By Kera Abraham / from the MontereyCountyWeekly
LIFE ON EARTH depends on little specks floating in the ocean. Tiny plankton convert sunlight to energy to form the base of the marine food chain, sustaining all seafaring creatures, from anchovies to whales and the land-based animals that eat them.
But increasingly, researchers are peering through their microscopes at the specks in seawater samples and finding miniscule bits of poisonous garbage instead of life-sustaining mini-critters.
It’s plastic— broken by sunlight and water into itty bitty pieces, but still intact. And now scientists are discovering the implications of one troubling attribute of petroleum-based plastic, known since its invention, but ignored under the assumption that technology would eventually resolve it: Every plastic product that has ever been manufactured still exists.
Only 50 years since we began mass-producing it, our plastic waste has built up into a poisonous mountain we have never really learned how to deal with. It makes up 10 percent of California’s garbage, is toxic to burn and hard to recycle.
Out in the Pacific Ocean a vortex of trash swirls and grows, forming a garbage dump twice the size of Texas.
Sea turtles choke on plastic bags, mistaking them for jellyfish. Albatross parents ingest lighters and plastic shards along with squid and small fish, regurgitating them into their chicks’ open throats, eventually killing them.
Shrimp, jellyfish and small fish eat the particle-sized plastic debris that look a lot like plankton, and which, in some places, are three times more abundant than the real thing.
A 2004 report from the congressional Commission on Ocean Policy identifies synthetic marine debris as “a serious threat to wildlife, habitat, and human health and safety,” calling for a set of immediate measures to address the crisis. A growing number of decision-makers are finally paying attention, positioning California to lead the world in staunching the flow of plastic to sea.
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CAPTAIN CHARLES MOORE stands in a business suit before an audience of about 50 California district attorneys attending an environmental law-enforcement conference at the Asilomar Conference Grounds, giving his pitch about just how abundant and dangerous marine debris has become. The mass of plastic already in the sea is so big that researchers with his nonprofit, Algalita Marine Research Foundation, have found it throughout the water column in every sample they’ve ever taken from the Pacific Ocean. Most of it is so small and so abundant that it would be nearly impossible to filter out.
Yet the state’s current response to the proliferating debris, Moore tells the prosecutors, wrongly puts the most emphasis on cleanup, followed by control and prevention. He argues that it would be much more effective for the state to flip priorities and dedicate a majority of resources to preventing plastics from reaching the ocean in the first place. The DAs, here to discuss environmental crime prosecution, listen attentively.
After his keynote, Moore changes into a Hawaiian shirt for our lunchtime interview. He seems more comfortable this way, like he’d rather be playing on the beach than giving presentations. The founder of the Long Beach Surfrider chapter briefly considers catching a few waves with Monterey chapter chair Ximena Wiassbluth before heading back to the airport, but there’s no swell. He tells me that just a few weeks ago, on his 60th birthday, he surfed 30 waves in 90 minutes. “It’s a way to stay in contact with Mother Ocean,” he says.
Moore stumbled into his career as an environmental pioneer 10 years ago. In the summer of 1997, while steering his catamaran home from a sailing competition in Hawaii, he ventured into the North Pacific Gyre, a 10-million-square-mile, slow-moving vortex that sailors usually avoid. What he saw there shocked and disgusted him: truck tires, disposable utensils, shopping bags, buoys, toys, a mountain of trash spread across hundreds of miles— the world’s largest garbage dump, circling unceremoniously in the open sea.
Upon his return to the mainland, Moore took up his cause through the Long Beach-based Algalita Marine Research Foundation, which he’d founded in 1994 to do restoration work on kelp forests and wetlands. The nonprofit has since become the West Coast’s go-to organization on the topic of synthetic marine debris. “The ocean is still beautiful,” he says. “We’re really taking on this issue because we’re mad as hell that the most common thing that we find in the ocean now is plastic.”
Algalita researchers have found that the amount of micro plastics in the Central North Pacific has tripled in the last decade. Their colleagues on the other side of the Pacific concluded that off the coast of Japan it has shot up by a factor of 10 every two to three years.
A recent study found that plastics now make up 90 percent of all floating marine debris.
Plastic is not biodegradable, but rather photodegradable. Sunlight makes plastic brittle and breaks it down, but leaves its molecular structure intact. The little plastic shards disperse throughout the ocean, with buoyant pieces floating and denser bits sinking to the sea floor, in so many shapes and textures that hundreds of marine species mistake it for food. It can travel thousands of miles across the sea and wash up on remote uninhabited islands, whose beaches are beginning to look more trash-strewn than LA’s worst. The rate of trash accumulation is greatest at the poles, with Antarctica’s shores becoming the industrial world’s junkyard.
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THE MOST DRAMATIC accumulations of trash are found in “gyres” such as the one Moore sailed into— these sort of giant toilet bowls where atmospheric pressure weakens currents and winds, causing marine debris to idly swirl toward the gyre’s eye. Researchers know of six such gyres, including the one in the Pacific north of Hawaii that Moore is credited with discovering.
Researchers dubbed it the Eastern Garbage Patch, a neighbor to the Western Garbage Patch off the coast of Japan. In 1999, Algalita’s samples from the eastern patch contained six times more plastic than plankton by weight, roughly 400,000 particles per square mile— triple the amount counted in 1990.
