frontiers in Ecology and the Environment 10, no. 9 (September 26, 2012): 465–70. http://dx.doi.org/10.1890/110182.

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34

Dahruddin, Hadi, Arni Sholihah, Tedjo Sukmono, Sopian Sauri, Ujang Nurhaman, Daisy Wowor, Dirk Steinke, and Nicolas Hubert. "Revisiting the Diversity of Barbonymus (Cypriniformes, Cyprinidae) in Sundaland Using DNA-Based Species Delimitation Methods." Diversity 13, no. 7 (June 23, 2021): 283. http://dx.doi.org/10.3390/d13070283.

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Biodiversity hotspots often suffer from a lack of taxonomic knowledge, particularly those in tropical regions. However, accurate taxonomic knowledge is needed to support sustainable management of biodiversity, especially when it is harvested for human sustenance. Sundaland, the biodiversity hotspot encompassing the islands of Java, Sumatra, Borneo, and Peninsular Malaysia, is one of those. With more than 900 species, its freshwater ichthyofauna includes a large number of medium- to large-size species, which are targeted by inland fisheries. Stock assessment requires accurate taxonomy; however, several species groups targeted by inland fisheries are still poorly known. One of those cases is the cyprinid genus Barbonymus. For this study, we assembled a consolidated DNA barcode reference library for Barbonymus spp. of Sundaland, consisting of mined sequences from BOLD, as well as newly generated sequences for hitherto under-sampled islands such as Borneo. A total of 173 sequences were analyzed using several DNA-based species delimitation methods. We unambiguously detected a total of 6 Molecular Operational Taxonomic Units (MOTUs) and were able to resolve several conflicting assignments to the species level. Furthermore, we clarified the identity of MOTUs occurring in Java.

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35

Gathorne-Hardy, F. J., Syaukani, and D. J. G. Inward. "Recovery of termite (Isoptera) assemblage structure from shifting cultivation in Barito Ulu, Kalimantan, Indonesia." Journal of Tropical Ecology 22, no. 5 (July 27, 2006): 605–8. http://dx.doi.org/10.1017/s0266467406003373.

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The lowland rain-forest ecosystem in Sundaland (Borneo, Sumatra, Java, the Malay Peninsula south of 10°N, and associated islands) has been recognized as a biodiversity hotspot (Myers et al. 2000). However, it is suffering from huge amounts of disturbance, and it is predicted that South-East Asia will lose three-quarters of its rain forest by the turn of next century (Sodhi et al. 2004).

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36

Jałoszyński, Paweł. "Four new Australo-Oriental species of Paraneseuthia (Coleoptera: Staphylinidae: Scydmaeninae)." Acta Entomologica Musei Nationalis Pragae 59, no. 2 (December 1, 2019): 491–97. http://dx.doi.org/10.2478/aemnp-2019-0039.

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Abstract Four new species of the eutheiine genus Paraneseuthia Franz, 1986 are described: P. luzonica sp. nov. (the Philippines), P. kaibesariana sp. nov. (Indonesia: Kai Besar Is.), P. tanimbariana sp. nov. (Indonesia: Yamdena Is.), and P. morobensis sp. nov. (Papua New Guinea). Externally, these species share many characters with members of the SE Asian, Sundaland group within the genus. However, male genitalic structures of some of them resemble aedeagi of Australian Paraneseuthia, supporting previous phylogeographic hypotheses that assumed the origins of both north-eastern (Far Russian and Japanese) and south-eastern (Australian and Melanesian) Paraneseuthia from a Sundaland ancestor. The aedeagus of P. morobensis sp. nov. shows intermediary shape and structures between those of P. quadrifoveata Jałoszyński, 2010 of Borneo, Sabah, and that of P. levigata Jałoszyński, 2010 of eastern Papua New Guinea. The aedeagus of P. tanimbariana sp. nov., in turn, shows a striking similarity to that of the northern Australian P. angustifurculata Jałoszyński, 2013 and other species known to occur in Australia. The male genitalia of P. luzonica sp. nov. (the first species discovered in the Philippines), and especially of P. kaibesariana sp. nov., add unique features to the already known, great morphological diversity of the SE Asian members of Paraneseuthia that occupy the presumable evolutionary cradle of this genus.

