Anthropocene Epoch

Groundwater Springs & Habitat

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A spring in a forest in Bavaria, Germany.

A spring in a forest in Bavaria, Germany. IMAGEBROKER.COM GMBH & CO. KG / ALAMY STOCK PHOTO

Thanks to Yale e360 for publishing this article by Christian Schwägerl, whose influential book The Anthropocene was published one decade ago:

As World’s Springs Vanish, Ripple Effects Alter Ecosystems

Springs, which bring groundwater to the surface and support a host of unique species, are disappearing globally, victims of development and drought. Researchers are working to document and map these life-giving habitats in an effort to save them before they are gone.

A tufa spring in the Neumarkt region in Bavaria, Germany.

A tufa spring in the Neumarkt region in Bavaria, Germany. CHRISTIAN SCHWÄGERL

Strong winds sweep over the Rhön, a vast region of rolling, forested hills and pastureland in central Germany. Undeterred, Stefan Zaenker, leading a group of four volunteers, runs through his checklist alongside a forest road. Are rubber boots disinfected to prevent introducing potentially harmful microorganisms into the wetland? Are the team app and GPS functioning correctly? Have enough flags been packed?

Left: A flag marks a helocrene spring in the Rhön region of Germany. Right: Stefan Zaenker takes a sample from a spring.

Left: A flag marks a helocrene spring in the Rhön region of Germany. Right: Stefan Zaenker takes a sample from a spring. CHRISTIAN SCHWÄGERL

When all is in order, Zaenker, 56, leads the group into a soggy alder forest. Its mission for the day: to locate and map as-yet-undiscovered springs and document any species inhabiting them.

A senior conservation official for the state of Hesse, Zaenker considers springs so important for human life and biodiversity that he — along with volunteers from the Hesse Association for Cave and Karst Research — spends much of his spare time conducting large-scale searches for them in the Rhön, which includes the German states of Bavaria, Thuringia, and Hesse, and in a nearby national park. Continue reading →

Are We Anthropocenic Or Not?

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Art works by Aletheia Casey

Thanks, as always, to Elizabeth Kolbert for illumination on this mystery:

The “Epic Row” Over a New Epoch

Scientists, journalists, and artists often say that we live in the Anthropocene, a new age in which humans shape the Earth. Why do some leading geologists reject the term?

A few months into the third millennium, a group called the International Geosphere-Biosphere Programme (I.G.B.P.) held a meeting in Cuernavaca, Mexico. Among the researchers in attendance was Paul Crutzen, an atmospheric chemist best known for his research on ozone-depleting chemicals, such as chlorofluorocarbons. Continue reading →

Holocene Age Prevails

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Four people standing on the deck of a ship face a large, white mushroom cloud in the distance.

In weighing their decision, scientists considered the effect on the world of nuclear activity. A 1946 test blast over Bikini atoll. Jack Rice/Associated Press

Yesterday we learned that scientists declined the invitation to officially declare us in a new age:

A panel of experts voted down a proposal to officially declare the start of a new interval of geologic time, one defined by humanity’s changes to the planet.

The Triassic was the dawn of the dinosaurs. The Paleogene saw the rise of mammals. The Pleistocene included the last ice ages.

Is it time to mark humankind’s transformation of the planet with its own chapter in Earth history, the “Anthropocene,” or the human age?

Not yet, scientists have decided, after a debate that has spanned nearly 15 years. Or the blink of an eye, depending on how you look at it. Continue reading →

Anthropocene Representative Location

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A wide view of a lake with trees surrounding it and blue sky with clouds in distance. We now have a place to match to the name for our epoch:

The Human Age Has a New Symbol. It’s a Record of Bomb Tests and Fossil Fuels.

A scientific panel has picked Crawford Lake, Ontario, to represent the Anthropocene, a proposed, and hotly contested, new chapter in geologic time.

For almost 15 years, a panel of scholars has been chewing over a big question: Has our species transformed the planet so much that we have plunged it into a new interval of geologic time? Continue reading →

Anthropocene’s Marker

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The Ediacaran Period, which ended some 540 million years ago, is marked by a gold spike in the Flinders Ranges of South Australia. JAMES ST. JOHN

We do not love the word Anthropocene, but we appreciate the marker it represents. And until now we did not know there would be a physical counterpart, a marker that will be placed in a representative location:

A Golden Spike Would Mark the Earth’s Next Epoch: But Where?

