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Up To One Million Fish Found Dead In Thai River
Bangkok (AFP) Mar 13, 2007 Hundreds of thousands of farmed fish have been found dead in one of Thailand's key rivers, the fisheries department said Tuesday, prompting fears that factories were polluting the waterway. Parts of the central provinces of Ang Thong and Ayutthaya along the Chao Phraya river were officially declared disaster zones Tuesday, after the fish started dying there on Sunday night. Officials said they were still trying to determine what had caused the deaths of up to one million caged tubtim fish, a type of tilapia, at different locations along the river about 100 kilometres (60 miles) north of Bangkok. Jaranthada Karnsasuta, director general of the fisheries department, said a sudden lack of oxygen in the water killed the fish. "Oxygen in water is very poor. Some reported zero to 0.5 percent of oxygen in the water, while fish need more than three percent to survive," he told AFP. He said they were currently investigating two possible explanations -- that a sugar boat which capsized earlier this month released toxic byproducts into the river, or that upstream factories had polluted the waterway. Local villagers and farmers suspect that factories, including one that produces the food additive monosodium glutamate, had released untreated water into the Chao Phraya, which flows down to the capital Bangkok, Jaranthada said. It was less likely to have been caused by the capsized boat, he said, as the accident happened March 3 and the fish would have been affected earlier. The Ministry of Agriculture will compensate fish farmers for their losses, which total about 40 million baht (1.3 million dollars), Jaranthada said. An official in Ang Thong told AFP that the public health ministry had reassured him that the dead fish were not poisonous to humans, but added that they would be buried rather than entering the food chain. Jaranthada said that the quality of water on the affected stretch of the Chao Phraya was improving after the irrigation department released clean water from an upstream dam.
Source: Agence France-Presse Related Links Our Polluted World and Cleaning It Up The latest farming technology and science news Farming Today - Suppliers and Technology
Plant Size Morphs Dramatically as Scientists Tinker with Outer Layer
La Jolla CA (SPX) Mar 12, 2007Jack's magical beans may have produced beanstalks that grew and grew into the sky, but something about normal, run-of-the-mill plants limits their reach upward. For more than a century, scientists have tried to find out which part of the plant both drives and curbs growth: is it a shoot's outer waxy layer? Its inner layer studded with chloroplasts? Or the vascular system that moves nutrients and water? The answer could have great implications for modern agriculture, which desires a modern magical bean or two. |
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