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Author Topic: Consequences of using plastics  (Read 15975 times)

kassy

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Re: Consequences of using plastics
« Reply #50 on: August 19, 2020, 03:23:01 PM »
Microplastic in Atlantic Ocean 'could weigh 21 million tonnes'


There are 12-21 million tonnes of tiny plastic fragments floating in the Atlantic Ocean, scientists have found.

A study, led by the UK's National Oceanography Centre, scooped through layers of the upper 200m (650ft) of the ocean during a research expedition through the middle of the Atlantic.

Such an amount of plastic - 21 million tonnes - would be enough to fully load almost 1,000 container ships.

The findings are published in the journal Nature Communications.

Dr Katsia Pabortsava, from the National Oceanography Centre, who led the study, said by measuring the mass of very small plastic particles in the top 5% of the ocean, she and her colleagues could estimate "the load of plastic in the entire Atlantic" which is "much larger" than the previous figure.

"Previously, we haven't been able to balance the amount of plastic we found in the ocean with the amount we thought we had put in," she said.

"That's because we weren't measuring the very smallest particles."

https://www.bbc.com/news/science-environment-53786555

Almost as invisble as CO2 but this is more preventable dirt our children and grandchildren etc have to bath in.
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

vox_mundi

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Re: Consequences of using plastics
« Reply #51 on: August 31, 2020, 11:28:21 PM »
Rubber Debris Litters Miles of Puyallup River After Artificial Turf Was Used In Dam Project Without Permit
https://phys.org/news/2020-08-rubber-debris-litters-miles-puyallup.html



... According to the consultant's report, the company, as part of its work on a bypass channel at the dam, placed 2,409 square yards of FieldTurf—each piece about the size of a fat coffee ground—on the channel between July 20 and 27. The turf was intended to function as an underlayment for a plastic liner put on top of it. The company then diverted the river into the bypass channel to create a dry area to continue ongoing work at its dam.

The night of July 29, the diverted river—well known for its rock-chucking high flows—ripped pieces of the liner and turf loose, sending hunks of artificial turf and a torrent of loose black crumb rubber downriver.

The consultant estimated the rate of travel in the water at 2 mph. The rubber probably reached Orting within nine hours, and Tacoma and Commencement Bay within 20 hours. The river would have deposited crumb rubber all along the way, a distance of some 40 miles, in channel margins, in deep pools, in coves and river bends, and continued redistributing it ever since. Rubber debris already is likely more than 40 miles downriver in Puget Sound.



... On a visit to the river Thursday with The Seattle Times, Sylvia Miller, vice chairwoman of the Puyallup Tribal council, said she was sick at heart because of the spill.

"I feel anger, so much anger," Miller said. "It hurts to see how much damage they are doing to our lands and waters, everyone's lands and waters."

Everywhere he looked for it along the river, Russ Ladley, resource protection manager for the Puyallup Tribe, saw crumbs of black rubber. Immediately downstream of the dam, it lay in streaks of black on the beach. Fourteen miles down river, there it was again, in black nubby necklaces around rocks, in bands along the shore, in heaps on the river's sandy bank.

... For Bill Sterud, chairman of the Puyallup Tribe, the rubber spill is personally painful.

"To me, my church is the river. It is the sound. It is the mountain. It is the forest. And when I see this degrading take place it affects me internally. It hurts."




... The question now is how to clean up the mess, just weeks before adult chinook salmon listed for protection under the federal Endangered Species Act are expected to arrive on their homeward journey

This was not the first trouble at Electron Dam.

Fish and Wildlife reported a fish kill on the river the same day, as Electron Hydro dewatered a stretch of the river during routine maintenance at its dam, causing what the department described as "a large fish kill, resulting in the loss of ESA-listed species, including Chinook, and bull trout, along with coho, rainbow trout, cutthroat trout, and sculpin."

... The Puyallup originates in glaciers along the slopes of Mount Rainier in the Cascades. It flows about 65 miles to Commencement Bay and forms the third largest tributary to Puget Sound.

The river flows through the reservation of the Puyallup Tribe, which has fished and lived along its waters since time immemorial. The river is home to eight ocean-migrating fish populations, including chinook, coho, chum, pink and sockeye salmon, steelhead trout, bull trout and sea-run cutthroat trout.

Historically the river supported as many as 42,000 chinook. The run is greatly diminished today to a little more than 1,000 fish and was listed for protection in 1999 under the ESA.

Chinook from the river are critical to endangered southern resident killer whales, which primarily feed on chinook.
« Last Edit: August 31, 2020, 11:48:40 PM by vox_mundi »
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late