The expanse of trash is estimated to be 540,000 square miles, but Moore says it’s growing so fast it’s nearly impossible to give it dimensions. When he sampled water 600 miles from the center of the gyre in November 2006— an area that had contained relatively low debris levels six years earlier— Moore was horrified to find nearly as much plastic as he’d found in the center of the gyre in 2000.
He now thinks the Eastern and Western Garbage Patches have merged into a mega-garbage patch stretching across the Pacific Rim, like sprawl connecting New York and Boston into a megacity of continuous development.
“It’s a single strip of polluted ocean,” he says. “Huge increases in production are making the whole ocean this plastic soup. Every creature in the ocean is eating plastic.”
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The worst effects are seen in a sea-going bird that lives on Midway Atoll in the north Pacific. Researchers estimate that 40 percent of the albatross chicks that die on the atoll are killed by the plastic filling their guts, fed to them by their parents. The plastic contaminates their blood and blocks their digestive tracts, leaving them dehydrated and undernourished.
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“Huge increases in production are making the whole ocean this plastic soup.” —Charles Moore
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Dr. Curtis Ebbesmeyer of Beachcombers Alert says that plastic debris is taking a toll on hundreds of marine species. Baby sea turtles who get stuck in six-pack rings grow distorted shells; birds choke on plastic shards that mimic fish and krill; and sea lions are caught in nylon nets abandoned by fishing vessels.
Ebbesmeyer believes that plastic marine debris is also hurting people. Because plastic accumulates up the food chain, be says, some level of plastic is present in all of the seafood we eat.
In addition to the physical impacts, plastics are wreaking biological havoc on both marine and land-based animals, including humans. Virtually every kind of petroleum-based plastic leaches chemicals into the substances it encounters. Some of the chemicals added to make plastic products more flexible, durable and flame-retardant are suspected endocrine disrupters and hormone mimickers that can affect the development of creatures exposed to them. For example, recent research has linked bisphenol-A exposure with early breast development and menstruation in girls, feminine characteristics in boys, and decreased fertility in both sexes.
Tim Shestek, a spokesman for plastic industry group the American Chemistry Council (ACC), argues that the studies are misleading— that the effects of high concentrations of plastic additives on lab animals don’t translate to humans exposed to chronic low doses.
“The scientific consensus is that these compounds are safe in the current applications that they’re being used for,” Shestek says.
Moore counters that industry is on a mission to confuse consumers with biased science. He notes that of 149 government-funded studies on bisphenol-A, 93 percent found that the compound is harmful, but all 12 industry-funded studies concluded that it is benign.
Plastics also can absorb hazardous synthetic chemicals such as PCBs and pesticides. Researchers are finding that plastic debris pick up these compounds from the sea water, carry them for hundreds of miles, and then leach them out elsewhere, leading Algalita staff to dub them “poison pellets.”
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MANUFACTURERS make 60 billion tons of plastic every year, the majority of it for products that will be used once and thrown away....
STROLLING NEAR the Municipal Wharf, Moore shifts into research gear. Along the dock he finds a chip bag, a plastic water bottle and a broken-up Styrofoam cup floating in a mass of twigs and dirt near a sunken orange traffic cone. “What are the fish eating underneath that?” he asks. “Some of it is mimicking food.”
A few hundred yards down the shore, he discovers plastic cups and nylon rope wedged into the cracks between some boulders. He nabs a drifting plastic bag, which he calls “the modern tumbleweed,” and shakes his head at sheets of black plastic laid under the rocks, likely intended to stabilize the slopes: they’re already tearing, broken down by the sun. “That’s all becoming part of the ocean environment right now,” he says.
After combing Monterey State Beach for a half hour, Moore peers into our bag of collected litter and does an impromptu analysis. He concludes that cigarette butts, whose filters are made from cellulose acetate, are the most common plastic debris, followed by Styrofoam and bottle caps. He finds a few broken-up, brittle plastic pieces that he says have floated in from afar, but he estimates that roughly 90 percent of the beach’s litter is local. “That means that you can do something about it through local enforcement.”
Eras of human history are defined by their most prominent materials, Moore theorizes. Throughout the Stone Age, the Bronze Age and the Iron Age, societies have followed a pattern of extracting a resource, expanding its industry, and recycling only when it begins to run out. He says that since 1979, when the tonnage of plastic exceeded the tonnage of steel produced, we’ve been in the midst of the Plastic Age. We don’t recycle much of it now; only when oil becomes more scarce will we begin “mining our landfills.” And that, Moore asserts, is the central contradiction of our times: the popularity of disposable products made from a material that lasts forever. “Plastic is the lubricant of globalization,” he says. “That’s what facilitates all this junky stuff making it to all the corners of the earth.”
He’s quick to point out that he’s not an enemy of petroleum-based plastics per se; it’s just the temporary-use stuff that gets to him. “We really have to start thinking about plastics being forever,” he says. “The world needs to wake up for the potential of plastics to be what we wanted when we got into this thing: durable. It could be OK to have something you got when you were young and lasted you your whole life. But that is bad for an economy based solely on growth and waste. That’s the same paradigm as a cancer cell.”
“It’s like when you break your leg— it never heals totally,” Moore says. “There’s no such thing as complete recovery from an environmental insult.” But that’s not to say we shouldn’t try.
Thursday, June 14, 2007
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