Papers by Suchai Worachananant
งานวจยชนนมวตถประสงคเพอศกษาเกยวกบวธการลดภาระการใชประโยชนในการดานาจากแนว ปะการงโดยการสรางจดดานาใหมเ... more งานวจยชนนมวตถประสงคเพอศกษาเกยวกบวธการลดภาระการใชประโยชนในการดานาจากแนว ปะการงโดยการสรางจดดานาใหมเพอการทองเทยวทย งยน โดยศกษาความแตกตางทางชวภาพของสงมชวตใน แนวปะการง และความพงพอใจของนกดานาตอจดดานาแนวปะการงธรรมชาตและจดดานาทมนษยสรางข น ผล การศกษาพบวาความหลากหลายของสงมชวตและความพงพอใจของนกดานาท งสองบรเวณแตกตางกน โดย ความพงพอใจในการดานาท งสองบรเวณแตกตางกนออกไปตามประสบการณการดานา ดงน น การจมเรอจงเปน แนวทางเลอกหน งทจะชวยลดการใชประโยชนจากแนวปะการงธรรมชาต ABSTRACT This study tended to find the effectiveness of man-made dive site to reduce the diving pressure from coral reef for sustainable tourism. The study compared the diversity and satisfaction of divers between natural and man-made dive sites. The result revealed that natural and man-made dives sites had several differences in biological diversity aspect and satisfaction of divers. Wreck preferred divers tended to have higher experience and seeking for exciting and peculiarly dives while reef preferred divers were normally novice and seek for clam and shallow water dives. Accordingly, constructing more man-made dive sites seem to help reduce diving pressure from natural reefs. Keyword: coral reef, man-made dive sites, SCUBA diving, sustainable tourism, wreck e-mail address: [email protected]
Journal of survey in fisheries sciences, Oct 1, 2020
Seahorse is found worldwide in marine habitats such as the seagrass beds, coral reefs, mangroves ... more Seahorse is found worldwide in marine habitats such as the seagrass beds, coral reefs, mangroves and estuaries. Among all the seahorses, Hippocampus barbouri and H. kuda are the most traded species. In recent year, worldwide attention strongly supports the establishment of seahorse aquaculture as to provide an alternative source of seahorse. However, the main bottleneck in succeeding seahorse aquaculture at the culture of early stage, is the diet. The selection of suitable diet will contribute to the success in the larval rearing of seahorse. In this study the consumption of live food by newborn, juvenile and adult seahorse were investigated. H. barbouri and H. kuda commenced feeding at birth. The used of live food, namely the newly hatched Artemia nauplii was able support the growth and survival of newborn and juvenile seahorses in specific tank systems. The results shows an increasing trend, with average numbers of Artemia nauplii consumed increase as the age and size (height) of seahorse. The minimum numbers of nauplii consumed by H. barbouri and H. kuda at 3 day after birth (DAB) with height 14.24±0.14 mm and 10.71±0.13 mm, were 7 and 5 nauplii per feeding respectively. This study showed that Artemia nauplii can be used as live food for newborn H. barbouri to 28 DAB, while for H. kuda from newborn to 42 DAB. At 90 DAB onwards, the used of adult Artemia instead of nauplii is highly recommended for H. barbouri,
The effect of seasonal and lunar phase on blue swimming crab fishing (Portunus pelagicus, Linnaeu... more The effect of seasonal and lunar phase on blue swimming crab fishing (Portunus pelagicus, Linnaeus, 1758) by crab gill net in Bangphat communities Bangtoey sub-district, Mueang district, Phang-nga province were studies during April 2010 and August 2010. It was found that the average catch rate of crab gill net fisheries in the summer, i.e. in April was 1.769 kg/day/boat, whilst in the rains, in August was 2.237 kg/day/boat.
