Editor’s Note: On Aug. 5, 2023, after this story went to print, the Lookout Fire was sparked by lightning in the HJ Andrews Experimental Forest. It will be some time until the full extent of the damage is determined. Meanwhile, regular updates on the fire are being posted on the HJ Andrews Forest website.

Celebrating 75 years of the H.J. Andrews Experimental Forest

Some things happen in an instant. Other things take their time, gradually evolving over the years. The work on the H.J. Andrews Experimental Forest Long Term Ecological Research Program is more of a take-your-time kind of thing — like 75-year kind of time.

Managed by Oregon State University in partnership with the U.S. Forest Service, the Andrews, as it’s affectionately known, is a 16,000-acre ecological research site east of Eugene in Oregon’s western Cascades. First established in 1948 as a U.S. Forest Service Experimental Forest, the Andrews is committed to long-term, place-based research and celebrates its 75th anniversary this November.

“Most ecological research lasts for only two or three years,” says Matt Betts, a professor of landscape ecology and the lead principal investigator. “At the Andrews, we’ve studied tree growth and death in the same stands for 52 years, examined fish populations in the same section of stream for 37 years and measured climate and streamflow for 65 years across the forest.”

This kind of long-term research is incredibly rare and extraordinarily valuable because it’s nearly impossible to understand an ecological system on a two-to-three-year time scale. In fact, research results from short-term studies are often overturned by long-term studies.

However, this same commitment to long-term research can also be a challenge. How do you stay excited about looking at the same thing in the same place for 50 years?

Associate Professor and Co-Principal Investigator Catalina Segura says she never feels like her hydrology research at the Andrews is repetitive. “The ability to ask diverse questions in this same place keeps the excitement alive,” Segura says. “The overlapping research adds to the thrill, and on an emotional level, I have a deep love for the Andrews.”

Segura is not the only one. The love for the Andrews Forest runs deep and wide. And not just with scientists and researchers. The Andrews has a robust humanities program welcoming writers, artists, musicians and philosophers to explore the meaning of the ancient forest ecosystem.

“Though our data goes back 75 years, the legacy of the Andrews is found in its people,” says Betts. “We have a global, intergenerational alumni group and even now, have over twenty graduate students and postdoctoral fellows doing research, studying a range of topics from tree canopies and climate resilience to groundwater and streamflow to environmental psychology and social science.”

The collaborative nature of the Andrews extends its legacy goes beyond the College of Forestry. Posy Busby, a microbiologist and associate professor in the department of botany and plant pathology at the College of Agricultural Sciences and Brooke Penaluna, the lead scientist with the U.S. Forest Service, are also co-principal investigators, with a long history of research at the Andrews.

“The Andrews is a special and unique place because it makes you feel alive and curious about the world,” says Penaluna. “It’s also particularly special because of the people that make up its partnership, including Pacific Northwest Research Station, the Willamette National Forest, and the College of Forestry.”

A version of this story appeared in the Fall 2023 issue of Focus on Forestry, the alumni magazine of the Oregon State University College of Forestry.

It’s not easy to find a marbled murrelet’s nest in Oregon. It wasn’t until 1990 that researchers even located the first one in the state. The elusive breeding behavior of this threatened species has made it challenging to protect through conservation efforts and strategic management of coastal forests. It’s clear the population of this small seabird has declined from historic levels — but the reasons why are murky.

That’s why a team of College of Forestry researchers launched Oregon’s first large-scale, long-term study of murrelet breeding biology. This collaborative project, initiated in 2016, drew immediate support from a diverse group of stakeholders across the state.

“Murrelets are a listed species, so there’s a lot of interest in recovering this population,” said Jim Rivers, an assistant professor of wildlife ecology who’s leading the research effort. “But we haven’t had the information we need to understand what’s constraining reproductive output.”

For phase one of the project, the research team turned to existing data to better understand why the birds travel inland to nest some years, but not others. Murrelets rely on the sea for their food, including forage fish like anchovy, herring, and smelt, and commute as much as 50 miles inland to nest in old-growth and late-successional forests, where they lay a single egg. The researchers learned when it’s a bad sea year and ocean temperatures are too high, the birds forego breeding, unable to get food to feed their young.

For the next phase of research, the team studied the murrelet’s breeding behavior, tracking them from sea to nest. Venturing out on a research vessel, the team boarded inflatable boats to catch murrelets, install radio tags and release the birds back into the wild. When breeding season hit, the team patrolled the coast with airplanes, listening for beeps from radio tags to narrow down potential nesting sites for the
ground crew and tree climber to locate.

