By Seth Truscott
Washington State University Extension Foresters launched a new podcast this fall to help Pacific Northwest landowners, and anyone who loves the woods, better understand and protect forests.
Co-hosts Sean Alexander and Patrick Shults, foresters for northeast and southwest Washington, respectively, created the Forest Overstory podcast as a new avenue for woodland education.
“WSU Extension Forestry is focused on continuing education for the public, and that includes adapting to new ways of sharing information,” Alexander said. “Podcasts let you have an informal conversation, really get down to the bottom of a subject in a way that you can’t in traditional presentations.”
Forest Overstory will examine issues and discoveries about wildfire, forest health, genetics and ecosystems, wildlife habitat, sustainable harvests, agroforestry, and other relevant topics.
The name is a play on words, referring to the overstory of forests—foliage, canopy, and crowns—as well as the broad stories hosts plan to explore.
“We want to interview professionals and talk about what they do, introduce lesser known fields, and bring in active landowners to share success stories and insights that people can apply to their land,” Alexander said.
“The field of forestry is changing all the time,” said Shults. “We’re always learning new things, and the podcast is a great opportunity to bring professionals and landowners who are doing something different into the limelight.”
“All of the information will help forest owners, but anybody who loves trees is going to be interested,” he added.
Hosts will release a new episode every month, and welcome show ideas and feedback. Their first episode, posted Oct. 1, 2021, discussed fire and the landscape with U.S. Forest Service scientist Paul Hessburg. The series is funded by the Foresters Fund of the Society of American Foresters, which promotes education for sustainable forest management.
Listen to the Forest Overstory on Soundcloud, Spotify, Apple Podcasts, Google Podcasts, and Stitcher, or visit the podcast web site on WSU Extension Forestry.
by Lynda V. Mapes
CAPITOL STATE FOREST, Thurston County — Older than Washington state, the biggest Douglas firs on this patch of state forestland have stood through more than a century of logging.
Part of a 180-acre timber sale auctioned off for $4.2 million last November by the state Department of Natural Resources (DNR), their next stop was a plywood mill. Then, something unusual happened.
Hilary Franz, state commissioner of public lands, pulled back nearly 40 acres with most of the biggest, oldest trees from the sale.
Now, this timber sale named Smuggler (sales are often whimsically named by state foresters) also is swinging open a door to a broader conversation in Washington, home to the second largest lumber producer in the nation, to rethink the value of trees on state lands not as logs, but as trees to help address the twin crises of species extinction and climate warming.
Franz is kicking off an examination over the next three to four months of all older forests on DNR lands west of the Cascades not already in conservation status — about 10,000 acres.
But that is nothing compared to positions staked out by two of her predecessors: Jennifer Belcher, commissioner from 1993-2001, and Peter Goldmark, commissioner from 2009-2017. They have launched a proposal to gradually stop all commercial harvest of state forests west of the Cascades, for what they see as a higher purpose: combating the climate crisis.
Nothing we currently know of works better than allowing trees to suck carbon from the atmosphere when they are living, and store it in their branches, roots and the forest soil for centuries after their death. Trees — especially mature forests — are the cheapest, fastest, most reliable form of carbon storage.
So-called proforestation is the leading edge of new science that finds intentionally leaving forests to grow bigger helps blunt the worst effects of the climate catastrophe. Of course, fossil fuel emissions must also be drastically reduced.
Franz said she opposes her predecessors’ proposal. She is concerned about preserving local timber supplies, mills, jobs and payments made from timber revenue to state trust beneficiaries for school construction and local government needs. State trust lands contributed more than $155 million in net revenue to those beneficiaries in 2018, most of it from timber harvests.
But she does want to take a new look at older trees. Not the old growth the state already protects, sprouted before 1850, among other characteristics. The older trees that are the giants of tomorrow.
Franz sees an opportunity to take a broader, more holistic view and create meaningful change that extends beyond the Capitol State Forest, she said in an interview.
by Seth Truscott
Washington State University scientists seek help from residents of the Pacific Northwest in tracing the worrying die-off of an iconic forest tree, the western redcedar.
A distinctive, useful, and beautiful giant, the western redcedar has historically provided Native American tribes with much of the materials for practical objects and culture. Valued for its natural beauty and soft, red timber, which resists decay and repels insects, redcedars can reach nearly 200 feet in height and live for more than a thousand years.
Western redcedars are found throughout the Northwest due to their tolerance for shade, flooding, and poor soils, thriving where other trees cannot.
Over the last few years, however, scientists have observed an increasing number of dead and dying trees. Mortality begins with dieback, in which the tops and branches die from the tips. Some specimens survive, but the condition can also kill.
Joseph Hulbert, postdoctoral fellow in WSU’s Department of Plant Pathology, founded the Forest Health Watch program to enlist citizen scientists in understanding and preventing dieback.
Researchers believe the problem is spurred by longer, hotter droughts in the region. But it’s unclear if precipitation, temperature, consecutive dry days, or other environmental factors are the main factor.
