Tree Core Samples & Age Estimations

Tree cores Harvard Forest

Core samples may hold clues to a forest’s response to climate change. Photos by Stephanie Mitchell/Harvard Staff Photographer

Juan Siliezar, staff writer for the Harvard Gazette asks and answers a question that we never tire of:

Want to know how cold it was in 1490? Ask a tree

Harvard Forest Senior Ecologist Neil Pederso

“We use tree cores to extract what I’ve been leaning toward calling the memory of the tree,” said Neil Pederson in the lab alongside core samples.

Sometimes getting to where you want to go is a matter of finding the right guide.

Four teams of researchers, led by Harvard Forest ecologists, searched for a patch of ancient trees deep in the woods of western Pennsylvania this summer as part of a project to study how climate changes affected trees over the centuries. One of the scientists had come across them 40 years earlier, but they appeared to have vanished. Just as the group was about to give up and move on they came across someone who gave them a valuable clue. Continue reading

Will More Forests Cool The Planet Fast Enough?

Thanks to Fred Pearce, who we normally link to at Yale e360, for The Forest Forecast, an article in the current issue of Science magazine:

Climate change could lead to a net expansion of global forests. But will a more forested world actually be cooler?

These are strange times for the Indigenous Nenets reindeer herders of northern Siberia. In their lands on the shores of the Arctic Ocean, bare tundra is thawing, bushes are sprouting, and willows that a generation ago struggled to reach knee height now grow 3 meters tall, hiding the reindeer. Surveys show the Nenets autonomous district, an area the size of Florida, now has four times as many trees as official inventories recorded in the 1980s. Continue reading

The World’s Largest Living Thing

The world’s largest living thing is a stealthy parasite that lives mostly underground and beneath the bark of infected trees in a pale, stringy fungal network. COURTESY MIKE MCWILLIAMS

Thanks to Milo‘s interest in fungi, which we found infectious, we learned years ago what the world’s largest living thing is. We used to feature more stories from Atlas Obscura, but this is the first in a few years:

What the World’s Largest Organism Reveals About Fires and Forest Health

The Humongous Fungus is most visible when it produces the edible and tasty honey mushroom, but the season is brief and doesn’t happen every year. PETER PEARSALL, USFWS/PUBLIC DOMAIN

In Oregon, the Humongous Fungus plays a complex role in an ecosystem reshaped by humans.

UNDER THE BLUE MOUNTAINS OF Oregon lurks something massive and prehistoric. Yet the largest recorded organism on Earth, weighing more than 200 blue whales and dwarfing even Pando, Utah’s famous grove of quaking aspens, is nearly invisible to the untrained eye. It’s a single, genetically identifiable specimen of honey mushroom, or Armillaria ostoyae, that has been growing for thousands of years. Continue reading

Technology Put To Good Use

A Wounaan forest technician inspects an illegal clearcut in Indigenous territory. CULLEN HEATER

Jim O’Donnell and Cullen Heater tell an essentially hopeful story from our neighbor to the south:

Panama’s Indigenous Groups Wage High-Tech Fight for Their Lands

With help from U.S. organizations, Panama’s Indigenous people are using satellite images and other technologies to identify illegal logging and incursions by ranchers on their territory. But spotting the violations is the easy part — getting the government to act is far harder.

On a blazing February morning, the Indigenous Wounaan territorial monitoring coordinator, two forest technicians, and a local farmer climbed into the mountains outside the fishing and farming community of Majé, near Panama’s Pacific coast. Continue reading

Questions About Forests As Carbon Sinks

PEXELS

We have featured articles about forests so many times for multiple reasons. Even when we hint that we do so just out of pure love, it is almost always about the value of forests to our future on the planet. As always, when a Yale e360 article can help illuminate further on a topic, here goes:

This map shows the height of forests worldwide. Taller forests typically store more carbon. NASA