Before the Anthropocene can be officially proclaimed, a scientific working group must select a single site that permanently captures the new human-influenced epoch. Nine candidate sites — from California to China to Antarctica — are under consideration, with a decision expected soon.

The peatland below Poland’s Mount Śnieżka contains contaminants from burning fossil fuels, nuclear testing, and other human activities. MYSTICWALKER / ALAMY STOCK PHOTO

At first glance, these nine sites scattered across the globe seem unremarkable. Continue reading →

Embracing Anthropocene

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Image credits: Alamy; David Guttenfelder for The New York Times; Getty Images; Ashley Gilbertson for The New York Times; Michael Probst/Associated Press; Getty Images; NASA

We have been using this terminology already for more than a decade, thinking it was apt enough to be official:

For Planet Earth, This Might Be the Start of a New Age

A panel of experts has spent more than a decade deliberating on how, and whether, to mark a momentous new epoch in geologic time: our own.

The official timeline of Earth’s history — from the oldest rocks to the‌ dinosaurs to the rise of primates, from the Paleozoic to the Jurassic and all points before and since — could soon include the age of nuclear weapons, human-caused climate change and the proliferation of plastics, garbage and concrete across the planet. Continue reading →

Botanical Migration

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Ponderosa pine, now widely distributed in North America, were exceedingly rare during the last ice age. WOLFGANG KAEHLER / GETTY IMAGES

Thanks to Zach St. George for this:

As Climate Warms, a Rearrangement of World’s Plant Life Looms

Previous periods of rapid warming millions of years ago drastically altered plants and forests on Earth. Now, scientists see the beginnings of a more sudden, disruptive rearrangement of the world’s flora — a trend that will intensify if greenhouse gas emissions are not reined in. Continue reading →

Stewarding Species & Ecosystems

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Kawesqar National Park in Patagonia, Chile, is regarded as one of the world’s few remaining intact wild lands. ANTONIO VIZCAÍNO / WWW.PARQUESNACIONALES.CL

Yesterday’s news from Brazil was dismal, providing a how-not-to stewardship example. Today we link to Fred Pearce’s article in Yale e360 about alternative, and more positive examples of stewardship, with a question at the center of the story:

Species or Ecosystems: How Best to Restore the Natural World?

What’s the best way to protect nature and restore what has been lost? A series of new scientific papers offer conflicting views on whether efforts should focus on individual species or ecosystems and point to the role human inhabitants can play in conserving landscapes.

Wildebeest on the Serengeti plain during their annual migration. ALEX BRAMWELL / ALAMY STOCK PHOTO

The Serengeti plain of East Africa is one of the world’s great wild lands — teeming with lions, leopards and migrating wildebeest. But is it ecologically intact, a rare fragment of the earth unaltered by the hand of humanity? Or is it, as many researchers argue, a human-created landscape, nurtured by generations of Maasai cattle herders? Continue reading →

A Different Kind Of Getting Clear

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A flock of red-winged blackbirds over Long Island, N.Y.CreditCreditVicki Jauron, Babylon and Beyond Photography/Moment, via Getty Images

Thanks to the authors of this op-ed for a bit of clear thinking:

The Crisis for Birds Is a Crisis for Us All

The mass disappearance of North American birds is a dire warning about the planet’s well-being.

By John W. Fitzpatrick and Peter P. Marra

Dr. Fitzpatrick is the director of the Cornell Lab of Ornithology. Dr. Marra is the director of the Georgetown Environment Initiative.

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Steve Maslowski/Science Source, via Getty Images Plus

Nearly one-third of the wild birds in the United States and Canada have vanished since 1970, a staggering loss that suggests the very fabric of North America’s ecosystem is unraveling.

The disappearance of 2.9 billion birds over the past nearly 50 years was reported today in the journal Science, a result of a comprehensive study by a team of scientists from seven research institutions in the United States and Canada.

