Category Archive: Global ReLeaf

Forest Digest — Week of September 15

The impacts of climate change are being felt in forests across the world. Read about new climate-change-related studies and other forestry news in this week’s Forest Digest: “Climate Change Is Making Trees Grow Rapidly” — Discovery News Scientists from Germany’s Technische Universität München have found that the two dominant European tree species — European beech […]

Up-close with Yellowstone’s whitebark pine

Brad Bauer knows a thing or two about his backyard. Bauer lives in Montana and works at Montana State University’s Gallatin County Extension, where he directs the Natural Resource Program and assists the communities and individuals in Gallatin, Meagher, and Park Counties in Montana in understanding natural resources. Bauer is helping American Forests and National […]

Tree-killing pests: Who? Where? How?

By Faith Campbell, Emeritus environmental advocate and tree-pest expert Nearly 500 non-native insects and disease-causing pathogens have been introduced to the United States in the 400 years since European settlement began. Here are some examples: Chestnut blight has virtually eliminated mature American chestnuts across the species’ range, which is most of the eastern deciduous forest. […]

Forest Digest — Week of September 8

Another week and another Forest Digest. See what’s happening in the world of trees: “Climate change accelerating death of Western forests” — USA Today A study by the Union of Concerned Scientists and the Rocky Mountain Climate Organization shows that drought, insect pests and wildfire — forest threats exacerbated by climate change — are killing […]

Whitebark pine: Strategy in the Greater Yellowstone Area

Whitebark pine ecosystems face pest, disease and climatic threats that have — and could further — wreak havoc on stands of this keystone species. Fortunately for the trees, and the plants and wildlife that rely on them to survive, American Forests and our partners in the Greater Yellowstone Area are working towards solutions that can […]

Forest Digest — Week of September 1

Another week and another Forest Digest. See what’s happening in the world of trees: “New Analysis Finds Over 100 Million Hectares of Intact Forest Area Degraded Since 2000” — World Resources Institute More than 104 million hectares — an area three times the size of Germany — of the world’s largest remaining forests experienced rapid […]

Water supply and the whitebark pine

American Forests helped leverage National Park Service (NPS) funding in the Greater Yellowstone Area (GYA) to estimate the Available Water Supply (AWS) for the 176 long-term whitebark pine monitoring sites. NPS personnel had previously started gathering data in 2013, but limited funding paused the project. Many people — including project lead David Thoma, an hydrologist […]

How large does the blue spruce grow?

By Robert T. Leverett, Native Tree Society How tall do blue spruces grow? Ornamental yard trees often reach 60 to 80 feet and 1.5 to three feet in diameter. Ostensibly reliable internet sources vary greatly on listed maximum heights. Some say more than 100 feet. Others cap the species off at 80, while one source […]

Introducing tree-pest expert Faith Campbell

Homepage photo credit: Kyle Ramirez Faith Campbell knows a thing or two about trees and the insects that threaten them. She brings years of experience, including her most recent post at The Nature Conservancy, to Loose Leaf as one of our new guest bloggers. Before diving into the interesting and sometimes volatile relationship between trees, […]

Forest Digest — Week of August 25

Summer is winding down, but our Forest Digest is still going strong. Check out this week’s news in trees: “Brazil Could Save Its Atlantic Forests for Just $200 Million a Year” — Newsweek Less than 15 percent of the original Atlantic Forest, which surrounds some of Brazil’s largest cities, remains. But scientists have calculated that […]