Climate Change Will Limit How Much Carbon Forests Take Up, New Research Shows

Governments are increasingly looking to forests to draw down carbon pollution, but worsening droughts threaten to stunt tree growth, while larger wildfires and insect infestations risk decimating woodlands, two new studies show. Continue reading

Guided Forest-Bathing In The Loire Valley

The tree houses at Loire Valley Lodges are spread out throughout the forest and each is decorated by a different artist. Joann Pai for The New York Times

After several days of heavier fare, today’s recommended reading leans to the escapist:

Beyond the Châteaux: New Escapes in France’s Loire Valley

Rethinking what the region’s travel should be has meant expanding the focus from fairy tale castle crawls to experiences anchored more firmly in nature, food and the arts.

The Loire Valley is a UNESCO Heritage-protected region, and drew in 9 million yearly visitors to its cultural sites before the pandemic. Joann Pai for The New York Times

On my last prepandemic trip to the Loire Valley, in 2018, I found myself in a familiar place.

Ten years after my first road trip on the region’s castle route, I was back at the 500-year-old Château de Chambord, joining a small group of European and American tourists on a guided tour. Within seconds of convening in the inner courtyard, we were craning our necks to marvel at the structure’s ornamental bell towers as our guide rattled off facts and dates about King Francis I and his former hunting lodge. When she ushered us up to the towers, chiding us for not listening, a feeling of deja-vu washed over me. Continue reading

Old Growth Forest Protection Schemes

Caryssa Rouser, a propagation specialist with Archangel Ancient Tree Archive, plants a sequoia tree in October, 2021, in Sequoia Crest, California. Noah Berger/AP

Old growth forests matter for so many reasons. Not least, biophilic reasons. But at this moment, we rightly pay more attention to their value with regard to urgent climate issues. Maddie Oatman makes a good case in this Mother Jones essay:

Why Old-Growth Forests Matter So Much in the Fight Against Climate Change

Biden’s executive order to preserve ancient trees is a big deal—but it could have gone further.

Few experiences have rendered me as awestruck as the winter morning I spent wandering through a grove of ancient sequoias, their sienna bark glowing against the snowy ground. Continue reading

How Do We Love Thee, Forests, Let Us Count The Ways

Forests, such as this one in Indonesia, do lmore than just store carbon. Photograph: Xinhua/Rex/Shutterstock

It may sound obvious, but until now it was not quantified: The world’s forests do more than just store carbon, new research finds

New data suggests forests help keep the Earth at least half of a degree cooler, protecting us from the effects of climate crisis

The world’s forests play a far greater and more complex role in tackling climate crisis than previously thought, due to their physical effects on global and local temperatures, according to new research. Continue reading

Trees’ Wondrous Capabilities

Diana Beresford-Kroeger at her home in Ontario. “If you build back the forests, you oxygenate the atmosphere more, and it buys us time,” she said. Nasuna Stuart-Ulin for The New York Times

Another round of thanks to Cara Buckley for a vividly written snapshot. Using Science and Celtic Wisdom to Save Trees (and Souls) is about one person’s multi-talented capacity to inspire us in new ways related to trees, and the patience it has required:

Diana Beresford-Kroeger, a botanist and author, has created a forest with tree species handpicked for their ability to withstand a warming planet.

MERRICKVILLE, Ontario — There aren’t many scientists raised in the ways of druids by Celtic medicine women, but there is at least one. She lives in the woods of Canada, in a forest she helped grow. From there, wielding just a pencil, she has been working to save some of the oldest life-forms on Earth by bewitching its humans. Continue reading

Cairngorms Connect & Scotland’s Rewilding

Jeremy Roberts examines the root plate of a felled Scots pine. Photograph: Mark Hamblin/The Guardian

Rewilding looks different in earlier posts about Scotland’s pioneering projects. But here is an additional piece of the puzzle worth understanding:

Chopping, twisting, felling: the unruly way to rewild Scotland’s forests

Orderly pine plantations in the Cairngorms are being messed up as part of a plan to let nature thrive