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Chabangborn, Akkaneewut, Kweku K. A. Yamoah, Sumet Phantuwongraj, and Montri Choowong. "Climate in Sundaland and Asian monsoon variability during the last deglaciation." Quaternary International 479 (June 2018): 141–47. http://dx.doi.org/10.1016/j.quaint.2017.04.017.

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38

DANKITTIPAKUL, PAKAWIN, RUDY JOCQUÉ, and TIPPAWAN SINGTRIPOP. "Five new Mallinella species from the Sundaland of Indonesia (Araneae, Zodariidae)." Zootaxa 2636, no. 1 (October 5, 2010): 21. http://dx.doi.org/10.11646/zootaxa.2636.1.2.

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Five new spider species belonging to the genus Mallinella Strand, 1906 (Araneae, Zodariidae) are described from the Greater Sunda (Sumatra, Borneo, Java) and adjacent smaller islands (Bali, Palau Belitung). These taxa are M. abdita sp. nov. (♂♀, East Kalimantan, Borneo), M. bifida sp. nov. (♂♀, East and South Kalimantan, Borneo), M. insulana sp. nov. (♂, Bali), and M. wiputrai sp. nov. (♂♀, Palau Belitung). Males that were considered by Simon to be conspecific with Storena melanognatha van Hasselt, 1882 prove to belong to an unknown species and here described as Mallinella simoni sp. nov. (♂, Java and Palau Belitung). New collections from Sundaland confirm that the first species is confined to Sumatra whereas M. simoni sp. nov. is hitherto known from Java and Palau Belitung. The known distribution of Mallinella albomaculata Bosmans & Hillyard, 1990, mentioned from Sulawesi, is here extended to the island of Borneo; the internal epigyne structure of this species is described and illustrated for the first time.

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39

Sautter, Benjamin, Manuel Pubellier, Silvia Králiková Schlögl, Liviu Matenco, Paul Andriessen, and Manoj Mathew. "Exhumation of west Sundaland: A record of the path of India?" Earth-Science Reviews 198 (November 2019): 102933. http://dx.doi.org/10.1016/j.earscirev.2019.102933.

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40

Krikken, J., and J. Huijbregts. "Taxonomic diversity of the genus Ochicanthon in Sundaland (Coleoptera: Scarabaeidae: Scarabaeinae)." Tijdschrift voor Entomologie 150, no. 2 (2007): 421–79. http://dx.doi.org/10.1163/22119434-900000241.

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41

Veldsman, stephan, Edward Petuch, and David Berschauer. "Biogeographical Isolation and a Sundaland Relict Cone Shell from Sumbawa Island, Indonesia." Festivus 54, no. 3 (August 1, 2022): 204–13. http://dx.doi.org/10.54173/f543204.

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A new cone species, Cylinder sumbawaensis Verbinnen, 2022, was recently described from the Saleh Gulf (Teluk Saleh) of Sumbawa, Nusa Tenggara Islands (Lesser Sunda Islands), Indonesia. The new species is morphologically very similar to Cylinder bengalensis (Okutani, 1968) from the Gulf of Bengal and Andaman Sea and represents a geographically-isolated relict of a once widespread Indian Ocean-derived molluscan fauna that extended all along the coast of the Middle Pleistocene Sundaland Peninsula.

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42

Sholihah, Arni, Erwan Delrieu-Trottin, Fabien L. Condamine, Daisy Wowor, Lukas Rüber, Laurent Pouyaud, Jean-Francçois Agnèse, and Nicolas Hubert. "Impact of Pleistocene Eustatic Fluctuations on Evolutionary Dynamics in Southeast Asian Biodiversity Hotspots." Systematic Biology 70, no. 5 (February 9, 2021): 940–60. http://dx.doi.org/10.1093/sysbio/syab006.

