Sakaerat Environmental Research Station

Nakhon Ratchasima, Thailand

Sakaerat Environmental Research Station

Nakhon Ratchasima, Thailand
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Ruengsawang N.,Rajamangala University of Technology at Krungthep | Sangpradub N.,Khon Kaen University | Artchawakom T.,Sakaerat Environmental Research Station | Pronzato R.,University of Genoa | Manconi R.,University of Sassari
European Journal of Taxonomy | Year: 2017

Umborotula bogorensis (Weber, 1890) is a freshwater sponge species that is recorded occasionally, mainly on islands and peninsulas of Australasia. Less than 10 records with morphological descriptions and illustrations have been published so far, and the most recent record is dated 1978. A list of the few voucher specimens from museum collections is provided here together with the rich unpublished Sasaki collection from Japan, Korea, and Taiwan, recently deposited in a Japanese museum. The present new record from Northeast Thailand enlarges the geographic range of U. bogorensis to the Indochina mainland. A comparison of historical data vs present Thai records is performed by morpho-analysis (SEM) as well as biogeographic, ecological and climatic data. Results show low variability in shape and size of the diagnostic morphotraits in populations scattered over the wide geographic range. Here we also formally accept the new taxonomic status (rank elevation) of the previous suborder Spongillina as a new order Spongillida. The presence of this potentially threatened species in the Sakaerat Biosphere Reserve, together with its possible long-term persistence in the Bogor Botanical Garden, may support its conservation. Only a census of the known, extremely scattered populations will define the status of this species. © 2017, Museum National d’Histoire Naturelle. All rights reserved.

Gorochov A.V.,Russian Academy of Sciences | Dawwrueng P.,Kasetsart University | Artchawakom T.,Sakaerat Environmental Research Station
Zoosystematica Rossica | Year: 2015

A new material on the genera Diaphanogryllacris Karny, 1937 and Gryllacris Audinet-Serville, 1831 from Thailand and Laos is considered. Seven new species and subspecies are described: D. adunca sp. nov.; D. orlovi sp. nov.; D. panitvongi sp. nov.; D. p. boulapha subsp. nov.; D. laeta makbuni subsp. nov.; G. thailandi facemarmiger subsp. nov.; G. longiloba sp. nov. © 2015 Zoological Institute, Russian Academy of Science.

Murata N.,Kyoto University | Murata N.,Tottori University | Ohta S.,Kyoto University | Ishida A.,Japan Forestry and Forest Products Research Institute | And 4 more authors.
Journal of Forest Research | Year: 2012

In several areas in Northeast Thailand, evergreen and deciduous forests coexist under uniform climatic conditions. To identify the factors that determine the distribution of these different forest types, we compared soil depth and soil physical properties between evergreen and deciduous forests, and monitored soil moisture conditions for a year in both forest types at the Sakaerat Environmental Research Station. The soil was significantly deeper under the evergreen forests (mean 97 cm) than under the deciduous forest (mean 64 cm). The soil under the evergreen forests retained much more water throughout the year than the soil under the deciduous forest, and there was also a clear tendency for the evergreen forests to occur in ravine areas, regardless of soil depth. It is possible that the evergreen trees can maintain transpiration during the dry season on thicker soils or in ravine areas, whereas shallower soils cannot provide enough water for these trees to maintain their evapotranspiration during the dry period. From the present study, we showed that soil water availability could be a significant factor determining the distribution of the deciduous and evergreen forests in our catchments. © 2011 The Japanese Forest Society and Springer.

PubMed | Kasetsart University, Kyoto University and Sakaerat Environmental Research Station
Type: Journal Article | Journal: PloS one | Year: 2016

Phyllosphere fungi harbor a tremendous species diversity and play important ecological roles. However, little is known about their distribution patterns within forest ecosystems. We examined how species diversity and community composition of phyllosphere fungi change along a vertical structure in a tropical forest in Thailand. Fungal communities in 144 leaf samples from 19 vertical layers (1.28-34.4 m above ground) of 73 plant individuals (27 species) were investigated by metabarcoding analysis using Ion Torrent sequencing. In total, 1,524 fungal operational taxonomic units (OTUs) were detected among 890,710 reads obtained from the 144 leaf samples. Taxonomically diverse fungi belonging to as many as 24 orders of Ascomycota and 21 orders of Basidiomycota were detected, most of which inhabited limited parts of the lowest layers closest to the forest floor. Species diversity of phyllosphere fungi was the highest in the lowest layers closest to the forest floor, decreased with increasing height, and lowest in the canopy; 742 and 55 fungal OTUs were detected at the lowest and highest layer, respectively. On the layers close to the forest floor, phyllosphere fungal communities were mainly composed of low frequency OTUs and largely differentiated among plant individuals. Conversely, in the canopy, fungal communities consisted of similar OTUs across plant individuals, and as many as 86.1%-92.7% of the OTUs found in the canopy (22 m above ground) were also distributed in the lower layers. Overall, our study showed the variability of phyllosphere fungal communities along the vertical gradient of plant vegetation and environmental conditions, suggesting the significance of biotic and abiotic variation for the species diversity of phyllosphere fungi.

