A new research project at the Andrews Forest aims to shed light on how changes in temperature and precipitation affect patterns of biodiversity. The Forests of Oregon Elevation Gradient (FOREG) is a network of large sample plots, established in 2019, within the HJ Andrews Experimental Forest.
Researchers at the Andrews Forest are studying how dwarf mistletoe may be affecting forest stands across the Pacific Northwest. The work requires getting up to where the mistletoe grows: high in the canopy of the trees. Get a canopy perspective through a new photo gallery at https://andrewsforest.oregonstate.edu/gallery/dwarf-mistletoe-survey-2019
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 students. The paper, “Drought impacts to trout and salamanders in cool, forested headwater ecosystems in the western Cascade Mountains” knits together research from a graduate student, two undergraduate students, and their OSU advisor, Assistant Professor Dana Warren.
A recent study on how historical timber harvests affect the structure of neighboring old-growth forests finds that forests within 75 meters of harvest edges had less live tree basal area than forests tucked in the interior away from edges. The length of time since harvest had little or no effect. This study is important in examining the subtle impact of human activity on forest landscapes in western Oregon and showing how widespread and long-lasting the edge influence of past clearcutting has been on neighboring old-growth forest.