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Toxic algae sickens humans, kills pets
Post Register - 11/18/2017
A year ago, shortly after a frolic in Idaho'sSnake River, Briedi Gillespie's 11-year-old Chesapeake Bay retriever stopped breathing. Her respiratory muscles were paralyzed, her gums dark blue from lack of air.
Gillespie, a professor of veterinary medicine, and her veterinarian husband performed mouth-to-nose resuscitation and chest massage while racing their beloved Rose to a clinic. They spent eight hours pumping oxygen into her lungs and steroids into her veins. She pulled through.
The next day, Gillespie spotted Rose's paw prints in a purplish, slimy patch on the riverbank and took samples from nearby water. They were laced with algae toxins.
"It was pretty horrendous," Gillespie said. "This is my baby girl. How thankful I am that we could recognize what was going on and had the facilities we did, or she'd be gone."
While Rose recovered, waterways across the U.S. have not - choked with algae that's sickening people, killing animals and hammering the economy. The scourge is escalating from occasional nuisance to severe, widespread hazard, overwhelming government efforts to curb a leading cause: fertilizer runoff from farms.
Last year, Florida's governor declared a state of emergency and beaches were closed when algae blooms spread from Lake Okeechobee to nearby estuaries. More than 100 people fell ill after swimming in Utah's largest freshwater lake. Pets and livestock have died after drinking algae-laced water, including 32 cattle on an Oregon ranch in July. Oxygen-starved "dead zones" caused by algae decay have increased 30-fold since 1960, causing massive fish kills. This summer's zone in the Gulf of Mexico was the biggest on record.
Tourism and recreation have suffered. An international water skiing festival in Milwaukee was canceled in August; scores of swimming areas were closed nationwide.
Henry's Lake in eastern Idaho has been the subject of several health advisories in recent years due to algae toxins.
Algae are essential to food chains, but these tiny plants and bacteria sometimes multiply out of control. Within the past decade, outbreaks have been reported in every state, a trend likely to accelerate as climate change boosts water temperatures.
"If we increase the amount of toxic algae in our drinking water supply, it's going to put people's health at risk," said Don Scavia, a University of Michigan environmental scientist. "Even if it's not toxic, people don't want to go near it. They don't want to fish in it or swim in it. That means loss of jobs and tax revenue."
Many monster blooms are triggered by an overload of agricultural fertilizers in warm, calm waters, scientists say. Chemicals and manure intended to nourish crops are washing into lakes, streams and oceans, providing an endless buffet for algae.
Government agencies have spent billions of dollars and produced countless studies on the problem. But an Associated Press investigation found little to show for their efforts:
? Levels of algae-feeding nutrients such as nitrogen and phosphorus are climbing in many lakes and streams.
? A small minority of farms participate in federal programs that promote practices to reduce fertilizer runoff. When more farmers want to sign up, there often isn't enough money.
? Despite years of research and testing, it's debatable how well these measures work.
The AP's findings underscore what many experts consider a fatal flaw in government policy: Instead of ordering agriculture to stem the flood of nutrients, regulators seek voluntary cooperation, an approach not afforded other big polluters.
Farmers are asked to take steps such as planting "cover crops" to reduce off-season erosion, or installing more efficient irrigation systems - often with taxpayers helping foot the bill.
The U.S. Natural Resources Conservation Service, part of the Department of Agriculture, says it has spent more than $29 billion on voluntary, incentive-based programs since 2009 to make some 500,000 operations more environmentally friendly.
Jimmy Bramblett, deputy chief for programs, told AP the efforts had produced "tremendous" results but acknowledged only about 6 percent of the nation's roughly 2 million farms are enrolled at any time.
In response to a Freedom of Information Act request, the agency provided data about its biggest spending initiative, the Environmental Quality Incentives Program, or EQIP, which contracts with farmers to use pollution-prevention measures and pays up to 75 percent of their costs.
An AP analysis shows the agency paid out more than $1.8 billion between 2009 and 2016 to share costs for 45 practices designed to cut nutrient and sediment runoff or otherwise improve water quality. A total of $2.5 billion was pledged during the period.
Since 2009, the program has given more than $30 million to farmers in southern Idaho counties where runoff is most likely to contribute to algae blooms in the Snake River, and in both Brownlee Reservoir and Hells Canyon near the Idaho-Oregon border. It has given $51 million for Indiana, Michigan and Ohio farmers in the watershed flowing into western Lake Erie.
Yet some of the lake's biggest algae blooms showed up during those seven years. The largest on record appeared in 2015, blanketing 300 square miles - the size of New York City. The previous year, an algae toxin described in military texts as being as lethal as a biological weapon forced a two-day tap water shutdown for more than 400,000 customers in Toledo. This summer, another bloom oozed across part of the lake and up a primary tributary, the Maumee River, to the city's downtown for the first time in memory.
