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 How does the loss of species alter ecosystems?
18.05.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

nachricht Excess diesel emissions bring global health & environmental impacts
16.05.2017 | International Institute for Applied Systems Analysis (IIASA)

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: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

Im Focus: Bacteria harness the lotus effect to protect themselves

Biofilms: Researchers find the causes of water-repelling properties

Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

Innovation 4.0: Shaping a humane fourth industrial revolution

17.05.2017 | Event News

 
Latest News

Scientists propose synestia, a new type of planetary object

23.05.2017 | Physics and Astronomy

Zap! Graphene is bad news for bacteria

23.05.2017 | Life Sciences

Medical gamma-ray camera is now palm-sized

23.05.2017 | Medical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>