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A Norwegian archipelago halfway between the Scandinavian country and the North Pole, Svalbard is known for its rugged beauty as well as its remoteness. from your village LongyearbyenVisitors and approximately 2,400 residents can appreciate the rugged terrain surrounding the fjord known as the Adventfjorden.
But the beauty of this Arctic entry hides more complex, microscopic secrets.
“People see this beautiful, clean, white landscape,” said Claudia Halsband, a marine ecologist in Tromso, Norway, “but that’s only part of the story.”
The fjord has a pretty big problem with fine litter—namely, microfibers, a wavy subset of microplastics that are stripped away from synthetic fabrics. Microfibers are popping up everywhere, and there’s a growing awareness among researchers that sewage helps spread them, he said. Ocean pollution scientist Peter S. Ross, who studies the plastics polluting the Arctic. While the precise impact of microfibers forming in ecosystems remains a matter of debate, tiny Longyearbyen dumps an extraordinary amount of them down the drain: A new study has found that thousands of villages roughly as much as all the microplastics emitted from one side Wastewater treatment plant near Vancouver serving approximately 1.3 million people.
Findings published this summer, Frontiers in Environmental Science journalHighlight the hidden effects that Arctic communities can have on surrounding waters, as well as the large emissions of microfibers that can be produced by even small populations through untreated sewage.
The Adventfjorden’s microfibers come from a sunken tube that stretches into the fjord like an arm bent at the elbow. It spits out the community’s untreated sewage – urine and feces, as well as kitchen sinks and suds from showers and washing machines. Around the world, small or isolated communities are grappling in a variety of ways, from collecting sewage in septic tanks to relying on compost toilets. In Longyearbyen, waste mixes in a single pumping station no larger than an annex and then reaches the fjord through tubes winding over the frozen ground.
“People think out of sight, out of mind; the ocean will take care of it, but these things are piling up,” said Dr. Halsband.
Curious about the garbage that is not immediately visible to the naked eye, Dr. Halsband and four collaborators sampled wastewater for microfibers for a week each in June and September 2017, and then modeled how small pieces might float around the fjord.
“It didn’t smell as bad as we feared, but there were floaters,” said Dorte Herzke, a chemist at the Norwegian Institute of Air Research and lead author of the paper.
In the lab, the researchers filtered and sorted the samples. Not equipped to identify the fibers as synthetic or organic, the team discarded anything clear or white that could be cellulose. Still, especially in the September instances, Dr. Lots of pieces remain, including dark colors from outdoor equipment, Herzke said. (Previous research has shown that outerwear such as synthetic fleece tendency to spill microfibers in washing machines.)
From these counts, the researchers estimate that the community drains at least 18 billion microfibers into the fjord each year—roughly 7.5 million per person.
To begin to understand what happened to the lice in the Adventfjorden, the team modeled where microfibers might accumulate and which species might encounter them. The researchers calculated that the lightest microfibers would remain suspended near the surface and within days would leave the fjord and disperse over wider waters. The heavier ones sink to the bottom or clump near the sewer pipe or inland shore, which are habitats for plankton, bivalves, and blood-red worms.
Deonie and Steve Allen, married microplastics researchers at the University of Strathclyde in Scotland and Dalhousie University in Nova Scotia, praised the paper’s model and said in an email that it supports the results of “truly local and timely field data and sampling.” But they said it would also benefit from chemical analysis, an opinion also voiced by Sonja Ehlers, a microplastics researcher at the University of Koblenz-Landau in Germany. Ms Ehlers said she would also like to see the team document how local creatures interact with microfibers.
Dr. Halsband suspects they have consumed the cast. “We know they don’t discriminate against plastic,” he said, adding that the team is also keen to find out if the fibers will keep the plankton’s appendages from snarling and drifting.
The researchers returned to the fjord last summer and collected samples to check the model’s predictions. These samples are in a freezer and will be subjected to chemical analysis.
The scientists hope their work will prompt Arctic communities to consider new ways of managing sewage and hitchhiking garbage.
“Norway has a lot of fjords,” said Dr. Herzke and Adventfjorden are certainly not the only places speckled with excrement and small pieces of garbage. This makes it a useful case study. “Once we understand that,” added Dr. “We can understand others,” Herzke said.
Dr. Where comprehensive sewage treatment isn’t possible, Halsband said, communities may consider basic filtration, promoting wool alternatives to synthetics and reducing further wear between washes.
As for Longyearbyen, the researchers said they will soon introduce filtering to catch large spills. This can also block some small parts – maybe even downright teeny ones.
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