Sustainability
Microplastic pollution is a common problem in the coastal and marine environment, especially in t... more Microplastic pollution is a common problem in the coastal and marine environment, especially in the transferential process through trophic levels. This study analyzed the characteristics of microplastics in the seawater, sediments, and green mussels (Perna viridis) around Sri Racha Bay, Thailand, during the dry and wet season in 2020. This area is a semi-enclosed bay highly affected by extensive green mussel farms and anthropogenic activities. Qualitative and quantitative analysis of microplastics was undertaken using a stereomicroscope and micro-Fourier transform infrared spectrometer (ATR-μ-FT-IR). During the wet season (July), the average abundance of microplastics was found to be relatively higher in water (2.06 ± 1.78 particles/m3) and sediment (69.35 ± 22.29 items/Kg D.W.) than those found in the dry season (April) (0.85 ± 0.25 items/m3 in water and 48.30 ± 28.17 items/Kg D.W.). Overall, the most abundant microplastic polymers were PE, PP, and poly in water, but PE, nylon, and...
Water, Air, & Soil Pollution
Journal of Fisheries and Environment, 2020
งานวจยชนนมวตถประสงคเพอศกษาเกยวกบวธการลดภาระการใชประโยชนในการดานาจากแนว ปะการงโดยการสรางจดดานาใหมเ... more งานวจยชนนมวตถประสงคเพอศกษาเกยวกบวธการลดภาระการใชประโยชนในการดานาจากแนว ปะการงโดยการสรางจดดานาใหมเพอการทองเทยวทย งยน โดยศกษาความแตกตางทางชวภาพของสงมชวตใน แนวปะการง และความพงพอใจของนกดานาตอจดดานาแนวปะการงธรรมชาตและจดดานาทมนษยสรางข น ผล การศกษาพบวาความหลากหลายของสงมชวตและความพงพอใจของนกดานาท งสองบรเวณแตกตางกน โดย ความพงพอใจในการดานาท งสองบรเวณแตกตางกนออกไปตามประสบการณการดานา ดงน น การจมเรอจงเปน แนวทางเลอกหน งทจะชวยลดการใชประโยชนจากแนวปะการงธรรมชาต ABSTRACT This study tended to find the effectiveness of man-made dive site to reduce the diving pressure from coral reef for sustainable tourism. The study compared the diversity and satisfaction of divers between natural and man-made dive sites. The result revealed that natural and man-made dives sites had several differences in biological diversity aspect and satisfaction of divers. Wreck preferred divers tended to have higher experience and seeking for exciting and peculiarly dives while reef preferred divers were normally novice and seek ...
This research was studied on some heavy metals in sediment around Mattapon Shipwreck, mounted at ... more This research was studied on some heavy metals in sediment around Mattapon Shipwreck, mounted at 22m depth, located in Northeast of Koh Lan, Chonburi Province from 12 stations including the near, middle and outer aspects of each side and one reference point (700 meters from the shore). Sediments were acid digested and analyzed for the following six selected heavy metals: Copper (Cu), Manganese (Mn), Iron (Fe), Cadmium (Cd), Lead (Pb), and Zinc (Zn). The study was conducted 5 times in June, October and December in 2017, March and June in 2018. The results showed that the average amount of Copper was 0.08-0.49 mg/kg, Manganese 28.21-45.18 mg/kg, Iron 609.79-1213.75 mg/kg, Cadmium 0.21-0.70 mg/kg, and Lead 9.08-13.94 mg/kg. The concentrations of theses heavy metals except Manganese were higher than the reference point. However, the concentration of heavy metals were gradually decreased by time. In comparison with other two areas – Banglamung and Maptaphut, the concentration of Lead in...
Kasetsart University Fisheries Research Bulletin, 2017
This study considers the variation of catch methods of wrasses for taxonomic study. Since most wr... more This study considers the variation of catch methods of wrasses for taxonomic study. Since most wrasses live in coral reefs, non-destructive methods are preferred. Four methods of a small spear gun, gill net, scoop net and baited hook were used to collect the fish samples. The gill net was the most successful capture method in terms of specimens and number of individuals caught, followed by the scoop net, baited hook and small spear gun. Given the diversity of sizes caught, the catch was divided into small (4-10cm), medium (11-20 cm) and large (21-100 cm) sizes. The gill net proved to be the most successful capture method for all sizes, while the small spear gun and baited hook were successful only for medium and large fish, respectively. However, the scoop net was suitable for the capture of small and medium sized wrasses, although the quantity and diverity were less than the gill net. Wrasses are usually solitary or occur in pairs, but some form small schools, particularly in the j...
