Sunday, May 8, 2016

Fish culture in reservoir in recent mass deaths



Fish culture in reservoir in recent mass deaths

 "Our fish are dead! "Yesterday morning, the daizhihua rush to call this report reflect the situation. In April 2010, he by way of loan, raised 500,000 yuan in mojiang Township-SI-South River station started using cage culture of fish in the reservoir area. "My family's fish, is the 20th began dying. "Last August, daizhihua just keeps 25 boxes of fish, each more than more than 4,000, each end has 4 public over more than two and these fish for tilapia, and also some catfish, freshwater great white shark, if accidents do not occur, the fish close to million of income. Since its 20th discovery of dead fish, tilapia had died twenty or thirty tons of daizhihua, including other fishes, a total of forty or fifty tons. Suffer calamity like a daizhihua, he said that there are also forty or fifty farmers, estimated five hundred or six hundred tons of fish died. "The situation is very serious, we have reflected to the Township and County on the situation. "Daizhihua said. Daizhihua said that two years ago found that hypoxic death of the fish, but nothing so serious this time of the year. In his view, the high watermark, and fish is not easy to hypoxia, but since the last few days, because more water for power generation in the reservoir area, compared to the level in previous years this period down three or four metres, sharp decline in the water level, caused the death of fish hypoxia. Experts say the water level drop of death of fish induced by hypoxia In charge of fisheries Deputy Mayor Zhou xiaocong believes that the drought this year, reservoir was less, combined with the impoundment of the sinanjiang hydropower station is the power, in the absence of water, or water power than less, declining water level in the reservoir area will be relatively fast. At present, the SI river water level in reservoir area of hydropower station in the South, compared to previous years the highest time period had declined by more than 20 meters. He said: "the water level drop too quickly, fish easier to hypoxia. ” Said Zhou xiaocong, SI South River hydropower station reservoir area more than fish cages to more than 2,600, at present, farmed fish were found dead downstream of the dam, upstream of the current most serious, as to the specific cause of fish mortality, "is also being investigated, more serious disasters, rural communities and come up with conclusions, had been reported in the County, asking them to come forward to solve. ” Fisheries technical extension station in Yunnan province through investigation that the expert group, resulting in fish cage culture of cause of death, tentatively identified as the water level is too low, the water level dropped too fast causing partial oxygen, current trends in disasters has continued to spread downstream. Government to take urgent measures to reduce losses Yesterday evening, mojiang County party Committee's propaganda Department issued a disaster communications, said in the text, starting from May 20, SI-South River hydropower station reservoir area ecological cage culture of Tilapia, more dead fish, as of yesterday, 14:30, 767 cages were 45 farmers dead fish 854.4 tons of 2.924 million FRY death and economic loss is expected to reach 9.1288 million Yuan. Mojiang County, and County Government currently started following emergency relief measures, a is organization farming households to downstream Sham Shui Po District drag cage; II is requirements farming households prepared aerators, unified to farming households issued increased oxygen powder 2000 bag, improve water with oxygen volume; three is active coordination fillets factory, full do production processing, reached full load running; four is coordination contact SI nanjiang hydropower station adjustable reduction generating capacity, control water level declined speed; five is organization personnel on died fish for salvage, do harmless of processing, and on water for disinfection ; Six organizations province are fisheries technical extension station group of experts to the affected investigations; seven is an idea for farmers affected by grooming and early preparations for the next round to resume production. Daizhihua confirmed that the dead fish, 3 cents per kg, according to the Government's price recovery was harmless treatment. Negotiating suspended power generation of hydropower station rehabilitation Yesterday, the sinanjiang hydropower station reporter, a staff member of the Office confirmed in a telephone interview, yesterday evening in hydropower station has been suspended power generation. "Every generation before the flood. "He said, reservoir hydropower station Canal, villagers fish in the reservoir area is determined by the Government and signed the contract of hydropower stations, villagers do not need to pay. According to the agreement, 860 m-900 m water level fluctuating between normal changes, but daily fluctuations should not be more than 5 meters, over to inform the mojiang County. The staff member said, power generation, flood discharge can lead to water level variations, current, water level in the reservoir area was 862.9 meters, only 2.9 meters from the dead 860 meters. Dead water levels mean, at this level, taking water from the reservoir area to generate electricity. But last year the water level went from dead only 2.9 meters of water level of the position, and the water level in the reservoir area in recent days, hydropower stations within the scope of the express. "At first we did not understand farmers fish kill this thing. "The staff member said, later, mojiang County party Committee and Government communication, they informed, at present, hydro power generation have been suspended, when recovery is not yet determined, farmers raised fish mass mortality of rehabilitation also depends on the consultation of the parties - See more at: http://thecelestialconvergence.blogspot.ca/2013/05/mass-fish-die-off-850-tonnes-of-fish.html#sthash.RzFlL0Cn.dpuf