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Abstract Pleistocene climatic fluctuations (PCF) are frequently highlighted as important evolutionary engines that triggered cycles of biome expansion and contraction. Although there is ample evidence of the impact of PCF on biodiversity of continental biomes, the consequences in insular systems depend on the geology of the islands and the ecology of the taxa inhabiting them. The idiosyncratic aspects of insular systems are exemplified by the islands of the Sunda Shelf in Southeast Asia (Sundaland), where PCF-induced eustatic fluctuations had complex interactions with the geology of the region, resulting in high species diversity and endemism. Emergent land in Southeast Asia varied drastically with sea-level fluctuations during the Pleistocene. Climate-induced fluctuations in sea level caused temporary connections between insular and continental biodiversity hotspots in Southeast Asia. These exposed lands likely had freshwater drainage systems that extended between modern islands: the Paleoriver Hypothesis. Built upon the assumption that aquatic organisms are among the most suitable models to trace ancient river boundaries and fluctuations of landmass coverage, the present study aims to examine the evolutionary consequences of PCF on the dispersal of freshwater biodiversity in Southeast Asia. Time-calibrated phylogenies of DNA-delimited species were inferred for six species-rich freshwater fish genera in Southeast Asia (Clarias, Channa, Glyptothorax, Hemirhamphodon, Dermogenys, Nomorhamphus). The results highlight rampant cryptic diversity and the temporal localization of most speciation events during the Pleistocene, with 88% of speciation events occurring during this period. Diversification analyses indicate that sea-level-dependent diversification models poorly account for species proliferation patterns for all clades excepting Channa. Ancestral area estimations point to Borneo as the most likely origin for most lineages, with two waves of dispersal to Sumatra and Java during the last 5 myr. Speciation events are more frequently associated with boundaries of the paleoriver watersheds, with 60%, than islands boundaries, with 40%. In total, one-third of speciation events are inferred to have occurred within paleorivers on a single island, suggesting that habitat heterogeneity and factors other than allopatry between islands substantially affected diversification of Sundaland fishes. Our results suggest that species proliferation in Sundaland is not wholly reliant on Pleistocene sea-level fluctuations isolating populations on different islands. [Dispersal; diversification; eustatic fluctuations; freshwater fishes; insular systems; Milankovitch cycles; paleoenvironments; vicariance.]

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43

Shcherbakov, E. O. "New genus and species of flower mantids (Insecta: Mantodea: Hymenopodidae) from Vietnam." Proceedings of the Zoological Institute RAS 321, no. 4 (December 25, 2017): 411–24. http://dx.doi.org/10.31610/trudyzin/2017.321.4.411.

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A peculiar new genus and species of the flower mantids (Mantodea, Hymenopodidae) from South-Eastern Vietnam, Parapsychomantis vietnamensis gen. et sp. nov., is described. The new genus belongs to Acromantinae, Acromantini, as indicated by the diagnostic characters of the tribe and its similarity to Rhomantis Giglio-Tos, 1915, Psychomantis Giglio-Tos, 1915 and Oligomantis Giglio-Tos, 1915. It differs from all of the abovementioned genera by the combination of small vertex process, small medial lobes on mesofemora and by dense, irregular cross-veins network on the forewings. The distribution of the morphological characters directly related to crypsis (leg lobes) among members of the tribe is reviewed and illustrated. The genitalia of the new genus are illustrated and described. Comparison with other species of Acromantini with known genitalia shows noticeable differences in shape of structures and level of sclerotization indicating an understudied diversity of this complex in the tribe. The finding presents an interesting biogeographical problem because all morphologically similar genera are restricted to the south of Sundaland area. Possible explanations include insufficiently dense sampling of the adjacent areas, misleading morphology and past biogeographical factors related to the distribution of Sundaland plant communities. A comprehensive revision of the subfamily is necessary to explain the evolution of crypsis characters and biogeographic distribution. We also present a modified key to the genera and species of Acromantini.