Marine Pollution Bulletin, 2009
Against a backdrop of rising sea temperatures and ocean acidification which pose global threats t... more Against a backdrop of rising sea temperatures and ocean acidification which pose global threats to coral reefs, excess nutrients and turbidity continue to be significant stressors at regional and local scales. Because interventions usually require local data on pollution impacts, we measured ecological responses to sewage discharges in Surin Marine Park, Thailand. Wastewater disposal significantly increased inorganic nutrients and turbidity levels, and this degradation in water quality resulted in substantial ecological shifts in the form of (i) increased macroalgal density and species richness, (ii) lower cover of hard corals, and (iii) significant declines in fish abundance. Thus, the effects of nutrient pollution and turbidity can cascade across several levels of ecological organization to change key properties of the benthos and fish on coral reefs. Maintenance or restoration of ecological reef health requires improved wastewater management and runoff control for reefs to deliver their valuable ecosystems services.
While marine protected areas are a principal means used around the world to conserve marine envir... more While marine protected areas are a principal means used around the world to conserve marine environments, in recent years, the health of Thai marine national parks has decreased due to coral bleaching, illegal fishing and poor tourism management. ...
Journal of Sustainable Tourism, 2008
Coastal Zone Asia …, 2011
This paper analyses the management status of Surin Marine National Park (Surin), the effectivenes... more This paper analyses the management status of Surin Marine National Park (Surin), the effectiveness of existing management strategies, their adaptation to the problems occurring and the results of the adaptations. Surin is situated at the upper part of Andaman Sea, Thailand. Its reputation as the best shallow-water reef in Thailand attracts more than twenty thousand visitors per year who enjoy diving on the eight square kilometres of reef. Visitor management arrangements include a visitor fee, boat permits, specific activities management, a zoning plan and an information centre. In common with many other national parks, Surin faces management issues relating to this use and the capacity to manage it to protect valued resources. The current five year zoning plan is rigid and inflexible and makes it difficult for management to respond to changing circumstances. These problems contribute to concern for the effectiveness of tourism management. In addition, survey of visitor attitudes towards, and knowledge about, management revealed that visitors lack recognition of current management approaches. To address these issues, some changes have been made to management arrangements. A mooring buoy system has been established to better identify use areas and manage the level of use of sites. However, in the absence of a recognized study of the associated impact factors and effect of this decision, this plan may not be entirely successful. While the biogeography of Surin is well known, little is known about the visitors, their expectations or activities. More effective tourism management will require such information and its use to develop strategies to match visitor needs with marine resource characteristics while protecting the resource. Further revision of management approaches is also recommended.
Galaxea, Journal of Coral Reef Studies, 2013
The survival rates of the staghorn coral Acro pora muricata and the branching coral Pocillopora d... more The survival rates of the staghorn coral Acro pora muricata and the branching coral Pocillopora dami cornis were examined using 6 transplantation techniques to evaluate the effectiveness of direct transplantation of coral fragments vs. fragments grown in nurseries before transplantation. (n＝150 fragments per technique). The study was conducted at Sungwan beach, Koh Laan, Pat taya City, Chonburi Province for a period of 33 weeks (September 2009 to May 2010). In A. muricata, the high est survival rate (82.0%) was shown by those fragments which were nursed on the midwater nursery before trans planted on iron plate, followed by those which were di rectly transplanted on iron plate (survival rate of 64.7%), and those nursed on iron fish home nursery before trans planted on iron plate, (survival rate of 59.3%). In P. damicornis, the highest survival rate (72.7%) was shown by those fragments which were nursed on the iron fish home nursery before transplanted on iron plate, followed by those which were nursed on midwater nursery before transplanted on coral ball (survival rate of 64%), and those directly transplanted on coral ball, (survival rate of 46.7%). According to survival rate, budget, time frame and manpower, the most effective method was direct transplantation on iron plate.
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Papers by Suchai Worachananant