Photo Gallery
The images in our galleries reflect the history, place, people, and research of the HJ Andrews Experimental Forest and Long-Term Ecological Research site. Images may be downloaded for use in papers, posters, presentations, etc. We ask that both the photographer and the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program, US Forest Service Pacific Northwest Research Station, and Oregon State University be acknowledged and cited whenever an image is used. Please refer to the data use policy and suggested acknowledgements. In some cases, higher resolution images may be available from the database manager.
The galleries below display selected images from our full image library. We've highlighted images of broad appeal and interest; we will add additional images to these galleries over time. Our full collection of images can be found in our Image Library.
Western hemlock dwarf mistletoe (Arceuthobium tsugense subsp. tsugense) is a small, parasitic plant that infects the leaves and branches of its host plant, the western hemlock (Tsuga heterophylla) tree. Within a forest...
HJA Day is the annual field tour of the HJ Andrews Experimental Forest Long-Term Ecological Research site. Field trips and presentations highlight the research, education, and arts and humanities work of the Andrews Forest program.
Heavy snow fell on the Andrews Forest the night of February 24, 2019. The snow, heavy and wet, fell fast and accumulated quickly in the crowns of the trees. The weight of the snow toppled trees or snapped out their crowns. The entire region,...
The Andrews Forest Long-Term Ecological Research program includes a long-term soil study. Researchers dig soil pits to measure, weigh, sample, and describe the soil, across multiple locations in the forest and over many years. This photo gallery...
The terrestrial food web dynamics research project focuses on how mammalian carnivores of the Pacific Northwest forest interact with other components of the ecosystem. Specifically, the project aims to understand the ecology of the western...
The Pacific Northwest Permanent Sample Plot Program is a long-term study of forest vegetation across the Pacific Northwest. The program samples 135 plots across a diversity of...
Graduate student Karla Jarecke studied how water moves through soil on the steep slopes of Watershed 1 at the Andrews Forest. Karla and an NSF-funded Research Experience for Undergraduate (REU) student, Lauren Roof, dug soil pits to sample and...
The Long-term Ecological Reflections program creates ongoing occasions for reflection and creative expression, and to collect a record of the...
Photographs of plants and their pollinators. Images were taken in the high meadows of the Andrews Forest in summer 2018 during the Research Experience for Undergraduates pollinator research project field work. This gallery is a subset of the...
HJA Day is the annual field day at the HJ Andrews Experimental Forest and Long-Term Ecological Research site. HJA Day 2018 happened on June 28, 2018. The event highlighted the 70th anniversary of the 1948 establishment of the HJ Andrews...