NYCkayaker Fwd: L.A. Times: Plague of Plastic Chokes the Seas
moonshine109 at verizon.net
moonshine109 at verizon.net
Thu Aug 3 16:09:10 EDT 2006
>From the Los Angeles Times
http://www.latimes.com/news/printedition/la-me-ocean2aug02,0,5274274,full.story
ALTERED OCEANS
Plague of Plastic Chokes the Seas
On Midway Atoll, 40% of albatross chicks die,
their bellies full of trash. Swirling masses of
drifting debris pollute remote beaches and snare
wildlife.
By Kenneth R. Weiss
Times Staff Writer
August 2, 2006
MIDWAY ATOLL The albatross chick jumped to its
feet, eyes alert and focused. At 5 months, it
stood 18 inches tall and was fully feathered
except for the fuzz that fringed its head.
All attitude, the chick straightened up and
clacked its beak at a visitor, then rocked back
and dangled webbed feet in the air to cool them
in the afternoon breeze.
The next afternoon, the chick ignored passersby.
The bird was flopped on its belly, its legs
splayed awkwardly. Its wings drooped in the hot
sun. A few hours later, the chick was dead.
John Klavitter, a wildlife biologist, turned the
bird over and cut it open with a knife. Probing
its innards with a gloved hand, he pulled out a
yellowish sac its stomach.
Out tumbled a collection of red, blue and orange
bottle caps, a black spray nozzle, part of a
green comb, a white golf tee and a clump of tiny
dark squid beaks ensnared in a tangle of fishing
line.
"This is pretty typical," said Klavitter, who is
stationed at the atoll for the U.S. Fish and
Wildlife Service. "We often find cigarette
lighters, bucket handles, toothbrushes, syringes,
toy soldiers anything made out of plastic."
It's all part of a tide of plastic debris that
has spread throughout the world's oceans, posing
a lethal hazard to wildlife, even here, more than
1,000 miles from the nearest city.
Midway, an atoll halfway between North America
and Japan, has no industrial centers, no
fast-food joints with overflowing trash cans, and
only a few dozen people.
Its isolation would seem to make it an ideal
rookery for seabirds, especially Laysan
albatross, which lay their eggs and hatch their
young here each winter. For their first six
months of life, the chicks depend entirely on
their parents for nourishment. The adults forage
at sea and bring back high-calorie takeout: a
slurry of partly digested squid and flying-fish
eggs.
As they scour the ocean surface for this
sustenance, albatross encounter vast expanses of
floating junk. They pick up all manner of plastic
debris, mistaking it for food.
As a result, the regurgitated payload flowing
down their chicks' gullets now includes Lego
blocks, clothespins, fishing lures and other
pieces of plastic that can perforate the stomach
or block the gizzard or esophagus. The sheer
volume of plastic inside a chick can leave little
room for food and liquid.
Of the 500,000 albatross chicks born here each
year, about 200,000 die, mostly from dehydration
or starvation. A two-year study funded by the
U.S. Environmental Protection Agency showed that
chicks that died from those causes had twice as
much plastic in their stomachs as those that died
for other reasons.
The atoll is littered with decomposing remains,
grisly wreaths of feathers and bone surrounding
colorful piles of bottle caps, plastic dinosaurs,
checkers, highlighter pens, perfume bottles,
fishing line and small Styrofoam balls. Klavitter
has calculated that albatross feed their chicks
about 5 tons of plastic a year at Midway.
Albatross fly hundreds of miles in their search
for food for their young. Their flight paths from
Midway often take them over what is perhaps the
world's largest dump: a slowly rotating mass of
trash-laden water about twice the size of Texas.
This is known as the Eastern Garbage Patch, part
of a system of currents called the North Pacific
subtropical gyre. Located halfway between San
Francisco and Hawaii, the garbage patch is an
area of slack winds and sluggish currents where
flotsam collects from around the Pacific, much
like foam piling up in the calm center of a hot
tub.
Curtis Ebbesmeyer has been studying the clockwise
swirl of plastic debris so long, he talks about
it as if he were tracking a beast.
"It moves around like a big animal without a
leash," said Ebbesmeyer, an oceanographer in
Seattle and leading expert on currents and marine
debris. "When it gets close to an island, the
garbage patch barfs, and you get a beach covered
with this confetti of plastic."
