Journal Issue: EnNRJ Vol. 13 No. 1
1
Issued Date
2015
Resource Type
Language
tha
eng
eng
File Type
application/pdf
Access Rights
open access
Rights
ผลงานนี้เป็นลิขสิทธิ์ของมหาวิทยาลัยมหิดล ขอสงวนไว้สำหรับเพื่อการศึกษาเท่านั้น ต้องอ้างอิงแหล่งที่มา ห้ามดัดแปลงเนื้อหา และห้ามนำไปใช้เพื่อการค้า
Rights Holder(s)
Faculty of Environment and Resource Studies Mahidol University
Journal Volume
EnNRJ Volume 13
(2015)
Articles
Effects of climate variability on monthly growth of Aglaia Odoratissima and Hydnocarpus Ilicifolia at the Sakaerat Environmental Research Station (SERS), Northeastern Thailand
(2015) Kritsadapan Palakit; Khwanchai Duangsathaporn; Somkid Siripatanadilok; Pichit Lumyai; Kritsadapan Palakit; Mahidol University. Faculty of Environment and Natural Resource Studies
The research objective was to investigate effects of climate variability on monthly growth of
Aglaia odoratissima and Hydnocarpus ilicifolia which are the dominant tree species in lower canopies of
dry evergreen forest and generally found at the Sakaerat Environmental Research Station (SERS),
northeastern Thailand. For one year of the investigation, monthly data of tree leaf phenology, inside bark
diameter (IBD) and outside bark diameter (OBD) increments were examined. These data were related to
soil moisture content and climatic data of monthly rainfall, temperature and relative humidity. The results
showed that leaf phenology of A. odoratissima and H. ilicifolia illustrated leaf maturation throughout the
year, while young leaves were abundant in the rainy season and leaf abscission was rarely found
throughout the year. The IBD increments of these species on transverse surfaces could be detected
throughout the year and the most rapid increments were detected in the rainy season, while OBD
increments of both species shrank in the dry season and swelled in the rainy season. Using path analysis
(PA), climate variability was found to be significantly related to leaf phenology of A. odoratissima and
IBD increments of H. ilicifolia; and it was also significantly related to OBD increments of both species.
Forest habitat and fruit availability of hornbills in Salakphra Wildlife Sanctuary, Kanchanaburi Province, Thailand
(2015) Hata, Hiroki; Vijak Chimchome; Jongdee To-im; Jongdee To-im; Mahidol University. Faculty of Environment and Natural Resource Studies
This study aimed to examine the quality of hornbill habitat in terms of tree and fruit availability
in mixed deciduous forests, Kanchanaburi Province, Thailand. Salakphra Wildlife Sanctuary (SLP) has
been known as a mixed deciduous forest, which has been disturbed by human activities. All canopy trees
with a breast height diameter (DBH) ≥ 10 cm within the ten belt-transects of 2,000 m X 20 m (a total of
40 hectares) were monitored monthly. A total of 30 tree families including 81 species were observed on
the belt-transects and the dominant species were non-hornbill fruit species. As hornbills needs emergent
tree for nesting, trees with DBH size ≥ 40 cm were regarded as a potential nest tree and 37.78 % of trees
were found in SLP. The abundance of preferred nest tree species (families Dipterocarpaceae, Myrtaceae
and Datiscaceae) were 12.14%. The density of Ficus spp., which is regarded as the most important food
source for hornbill, is 0.55 trees / ha in SLP. The Fruit Availability Index (FAI) of all fruit species during
the breeding season is 23.49 % while the FAI of hornbill fruit species is 58.88 %. Furthermore, in
addition to this study, a pair of Great hornbills was observed during the breeding season and the male
abandoned the nest to feed the mate prior to the expected hatching period. A pair of great hornbills was
observed during the breeding season in SLP and the male would only leave the nest to find and retrieve
food for the female mate prior to the expected hatching period. The average estimated number of food
items fed to the female mate was 220 food items during the period from March (n = 3) to 13 food items in
April 2014 (n = 4). The reduction in the availability of food items may be considered as one of the factors
that affect the success or failure of producing offspring.
Ecotopia 2121: Car-freeCities of the 22nd Century
(2015) Marshall, Alan; Mahidol University. Faculty of Social Sciences and Humanities
The long-term futures of five cities from around the planet are outlined with the use of one
visual image for each city. These cities are : Abu Dhabi(UAE), Denver(USA), Sao Paulo(Brazil), San
Diego(USA), and Perth(Australia). These city’s futures are presented in ‘eco-utopian’ terms in
which each city studied is proffered to operate within some sort of planned (or naturally-achieved)
peaceful, happy and communally-desirable setting that exists in socio-ecological harmony (that is,
harmony between society, people, and the environment). The central common feature investigated
for all these cities of the future are their ‘car-free’ or ‘car-less’ character. In the spirit of previous
idealistic imaginings by writers and artists that have worked on formulating utopias in decades and
centuries past, some explanation about how each city can get to this eco-utopian status(by the year
2121AD) is declared, along with an explanation about the social, technical, and economic
background that may be present then and there.
Tourism threats to Coral Reef Resilience at Koh Sak, Pattaya Bay
(2015-01) Phillips, Wayne N.; Mahidol University. Mahidol University International College
Coral reefs provide many ecosystem goods and services and rising atmospheric greenhouse gas
concentrations are resulting in higher than normal sea surface temperatures (SSTs), increasing the
frequency and extent of mass coral bleaching and mortality. The loss of corals after bleaching events is
often followed by changes in the reef community and the proliferation of macroalgae, especially in reefs
experiencing tourism and fishing. This change, however, is less likely in reefs experiencing fewer
negative impacts. Using a mixed methods approach to data collection we used boat-traffic surveys, coral
reef substrate surveys and self-complete questionnaires and interviews of scuba divers, island visitors and
their tour guides to assess potential tourism impacts to the coral reef at Koh Sak, Pattaya. The number of
tourists, the intensity of boat traffic and poor management of activities at the island impair the structural
and ecological integrity of the reef thereby affecting its ecological and spatial resilience and capacity to
survive global climate change. To improve reef resilience, there needs to be a shift from exploitative
business practices to a conservation-based industry that creates the infrastructure to ensure visitors
participate in activities that help conserve the reef rather than weaken it.
Title
EnNRJ Vol. 13 No. 1
Author's Affiliation
Mahidol University. Faculty of Environment and Resource Studies
มหาวิทยาลัยมหิดล. คณะสิ่งแวดล้อมและทรัพยากรศาสตร์
มหาวิทยาลัยมหิดล. คณะสิ่งแวดล้อมและทรัพยากรศาสตร์
Keyword(s)
Climate change
Biodiversity
Disaster
Ecological
Environmental modelling
Environmental dynamics
Environmental pollution
Emerging contaminants
Transboundary pollution
Waste and wastewater treatments
Hazardous wastes
Natural resource management
Multidisciplinary sciences
Environment and Natural Resources Journal
Biodiversity
Disaster
Ecological
Environmental modelling
Environmental dynamics
Environmental pollution
Emerging contaminants
Transboundary pollution
Waste and wastewater treatments
Hazardous wastes
Natural resource management
Multidisciplinary sciences
Environment and Natural Resources Journal