As ornithologists and the directors of two major research institutes that directed this study, even we were shocked by the results. We knew of well-documented losses among shorebirds and songbirds. But the magnitude of losses among 300 bird species was much larger than we had expected and alarmingly widespread across the continent. Continue reading →

Underland, Reviewed

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Armando Veve

Robert Macfarlane first came to my attention in Ethiopia a few years ago. And then again the following year while in India. And now I see where it was all leading, in the form of a book, to see what is beneath our feet, reviewed here:

McfarlaneYou know a book has entered your bloodstream when the ground beneath your feet, once viewed as bedrock, suddenly becomes a roof to unknown worlds below. The British writer Robert Macfarlane has written such a book. “Underland: A Deep Time Journey” is an epic exploration and examination of darkness and the caverns underground that have captured our imaginations, pulled us downward, housed our dead and allowed us to bury our most violent secrets. It is also a descent into the beauty where dark wisdom is located.

Macfarlane divides his explorations into three sections, or “chambers,” devoted to “Seeing,” “Hiding” and “Haunting.” As he moves through them, he will take us to ancient barrows in Britain’s Mendip Hills, the understory of the Epping Forest and a physics lab investigating “dark matter” from deep within a coastal Yorkshire mine. He will guide us through underground rivers in Italy and show us the pictographs known as “the red dancers” found in Norwegian sea caves.

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London’s Epping Forest in the autumn.CreditDavid Levene/evevine, via Redux

Macfarlane homes in on “something seemingly paradoxical: that darkness might be a medium of vision, and that descent may be a movement toward revelation rather than deprivation.” Night vision becomes an essential strategy for survival in the Anthropocene, the new epoch we find ourselves in, which registers the human press on the planet as a geologic force. “For more than 15 years now,” Macfarlane explains, “I have been writing about the relationships between landscape and the human heart. What began as a wish to solve a personal mystery — why I was so drawn to mountains as a young man that I was, at times, ready to die for love of them — has unfolded into a project of deep-mapping.” Continue reading →

“Arks of the Apocalypse”

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U.S. National Ice Core Laboratory, Lakewood, Colo. photo credit: Spencer Lowell for The New York Times

Thanks again to the New York Times for highlighting the global nature of this scientific “call to arms” to save not only data, but genetic and organic material as a back-up plan for future generations. From the Svalbard Global Seed bank in Norway, to sperm banks for coral, endangered wildlife, and even glacial ice – these archives are meant to provide both a life line to the future and answers about the past.

The fragility of each project is evident as Science itself has come under attack from current public policy, which doesn’t appear to see the irony of their denial in the face of facts about climate change.

It was a freakishly warm evening last October when a maintenance worker first discovered the water — torrents of it, rushing into the entrance tunnel of the Svalbard Global Seed Vault, a storage facility dug some 400 feet into the side of a mountain on a Norwegian island near the North Pole. A storm was dumping rain at a time of year when the temperature was usually well below freezing; because the water had short-circuited the electrical system, the electric pumps on site were useless. This subterranean safe house holds more than 5,000 species of essential food crops, including hundreds of thousands of varieties of wheat and rice. It was supposed to be an impenetrable, modern-day Noah’s ark for plants, a life raft against climate change and catastrophe.

A few Norwegian radio stations and newspapers reported the incident at the time, but it received little international attention until May, when it was becoming clear that President Trump was likely to pull the United States out of the Paris climate agreement. Suddenly the tidings from Svalbard were everywhere, in multiple languages, with headlines like “World’s ‘Doomsday’ Seed Vault Has Been Breached by Climate Change.” It didn’t matter that the flood happened seven months earlier, or that the seeds remained safe and dry. We had just lived through the third consecutive year of the highest global temperatures on record and the lowest levels of Arctic ice; vast swaths of permafrost were melting; scientists had recently announced that some 60 percent of primate species were threatened with extinction. All these facts felt like signposts to an increasingly hopeless future for the planet. And now, here was a minifable suggesting that our attempts to preserve even mere traces of the bounty around us might fall apart, too.

Continue reading →

Walden Pond’s Enduring Lessons

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Kevin Hooyman

When a professor does years of research and teaching on a topic related to this particular pond, and then takes the additional effort to share his observations in cogent form as an op-ed, we believe it is worth at least 5-10 minutes of reading time:

What the Muck of Walden Pond Tells Us About Our Planet

By CURT STAGER

In 1845, Henry David Thoreau repaired to a cabin in the woods beside Walden Pond “to front only the essential facts of life, and see if I could not learn what it had to teach.” During the last two years, my students and I have come to that same pond to see what we could learn from the sediments beneath it. Continue reading →