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The Work
The mission of the Andrews Forest Program is to support research on forests, streams, and watersheds, and to foster strong collaboration among ecosystem science, education, natural...
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Long-Term Ecological Research
Ecology is the study of the relationships between living organisms and their environment, or the study of how ecosystems function. Because most ecosystem processes...
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Data from the HJ Andrews Experimental Forest and Long-Term Ecological Research Site has been collected, curated, and archived for more than 60 years. Data are available for download and use, with...
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The Andrews Forest Program includes a broad spectrum of outreach activities with many objectives and funding sources.
Education
The Education program provides an opportunity for undergraduate...
Research Highlights
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...
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Our location on the Google Map above is accurate (you can replicate this by typing H.J. Andrews Experimental Forest into google search, or our 15-130-132 USFS RD address), but not all GPS units have...
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Human History
Indigenous peoples have been in relationship for thousands of years with the forests, streams, and meadows we now call the Blue River watershed. In the Kalapuya Treaty of 1855 (aka...
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FOREST CLOSURE due to wildfire: As of summer 2024, a public closure remains in effect for the entire Lookout Fire perimeter, which includes most of the H.J. Andrews Experimental Forest (HJA)....
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Andrews Forest Phenology and Webcam Program
click the images to get a larger pop-up window
Time-lapse videos of the HJ Andrews Headquarters
Roswell North
Roswell West (1603m) (...
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HEADQUARTERS FACILITIES
The Andrews Forest's Headquarters, with labs, offices, and housing is located on a low elevation site at the western boundary, near Blue River Reservoir. The facility,...
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Research at the Andrews Forest has revealed a diverse community of plants and animals. The species lists below are organized by taxonomic grouping.
Invertebrates
Plants
Birds
Amphibians...
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Our research topics, each an integration of long-term and short-term approaches and questions, are described below. We study biological diversity, carbon and nutrient dynamics, climate, conservation...
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Below are links to maps of the Andrews Experimental Forest, available as jpg, pdf, geoenabled pdf, interactive on the webpage, or using arcMap.
If you're looking for driving...
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Lodging, conference hall, classrooms, bench space, offices/desks and cafeteria are scheduled on a first-come first-serve basis, with preference given to long-term research and education users of the...
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Our understanding of the forested ecosystem at the HJ Andrews Experimental Forest is the product of decades of research. Funding for our long-term research comes from the US Forest Service's...
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The HJ Andrews Experimental Forest and Long-Term Ecological Research site invests in facilities and field research infrastructure to support ongoing and new research. The research infrastructure is...
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Benchmark and Secondary Meteorological Stations
Four benchmark climate stations provide a full suite of common meteorological sensors for measuring air and soil temperature, relative humidity,...
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Andrews Forest (Lookout Creek) Experimental Watersheds
There are nine small experimental watersheds and ten gauging stations on the Andrews Forest, including the station near the mouth of...
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Reference Stands
There are 38 permanent sample plots in and adjacent to the Andrews Forest in unmamanged forest stands. This network of plots is part of a larger Permanent Sample Plot...
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The primary wireless communication sites are linked to each other and to the Andrews Forest headquarters by 5.8Ghz radio bridges. Climate and gauging stations connect to access points...
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The H.J. Andrews Experimental Forest (HJA) was established to promote research and education to improve our understanding of Pacific Northwest ecosystems and natural resource management. The HJA...
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Safety and User Guidelines
Working in the field, particularly in the mountains, entails risks that are different than those encountered elsewhere in life. Summarized field safety procedures...