Plastic junk spawns desert island disaster in Pacific

A pile of collected fishing bouys on a beach on Henderson Island, an uninhabited part of the Pitcairn archipelago in the South P
A pile of collected fishing bouys on a beach on Henderson Island, an uninhabited part of the Pitcairn archipelago in the South Pacific Ocean

Floating plastic garbage has swamped a remote Pacific island once regarded as an environmental jewel and scientists say little can be done to save it while a throwaway culture persists.

Henderson Island is an uninhabited coral atoll that lies almost exactly halfway between New Zealand and Peru, with 5,500 kilometres (3,400 miles) of ocean in either direction.

Despite its extreme isolation, a freak confluence of geography and ocean currents means Henderson has one of the highest concentrations of plastic pollution on the planet.

"We found debris from just about everywhere," said Jennifer Lavers, an Australian-based researcher who led an expedition to the island last month.

"We had bottles and containers, all kinds of fishing stuff and it had come from, well, you name it—Germany, Canada, the United States, Chile, Argentina, Ecuador.

"It was a real message that every country has a responsibility to protect the environment, even in these remote areas."

Henderson lies at the centre of the South Pacific gyre, a vast circular ocean current that runs anti-clockwise down the east coast of Australia and up the west coast of South America.

The gyre should be a boon for the 10-kilometre-by-five speck of land, carrying rich nutrients into the waters surrounding Henderson to feed huge colonies of sea birds.

Hub of South Pacific Garbage Patch
Map locating Henderson Island in the southern Pacific Ocean, which, despite its remote location, has one of the highest concentrations of plastic pollution on the planet.

The atoll's ecosytem is so rich that Henderson was included on the UN World Heritage List in 1988, with the body hailing it as an untouched paradise.

"As one of the last near-pristine limestone islands of significant size in the world, Henderson Island retains its exceptional natural beauty with its white, sandy beaches, limestone cliffs, and rich and almost undisturbed vegetation," it said.

South Pacific garbage patch

But three decades later, the gyre has become a marine conveyor belt dumping endless waves of plastic detritus onto Henderson's coast, making it the hub of what has become known as the South Pacific Garbage Patch.

Two masked boobies walk among rubbish at the high-tide mark on Henderson Island
Two masked boobies walk among rubbish at the high-tide mark on Henderson Island

Lavers led her first expedition there in 2015 and on the island's East Beach found there were about 700 items of plastic per square metre, one of the highest concentrations found anywhere in the world.

Compounding the problem, the churning waves have reduced more than half the waste to tiny particles almost invisible to the human eye, making them impossible to clean up but easily digested by wildlife such as birds and turtles.

Lavers organised a clean-up effort on her most recent trip to the island last month and her team collected six tonnes of plastic garbage from the beach over two gruelling weeks.

They were unable to take away the rubbish because their ship could not find a safe mooring on the rugged coastline, instead storing it above the high-tide line for future removal.

A beach clean-up team member collecting rubbish on Henderson Island
A beach clean-up team member collecting rubbish on Henderson Island

Lavers admitted it was "heartbreaking" to make such a mammoth effort only to see more garbage floating ashore where they had just cleaned.

"We'd be having our lunch and watching it replenish in real time as things like buoys and bits of rope washed onto the beach," she said.

The marine scientist, who plans further trips to Henderson in 2020 and 2021, said the experience underlined the fact that clean-ups were not a long-term solution to the ocean's pollution crisis.

In just thirty years, Henderson Island's pristine beaches have become badly polluted by plastic waste
In just thirty years, Henderson Island's pristine beaches have become badly polluted by plastic waste

"It just speaks to the importance of shutting off the tap at the source," she said, calling for tighter restrictions on single-use plastics.

"There's already so much debris in the oceans, we really need to do all we can to prevent any more getting out there."


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© 2019 AFP

Citation: Plastic junk spawns desert island disaster in Pacific (2019, July 30) retrieved 14 October 2019 from https://phys.org/news/2019-07-plastic-junk-spawns-island-disaster.html
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Jul 30, 2019
"almost exactly," really? Must be a journo graddiate.

Jul 30, 2019
This is the pollution we can see. The stuff we can't see is far worse. We eat it, breathe it, it gets ground into our skin. It accumulates in our organs. There is no fixing it, no recovering from it.

Time to emigrate.

The enthusiasm for transport vehicles to other planets is beginning to look a lot like an evacuation. Musk and others are developing many technologies essential to permanent colonization; batteries, borers, brain/machine interface, sat constellation communication systems.

Time to buy your ticket, get in line. I hear mars is beautiful this time of year. No plastic, no smog, no nanogrit, no contageons.

Jul 30, 2019
There is a building in central Jersey with a huge open central space flanked by office and commercial facilities - Bell Works. Office, retail, restaurants, schools, public library, all entirely contained and isolated from the outside. No residential (as yet).

Walking through it one can imagine it as the kind of space we could create beneath the Martian regolith. Honeycomb a cubic kilometer with tunnelers, set off a few plowshares nukes, and poof! instant void suitable for a new city. Living, working underground, lakes, parks, preserves... industry up on the surface where it belongs.

The opposite of the Time Machine - eloi underground, morlock machines on the surface where they belong. Mars loves machines as our rovers have taught us. Industry and its contaminants can be kept entirely isolated from habitable space. No beautiful islands covered with garbage

Jul 30, 2019
This is the pollution we can see. The stuff we can't see is far worse. We eat it, breathe it, it gets ground into our skin. It accumulates in our organs. There is no fixing it, no recovering from it.

Time to emigrate.

The enthusiasm for transport vehicles to other planets is beginning to look a lot like an evacuation. Musk and others are developing many technologies essential to permanent colonization; batteries, borers, brain/machine interface, sat constellation communication systems.

Time to buy your ticket, get in line. I hear mars is beautiful this time of year. No plastic, no smog, no nanogrit, no contageons.


Enjoy that interplanetary radiation!
I will stay here and try to clean up my place.

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