The type of phosphorus fueling the algae outbreak has doubled in western Lake Erie tributaries since EQIP started in the mid-1990s, according to research scientist Laura Johnson of Ohio'sHeidelberg University. Scientists estimate about 85 percent of the Maumee's phosphorus comes from croplands and livestock operations.
NRCS reports, meanwhile, claim that conservation measures have prevented huge volumes of nutrient and sediment losses from farm fields.
In arid western Idaho, where phosphorus runoff is linked to algae blooms and fish kills in the lower Snake River, government funding is helping farmer Mike Goodson install equipment to convert to drip irrigation rather than flooding all of his 550 acres with water diverted from rivers and creeks.
But only 795 water protection contracts were signed by Idaho farmers between 2014 and 2016, accounting for just over 1 percent of the roughly 11.7 million farmland acres statewide. Even if many farmers are preventing runoff without government subsidies, as Bramblett contends, the numbers suggest there's a long way to go.
A U.S.-Canadian panel seeking a 40 percent cut in Lake Erie phosphorus runoff wants to make controlling nutrients a mandatory condition for receiving federally subsidized crop insurance.
"We've had decades of approaching this issue largely through a voluntary framework," said Jon Devine, senior attorney for the Natural Resources Defense Council. "Clearly the existing system isn't working."
But Goodson says forcing others to follow his example would backfire.
"Farmers have a bad taste for regulatory agencies," he said, gazing across the flat, wind-swept landscape. "We pride ourselves on living off the land, and we try to preserve and conserve our resources."
Allowing farmers to decide whether to participate can be costly to others, however. The city of Boise completed a $20 million project last year that will remove phosphorus flowing off irrigated farmland before it reaches the Snake River.
Questions of effectiveness
Another question is whether the anti-pollution measures subsidized by the government actually work.
Agriculture Department studies of selected watersheds, based largely on farmer surveys and computer models, credit them with dramatic cutbacks in runoff. One found nitrogen flows from croplands in the Mississippi River watershed to the Gulf of Mexico would be 28 percent higher without those steps being taken.
Critics contend such reports are based mostly on speculation, rather than on actually testing the water flowing off fields.
Experts say for such pollution controls to make a difference, lots more participation is needed.
"The practices are completely overwhelmed," said Stephen Carpenter, a University of Wisconsin lake ecologist. "Relying on them to solve the nation's algae bloom problem is like using Band-Aids on hemorrhages."
The Environmental Protection Agency says indirect runoff from agriculture and other sources, such as urban lawns, is now the biggest source of U.S. water pollution. But a loophole in the Clean Water Act of 1972 prevents the government from regulating runoff as it does pollution from sewage plants and factories that release waste directly into waterways. They are required to get permits requiring treatment and limiting discharges, and violators can be fined or imprisoned.
Those rules don't apply to farm fertilizers that wash into streams and lakes when it rains. Congress has shown no inclination to change that.
Without economic consequences for allowing runoff, farmers have an incentive to use all the fertilizer needed to produce the highest yield, said Mark Clark, a University of Florida wetland ecologist. "There's nothing that says, ?For every excessive pound I put on, I'll have to pay a fee.' There's no stick."
Algae plague spreads
While there's no comprehensive tally of algae outbreaks, many experts agree they're "quickly becoming a global epidemic," said Anna Michalak, an ecologist at the Carnegie Institution for Science at Stanford University.
A rising number of water bodies across the U.S. have excessive levels of nutrients and blue-green algae, according to a 2016 report by the Environmental Protection Agency and U.S. Geological Survey. The algae-generated toxin that sickened Steele in Lake Erie was found in one-third of the 1,161 lakes and reservoirs the agencies studied.
Just this summer, algae alerts popped up at western Idaho'sBrownlee Reservoir, Esther Simplot Park and Lake Lowell. The outbreak last fall that sickened Gillespie's dog killed other dogs and horses in an area of the Snake River near Rupert, a local veterinarian told the Times-News at the time.
The U.S. Centers for Disease Control and Prevention is developing a system for compiling data on algae-related illnesses. A 2009-10 study tallied at least 61 victims in three states, a total the authors acknowledged was likely understated.
New York created a team of specialists to confront the mounting problem in the Finger Lakes, a tourist magnet cherished for sparkling waters amid lush hillsides dotted with vineyards. Two cities reported algal toxins in their drinking water in 2016, a first in New York.
More than half the lakes were smeared with garish green blooms this summer.
"The headlines were basically saying, ?Don't go into the water, don't touch the water,' " said Andy Zepp, executive director of the Finger Lakes Land Trust, who lives near Cayauga Lake in Ithaca. "I have an 11-year-old daughter, and I'm wondering, do I want to take her out on the lake?"