Archive | November 15, 2015
The phenomenon was still occurring midday Thursday, with about 200 fish carcasses scattered around the lake and a dozen fish still pumping their gills near the shoreline.
“What’s unusual about, I would say, is the timing,” said Steve Maricle, senior fish biologist with the fish and wildlife branch.
The lake is a kilometre from the nearest road, making it unlikely that a foreign contaminant or nutrient killed the fish.
“I believe what almost certainly happened was that it experienced a summer kill, which usually isn’t happening so late in the year.”
Winterkill is a more typical phenomenon and Interior lakes have been hit with more of it recently. Maricle said it’s the first report of summer kill in Deep Lake, a well-used, walk-in lake stocked with rainbow and Eastern brook trout on alternating years.
Situated in Lac du Bois Grasslands Protected Area, the lake is about the size of a football field and has no surface water source, only groundwater. Together with a lack of wind within the lake’s sheltered bowl, this can lower oxygen levels in the water.
Last winter Deep Lake underwent a winter kill of its Eastern brook stock before it was restocked with rainbows according to schedule.
“From my knowledge, a Deep Lake summer kill is fairly rare.”
Maricle suspects there fish kill may be the result of warmer than seasonal temperatures and their effect on phytoplankton in the lake. When there is a mass die-off of algae, the decay can consume large amounts of dissolved oxygen from the water.
Typically, summer kills are caused by warm temperatures and explosive algae growth, causing spikes in dissolved oxygen. The oxygen plummets at night and the die-offs occur just before dawn when levels are lowest.
“We’re seeing a lot of different things with climate change,” Maricle said. “Things aren’t what they used to be.”
Typically in mid-fall temperatures don’t climb in the mid and upper teens.
He wasn’t planning to send a crew up to the lake on Friday afternoon due to other priorities.
“We still don’t like to see it,” he added. “If Deep Lake continues, year after year, is there any value to stocking it?”
The branch works with the B.C. Freshwater Fisheries Society in maintaining the fishery in the lake, one popular with people of all ages, especially kids.
“It’s a really good kids lake. It’s kind of out of the way and doesn’t get a lot of pressure.”
Courtesy of newskamloops.com
Thousands of dead fish were spotted in the Bhopal’s Lower Lake, one of two lakes in the Bhoj wetland, which has been designated a wetland of international importance under the international Ramsar Convention, on Saturday morning.
When HT visited the Lower Lake, it found hundreds of dead fish floating in the water. There were heaps of garbage and floating debris with dead fish on the lake fringe, with a foul smell repelling onlookers.
Though it is not yet clear why the fish have started dying, experts say increased pollution due to the recent immersion of hundreds of idols could have a role to play in the mass death.
Environmentalist Praloy Bagchi said most of the idols were made of plaster of Paris and painted with synthetic colours. “When all this makes its way into an already polluted lake, fish are destined to suffocate.
Authorities have failed to ensure an eco-friendly idol immersion and as a society, we need to think whether we should limit or change our traditions in such a way that they don’t harm life and environment around,” he said. “The Lower Lake has become a gutter and experts need to study how the murky waters were affecting aquatic life in it.”
Experts from the fisheries department pointed out that during cloudy weather, the dissolved oxygen in lake water decreases, which, coupled with other factors like idol immersion, could have contributed in the death of fish.
Joint director fisheries US Tomar said, “Among other factors, the health of fish in water depends on biochemical oxygen demand,” and that low dissolved oxygen primarily results from excessive algae growth.
Courtesy of hindustantimes.com
Another outbreak of H5N1 highly pathogenic avian influenza has caused the deaths of 1000 birds in Nigeria.
The outbreak affected both 14-month-old layers and 8-week-old broilers on a farm in the Rivers area. Another 2500 birds were destroyed to prevent the disease spreading.
Movement controls, disinfection, stamping out and official disposal are all being used to try and control the spread of avian flu in Nigeria.
Courtesy of thepoultrysite.com
For weeks, we’ve been telling you how red tide has been affecting locals and visitors in Panama City Beach, but it’s affecting the shores of other cities too.
On Wednesday afternoon there were still a lot of dead fish at the Destin Harbor, but it was nothing compared to that morning. Locals say thousands of dead fish were washing ashore.
Crews came and cleaned up the mess, but when you look in the water, you can still see tons of dead fish floating in the water. The FWC released a new report on red tide Wednesday afternoon. It’s been found in high concentrations in six samples in and along the Bay County shores, and satellite images show red tide also on the shores of Walton, Gulf and Okaloosa Counties.
Extensive fish kill and respiratory problems have been reported in Bay, Gulf, Walton, Okaloosa, and Santa Rosa Counties. Locals say all of the dead fish is a sore sight to see on their beautiful beaches.
“It’s horrible we’ve got fish everywhere on the beach,” said Destin Resident Dan Dias. “Everyone’s coughing, getting the sinus problem from the fish being on the beach. It’s just very nasty and dirty.”
“I’ve smelt the really bad smell coming over the bridge,” said Fort Walton Beach Resident Jessica Hernandez. “I’ve seen earlier they had a whole bunch of fish out there.”
“Yes I’ve heard about it because I’m a local fisherman around here and I’ve just experienced it through the years,” said Jalen Robinson. “I really don’t find nothing really wrong with it besides you see a bunch of dead fish and the water’s red so it really kind of makes you question eating the seafood around here.”
No word yet on when the red tide will let up, but for now, if you have any type of chronic respiratory problem like asthma or COPD, FWC officials advise that you avoid the beach at this time.
