Climate effects on Longleaf Pine seed production

Those in the longleaf pine range may be aware that the existing area of longleaf is but a scant remnant of its original distribution. Organizations and initiatives throughout the Southeastern US are actively working to restore and expand the acreage of this stately native tree.  Variations in climate may present a new challenge to this effort, as USDA Forest Service scientists are currently discovering just how complex the relationship is between longleaf pine seed production and climate.  

Longleaf Pine Range Map 1966
Longleaf Pine Range

Will Black Oaks Survive Climate Change in the Midwest?

Black oaks may face many threats from climate change in the coming years. Photo: Willow, Wikimedia Commons (CC BY 2.5)

The survival of some species of oaks, among them black oak, have been threatened as forested areas in North America are cleared for agriculture, urban development, and other forms of development.  It is a major goal of many forest managers to maintain current populations of oak (Quercus spp.) for timber, wildlife, and conservation biology. Currently, black oak is distributed throughout …

Protect Your Forest Asset

Adapted from peer reviewed publication SREF-FM-0018 May, 2013. L. Jennings, L. Boby, W. Hubbard and M. Megalos. Protecting Your Forest Asset.

Record droughts, rising temperatures, increased frequency and intensity of wildfires, insect and plan invasions, and more intense storm events all pose threats to the health of Southern forests. Scientists project that increases in temperature and changes in rainfall patterns will cause these disturbances to become more common, occurring with greater intensity or duration. 

The use of …

Oregon Forests and Climate Change

Oregon State University Forestry & Natural Resources Extension started a blog in 2015 on Oregon Forests and Climate Change. The goal of the blog is to assist Oregon’s private forest owners in understanding basic climate science principles, anticipated impacts on managed forests, and options for adaptation and management. Several articles have posted to this blog already, and we provide specific links to them here. As OSU Forestry and Natural Resources Extension updates the blog, we will add the new …

There have always been extreme weather events, so why are scientists talking so much about extreme events now?

Recent climate research synthesized in the 2007 and 2014 Intergovernmental Panel on Climate Change Assessment Reports documents that there have been observable changes in extreme weather events over the past fifty years that are consistent with the expected impacts in a warming climate. The report shows that there has been a significant shift towards fewer cold and more heat extremes across many parts of the globe over the past fifty years. The 2014 National Climate Assessment reaffirms that U.S. average

Planting Trees to Regenerate a Forest

Renewing a forest—to replace harvested trees or those that died from insects, disease, fire, old age, or extreme weather events—is key to sustainable forestry. Foresters refer to the process of establishing new tree seedlings as “regeneration.” They also refer to the seedlings established in the forest as “regeneration.”

Aspen regeneration two months after clear-cutting in a site in Cass County, Minnesota. Photo: Eli Sagor, Flickr (CC BY-NC 2.0).

Regeneration can be accomplished through two basic approaches: (1) natural regeneration, which …

How do trees and other vegetation affect urban mesoclimates and microclimates?

Vegetation affects urban mesoclimate and microclimate by intercepting solar radiation, directing air movement, and affecting air temperature.  Microclimate, mesoclimate and macroclimate can be used to describe the climate of a given location. Macroclimate covers hundreds of square miles and parameters such as precipitation levels, temperatures and winds. Mesoclimate covers areas of tens of square miles and describes how conditions vary from the prevailing macroclimate due to the effects of water bodies, topographic features (terrain), and other landscape influences. A microclimate …

National Workshop on Climate and Forests Poster Abstracts – May 17th, 2011

National Workshop on Climate and Forests

Poster Session Abstracts, May 17, 2011

DuBois Conference Center, Northern Arizona University, Flagstaff, Arizona

The following are posters that were presented during the Poster Session of the National Workshop on Climate and Forests. A few have been made available by the authors. For additional questions or information, please contact authors indicated for each poster.

Links to Individual Poster Abstracts





Cost-Benefit Approach to Urban Forests: A Western Analysis


Urban tree programs have expenses for planting, maintenance, even sidewalk repair. Yet the benefits of urban trees in five western cities analyzed outweighed the costs by ratios of 1.37 to 3.09.

For the analysis, samples of 30 to 70 randomly selected trees from each of the most abundant species were surveyed in five cities: Fort Collins, Colorado; Cheyenne, Wyoming; Bismarck, North Dakota; Berkeley, California; and Glendale, Arizona. All of these cities were surveyed by the U.S. Forest Service during the …