Some oceanic trash washes ashore at Midway
laundry baskets, television tubes, beach sandals,
soccer balls and other discards.
Nearly 90% of floating marine litter is plastic
supple, durable materials such as polyethylene
and polypropylene, Styrofoam, nylon and saran.
About four-fifths of marine trash comes from
land, swept by wind or washed by rain off
highways and city streets, down streams and
rivers, and out to sea.
The rest comes from ships. Much of it consists of
synthetic floats and other gear that is
jettisoned illegally to avoid the cost of proper
disposal in port.
In addition, thousands of cargo containers fall
overboard in stormy seas each year, spilling
their contents. One ship heading from Los Angeles
to Tacoma, Wash., disgorged 33,000 blue-and-white
Nike basketball shoes in 2002. Other loads lost
at sea include 34,000 hockey gloves and 29,000
yellow rubber ducks and other bathtub toys.
The debris can spin for decades in one of a dozen
or more gigantic gyres around the globe, only to
be spat out and carried by currents to distant
lands. The U.N. Environment Program estimates
that 46,000 pieces of plastic litter are floating
on every square mile of the oceans. About 70%
will eventually sink.
Albatross are by no means the only victims. An
estimated 1 million seabirds choke or get tangled
in plastic nets or other debris every year. About
100,000 seals, sea lions, whales, dolphins, other
marine mammals and sea turtles suffer the same
fate.
The amount of plastic in the oceans has risen
sharply since the 1950s. Studies show a tenfold
increase every decade in some places. Scientists
expect the trend to continue, given the
popularity of disposable plastic containers. The
average American used 223 pounds of plastic in
2001. The plastics industry expects per-capita
usage to increase to 326 pounds by the end of the
decade.
The qualities that make plastics so useful are
precisely what cause them to persist as trash.
Derived from petroleum, plastics eventually break
down into carbon dioxide and water from exposure
to heat and the sun's ultraviolet rays.
On land, the process can take decades, even
centuries. At sea, it takes even longer, said
Anthony L. Andrady, a polymer chemist at the
Research Triangle Institute in North Carolina who
studies marine debris. Seawater keeps plastics
cool while algae, barnacles and other marine
growth block ultraviolet rays.
"Every little piece of plastic manufactured in
the past 50 years that made it into the ocean is
still out there somewhere," Andrady said,
"because there is no effective mechanism to break
it down."
Oceanographers have counted on beachcombers
around the world to help them plot the course of
plastic flotsam as it circumnavigates the globe.
Ebbesmeyer has found that some debris gets hung
up for decades in gyres before being spun out
into different currents, flung ashore or picked
up by animals.
A piece of plastic found in an albatross stomach
last year bore a serial number that was traced to
a World War II seaplane shot down in 1944.
Computer models re-creating the object's odyssey
showed it spent a decade in a gyre known as the
Western Garbage Patch, just south of Japan, and
then drifted 6,000 miles to the Eastern Garbage
Patch off the West Coast of the U.S., where it
spun in circles for the next 50 years.
The Hawaiian archipelago, which stretches from
the Big Island of Hawaii westward for 1,500 miles
to Kure Atoll, acts like 19 unevenly spaced teeth
of a giant comb, snagging debris drifting around
the Pacific. Most of the archipelago's atolls are
awash in plastic junk, as are some beaches on the
main islands.
Native Hawaiians, seeking wood for dugout canoes,
used to go to Kamilo Beach at the southernmost
tip of the Big Island to collect enormous logs
that had drifted from the Pacific Northwest. Now,
locals like Noni Sanford pick through the debris
for novelties to enter in a trash-art show in
Hilo every fall.
Sanford, 58, a free-spirited great-grandmother
with long gray hair pulled back in a ponytail,
once won second place for a mobile fashioned out
of fishing line, floats and a colorful palette of
plastic toothbrushes.
As a lifelong beachcomber, she is fascinated and
horrified by the transformation of Kamilo Beach
since she first set foot there in 1959. She was
searching for driftwood with her father, a
sculptor.
