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Category: Ecology

The Arctic and Atlantic oceans are merging. It could be disastrous

The Arctic and Atlantic oceans are merging. It could be disastrous

William von Herff writes: In the Fram Strait off Greenland’s west coast, Véronique Merten encountered the foot soldiers of an invasion. Merten was studying the region’s biodiversity using environmental DNA, a method that allows scientists to figure out which species are living nearby by sampling the tiny pieces of genetic material they shed, such as scales, skin, and feces. And here, in a stretch of the Arctic Ocean 400 kilometers north of where they’d ever been seen before: capelin. And…

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The Amazon river in the sky

The Amazon river in the sky

Daniel Henryk Rasolt writes: High in the Andes Mountains, the mighty Amazon River begins. It trickles from glaciers and oozes from mountain wetlands. It gains momentum and volume and feeds into clear streams and muddy rivers that pass through high cloud forests and lowland valleys. The torrents of the waters carry nutrients through the vast Amazon River basin, some 4,000 miles across the rest of the South American continent. At the same time, in the rainforest and delta estuaries, another,…

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A shocking number of birds are in trouble

A shocking number of birds are in trouble

Emily Sohn writes: The North American Breeding Bird Survey, organized by the US Geological Survey and Environment Canada, has enlisted thousands of participants to observe birds along roadsides each June since 1966. Audubon’s Christmas Bird Count, which began in 1900, encourages people to join a one-day bird tally scheduled in a three-week window during the holiday season. There are shorebird censuses and waterfowl surveys, all powered by citizen scientists. This wealth of longitudinal recordings started to turn up signs of distress as…

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The Kakhovka Dam collapse is an ecological disaster

The Kakhovka Dam collapse is an ecological disaster

Chris Baraniuk writes: A push notification news alert on his phone, then images of the deluge—that’s how Heorhiy Veremiychyk learned of the disaster. With water pouring through the stricken Kakhovka Dam in the Kherson region of Ukraine, he immediately understood the enormity of what had happened. “The water raised very sharply,” he says, referring to the terrible effects on wildlife downstream. “There was no possibility to escape.” Veremiychyk, of the National Ecological Center of Ukraine (NECU), says the impact of…

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Merlin Sheldrake wants us to understand the genius of fungi

Merlin Sheldrake wants us to understand the genius of fungi

Jennifer Kahn writes: One evening last winter, Merlin Sheldrake, the mycologist and author of the best-selling book “Entangled Life,” was headlining an event in London’s Soho. The night was billed as a “salon,” and the crowd, which included the novelist Edward St. Aubyn, was elegant and arty, with lots of leggy women in black tights and men in perfectly draped camel’s-hair coats. “Entangled Life” is a scientific study of all things fungal that reads like a fairy tale, and since…

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Nearly 20% of the cultural differences between societies boil down to ecological factors – new research

Nearly 20% of the cultural differences between societies boil down to ecological factors – new research

How much of a culture could be due to things like the grain it traditionally grew? Visoot Uthairam/Moment via Getty Images By Alexandra Wormley, Arizona State University and Michael Varnum, Arizona State University In some parts of the world, the rules are strict; in others they are far more lax. In some places, people are likely to plan for the future, while in others people are more likely to live in the moment. In some societies people prefer more personal…

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Discovered in collections, many new species are already extinct

Discovered in collections, many new species are already extinct

Katarina Zimmer writes: It could have been a scene from Jurassic Park: ten golden lumps of hardened resin, each encasing insects. But these weren’t from the age of the dinosaurs; these younger resins were formed in eastern Africa within the last few hundreds or thousands of years. Still, they offered a glimpse into a lost past: the dry evergreen forests of coastal Tanzania. An international team of scientists recently took a close look at the lumps, which had been first…

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Tackling plastic pollution: ‘We can’t recycle our way out of this’

Tackling plastic pollution: ‘We can’t recycle our way out of this’

France 24 reports: The scale of plastic pollution is growing, relentlessly. The world is producing twice as much plastic waste as two decades ago, reaching 353 million tonnes in 2019, according to OECD figures. The vast majority goes into landfills, gets incinerated or is “mismanaged”, meaning left as litter or not correctly disposed of. Just 9 percent of plastic waste is recycled. Ramping up plastic recycling might seem like a logical way to transform waste into a resource. But recent…

