Northern spotted owl populations are approaching or have already crossed functional extinction across large areas of the Pacific Northwest. Researchers used artificial intelligence and advanced…
Species interactions, such as competition or facilitation, are part of what shapes how populations are distributed in a landscape. Researchers used a 15-year dataset on bird distribution and abundance…
Growing evidence has shown that changes in landscape-level factors by accelerated land-use change can shape soil pathogenic fungal diversity. Researchers assessed how pathogenic fungal diversity in…
Understanding the mechanisms that enable species to coexist is essential for explaining community structure and biodiversity. Researchers compared the diets of two dominant stream predators in western…
OSU graduate student, Matthew Weldy, is harnessing the power of AI and open-source modeling to process millions of hours of recorded acoustic data of birds across the forests of the Pacific Northwest…
An LTER synthesis working group effort brought together long-term datasets on woody plant reproduction to investigate drivers and patterns of seed masting (synchronous seed production across years) in…
Andrews Forest graduate students and their work are featured in the Winter 2025 issue of the National Widlife Magazine, in an article written by Marina Richie, titled, “ Undaunted, Grad Students…
A compressed breeding schedule and departure of Hermit Warblers from their breeding grounds in early July may indicate that breeding is limited by a short window of favorable climatic conditions…
To fill a key knowledge gap of the western spotted skunk (Spilogale gracilis), researchers used camera traps and models to learn about skunk home ranges and movements
In the last 10 years, David Herasimtschuk has photographed forests across the Pacific Northwest, documenting the inhabitants of these last remaining old-growth ecosystems. From salamanders and salmon…
Researchers detailed how wind, vegetation structure (e.g., canopy height, the age of trees, etc.), and site topography played a significant role in burn severity patterns of five megafires that burned…
Some species of birds, including the Hermit Warbler, may find more favorable habitat conditions in the buffered microclimate of old-growth forests. Photos by Hankyu Kim.
For aquatic insects, a major life-cycle event is emergence, the transition of the aquatic juvenile stage to a terrestrial flying adult. If aquatic insects experience warmer water, do they emerge…
Old-growth forests, such as those found within the HJ Andrews Experimental Forest Long-Term Ecological Research site, may offer temperature refugia for animals in a warming climate.
"The Rapid Rise of Next-Generation Natural History,” outlines the renaissance of natural history with modern technological and statistical tools. Camera-traps and acoustic recorders, aircraft- and…
A new research project at the H.J. Andrews Experimental Forest aims to shed light on how changes in temperature and precipitation affect patterns of biodiversity. The Forests of Oregon Elevation…
Dwarf mistletoe infections cause changes in tree growth and water use. To understand the effect of mistletoe in the canopy of a tree, and in the broader area of a forest, researchers are climbing into…
Hermit Warblers are endemic breeders in forests of the Pacific Northwest; they migrate to Central America (Mexico south to Costa Rica) during their non-breeding period. A new study at the H.J. Andrews…
A recent publication out of the HJ Andrews Experimental Forest LTER site illustrates the role that summer research experiences can play in contributing to LTER science and in engaging and mentoring…
Get a stunning bird's-eye view of the forest from above the trees, and through the trees, and find out what scientists are learning about how birds may be using the old-growth forest to beat the heat.
Old forests that contain large trees and a diversity of tree sizes and species may offer refuge to some types of birds facing threats in a warming climate. In a paper published in Diversity and…
A publication co-authored by a team of Oregon State University, US Forest Service, and US Geological Survey investigators compares quality of interpretation of northern spotted owl habitat based on…