A Phoenix From A Ring Of Fire Is A Pattern For The Recovery Of Mount St. Helens
...on volcano recover its majestic forests of Douglas fir and western hemlock within a similar period of time? Definitely, says University of Washington zoologist John Edwards, who recently returned from Krakatau. As one example of recovery he cites French researchers' discovery of a prolifer...Isle Royale Moose Continue Decline
...the moose that survived was an abundance of balsam fir browse on the east end of the island. Interestingl...ecies are not available, moose will turn to balsam fir and other less nutritious species. Peterson says the reduction in moose is good from the standpoint ...SFU Researcher Fools Forest Pest Into 'Barking Up The Wrong Tree'
...dying how two species of bark beetle - the Douglas fir beetle and the mountain pine beetle - find the tre...ark beetles are present, we'd, say, make a Douglas fir smell like a cottonwood," says Huber. "Instead of attacking the tree, thebeetles would fly on by." H...10,000-Year-Old Clues Suggest Future Forest Changes
...ry and landscape as more drought-resistant Douglas fir trees beginto replace western red cedar and hemlock. "We are likely to have more forest fires of increased severity. Cedar is especially susceptible to fire and drought. In fact there is evidence to show cedar is not regenerating well in some areas n...Small-Scale Fires Key To Understanding Forest Structure
... directly to past biological diversity. Now, white fir has reachedunprecedented dominance, while other species are in decline. If resourcemanagers want to maintain the remarkable diversity of these landscapes, therestoration of diverse fire regimes is necessary....Old Growth Forests May Shed Light On Worldwide Greenhouse Effect
... and water on 550-year-old and40-year-old Douglas fir forests at a research site near the Wind River insouthern Washington. Their initial data suggested that both the old growth andthe 40-year-old forest absorbed more carbon than they released. However, theyoung forest had a much higher carbon assimil...Wolf response to climate change can impact ecosystem
...productivity of moose, which limit productivity of fir trees. " We investigated the ecological consequen...vior and how it affected moose and their impact on fir saplings on Isle Royale," explained Peterson. " Wolves responded to increasingly snowy winters by ...Isle Royale wolves fewer, but thriving
...e east end fare better because of the large balsam fir stands growing there....Picky plants: Do they 'choose' the best fungal partner?
...tern of different types of fungi growing on balsam fir seedlings in an area with light conditions ranging from full sun to full shade. He found that a fir seedling living in the shade associates with a different fungus than a fir seedling living in the su...Wolves decline, moose increase
... prefer these for food. "We lost 16 percent of the fir trees on the western half this winter," he said. "In the last 13 years, about three-quarters of these trees have disappeared. Younger trees can't grown because the moose are eating them. While I expect the moose to increase over the summer, there are...Fungi help some trees weather acid rain, not all
...ight kind of mycorrhizae on their roots -- spruce, fir and most other coniferous varieties, as well as certain hardwoods, such as oaks. And a lesser benefit might accrue to trees species with the "wrong" type of root fungi -- including ash, basswood and maples -- if they are growing nearby in mixed-speci...UC researchers confirm coast redwood and Douglas fir as hosts for sudden oak death pathogen
...t highly prized trees -- coast redwood and Douglas fir -- are susceptible to Phytophthora ramorum, the pa... branches and needles of coast redwood and Douglas fir saplings that had shown symptoms of infection. The researchers first announced the discovery of P. r...Virginia Bioinformatics Institute to decode plant devourer genomes
...ecosystems. It also threatens redwood and Douglas fir forests on the West coast, and red and pin oak forests in the East. Tyler's research group will provide a genetic map of the P. sojae genome that will be used to assemble the raw DNA sequence data to be produced at the DOE Joint Genome Institute (JG...Study predicts loss of monarch winter refuges
...dition. Monarchs currently spend winters in oyamel fir forests in mountainous areas of central Mexico. Wi... winter. Furthermore, winter storms in the Mexican fir forests in 2002 caused massive monarch mortality, an indication that storms are an important determi...Warmer weather, human disturbances interact to change forests
...ncluding jack pine, red pine, white spruce, balsam fir and paper birch - would not be able to survive warmer conditions. But human actions also contribute to this changing landscape, according to the results. Says Scheller, "Human influence greatly modifies change in the forests, and logging and fragm...Two warbler species find the West isn't big enough for both of them
...ownsend's warbler, which lives in the damp Douglas fir forests of Western North America, has been steadil...able, that is farther south and west. But Douglas fir forests only extend so far, and current trends would mean the hermit warbler probably will become ex...