Cairngorms Connect is the UK’s largest land restoration project

The Scots pine plantations in Abernethy forest are the crème de la crème in forestry terms: tall, straight and dense. These plantations were created in the 1930s, and the wood had a variety of uses, from ships’ masts to trench timbers. Now, this woodland is being retrofitted for wildlife as part of the UK’s largest land restoration project because, although it is striking to wander in such a regimented landscape, nature prefers things to be less orderly. Continue reading

The New Forestry In Germany

KOENIGSHAIN, GERMANY – MAY 19: Aerial photograph of dead conifers in a mixed forest on May 19, 2020 in Koenigshain, Germany. Because of the last years of drought needleleaf forests are infested by bark beetles. Many trees are felled to stop spreading these beetles. (Photo by Florian Gaertner/Photothek via Getty Images)

Gabriel Popkin offers this overview of the history of, and the new German approach to forest management in his article titled FOREST FIGHT, in Science:

Forest researchers Pierre Ibisch (left) and Jeanette Blumröder check a data logger in a pine forest that burned in 2018 and is now being allowed to naturally regenerate. LENA MUCHA

Germany invented “scientific” forestry. But a huge dieback triggered by climate change has ignited a fierce debate over how the nation should manage its trees

SCHWENDA, GERMANY—Last summer, Friederike and Jörg von Beyme stood on a bramble-covered, Sun-blasted slope outside this small town in eastern Germany. Just 4 years ago, the hillside, part of a nearly 500-hectare forest the couple bought in 2002, was green and shady, covered in tall, neatly arranged Norway spruce trees the couple planned to cut and sell. Continue reading

Juliet Eilperin’s Sprawling, Soaring Sitka Story

The trunk of the Sitka spruce marked to be cut down.

The soaring, centuries-old Sitka spruce with its blue spray-paint blaze is spared, for now.

A story about a tree, its history intertwined with five centuries of human history, this article earns your time. And it earns respect for the Washington Post, which assigned a star reporter to oversee its climate change coverage.

Juliet Eilperin features this tree’s significance from multiple angles, and accompanied by the stunning photography and video of Salwan Georges, her words are leveraged artfully with images and dramatic arc into a question you want the answer to: This tree has stood here for 500 years. Will it be sold for $17,500? Definitely worth reading on a large monitor rather than a phone screen. It may get you thinking about graduate school:

The Tongass National Forest in Alaska.

TONGASS NATIONAL FOREST, Alaska — The Sitka spruce soaring more than 180 feet skyward has stood on this spot on Prince of Wales Island for centuries. While fierce winds have contorted the towering trunks of its neighbors, the spruce’s trunk is ramrod straight. Standing apart from the rest of the canopy, it ascends to the height of a 17-story building.

This tree’s erect bearing — a 1917 publication called the Sitka species “the autocrat of timbers” — is what helps give it such extraordinary commercial value. Musical instrument makers covet its fine grain, as do builders whose clients want old-growth wood that’s increasingly scarce. In a world whose ancient forests have largely disappeared, this grove holds a sliver of what remains. Continue reading

Beware of LEAF’s Possible Exclusions

Thanks to Fred Pearce, as always:

A Big New Forest Initiative Sparks Concerns of a ‘Carbon Heist’

Major funding to finance forest conservation projects is set to be announced at the UN climate summit next week. But some environmentalists contend the LEAF program could exclude the Indigenous people who have long protected the forests that the initiative aims to save.

Indigenous lands on the western end Brazilian Amazon have seen far less deforestation than surrounding areas. WORLD RESOURCES INSTITUTE

After a decade of disappointing failures, UN-backed schemes to fight climate change by capturing carbon in the world’s forests are set for a comeback. Big new funding will be announced at next week’s climate conference in Glasgow, Scotland that would deliver billions of dollars in private finance for conservation projects in tropical forests, with governments and companies being able to use the carbon offsets from those projects to achieve their net-zero emissions pledges.

