Hundreds of bunker, their mouths yawning open as they gape for oxygenated water and to clean their gills, were filmed swimming in the Peconic River Wednesday.
It’s a sign that a harmful algal bloom, known as mahogany tide, could soon cause another large fish kill in the river.
Here’s a prediction you’ll probably hope is wrong.
A marine researcher from Molloy College in Rockville Centre is predicting that a massive fish and turtle kill will occur in the Peconic Bay within the next week or so. Just like it was predicted last year. READ
An official study of last summer’s fish kills in the Peconic River, which were attributed to a variety of factors, confirmed that the biggest culprit was nitrogen-fed algal blooms, according to the state Department of Environmental Conservation. READ
Word of thousands of dead fish washing up on local shores might seem like old news at this point, but another drop in oxygen levels in local waters, coupled with a migration of bunker up the Peconic River resulted in yet another, separate fish kill over the weekend. (more…)
We’ve been reminded a lot in recent weeks that fish kills are a regular occurrence in these parts, and aren’t anything new.
These comments are being made mostly to cast doubt on assertions by scientists and other researchers that high nitrogen levels and the resulting algal blooms are to blame for depleted oxygen levels in area waters — hence all the dead fish. Yes, local environmental organizations have used recent fish kills to push their agendas — albeit noble ones — and figure out how to prevent such high levels of nitrogen from reaching our waters moving forward. But they’re doing so for good reason.
There were bunker kills in 2008 and 2009 as well — and there’s no denying that massive kills have been happening for as long as anyone around here can remember. But it’s also a fact that for generations, Long Islanders from Brooklyn to Montauk have been polluting our waters with chemicals, fertilizers and, if you go back far enough, even raw sewage.
Just because people weren’t talking about nitrogen in the 1960s or 1970s doesn’t mean it didn’t play a part in fish kills back then, or even just a few years ago. It’s only relatively recently that researchers have been able to identify nitrogen — most of it coming from our wastewater — as the culprit responsible for the unhealthy state of our local estuaries and shellfish.
The passage and funding of the Clean Water Act of 1972 and the funding that came with it, along with fertilizer restrictions and more efficient sewer treatment plants, have improved the state of our bays and Long Island Sound. But it’s all been a zero-sum game in the face of nonstop residential and commercial development.
With development came people, and their outdated septic systems — all sending more waste into groundwater and surrounding surface waters. Deny that or not, but wouldn’t common sense dictate we shouldn’t go to the bathroom where we drink? People in Southold and more rural areas of Riverhead are right to be wary of installing more public sewers, because that does often lead to more housing, but they can’t have it both ways. The movement now is toward figuring out more efficient methods of filtering our residential waste, and doing so in a way that’s financially feasible.
Even if people are skeptical of the researchers, keeping our most precious resource as clean as possible is a goal worthy of time, attention and, most of all, government funding — because it’s clear that developing, installing and maintaining newer technologies is going to be expensive.
County lawmakers, scientists and environmentalists acknowledge nitrogen overloading in local waterways is the biggest contributor to the recent die-off of fish and turtles.
They also agree aging septic tanks and failing cesspool systems are mostly to blame for brown and red tides in the Peconic Estuary, as well as toxic blue-green algae at Lake Marratooka in Mattituck.
The public’s reliance of fertilizers is a problem, too, experts say.
In an effort to address the recent fish kill in Riverhead that some experts have described as unprecedented, Legislator Dr. William Spencer (D-Centerport), chairman of the Suffolk County Health Committee, assembled a panel discussion at Thursday’s health committee meeting in Hauppauge.
Over the past several weeks, the East End’s waterways have been inundated with toxic red and mahogany tides resulting in die-offs of diamondback terrapin (turtles), bunker and alewives. Our local media have done a good job of not only reporting on these occurrences but also speaking with the experts to explain them.
So I was infuriated when Riverhead Supervisor Walter, asked about these die-offs, was quoted as saying that previous rain “may have washed toxins into the water” and quickly backed away from the “toxic” idea, saying later when asked about scientists’ findings, “Yeah, well everybody has their own theory. Mine is that the bluefish are chasing them into the river.”
Yeah, the bluefish are to blame. (more…)
Bunker fish lined the bay shores of Southold Town Sunday morning, days after the latest massive fish kill reports in Riverhead and Southampton towns. (more…)
A recent die-off of bait fish in the Peconic Estuary has Riverhead Town rallying local fishermen to harvest as many bunker as they can before the fish die, according to Supervisor Sean Walter.
“It’s a critical situation,” Mr. Walter said. “We’re having a real problem.”
The die-off has been blamed on low oxygen levels in nearby waters caused by a recent algae bloom, said Christopher Gobler, a biologist at Stony Brook University who’s been investigating the kill.
“This may be the biggest fish kill I’ve ever seen and I’ve been working for more than 20 years,” he told the News-Review.
The kill comes weeks after a separate massive die-off of diamondback terrapin turtles, which has also been linked to toxic shellfish likely caused by the algae — also known as red or brown tide.
Mr. Gobler said oxygen levels in the Peconic Estuaries began dropping Wednesday night as the algae became more dense. By Friday, readings from the County Road 105 bridge showed zero oxygen in the water for the fish to breathe.
When a school of bunker swam into this “dead zone,” they suffocated and died, he said. There have been reports of thousands of the dead bunker washing up along town and private beaches.
“This is a pretty remarkable size fish kill,” Mr. Gobler noted. “There were fished piled on top of each other on the shoreline.”
Mr. Walter said that may pose a public safety hazard. While the town is working with the state Department of Environmental Conservation, Mr. Walter said they’ll need to dispose of the dead fish somehow.
Ideally, the fish would be cleaned up and moved to the Brookhaven landfill, if the DEC allows that, he said. Otherwise, Mr. Walter said he may declare a town-wide state of emergency to clean up the fish and bury them at the town’s own waste facility.
“We’re ready to take action, we just don’t know what action we’re going to take,” Mr. Walter said. “The next 24 hours will tell.”
While the town waits for DEC approval, Mr. Walter said local boat captains have been contacted to round up bunker in the Peconic Estuary before they continue to die off.
Nate Phillips, a commercial fisherman from Greenport, is one of those boat captains. Normally, fishermen are only allowed to take a certain quota of bunker, which are used by lobstermen and other fishermen as bait. Mr. Phillips said those restrictions may be voided during this crisis.
“Obviously, the ultimate goal is to get it cleaned up before they all die,” he said. “When they die they’re a terrible, stinky mess.”
Mr. Phillips told the News-Review he was rounding up a group of fishermen — as many as five or six boats — to harvest the fish using haul seines, scoop nets, or “basically whatever we can get them with.”
The harvest could begin as early as Saturday night.
Mr. Gobler said fish kills are not unusual, but they’re not seen as often in other parts of Long Island where the bunker group together to spawn.
“There’s very few places on Long Island where oxygen levels are going to zero for multiple hours,” he said. “That’s not normal.”
Mr. Gobler said nitrogen runoff likely fed this specific algal bloom, nicknamed “mahogany tide.” Shallow creeks and tributaries of the river are especially vulnerable to algae blooms because the nitrogen gets concentrated in one area.
Historically, the Peconic Estuary has had relatively low oxygen levels to begin with, Mr. Gobler said. With these blooms moving in, the River will “probably have oxygen problems through the summer,” he said.
“It’s going to hit low and no oxygen levels throughout the summer,” he said. “But there may not be the equivalent fish kills because … the fish will sense the low oxygen levels and turn around.”