Hundreds of dead fish is ‘environmental tragedy’, which ‘local fishermen have never seen before in Malambo, Colombia
Hundreds of fish lay prostrate in the mire Bay, body of water located in the Mesolandia, Malambo, Atlantic district, where more than 120 fishermen are worried because of this environmental tragedy, which affects their main economic activity.
The incident occurred early hours of Saturday morning when the fishing day started.
“We went fishing as we normally do when we begin to see the amount of dead fish floating in the water, they were everywhere,” said Jorge Luis Barrios, local resident who claimed never to have witnessed something.
Officials of the Independent Fishermen’s Association, an organization operating in the area, say the problem stems from lack of oxygenation of the water, which has no movement due to the closing of the placed gates on the island of Civic Involvement, path of municipality of Soledad.
“The Swamp need a pipe that filters the water passage, because otherwise things will get worse and this is a tragedy that November 15 is the last caution the governor (Joseph Segebre) in Fishers Summit,” said Julio Cesar Martinez Asipes member who holds to be waiting for a promised Segebre solution that does not seem to arrive.
Water Bay has not its usual color is greenish substances released by decaying bodies, moreover, the stench is getting stronger and the number of species that come to the surface increases.
“Causes mourn. Dying rays, catfish, croaker, sea bass and other smaller fish, “said Cueto Santander, averaging 20 to 30 fish a day kilos, what represents about 200 thousand pesos per round.
Although you can not calculate the amount of dead fish in Asipes estimated losses close to 20 million pesos, plus the environmental impact is increasing.
As an urgent measure, the inhabitants of Mesolandia request an inspection by the authorities, as each day passes, represents an agony for achieving food.
In that locality about 3,500 people where 90 percent live of fishing live.
Chanute Elks Lodge #806 Loyal Knight Steve Coester said many of the fish that died were carp and drum fish, not desired by fishermen, and many of the bass and crappie likely survived according to KDWPT Regional Fishery Supervisor Shawn Lynott, who Coester met with Friday.
Coester said the lodge was advised that no cleanup was necessary allow the fish to decompose naturally. The dead fish will eventually break down and sink to the bottom.
“There is quite a smell out there, but there isn’t much we can do about that,” Coester said.
On their Facebook page, the Lodge stressed that it is safe to fish and to eat live fish that are caught.
The Lodge will be making a decision on restocking the lake at their meeting tonight.
A representative from KDWPT could not be reached for more information on the science, but an article from Aquatic Consulting of Tempe, Ariz. linked by the Elks Lodge on their Facebook Page explains the process.
According to the article available at aquaticconsulting, oxygen is absorbed by lake water at the surface and produced by algae in the water during daylight hours through photosynthesis, which requires sunlight. Cold water can hold more oxygen than warm water.
Oxygen is used by fish and bacteria for respiration during the day and night. If there is not enough oxygen being produced by photosynthesis to meet the needs of bacteria, a sudden drop in oxygen levels can occur. Bacteria also reproduce faster in warm water.
Because of the need for sunlight and the fact that bacterial consumption of oxygen is a determining factor in oxygen levels, the cloud cover and warmer temperatures in Chanute in the past week are both potential contributing factors.
The Cattle Raisers Federation in the northeastern Bolivian province of Beni reported Thursday that at least 60,000 head of livestock have died due to the cold wave that has beset the Andean nation for a week.
Federation director Carmelo Arteaga said that the situation “is desperate” and added that the sector needs $1 billion to repurchase the cattle that have been lost and to create the conditions to face natural disasters, radio Erbol reported.
Beni, Bolivia’s main beef-producing province, was one of those most affected by serious flooding registered in the country between October and March, when thousands of head of cattle also perished.
Arteaga said that the ranchers were still recovering from the damage caused by the rains, when they were surprised by the low temperatures, which worsened their situation even more.
The cold wave, which has brought low temperatures of minus 16 C (3 F) in some parts of the country, last week resulted in five fatalities due to hypothermia in Bolivia, two of them in the eastern province of Santa Cruz and three in the Andean regions of La Paz and Potosi.
Thousands of dead fish have washed up on the shores of Port Credit over the last three days, alarming some nearby residents.
The small, silvery fish, which are about 15 centimetres long, have been spotted all along the shoreline and at the mouth of rivers.
But though the scene may look like a sure sign of an unfolding ecological disaster, conservationists say it is a natural phenomenon caused by nothing more dangerous than fluctuations in the temperature of Lake Ontario.
The fish is believed to be the alewife, a species that is not native to Lake Ontario.
According to the University of Wisconsin’s Sea Grant Institute website, it is a Atlantic Coast saltwater fish that made its way into the Great Lakes in the late 1940s.
Because the alewife is not well adapted to the freshwater environment in the lakes, it is well known among aquatic biologists for dying off in large numbers, particularly in spring when it moves to shallow waters to mate and is vulnerable to changes in the water temperature.