But concerns are growing that these new mega-offset projects will happen at the expense of forest communities. Continue reading

Smog, Ozone & Biodiversity

The view from Beetle Rock in Sequoia National Park, California. Smog, containing high levels of ozone, blows in from the San Joaquin Valley. TRACIE CONE / AP PHOTO

Thanks to Jim Robbins for updating our understanding of ozone’s ongoing threat (we had thought it was lessening):

Ozone Pollution: An Insidious and Growing Threat to Biodiversity

Ground-level ozone has long been known to pose a threat to human health. Now, scientists are increasingly understanding how this pollutant damages plants and trees, setting off a cascade of impacts that harms everything from soil microbes, to insects, to wildlife.

Giant sequoias in Sequoia National Park, California. MARJI LANG/LIGHTROCKET VIA GETTY IMAGES

Sequoia National Park’s famous groves of stout, 300-foot-tall trees sit high on the western side of the Sierra Nevada, above California’s San Joaquin Valley. They are threatened as never before: Wildfires have burned much of the forest, and now, for the first time, insects are killing sequoias. Continue reading

Romania’s Carpathian Mountains, Forever

Rock of the King, NP Piatra Craiului, Transylvania, Southern Carpathian, Romania

The word Carpathian appears, to my surprise, only once in a post before today. Likewise Romania is underrepresented except in passing, and was the focus of just one post, five years ago in our pages. Today I will correct the oversight.

FOUNDATION CONSERVATION CARPATHIA
Bears in the Southern Carpathian Mountains, Romania.

It is surprising because after I was exposed to the idea of rewilding, I started receiving The European Nature Trust’s newsletter. Frequently the newsletter highlights one of the projects they support, in Romania’s Carpathian Mountains. I have been admiring the photographs for years now, and silently supporting TENT’s joint mission with the FCC. Silent no more. Let’s all actively support the Carpathian Mountains of Romania being there forever, intact:

DANIEL ROSENGREN
A frosty morning in the Piatra Craiului National Park, Romania.

TENT is committed to the protecting and restoration of Romania’s natural resources through supporting Foundation Conservation Carpathia.

Romania has 250,000 hectares of virgin forest, mostly in the Southern Carpathians, which constitutes the largest unfragmented forest area in Europe. They contain an extraordinarily high number of indigenous species, one third of all European plant species and are home to the largest European populations of large carnivores. Continue reading

The Largest Forest In The World

Virgin Komi Forest in the northern Ural Mountains in the Komi Republic, Russia. MARKUS MAUTHE / GREENPEACE

We have not posted many times on the vastness of Russia, and its various natural resources, but they are worthy of more attention. Thanks to Yale e360:

Will Russia’s Forests Be an Asset or an Obstacle in Climate Fight?

New research indicating Russia’s vast forests store more carbon than previously estimated would seem like good news. But scientists are concerned Russia will count this carbon uptake as an offset in its climate commitments, which would allow its emissions to continue unchecked. Continue reading

Healing Earth & Avoiding Amazon

Longleaf pines once covered 90 million acres from Virginia to east Texas but today only about 5 percent of historic range remains intact. Marion Clifton Davis was a modern conservationist who bought tens of thousands of acres in the Florida sandhills and turned them into a private reserve, a project aimed at restoring back the Longleaf pine forest. (Photo: Florida Fish and Wildlife, Flickr, CC BY ND 2.0)

When you have 12 minutes to spare, listen to Tony Hiss talk about his new book on this excellent episode of Living On Earth, and if you decide to buy the book and want to avoid Amazon click the image of the book below:

The Boreal Forest is the world’s largest intact forest ecosystem and is a carbon sink. It’s estimated that if global warming exceeds the 3-5 degree Celsius heat stress and water scarcity could trigger extensive forest death and a dangerous release of the stored carbon dioxide into the atmosphere. (Photo: Kevin Owen, Flickr, CC BY NC ND 2.0)

Climate change is placing stress on plants and animals to rapidly adapt but without intact habitat, that could become impossible for many. Tony Hiss is an award-winning author and joins Host Bobby Bascomb to talk about his book Rescuing the Planet: Protecting Half the Land to Heal the Earth, which looks at several places across North America where communities are already working to protect habitat and biodiversity.