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Lessons from the Laschamps Excursion 42,000 years ago

Lessons from the Laschamps Excursion 42,000 years ago

Dirk Schulze-Makuch writes: After studying the reversal of Earth’s magnetic pole known to have occurred 42,000 years ago, a science team led by Alan Cooper from the South Australian Museum in Adelaide, Australia concludes that the event had significant environmental repercussions, especially at lower and mid-latitudes. That time period, known as the Laschamps Excursion, had anomalously high radiocarbon concentrations in the atmosphere, which were linked to a higher influx of radiation. When the reversal occurred, within a span of about…

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How to mourn a forest. A lesson from West Papua

How to mourn a forest. A lesson from West Papua

Sophie Chao writes: One torrid afternoon, I journeyed with an Indigenous Marind woman and her family to a patch of razed forest at the edge of the plantation frontier, where workers had cleared the way for oil palm trees. Her name was Circia*. A mother of three in her late 50s, Circia was imposing, but her footsteps were gentle, almost silent when she led us across the wet soils of Merauke, a district in the Indonesian-controlled western half of New…

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As ocean oxygen levels dip, fish face an uncertain future

As ocean oxygen levels dip, fish face an uncertain future

Nicola Jones writes: Off the coast of southeastern China, one particular fish species is booming: the oddly named Bombay duck, a long, slim fish with a distinctive, gaping jaw and a texture like jelly. When research ships trawl the seafloor off that coast, they now catch upwards of 440 pounds of the gelatinous fish per hour — a more than tenfold increase over a decade ago. “It’s monstrous,” says University of British Columbia fisheries researcher Daniel Pauly of the explosion…

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Bees can learn, remember, think and make decisions – here’s a look at how they navigate the world

Bees can learn, remember, think and make decisions – here’s a look at how they navigate the world

A bumblebee lands on the flowers of a white sloe bush. Soeren Stache/picture alliance via Getty Images By Stephen Buchmann, University of Arizona As trees and flowers blossom in spring, bees emerge from their winter nests and burrows. For many species it’s time to mate, and some will start new solitary nests or colonies. Bees and other pollinators are essential to human society. They provide about one-third of the food we eat, a service with a global value estimated at…

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The oceans are missing their rivers

The oceans are missing their rivers

Erica Gies writes: Gazing out from the eighth floor of a hotel in Georgetown, Guyana, the broad expanse of the Atlantic Ocean was a muddy brown. Only a thin rim of blue on the horizon showed the ocean’s true color; the rest swirled with sediment emerging from the mouth of the Essequibo River. In a rhythm that’s pulsed through epochs, a river’s plume carries sediment and nutrients from the continental interior into the ocean, a major exchange of resources from…

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Phosphorus saved our way of life — and now threatens to end it

Phosphorus saved our way of life — and now threatens to end it

Elizabeth Kolbert writes: In the fall of 1802, the German naturalist Alexander von Humboldt arrived in Callao, Peru’s major port, just west of Lima. Humboldt had timed his visit to coincide with a transit of Mercury, which he planned to observe through a three-foot telescope, in order to determine Lima’s longitude. He set up his instruments atop a fort on the waterfront, and then, with a few days to kill before the event, wandered the docks. A powerful stench emanating…

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Video: Alexander Skarsgård, Partha Dasgupta and the answer to everything

Video: Alexander Skarsgård, Partha Dasgupta and the answer to everything

  Partha Dasgupta is a Cambridge University economist who in 2021 prepared a more than 600-page report for the British government about the financial value of nature. Not your average bedtime reading. But believe us when we say his report, the culmination of decades of scholarship, is incredibly important. Or at least believe the United Nations, which awarded him the title Champion of the Earth for his work. Or King Charles III, who this year made Mr. Dasgupta a Knight…

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‘Rewilding’ parts of the planet could have big climate benefits

‘Rewilding’ parts of the planet could have big climate benefits

Bob Berwyn writes: Restoring populations of land and marine animals in targeted “rewilding” zones would speed up biological carbon pumps that remove carbon dioxide from the air and sequester the greenhouse gas where it doesn’t harm the climate, new research shows. An international team of scientists focused the study on marine fish, whales, sharks, gray wolves, wildebeest, sea otters, musk oxen, African forest elephants and American bison as species, or groups of species, that accelerate the carbon cycle. Collectively, they “could facilitate…

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