She remembers seeing a few tires back then. Now,
plastic debris litters the crescent-shaped beach
for more than a mile.
"This is nothing," Sanford said, stepping over a
pile of twisted lines and nets. "This used to be
8 and 10 feet high. Of course, that was three or
four cleanups ago."
Sanford and her husband, Ron, have joined in
regular cleanup efforts, organized most recently
by Bill Gilmartin, a retired wildlife biologist
who studied monk seals.
"The rule is, don't pick up anything smaller than
your fist," Gilmartin told a team of volunteers.
"Otherwise, it'll take forever. We'll never be
done."
Noni Sanford reached down, scooped up a handful
of beach sand and let it trickle through her
fingers. Most of the grainy mix was bits and
pieces of plastic. The beach itself, it seemed,
was turning into plastic.
Cleanup efforts in Hawaii and elsewhere have
focused on "ghost nets," tangles of abandoned
fishing lines, nets and traps that snare and kill
marine life.
The National Oceanic and Atmospheric
Administration dispatches scuba divers every year
to cut tons of these deathtraps off Hawaiian
coral reefs. It's dangerous and costly work. In
July 2005, a 145-foot charter vessel brought in
to haul away nets ran aground on the reef at
Pearl and Hermes Atoll, about 100 miles from
Midway. The ship was lost. The Coast Guard flew
the 23 divers and crew 1,200 miles back to
Honolulu.
If it were easier to find them, it would make
sense to round up the medusas of nets and
synthetic lines at sea before they snagged on
coral reefs and endangered monk seals and other
coastal wildlife.
But the Pacific spans millions of square miles,
and even the debris circulating in the Eastern
and Western garbage patches is often diffuse and
hard to see, bobbing just below the surface.
Connecting the two patches is a ribbon of oceanic
highway that stretches 6,000 miles, an extension
of Japan's Kuroshio Current heading east.
Oceanographers call this the Subtropical
Convergence Zone, where the cold, green, heavier
waters from the north slide under the warm, blue
waters of the south.
A team of scientists working on NOAA's GhostNet
Detection Project suspected that flotsam
collected along this line, making it an ideal
place to concentrate cleanups. Yet they couldn't
be sure. They needed to see it.
The team got its chance last year, after
persuading NOAA to lend them an
instrument-packed, four-engine reconnaissance
plane often deployed to study hurricanes. Wearing
life jackets while flying 1,000 feet above the
ocean's surface, observers were positioned at
windows to spot nets and floats. They were to
call out each sighting over the plane's intercom.
Others were poised to jot down the location of
each sighting.
"When we got into it, we couldn't write fast
enough," said Tim Veenstra, an Alaskan pilot and
private researcher working with government
scientists. The meandering line of buoys, nets,
life rings, buckets and other castoffs stretched
for hundreds and hundreds of miles until the
airplane had to turn back.
"It was sort of a bittersweet feeling," Veenstra
said. "Sweet in the fact that what we had
postulated was proven true. Bitter in the fact
that there was actually that much debris floating
around."
Tuna fishermen have long known about the
convergence zone and the debris. They know that
fish like to congregate beneath anything that
floats.
Off the southern tip of the Big Island of Hawaii,
recreational fishermen like Guy Enriques will
race miles offshore to fish beneath the flotsam.
It's important to get close to the trash, but not
too close, Enriques explained, or the nets and
lines will wrap around a boat's propeller.
He said the best fishing was around what looked
like an enormous metal garage door floating just
below the water's surface. Even some charter boat
skippers learned of that one, Enriques recalled,
and took fishermen there day after day, until it
vanished.
But it wasn't a garage door. He and other
fishermen were looking at the top of an
8-by-40-foot cargo container that fell off a
ship. Such containers can float for as long as
nine months. Until they sink, they are the bane
of sailors in fiberglass boats who watch for them
like icebergs on the high seas.
Charles Moore, a member of the Hancock Oil
family, was on his way home from the Los
Angeles-to-Hawaii Transpacific Yacht Race in 1997
when he took a shortcut through the Eastern
Garbage Patch. It's a place that sailors usually
avoid because it lacks wind.
As he motored through on his 50-foot catamaran,
Moore was startled by what he saw thousands of
miles from land. "Every time I came on deck,
there was trash floating by," he said. "How could
we have fouled such a huge area? How could this
go on for a week?"
