Biological Diversity

Forests of Oregon Elevation Gradient

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. Field studies and experiments will test the importance of species interactions to changes in density dependence and biodiversity across environmental gradients.The FOREG project was designed to dovetail and connect with the long-running Reference Stand study at the Andrews Forest.

Dwarf Mistletoe Research

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, like the HJ Andrews Experimental Forest, areas of mistletoe infection are patchy. Some areas of the forest have trees that are not infected, while other areas have trees that are heavily infected. Hemlock trees infected with dwarf mistletoe grow dense, multi-branched growths, called witches’ brooms.

Andrews Forest Newsletter Spring 2019 Issue

News Brief Description: 

The Spring 2019 issue of the Andrews Forest Newsletter, is now available as an online version or as a downloadable PDF.

  • Get the buzz on meadow flowers and flower visitors
  • Find out what happens in the forest when a heavy snow falls 
  • Consider silence and the sound of the night
  • Track what’s happening to plant phenology as the climate warms

The Andrews Forest Newsletter is a semi-annual publication of the Andrews Forest Program. View past issues at https://andrewsforest.oregonstate.edu/publications/newsletter 

March of the Newts

News Brief Description: 

The rough-skinned newt is an emblem of moist forests of the Pacific Northwest. The newt is the unofficial mascot of the Andrews Forest -- it even shows up on our logo!  Check out this short film, March of the Newts, that celebrates the nature of newts and raises awareness around the prevention and detection of Bsal, a disease that threatens salamander species worldwide.

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