Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

PSU finds environmental changes the causes of mussel deaths in Trang

11.05.2010
Prince of Songkla University has studied the death of mussels farmed in Amphoe Kantang, Trang Province and found that it was caused by stress and weaknesses resulted from sudden environmental changes and suggested reducing the number of the mussels and the size of the rafts to sustain the balance of nature.

Faculty of Natural Resources, PSU has learned about the death of farmed mussels in Tambon South Kantang, Amphoe Kangtang, Trang Province where there are 89 mussel farmers. The Faculty studied the cause of the death which had begun since August 18, 2009 and found that the area had increased the number of farmed mussels 2-3 times.

Crowdedness resulted in bad water circulation leading to smaller quantity of nutrients available for each mussel and sudden environmental changes. These, in turn, caused stress and eventually weakness in the mussels. When they died and decayed, the water condition deteriorated and bred more parasites and microbes, causing even more rapid and massive deaths.

Part of the changes has resulted from the decrease of water salinity due to heavy rains in the watersheds. Mussels died most on heavy rainy days beginning from the rafts 3 kilometers before the village. More of those at the top of the sacks died than those at the bottom because the changes at that level were more drastic, i.e., the salinity level changed more quickly than that at a deeper level. There were no reports about the death of white sea bass, however, because they could live in water with ranges of salinity level and so not affected. The rain wash also incurred various colored sediments, becoming a problem to mussels which feed by filtering though they have mechanisms to manage suspended sediments.

The study team has made suggestions to mussel farmers as follows. Mussel farming relies on natural settings so farmers should consider the capability of the system in catering for it. This means the management of natural environment to make it sustainable, balanced and undisturbed so as not to incur any phenomenon that has never occurred before. In this case, the farmers will have to reduce the number and the size of the mussel rafts as well as not to make the mussel sacks too overcrowded in each raft.

Mitchai Chongcheawchamnan | Research asia research news
Further information:
http://www.psu.ac.th/en/node/1425
http://www.researchsea.com

Further reports about: Amphoe PSU Trang environmental change heavy rain mussel mussel farmers

More articles from Ecology, The Environment and Conservation:

nachricht Making Oceans Plastic Free - Project tackles the problem of plastic pollution in the oceans
31.05.2017 | Leibniz-Zentrum für Marine Tropenforschung (ZMT)

nachricht Nitrogen Oxides Emissions: Traffic Dramatically Underestimated as Major Polluter
31.05.2017 | Universität Innsbruck

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

Im Focus: Optoelectronic Inline Measurement – Accurate to the Nanometer

Germany counts high-precision manufacturing processes among its advantages as a location. It’s not just the aerospace and automotive industries that require almost waste-free, high-precision manufacturing to provide an efficient way of testing the shape and orientation tolerances of products. Since current inline measurement technology not yet provides the required accuracy, the Fraunhofer Institute for Laser Technology ILT is collaborating with four renowned industry partners in the INSPIRE project to develop inline sensors with a new accuracy class. Funded by the German Federal Ministry of Education and Research (BMBF), the project is scheduled to run until the end of 2019.

New Manufacturing Technologies for New Products

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

A rhodium-based catalyst for making organosilicon using less precious metal

22.06.2017 | Materials Sciences

New 3-D display takes the eye fatigue out of virtual reality

22.06.2017 | Information Technology

New technique makes brain scans better

22.06.2017 | Medical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>