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Caves and karst of Thailand
Freshwater brachyuran crabs in the limestone caves of northern and western Thailand were studied. Overall, 65 caves in nine provinces were investigated. The crabs obtained were referred to six species of six genera in two families. A checklist and the distribution of freshwater cave-dwelling crabs in Thailand and Southeast Asia are also provided. In Thailand at least 16 species of 14 genera in two families are recognized. On a broader scale, a total of at least 70 cave-dwelling crab species of 36 genera in three families are recorded in Southeast Asia. The majority are in the family Gecarcinucidae (14 genera, 43 species), followed by the families Potamidae (19 genera, 24 species) and Hymenosomatidae (3 genera, 3 species). The troglofaunal status for each species is also given.
This is the fourth volume of the "Caves of Thailand" series covering the peninsular and southern provinces. This volume completes the series. This volume has over 1,950 caves, rock shelters, stream sinks, resurgences and other sites which may be of speleological interest from the provinces of Chumphon, Krabi, Nakhon Si Thammarat, Narathiwat, Phang Nga, Phattalung, Phetchaburi, Phuket, Prachuap Khiri Khan, Ranong, Ratchaburi, Satun, Songkhla, Surat Thani, Trang and Yala. This 610 page, A4 paperback book also includes an outline of the caving history of the region, 226 surveys and a bibliography with over 760 references. It is available from print-on-demand publisher Lulu at http://www.lulu.com/shop/martin-ellis/the-caves-of-northern-thailand/paperback/product-23404834.html
Work by the Shepton Mallet Caving Club in Thailand continues and this sixth part of an ongoing series of articles gives details and surveys of some of the caves explored by the club since Part 5 was published in April 2018 in SMCC Journal Series 13 No. 7. A total of 27 new cave surveys, from 10 provinces in north-eastern, central, peninsular and southern Thailand are included along with location details and a description. All co-ordinates are on the WGS84 datum. Since the first expedition to Thailand in 2000, the club has surveyed 115.7 km of passage in 277 caves (as of February 2021).
From 9 to 23 February 2020 an international team of twenty-two cavers visited the Doi Angkhang region, Chiang Mai province, northern Thailand exploring and mapping caves. A total of 5,400 m of cave passage was mapped in 14 caves. These caves included the second, fourth and fifth deepest caves in Thailand
Following the 2014 Shepton Mallet Caving Club expedition to the Doi Phuka National park in Nan there were two smaller expeditions to the area in January and February 2015. These trips concentrated on the region between the end of the "Southern Track" and the village of Ban Nam Pua Patthana and many caves were located, including the main resurgence of the Nam Pua river. In February 2016 the fifth Shepton Mallet Caving Club Expedition to Ban Mani Phruk saw 15 cavers in the field for 10 days. The results of these expeditions are reported here.
This bibliography contains 2,681 references and gives details of papers, books, pamphlets, newspaper reports and articles, webpages, magazine articles and unpublished reports on the caves, karst and limestones of Thailand. The references have keywords for subject, province and cave.
The 570 species of fauna that have been recorded from limestone caves in Thailand to 18 August 2020 are catalogued. Details of the caves, where a specific taxa has been recorded, are given and geographical errors in the original taxa descriptions are corrected. For the 265 new taxa, where the holotype was collected from a cave, the specimen collection data and repository are listed. A summary table of the fauna is also given.
Volume 3 of The Caves of Thailand covers the western and central provinces of Chainat, Kamphaeng Phet, Kanchanaburi, Lopburi, Nakhon Pathom, Nakhon Sawan, Phetchabun, Phichit, Phitsanulok, Saraburi, Suphanburi, Tak and Uthai Thani. This region has Thailand's longest cave and many other long and deep caves. Over 1,450 caves, rock shelters, stream sinks, resurgences and other sites of speleological interest are fully detailed, supported by 247 surveys and a bibliography with over 510 references. There is also an outline of the caving history of the region.
Between 12 and 21 February 2018, 16 cavers explored the karst on the western edge of the Thung Salaeng Luang National Park in Noen Maprang, Phitsanulok. They also visited the caves of the Khao Ta Phon Non-hunting Area (also in Noen Maprang) and some caves in south-western Phetchabun. Tham Phra Sai Ngam was extended to a surveyed length of over 3 km and several new caves were found and surveyed. In addition, many leads were investigated and documented. The expedition visited 47 caves and resurgences and surveyed 2.3 km of passage.
The 470 species of fauna that have been recorded from limestone caves in Thailand to 7 April 2018 are catalogued. Details of the caves, where a specific taxa has been recorded, are given and geographical errors in the original taxa descriptions are corrected. For the 209 new taxa, where the holotype was collected from a cave, the specimen collection data and repository are listed. A summary table of the fauna is also given.
Basic scientific observations, including measurements of air and water temperature, oxygen and radon concentrations, from caves in a scientifically poorly known karst area in Umphang District, Western Thailand, are described. The results, which illustrate what can be achieved by a small expedition of non-specialist cavers, provide the first evidence of low oxygen and radon concentrations in Thai caves. The results are discussed in the context of published data from other Thai caves. Cave surveys are also presented.