Major T.,Sakaerat Environmental Research Station | Knierim T.,Suranaree University of Technology | Barnes C.,Suranaree University of Technology | Lonsdale G.,Sakaerat Environmental Research Station | And 2 more authors.
Current Herpetology | Year: 2017

Despite being known to exhibit arboreal behaviours, Kaloula pulchra, the banded bullfrog, is generally considered terrestrial in its habits and is well known for burrowing into substrate. Here we report seven observations, between October 2015 and March 2017, which document arboreal behaviors in banded bullfrogs in the Sakaerat Biosphere Reserve, Thailand. Our observations comprise the first record of banded bullfrogs predating invertebrates in an arboreal setting. Our observations of K. pulchra climbing large rain jars and subsequently becoming trapped inside also suggest a cause of death for this species. Additional surveys are needed to determine whether this phenomenon prevails throughout rural Thailand. © 2017 by The Herpetological Society of Japan.

Amber E.D.,Sakaerat Environmental Research Station | Strine C.T.,Suranaree University of Technology | Suwanwaree P.,Suranaree University of Technology | Waengsothorn S.,Sakaerat Environmental Research Station
Current Herpetology | Year: 2017

Although Ahaetulla prasina is typically a cryptic green color, they have also been observed in brown, grey and orange-yellow morphs. We recorded observations of the A. prasina color morphs found in a population within the Sakaerat Biosphere Reserve (SBR), northeastern Thailand, between 2013 and 2017. We did not detect any green or brown morphs, showing that this population is dimorphic between grey (54%) and orange-yellow (46%) adults. We did not discern any geographic separation of the color morphs within this population, and sex did not determine color. We found four juveniles, all with brownish-grey bodies and yellow on their anterior dorsals. We observed one sub-adult, which was solid grey except for yellow on the top of the head. Our results suggest that this population may be genetically isolated due to the rapid development surrounding the SBR. Furthermore, color does not likely have a strong influence on adult fitness within this population. Our juvenile and sub-adult observations may indicate ontogenetic color shifts in this population of A. prasina. We recommend additional investigations into the relationship between color and A. prasina ecology. We further reason that the SBR A. prasina may be a good model population for snake genetic research in developing areas. © 2017 by The Herpetological Society of Japan.

Mroz E.,University of Silesia | Depa L.,Sakaerat Environmental Research Station | Artchawakom T.,Sakaerat Environmental Research Station | Gorczyca J.,University of Silesia
ZooKeys | Year: 2014

A new fern-feeding aphid species, Micromyzus platycerii, collected in Sakaerat Research Station in Thailand, is described. © Ewa Mróz et al.

PubMed | University of Silesia and Sakaerat Environmental Research Station
Type: | Journal: ZooKeys | Year: 2015

A new fern-feeding aphid species, Micromyzusplatycerii, collected in Sakaerat Research Station in Thailand, is described.

Strine C.,Suranaree University of Technology | Silva I.,Sakaerat Environmental Research Station | Nadolski B.,Suranaree University of Technology | Crane M.,Sakaerat Environmental Research Station | And 4 more authors.
Amphibia Reptilia | Year: 2015

Total body size for arboreal vipers is normally biased toward small males and larger females. We evaluated sexual dimorphism in adult and sub-adult Trimeresurus macrops, a small, arboreal green pit viper commonly found in Southeast Asia, but severely understudied. We evaluated morphological characters of 139 adult T. macropsobtained by active and opportunistic searches at Sakaerat Biosphere Reserve in northeast Thailand, from May 2012 to October 2014. We compared 7 external characters including residual index (Ri) and scaled mass index (SMI) between male and female T. macrops. Body length measurements and mass differed between males and females. Females had greater snout-vent length, body mass and head length and width, while males had greater tail lengths. A postocular stripe was always present on males, but never on females. Male head size was negatively correlated with SMI, which may reveal intersexual competition in T. macrops. Sexually dimorphic characters in T. macropsmay have evolved through intraspecific resource partitioning. © 2015 by Koninklijke Brill NV, Leiden, The Netherlands.

Crane M.,Suranaree University of Technology | Oliver K.,Sakaerat Environmental Research Station | Silva I.,Sakaerat Environmental Research Station | Aksornneam A.,Sakaerat Environmental Research Station | And 3 more authors.
Tropical Conservation Science | Year: 2016

Thailand is a world biodiversity hotspot with 176 known snake species. However, anthropogenic influences on snakes associated with growing human populations are poorly understood. Aquatic funnel traps (AFTs) are in widespread use in agricultural areas throughout Thailand, and they have the ability to collect large quantities of by-catch, including snakes. During an on-going study on the human-snake conflict we found, using radio-telemetry, one of our radio-tracked Bungarus candidus (Malayan Krait) individuals dead on 13 October 2015. We had tracked the individual for only 14 days before finding it decapitated 10 m from a villager’s house. Upon interviewing the owner, we discovered that the snake had been found dead in a fishing trap, in a man-made irrigation canal located 65 m southeast from his house. Our observation is the first documented case of incidental mortality among upland-dwelling snakes as a result of aquatic trapping in Thailand, and may have implications throughout Southeast Asia. This report suggests fishing traps may be another source of mortality for snakes in human-dominated landscapes, and that further studies may reveal significant rates of terrestrial by-catch in agricultural canals. © Matt Crane, Katie Oliver, Inês Silva, Akrachai Aksornneam, Taksin Artchawakom and Colin T Strine.

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