Launched in 2020, Forest Health Watch seeks answers. Citizens help by logging and photographing sites where trees are healthy, dead or dying back. People can also identify sites and conditions where trees may be vulnerable, and watch for signs of disease or pests.
“Anyone can be a community scientist,” Hulbert said. “All you really need is a camera for this project.”
Hulbert launched the Western Redcedar Dieback Map on the iNaturalist citizen science website to allow citizens to easily log their sightings.
“Once we have a strong understanding of the areas where trees are vulnerable, we can begin to explore options for keeping trees healthy in those areas,” he said.
By Evan Bush
Scientists are using cutting-edge research in their efforts to restore Southwest Washington’s Ellsworth Creek Preserve, in hopes of easing the impacts of climate change.
Standing between nearly uniform rows of hemlock trees, scientist Tiara Moore clutched a tiny vial of evidence.
Filled with dirt and no bigger than her pinkie finger, the vial contained traces of hundreds, perhaps even thousands of creatures that had oozed by, crawled past or fluttered into this tiny corner of the Ellsworth Creek Preserve.
The microscopic flecks of DNA — from insects, amoebas and mushrooms — could help tell the story of a forest trying to regrow to its former might.
These forest forensics, part of a fast-growing field called environmental DNA, will tell researchers what’s living here, which, in turn, tells forest managers if what they’re doing is working here.
The soil where Moore dug for DNA was once rooted with old-growth trees common across the coastal Northwest, before decades of clear-cutting stripped them from the land.
Restoring landscapes like these helps take up and store more carbon, part of the solution to reduce the impacts of climate change.
The Nature Conservancy, a nonprofit which owns about 8,000 acres at Ellsworth, hopes Moore’s work can help in pursuit of a longtime Northwest quest: to restore its old-growth forests — rich with biodiversity — and fast.
“These are some of the most carbon-rich systems on Earth,” said David Rolph, director of land conservation for the organization in Washington. “Could we rebuild?”
The conservancy’s theory — backed by years of Northwest forest science — was that thinning and mimicking nature would create a more complex, vibrant forest with a diversity of species, more light for trees and less competition among them for nutrients.
“Any modeling you do will show you get bigger trees faster with thinning,” Rolph said. “You can manipulate and accelerate that complexity.”
The larger the tree, the more carbon can be absorbed and stored, making old-growth forests a boon to mitigating climate change.
By PASSANT RABIE
Bigleaf maple trees in Washington state are on the decline. Researchers are on the hunt for the cause, and climate change is turning into a lead suspect.
Daniel Omdal has driven past the same bigleaf maple tree for decades, often stopping his car to take pictures of its full, expansive crown. In the past few years, however, the tree has started to look more lopsided, with bare branches and patches in its crown with little to no growth.
To Omdal, a forest pathologist, it seemed like an obvious case of an insect infestation. If not, perhaps some kind of disease: a damaging fungus, wilt or a rogue bacterium. Whatever it was, it wasn’t isolated to one tree. The extent of sick bigleaf maples was alarming, and Omdal wasn’t the only one who was worried.
Omdal’s colleagues at the Washington State Department of Natural Resources, where he has worked since 1997, had noticed the same symptoms in many other bigleaf maples. So had many residents of the region, who called the state to report their concerns. The issue had also been occurring nationwide, with reports of sharp declines of urban tree populations in different states, such as the oak tree in Southern California. In Washington, the problem was hard to miss: Bigleafs, also known as Oregon maples, are a staple of the Pacific Northwest landscape.
“These calls became more frequent, I couldn’t so easily dismiss the concerns,” Omdal says. In 2011, he became part of a state-led team investigating the bigleaf die-offs.
The group discovered that about 40 percent of bigleaf maple trees in Washington state are declining, says Jacob Betzen, a graduate student at the University of Washington’s School of Environmental and Forest Sciences, who has been working with the investigative team for the past two years.
The first suspect on their list was Armillaria, a fungus that causes the roots of the tree to rot. But when the team tested hundreds of trees for it, most of their results came back negative. Then, the researchers tested for another fungus called verticillium wilt. Also negative. Often, a few trees would be infected, but it was never widespread enough to be the primary cause of the species’ decline.
Omdal collected soil samples to test in the lab to look for other causes. Every time his team followed a new lead, it didn’t pan out. “We would come to a dead end,” Omdal says.
Patrick Tobin, Betzen’s advisor and a specialist in disturbance ecology, added, “It’s been puzzling, there’s no smoking gun here.”
Then Betzen noticed something curious about the die-offs. They are much more common in developed landscapes and areas that are warmer, drier and closer to roads. That led to a new suspect: climate change. “It seemed probably related to recent weather patterns, it’s getting hotter and drier in Washington in recent years,” Betzen says. The group’s results won’t be published until Betzen concludes his research at the end of the year, but Tobin is confident that the key driver causing bigleaf maple die-offs is, in fact, climate change.