Tag Archives: Volume_34

Notes on Dendrobium elliotianum O’Byrne (Orchidaceae), a poorly know orchid from Thailand

The occurrence of Dendrobium elliotianum O’Byrne in Thailand represents the first reporting of this species. The Dendrobium elliotianum O’Byrne, a poorly known orchid, was newly discovered in northern (and southwestern) Thailand. It was previously known from cultivated plants. It is similar to D. gregulus Seidenf.and D. garrettii Seidenf and it is here suspected that it has frequently been mistaken for ... Read More »

Population Density and Morphometry Analysis for Sex Determination in Varanus salvator from Bangkachao, Samutprakran Province

The study investigated the population density and morphometric analysis for sex determination of the water monitor (Varanus salvator) in Bagkachao, Prapadaeng, Samutprakran province, using mark capture-recapture during January 2012 to December 2012. Twenty six live-traps were placed every month (286 trap-days in total) and each reptile was tagged with a passive integrated transponder (PIT tag). Forty one lizards were recaptured ... Read More »

Tree Distribution across the Forest Ecotone of Lower Montane Forest at Doi Sutep-Pui National Park, Chiang Mai Province

A study of the tree distribution across the forest ecotone of lower montane forest (LMF) was carried out at Doi Sutep-Pui National Park, Chiang Mai province during 2014. The objectives aimed to clarify the species composition and determine environmental factors for coexisting tree species. A permanent transect plot, 30 × 600 m, was established from 900 to 1,100 m above ... Read More »

Variations in Plant Diversity and Carbon Storage among Subtype Communities in a Dry Dipterocarp Community Forest of Mae Tha Sub-district, Mae On District, Chiang Mai Province

Variations in plant diversity and carbon storage among subtype communities in a dry dipterocarp forest were investigated in the Mae Tha sub-district community forest, Mae On district, Chiang Mai province, in 2014. Fifteen sample plots, each 40 x 40 m, were used for vegetation survey and arranged randomly over the forest. Plant data in these plots were collected by measuring ... Read More »

Spatial Biomass Variation, Biomass Dynamics and Species Diversity in Relation to Topographic Factors of Lower Tropical Montane Forest

Forest biomass and biomass dynamics were used in this study of forest structure and environmental assessment as one of the most important criteria in order to understand forest ecosystem status and forest equilibrium. This research approach evaluated the effects of topographic indices consisting of elevation, slope aspect, slope inclination and index of convexity (IC) on the live-tree, aboveground biomass (AGB), ... Read More »

Analysis of phylogenetic relationship between sacred lotus and woody plants using nucleotide sequences of rbcL and its adjacent genes

Sacred lotus (Nelumbo nucifera Gaertn.) was morphologically considered the same family of water lilies, Nymphaeaceae, in spite of its difference in palynology and floral development. The further investigation genetic variation was to determine different in polymorphism. The chloroplast rbcL and adjacent genes were selected from three wild-type Thai lotus cultivars, Klong Yong (KY), Nong Nan (NH) and Rachine (RC). The ... Read More »

Soil Characteristics and Carbon Storage in Forest Soil of Mae Ya Noi Community Forest, Chom Thong District, Chiang Mai Province

Soil characteristics and carbon storage were studied in the forest soils of Ban Mae Ya Noi community forest, Chom Thong district, Chiang Mai province. Twelve plots (40×40 m) were selected using stratified random sampling along the latitudinal gradient. One soil pit was made in each plot and soil samples were collected down the profile for analysis of physical and chemical ... Read More »

Effect of land use on water quality: A case study in Trang Watershed

The existing condition and factors affecting the DO and BOD level in the Trang watershed were studied. The results indicated that the most dominant land use type was agriculture(73%). From 2003 to 2010, the area classified as urban, industry, water body and other increased, indicating urban expansion, while agricultural land decreased and was possibly converted to urban or other land. ... Read More »

Variations in volatile oil quantity and chemical composition of Litsea cubeba (Lour.) Pers. from northern Thailand

Litsea cubeba (Lour.) Pers. is known as an aromatherapy plant. Volatile oil from fruit has been used commercially as a citral source. Based on the capacity of the volatile oil fraction and chemical isolate conversion into products for the flavor and fragrance industries, the United States, Western European countries and Japan are the major global importers. This study evaluated the ... Read More »

Diversity and Foraging Behavior of Dipteran Pollinators of Physic nut (Jatropha curcas L.) in Thailand

Insect pollinators increase fruit and seed setting of Jatropha curcas L. Therefore, it is important to understand the diversity of fly species as pollinators and their pollination effectiveness. This study was performed at 19 locations in 5 regions of Thailand from March 2012 to May 2014. In total, 491 individual flies were identified belonging to 30 species, 22 genera and ... Read More »