The experience changed Moore's life, turning him
from an adventurer into a self-taught scientist
and environmental activist.
Two years later, he returned to the garbage patch
with a volunteer crew to survey its contents. He
knew he would collect plenty of plastic bags,
bottle caps, nets and floats.
He didn't expect what turned up in a special net,
one with a tight mesh for collecting plankton,
the bottom link in the oceanic food chain.
Instead of plankton, it was choked with a
colorful array of tiny plastic fragments.
"It blew my mind," Moore said. "We are filling up
the oceans with this confetti stuff, and nobody
cares."
Over the last decade, Moore, 59, who lives in a
waterfront home in Long Beach, has spent his own
money and some from a family foundation on a
quest to track the plume of plastic so he can
figure out how to stop it.
On a cloudless spring day, Moore waded up to his
knees into the Los Angeles River in Long Beach
wearing shorts, sandals and a white hard hat. He
was tethered to a volunteer standing on the dry
riverbank, in case he slipped on the slick
concrete channel.
The Los Angeles River carries enough trash each
year to fill the Rose Bowl two stories high, and
despite efforts to corral some of it near the
river mouth, most slips through to the ocean.
Moore adjusted a trawlnet to collect trash
flowing downriver. At Moore's signal, a crane
operator lifted the net out of the water.
Volunteers swarmed around the trawlnet, extracted
the contents and loaded them into more than a
dozen jars.
The jars were filled with plastic pellets the
size and shape of pills. They come in all colors
and are the raw material for a vast array of
plastic products, from trash bags to medical
devices.
About 100 billion pounds of pellets are produced
every year and shipped to Los Angeles and other
manufacturing centers. Huge numbers are spilled
on the ground and swept by rainfall into gutters;
down storm drains, creeks and rivers; and into
the ocean.
>From his river sampling, Moore estimated that
>236 million pellets washed down the Los Angeles
>and San Gabriel rivers in three days' time. Also
>known as "nurdles" or mermaid tears, they are
>the most widely seen plastic debris around the
>world. They have washed ashore as far away as
>Antarctica.
The pellets, like most types of plastic, are
sponges for oily toxic chemicals that don't
readily dissolve in water, such as the pesticide
DDT and polychlorinated biphenyls, or PCBs. Some
pellets have been found to contain concentrations
of these pollutants 1 million times greater than
the levels found in surrounding water.
As they absorb toxic chemicals, they become
poison pills. Wildlife researchers have found the
pellets, which resemble fish eggs, in the bellies
of fish, sea turtles, seabirds and marine mammals.
Over time, plastic can break down into smaller
and smaller pieces, eventually turning to powder
and entering the ocean in microscopic fragments.
Some plastic starts out as tiny particles, such
as the abrasives in cleaning products that are
washed down the sink, through sewage systems and
out to sea.
The chemical components of plastics and common
additives can harm animals and humans. Studies
have linked the hormone-mimicking phthalates,
used to soften plastic, to reduced testosterone
and fertility in laboratory animals, and to
subtle changes in the genitals of baby boys.
Another additive, bisphenol A, used to make
lightweight, heat-resistant baby bottles and
microwave cookware, has been linked to prostate
cancer.
Moore has tried, without success, to get
manufacturers to improve their efforts to clean
up spills of pellets that wash off lots and into
storm drains. He considers beach cleanups a waste
of time, except to raise public awareness of the
problem. In his view, the cleanup has to start at
the source many miles inland.
To make that point, Moore tromped through rail
yards in Vernon and La Mirada. On the side of a
rail car a faded decal read "Operation Clean
Sweep." It had three check boxes:
"Keep Plastics Off Ground.
"Close and Lock Caps When Outlets Not in Use.
"Pick Up All Spills."
Beneath the sign was a cone-shaped pile of
pellets, as white as freshly fallen snow. Moore
shuffled his sandaled feet through another drift
nearby.
"This is a plastic sand dune," he said. "It's
very slippery, very roly-poly. What makes them so
good for the factory makes them good for getting
into the ocean."
Times staff writer Usha Lee McFarling contributed to this report.
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