But because murrelets nest in older forests, just getting to the vicinity of a nesting tree usually involves scaling piles of blowdown and bushwhacking through thick growth for miles. And murrelets are sneaky nest-builders — and sitters. They don’t use twigs and branches to build their nests like other birds. Instead, they find a mossy branch where they lay a single egg and take turns incubating it. They trade spots once every 24 hours, sitting so still that their only movement may be just the blink of an eye.

And when they’re moving in and out of the nest, they’re really moving. Murrelets have been clocked at nearly 100 mph and their typical cruising speed is 60-70 mph. They usually fly at dawn and dusk, so it takes an eagle eye to spot these birds and find their nests, a large reason there were only 29 active nests recorded in Oregon before this project. The team of OSU researchers more than doubled that number, also installing cameras at each nest to monitor success.

“We’re learning a lot about where murrelets are nesting, how successful they are and what causes them to fail,” said Rivers. “This information has been a long time coming, and it ties back to how challenging it is to do this fieldwork.”

A version of this story appeared in the Spring 2023 issue of Focus on Forestry, the alumni magazine of the Oregon State University College of Forestry.

Balancing timber production to maximize biodiversity

As the human population grows, the demand for resources is increasing. But at what cost to biodiversity? Just as the agricultural industry contends with how to sustainably feed eight billion humans, the challenge for forest managers is to find sustainable ways to meet human wood consumption needs, explains Matt Betts, Ruth H. Spaniol chair of renewable resources and professor in the department of forest ecosystems and society.

“What we consume has a huge impact on our planet’s biodiversity,” said Betts. “But very few researchers have tested approaches to minimize tradeoffs between timber production and biodiversity conservation.”
Betts explains that in agriculture, there are two main camps of thinking. The first, “land sparing” involves setting aside large portions of the landscape as unmanaged reserves, and growing crops intensively in others. The second, “land sharing” involves low-intensity “nature-friendly” agriculture. This results in lower yield, increased total area for food production and therefore few or no reserves.

In forestry, this “land sharing versus sparing” model has been expanded to a triad approach, where a given landscape may be divided into differing proportions of three distinct management groups — reserves, focused on biodiversity conservation; intensive management, focused on wood production; and ecological forestry, which is a mix of both.

To test this approach, he is collaborating with stakeholders inside and outside the College of Forestry to launch a 20-year study across 40 different sub-watersheds in the Elliott State Research Forest. The research is designed to test different proportions of all three management types across various forest landscapes (watersheds). By doing this, Betts and his team hope to learn how these management approaches affect biodiversity and wood production over time.

Before the project can begin, it must gain the approval of many stakeholder groups to be completed on the state-owned forest. In the meantime, Betts is working on a shorter-term version of this project funded by the National Institute for Food and Agriculture.

In collaboration with several CoF researchers, including Klaus Puettmann, Doug Mainwaring and John Sessions along with Taal Levi, a professor in the Department of Fisheries, Wildlife and Conservation Sciences, and doctoral student Maggie Hallerud, Betts’ team is collecting data from forests that fall under the categories of reserve, intensive management and ecological forestry. They are performing preliminary modeling about how each approach affects biodiversity. Hallerud is leading the biodiversity data collection and analysis and Levi is leading the eDNA analysis in this work.

Before and after each experiment, the team counts various species, measures vegetation and incorporates cutting-edge research methods. Researchers are identifying recorded bird sounds through machine learning, tracking wildlife with game cameras powered by artificial intelligence and using DNA barcoding (eDNA) to monitor species diversity.

This study comes with limitations, however, and Betts thinks the most meaningful insights will come from a longer-term project with more controlled experiments at landscape scales.

“That’s the real gold standard for science,” he says. “What we find in short-term studies is often overturned by what we find in long-term studies. And with how long-lived trees are, there’s certain information we could never get during a single career.”

Betts believes a long-term research project in the Elliott State Research Forest could offer critical insights into how to conserve biodiversity and sequester carbon while sustainably keeping up with society’s increasing demand for wood products.

“We don’t have enough information about this mix of forestry practices in the Pacific Northwest,” he said. “A long-term project like the one proposed for the Elliott would enable us to try to reduce the potential trade-offs between timber production and conservation — and identify an ideal mix of forestry management practices that enable production of wood while still maintaining biodiversity. If successful, this could be a fantastic example of approaches to balance human needs with biodiversity conservation, and how people can collaborate to move beyond historical conflicts about forest values.”

A version of this story appeared in the Spring 2023 issue of Focus on Forestry, the alumni magazine of the Oregon State University College of Forestry.