May 08, 2013 - UNITED STATES - The spring weather brought with it something pretty unsightly near
St. Paul. Hundreds of fish recently died in Beaver Lake, and many of
them ended up all along the shoreline.
Fish kills are not unusual this time of year, but this one has Ramsey
County officials worried. The fish died even though there is an
aeration system in Beaver Lake.
Ruth Klabunde walks her dogs around the lake about three times a week. The first thing she noticed was the smell.
“This is a really fun little lake to walk around,” Klabunde said. “And the stench was kind of bad.”
And then Klabunde says she saw the source.
Hundreds Of Dead Fish Wash Up On Beaver Lake, Minnesota.
It’s estimated that more than 7,000 pounds of dead fish – mostly catfish, sunfish and bass – have been taken out of Beaver Lake. But what caused this unusually large fish kill is still a mystery.
Beaver Lake has an aeration pump that can be turned on when oxygen levels get low. Ramsey County turned the pump on in February, but it only reaches a small part of the lake.
Terry Noonan is a water resources manager for Ramsey County public works. He said the DNR stocks the lake with fish. But instead of reeling in panfish, they had to hire someone to pull them out by the truckload.
“For whatever reason this year the aeration system did not perform as we’d hoped,” Noonan said.
He thinks the cold spring and too many fish seeking oxygen caused Beaver Lake to go belly up.
“It could be that just so many fish accumulated in that relatively small area, that that’s a stresser in and of itself,” said Noonan.
The extent of the fish kill won’t be known until the DNR can get out and do some sampling. There are still fish in the lake, but Noonan said there is little doubt that this could temporarily hurt recreational fishing.
It’s possible the DNR may have to restock the lake if fish numbers get too low. -
CBS Minnesota.
Regulators Investigating Second Fish Kill In Two Weeks In Harlan County Creek, Kentucky.
For the second time in two weeks, fish have been found dead in an eastern Kentucky creek, and state regulators aren’t sure what factors are to blame for the fish kill.
This time,
hundreds of dead fish were found in Catrons Creek, in Harlan County. The dead fish range from more than a foot long to minnows.
But no one knows what caused the fish kill yet. People living near the creek reported seeing black water, and the culprit could be some kind of discharge of chemicals upstream from a coal mine or other industry.
"It’s looking like there’s something discharging, some kind of contaminant in the water," Division of Fish and Wildlife officer Steve Combs said. "We don’t have any evidence of that, because by the time people call us and we get people there to take samples, a lot of time it’s flushed out."
There was also no sign of a toxic algae bloom, which can be caused by excess nutrients in the water.
Now, regulators are waiting for the results of water tests to try to determine what’s to blame for the fish kill. They’ve tested for volatile organic compounds, heavy metals, dissolved oxygen and pH, and should have the results in about two weeks. -
WFPL.
Three More Dolphins Found Dead Indian River Lagoon, Florida.
Biologists removed three more dead bottlenose dolphins in the Indian River Lagoon Monday,
bringing this year's total lagoon bottlenose body count to at least 30.
Staff from Hubbs-SeaWorld Research Institute performed onsite
examinations of the three dolphins: two of them in Merritt Island and
one in Rockledge.
At least 30 dolphins have died in the lagoon since Jan. 1, all but a few
in Brevard, most near Merritt Island. That's more than twice what would
be expected, based on the death rate during the past decade.
The National Oceanic and Atmospheric Administration already has declared the
100 or so manatee deaths in the lagoon since mid-2012
an Marine Mammal Unusual Mortality Event. The declaration triggers
NOAA's own formal investigation. The federal agency is examining whether
the dolphin and manatee deaths might be connected.
While the manatees die quickly, the dolphins show signs of a drawn-out
syndrome. Most are found very thin, with enlarged spleens.
As many as 300 brown pelicans also have died in the lagoon region since February, maybe more. Those tested were negative for botulism and other common causes of bird death. They come in with heavy parasite counts.
About half the dolphins studied in the lagoon in the past decade suffer
from some form of chronic infectious disease, suggesting compromised
immune systems.
Researchers find levels of mercury - a potent neurotoxin - in the
skin and blood of lagoon dolphins that are higher than in any other
dolphins that have been studied. They also find high incidence of
tumors, heart problems, cancer, stomach ulcers, skin lesions, genital
herpes and other emerging ailments previously thought rare in dolphins.
Dolphins captured near Merritt Island, especially, test in poor health.
Researchers have pointed to water tainted by treated sewage and runoff as the possible cause. -
Florida Today.
Dead Fish Discovered In Delaware Lake, Ohio Is The Result Of Temperature Change.
There have been several reports concerning dead fish that have been found along Delaware Lake.
Officials have now provided an explanation as to why they are dying.
A photo was taken earlier on Monday, and the Ohio Department of Natural Resources said there is no need to worry about the water quality being a cause for the fish kill.
It is not unusual for the fish, which are called Gizzard Shad, to die when the water temperature quickly changes from cold to warm.
The ODNR says that not all the fish die, but many of them do during this time of year. -
10tv.