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44

GRISMER, L. LEE, NORHAYATI AHMAD, and CHAN KIN ONN. "A new, diminutive, upland Sphenomorphus Fitzinger 1843 (Squamata: Scincidae) from the Belum-Temengor Forest Complex, Peninsular Malaysia." Zootaxa 2312, no. 1 (December 16, 2009): 27–38. http://dx.doi.org/10.11646/zootaxa.2312.1.2.

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A new species of diminutive, upland, forest floor skink, Sphenomorphus temengorensis sp. nov. is described from the Belum-Temengor forest complex in northern Peninsular Malaysia. This species is differentiated from all other 36 Sundaland species of Sphenomorphus on the basis of a unique suite of morphological and color pattern characteristics. This is the first reptile known to be endemic to the Belum-Temengor forest complex and underscores the need for additional field research in this area that is actively being logged.

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45

DOW, RORY A., CHEE YEN CHOONG, and YONG FOO NG. "A review of the genus Amphicnemis in Peninsular Malaysia and Singapore, with descriptions of two new species (Odonata: Zygoptera: Coenagrionidae)." Zootaxa 2605, no. 1 (September 8, 2010): 45. http://dx.doi.org/10.11646/zootaxa.2605.1.3.

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The Amphicnemis species occurring in Peninsular Malaysia and Singapore are reviewed, and two new species are described: A. bebar and A. hoisen (holotype for both: Malaysia, Pahang, Sungai Bebar). Keys to both sexes of all species are provided. A. ecornuta is recorded from Borneo for the first time. A summary of the distributions of the named species of Amphicnemis occurring in Sundaland is given. Four species of Amphicnemis are now known from Peninsular Malaysia and Singapore, and twelve from Borneo.

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46

Mason, Victor C., Kristofer M. Helgen, and William J. Murphy. "Comparative Phylogeography of Forest-Dependent Mammals Reveals Paleo-Forest Corridors throughout Sundaland." Journal of Heredity 110, no. 2 (September 21, 2018): 158–72. http://dx.doi.org/10.1093/jhered/esy046.

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47

Raes, N., L. G. Saw, P. C. van Welzen, and T. Yahara. "Legume diversity as indicator for botanical diversity on Sundaland, South East Asia." South African Journal of Botany 89 (November 2013): 265–72. http://dx.doi.org/10.1016/j.sajb.2013.06.004.

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48

Breitfeld, H. Tim, Robert Hall, Thomson Galin, Margaret A. Forster, and Marcelle K. BouDagher-Fadel. "A Triassic to Cretaceous Sundaland–Pacific subduction margin in West Sarawak, Borneo." Tectonophysics 694 (January 2017): 35–56. http://dx.doi.org/10.1016/j.tecto.2016.11.034.

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49

Duffels, J. P. "The cicada genus Muda Distant (Hemiptera: Cicadidae) from Sundaland: species and relationships." Tijdschrift voor Entomologie 161, no. 3 (September 5, 2018): 131–54. http://dx.doi.org/10.1163/22119434-20192077.

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A diagnosis is provided of the cicada genus Muda Distant, 1897, with descriptions, illustrations and distribution maps for the five species found in Sundaland. Three of these, Muda obtusa (Walker, 1858), M. virguncula (Walker, 1856) and M. tua Duffels, 2004, are redescribed. Muda beccarii (Distant, 1888) and M. concolor Distant, 1897 are junior synonyms of M. virguncula. Abroma tahanensis (Moulton, 1923) is transferred to Muda and redescribed. Muda kinabaluana is described as new to science, and is very peculiar, missing the timbals. An identification key is provided. Characters and taxonomic position of Muda kuroiwae (Matsumura, 1913) from the Ryukyu Islands of southern Japan are discussed. Muda is characterized by two supposed synapomorphies, viz., the mediodorsal carina of the male pygofer and the movable upper pygofer lobes; these characters are also found in species of Katoa. Further comparative study of Muda and Katoa is needed to reveal their relationships.

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50

Duffels, Joannes P. "New genera and species of the tribe Taphurini (Hemiptera, Cicadidae) from Sundaland." Deutsche Entomologische Zeitschrift 58, no. 1 (May 2011): 77–104. http://dx.doi.org/10.1002/mmnd.201100006.

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