Transcript

BASCOMB: It’s Living on Earth, I’m Bobby Bascomb.

During his first few days in office President Biden announced the goal of protecting 30 percent of US land and water by the year 2030 with a long term goal of 50 percent by 2050. Continue reading

Forest Solitude, A Germanic Tradition

With forest making up around 33% of Germany’s land area, woodlands have become a central part of German culture (Credit: Westend61/Getty Images)

Thanks to the BBC for this article about the Germanic tradition of waldeinsamkeit:

Waldeinsamkeit is an archaic German term for the feeling of “forest loneliness” (Credit: Marco Bottigelli/Getty Images)

Everybody is at it in Germany. They’re doing it in the trees in the Black Forest. Out in the magical Harz Mountains. In the national parks of Bavaria when silhouetted in the moonlight. And in the city centre woodlands of Berlin and Munich. Continue reading

More On The Social Networking Of Trees

On a topic we have posted about at least a few times before, here is the latest science on the ways in which trees communicate among themselves, and with others, accompanied by some phenomenally beautiful supporting photographs (especially the fungi):

The Social Life of Forests

Trees appear to communicate and cooperate through subterranean networks of fungi. What are they sharing with one another?

By Ferris Jabr
Photographs by Brendan George Ko

As a child, Suzanne Simard often roamed Canada’s old-growth forests with her siblings, building forts from fallen branches, foraging mushrooms and huckleberries and occasionally eating handfuls of dirt (she liked the taste). Her grandfather and uncles, meanwhile, worked nearby as horse loggers, using low-impact methods to selectively harvest cedar, Douglas fir and white pine. They took so few trees that Simard never noticed much of a difference. The forest seemed ageless and infinite, pillared with conifers, jeweled with raindrops and brimming with ferns and fairy bells. She experienced it as “nature in the raw” — a mythic realm, perfect as it was. When she began attending the University of British Columbia, she was elated to discover forestry: an entire field of science devoted to her beloved domain. It seemed like the natural choice.

Mushrooms and conks are the fruiting bodies of fungi. Their underground filaments form networks among the root systems.

By the time she was in grad school at Oregon State University, however, Simard understood that commercial clearcutting had largely superseded the sustainable logging practices of the past. Loggers were replacing diverse forests with homogeneous plantations, evenly spaced in upturned soil stripped of most underbrush. Without any competitors, the thinking went, the newly planted trees would thrive. Instead, they were frequently more vulnerable to disease and climatic stress than trees in old-growth forests. In particular, Simard noticed that up to 10 percent of newly planted Douglas fir were likely to get sick and die whenever nearby aspen, paper birch and cottonwood were removed. The reasons were unclear. The planted saplings had plenty of space, and they received more light and water than trees in old, dense forests. So why were they so frail? Continue reading

Akira Miyawaki, More On Small Forests

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A Miyawaki forest being planted on the outskirts of Paris, France. Photograph: Courtesy of Boomforest

We knew from a recent post about the importance of small tracts of tree cover, based on reporting in the USA. Here is more from Europe, and about the botanist inspiring an acceleration of planting:

Fast-growing mini-forests spring up in Europe to aid climate

Miyawaki forests are denser and said to be more biodiverse than other kinds of woods

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A three-year-old forest in Ormeignies, Belgium. Photograph: Urban Forests

Tiny, dense forests are springing up around Europe as part of a movement aimed at restoring biodiversity and fighting the climate crisis.

Often sited in schoolyards or alongside roads, the forests can be as small as a tennis court. They are based on the work of the Japanese botanist Akira Miyawaki, who has planted more than 1,000 such forests in Japan, Malaysia and elsewhere. Continue reading