Jon Clayton, an aquatic biologist with CVC, speculates that high winds over the last few days could have driven colder water from the middle of Lake Ontario to the shore, and the fish couldn’t cope with the rapid cooling.
He believes that people may have noticed the die-off more this year than in the past as a result of the rapidly growing numbers of alewife fish in the lake. Data from the Ontario Ministry of Natural Resources suggest that there are 681 million alewife in Lake Ontario, a number that has more than doubled since 2012.
A popular Love County fishing spot along the Red River has recently become a fish graveyard and is being investigated.
“It’s a sad sight,” says Chad McMillan.
He says he’s been fishing at Tucks Ferry along the Red River for close to 20 years, but this past weekend he saw something he’s never seen before – hundreds of dead fish. He thinks the drought could be to blame.
“Lack of rain. We get a little water, goes into the lake, try to fill the lake back up,” said Mcmillan.
“The Oklahoma Department of Wildlife Conservation and Department of Environmental Quality are down there investigating it today, so, it could be a while before we know, if we ever know,” says Wildlife and Fisheries Consultant Mike Porter with the Noble Foundation.
He says any theories about the cause are just speculation.
“A sign of bacteria, maybe something was dumped in the river, we don’t know. We have no idea,” said Porter.
And Porter says this isn’t the first fish kill investigation along the Red River in recent years.
“There’s been several organizations that have looked in depth at that, and nobody has been able to figure out really what caused it,” said Porter.
He explains that any possible toxins that might’ve killed the fish, may dissipate very quickly making the investigation difficult. But he says there are a few possible and common causes.
“Dissolved oxygen, bacteria, toxins, and then man-made pollutants occasionally get in the water. Those are the three main causes,” said Porter.
McMillan says, for now, he’ll have to take his fishing to another location.
“It was a regular spot. Now we pretty much stick to the lake.”
At noon yesterday, the ink Lake Bridge on the west side of Lake of the ink, the reporter saw hundreds of square meters of the lake on the floating head too big dead fish, ink Hubei shore, bringing together a large number of dead fish have been corrupt. Southerly breeze blowing, the air fills with the stench.
A staff member surnamed Gan Hanyang fish farms introduced, starting in 2012, ink lake had “early retirement” and no longer engage in the use of lake fish farming, also did not specifically put fish, dead fish fry may be slipping through the net at the time.
It is involved in the salvage of dead fish in the lake tube member Master Feng introduced, these days, the number of dead fish in the lake of ink gradually increased, starting yesterday morning, four people have been in their boats uninterrupted salvage of dead fish, and its focus buried. According to Feng master analysis, the increase may be due to dead fish with recent weather Enthusiasm, and the fish itself sick about.
Masses of spider crabs wash ashore, ‘never seen anything like this in 40 years’ in Tasmania, Australia
Local residents have reported the orange crabs, around the size of a human hand, have washed up on Raspins Beach at Orford in recent days.
Recreational Fishing Tasmania’s Don Paton says he would like to get to the bottom of the event.
“Whether there’s some viral infection that might have caught in the ocean or whether it’s a natural phenomenon they actually do at certain times of the year,” he said.
“It’s amazing to me to think that over the last 30 or 40 years, or longer, that I’ve been around looking at the beaches up here most of my life, I’ve never seen a phenomenon like it.”
Marine biologist Karen Gowlett-Holmes says it is likely the shells are washing up after the crabs have mated at sea.
“Spider crabs and most crabs can only mate when the female has just moulted her shell,” she said.
“If you have a look at the shells that wash up, you generally find that it is just the shell, there’s no actual meat inside it.
“The entire shell is moulted, down to the coating over the shell and the eyeballs; if you get hold of the bit that has the eyes, it’s actually empty inside.”
Hundreds of dead carp, mouths agape, are lining the shores of Lake Mendocino, but the cause of the die-off remained a mystery on Tuesday.
“Right now, we’re just in limbo,” said Ryan McClymont, a spokesman with the U.S. Army Corps of Engineers, which manages Lake Mendocino.
The fish were first reported washing ashore on Sunday, McClymont said. State Fish and Wildlife biologists have been asked to investigate the deaths, he said.
Because the victims are nearly all carp, the cause is unlikely to be water that is too warm or insufficient oxygen, he said. Carp are one of the more resilient fish and would not normally be the first to die under those conditions, McClymont said. He said there are diseases that are specific to carp.
The curious event drew Ukiah siblings Eleni, Paola and Chris Rodriguez to the lake on Tuesday. Their mother had told them about the dead fish the day before.
“We didn’t believe her,” said Paola Rodriguez, 17.
Eleni Rodriguez, 19, said she was worried someone had poisoned the fish.
“It’s scary to see all those dead fishes,” said Paola Rodriguez.
McClymont said more should be known about the fish deaths later this week.