Courtesy of wjhg.com
60 kilograms of fish overnight upcoming been “washed” so Deyang fish farming Xiao Jisong a difficult breathed, they suspected to be poisoned . Sichuan News Network reporter learned that, at present, the local police in the investigation.
This morning, the Sichuan News Network reporter went to Deyang Jingyang new Tamamura German town 13 new groups. About 100 meters away from the accident ponds can smell the smell of rotting fish, Xiao Jisong a busy tool salvage of dead fish in the pond, and then packed in a pit not far from the car shipped to be buried.
Sichuan News Network reporter saw dead fish ponds floating in the water, there are adult slap looks so great, some even more, of which there are a lot of small fish.
“Last Friday 4:00 before, heard outside ponds where the fish out of the water of the sound, so quickly ran out of view, found that some fish have jumped ashore, then walked around in a circle along the ponds, from the house the farthest place has been able to see the fish all turned white belly floating in the water. “肖继松 he said they found in the inlet not far from the pond of a pocket, which contained suspected poison, poison guess time Thursday night should be.
It is understood that Xiao Jisong 10 years of raising a fish, and make a living. In Germany the new town a total contracted 11 large and small ponds, where dead fish production in ponds is one of the largest fish ponds, and coming soon. Usually, there are three people guarding Xiao Jisong a fish ponds, fish ponds, although the accident next to their houses, but that night but did not find any suspicious persons.
“We live in a house with a fish pond inlet, about one hundred meters away, and the fish pond next to the road. In the evening, if someone is found not simply Intake poisoning.” Xiao Jisong said.
According to Xiao Jisong reports, the dead are carp, grass carp, carp and other six species of fish, an estimated 60,000 kilograms, the loss of 30 million. He raised a few years at the local fish, never to offend anyone. In addition to the dead, so many fish, this year in March, also died in the evening about 20,000 kilograms of fish, losses of up to four or five million.
Fish had died five days, he has gradually begun to rot stink. Since fish poisoning may be, it can not be thrown away, only a landfill. Last night, after Xiao Jisong rented a backhoe, dug a deep night each three meters wide and more than ten meters long pit. This morning, Xiao Jisong early in the morning, with a tool to salvage dead fish ponds destined for burial pit.
“Today, on the loss of about four or five hundred thousand.” Looked hard raised fish are thrown into the burial pit, Xiao Jisong sad to say, I hope the police catch people early. Currently, local police have been involved in the investigation.
Courtesy of legal.gmw.cn
Some 2,000 birds in a wetland near Lake Urmia in northwestern Iran have died over the past 15 days..
Announcing the news, West Azerbaijan Province Environment Department Director Parviz Arasteh stated that the deaths were not due to bird flu, IRNA news agency reported Oct. 27.
He said the birds were of different kinds, mostly coot, cotton pygmy goose and mountain cock.
He said experts surmise that low precipitation and the flow of domestic and industrial waste into the wetland may lie behind the situation.
Low precipitation and unbridled usage of surface and underground waters has run Iran into a serious water crisis.
Lake Urmia, the biggest inland Iranian lake has shrunk by degrees in the past decades and is facing a critical situation. If the lake dries out completely, serious environmental hazards will threaten the lives of people in the area.
Courtesy of en.trend.az
Thousands of fish were found dead today in the Laguna de San Jose, Puerto Rico’s capital as a result of a drastic reduction of oxygen in the water, reported a statement by the executive director of the Bay Estuary Program of San Juan (PEBSJ) Javier Laureano.
The official said that the lagoon water contained almost no oxygen and was located far from the 4 milligrams per liter considered suitable, according to the samples analyzed, reason that caused the death of fish.
He explained that when heavy rain is recorded, as in recent days, dragging fertilizer runoff and trash also accumulate spirulina, a small alga that causes the reduction of oxygen.
“Apart from being a regrettable episode of massive fish kills this phenomenon has a devastating impact on social enterprises and community-based area Cantera, La Playita, the Caño Martín Peña and Laguna San José” said Laureano.
Among the species of dead fish are examples of shad, sea bass, bream and sardines, among others.
He said that should not be collected dead fish for human consumption by the consequences it may have for health.
Courtesy of primerahora.com
The port authority staff already reportedly raised slightly more than 2 tons of dead fish.
The port navigation channel is crowded of fishes of different species and sizes.
Navy personnel and API escavaron a mass grave in the area of pines, where the fish are deposited.
The orullae of the beach and sea is observed lots of fish floating.
Courtesy of elmanana.com
Thousands of fish have been killed in a stream sparking an investigation by Natural Resources Wales.
Up to 3,000 fish are thought to have been killed on a mile-long stretch of the Nant Mawr between Ruthin and Denbigh .
They include salmon, sea trout, brown trout, eels and bullheads.
The incident is believed to have been caused by a blockage in the river. This has now been removed and river levels are expected to return to normal shortly.
Exotic tuna caught off Llyn Peninsula ‘shows seas are getting warmer’
However, the Nant Mawr is an important spawning stream for fish and the incident is likely to have a serious effect on fish populations in the area.
Nant Mawr is a tributary of the Clywedog which feeds the River Clwyd.
Health warning in Wrexham after toxic algae found in lake
NRW officers warn that as the river flows return to normal, the carcasses are likely to be washed downstream.
The fish may have been dead for a few days and people are asked not to touch the carcasses and allow them to be washed away naturally.
Emyr Jones, leading the investigation for Natural Resources Wales, said: “Fish such as trout and salmon are an important part of the ecology of our rivers and our economy.
“We are now investigating the cause of the blockage and will look at taking enforcement action against anyone who may be responsible.”
Courtesy of dailypost.co.uk