forests

Live fast, die young true for forests too

Trees in the world¹s most productive forests -- forests that add the most new growth each year -- also tend to die young, according to a U.S. Geological Survey (USGS) study published in a recent issue of the journal Ecology Letters. This discovery could help scientists predict how forests will respond to ongoing and future environmental changes. "One implication of this fast turnover rate...

U.N. mulls the protection of Earth's forests

The final meeting of the United Nations Forum on Forests, now under way, could result in firm commitments to protect the world's forests or, some environmentalists worry, merely an agreement to continue negotiations. One member of the U.S. delegation to the U.N. forum is international environmental policy expert Matthew Auer, who remains guardedly optimistic that the two-week negotiation...

Expanding forests darken the outlook for butterflies, study shows

Changing environmental conditions in the Canadian Rockies are stifling the mating choices of butterflies in the region, say University of Alberta researchers. Smaller and less abundant alpine meadows--largely the result of human activities--are diminishing the alpine butterfly gene pool, creating a pattern that could lead to the butterflies being less able to survive, said Dr. Jens Roland,...

Emerald Spectre haunts Ontario's ash forests

A new study shows that while we're winning isolated battles, we could well lose the war to prevent the devastating spread of the emerald ash borer in eastern Canada and the United States. It's a failure that would cost billions of dollars in lost timber and ornamental trees, and dramatically change the forest and neighbourhood landscape in eastern North America - with even more impact than Dutch...

Tropical dry forests receive international recognition

When most people think of tropical forests, rainforests immediately come to mind. But they are not the only kind under threat--the tropical dry forest is in as much danger as its popular cousin yet its grave situation continues to be ignored. Dr. Arturo Sanchez-Azofeifa is hoping to change that. Sanchez-Azofeifa is the director of the newly formed TROPI-DRY, a research network on tropica...

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Biodiversity threatened as forests become 'islands' of green, UW professor says

America's national forests are beginning to resemble "islands" of green wilderness, increasingly trapped by an expanding sea of new houses, a UW-Madison forestry researcher reports at the 90th annual Ecological Society of America (ESA) meeting in Montreal, Canada. The widening circle of development around forests such as the Cleveland National Forest in Southern California is serving to...

forests at Medicine News

Will The Tropical Forests Survive The Deforestation Scenario?

Tropical forests are slowly being removed from the face of the earth by the process of deforestation. This is done to satisfy the growing needs// of the human population. This has resulted in complete extinction of the forest species. Humans in rural settings contribute most to deforestation. Growing population and intense urbanization are the two main reasons that accelerate deforestati...

India to Protect Its Forests With the Aid of Austrian NGO

India, which is fast losing its forests to over-exploitation, will get help in protecting its green cover from an Austrian research organization which signed up the// country as a member this month. The International Institute for Applied Systems Analysis (IIASA), Austria - a non-governmental research organization that conducts studies on environmental, social and economic issues in t...

Human Induced Nitrogen Deposition Increasing Carbon Sequestration in Forests

Human induced nitrogen deposition is indirectly "fertilizing" forests, increasing their growth and sequestering major amounts of carbon, a joint study by scientists from 10 universities in the US, Canada and Europe, has revealed. Researchers say the findings paint a more complex view of the carbon cycle in forests. Earlier it was known that logging or other stand-replacement events...

Northern Forests Less Effective Than Tropical Forests in Reducing Global Warming

Forests in the United States and other northern mid- and upper-latitude regions are playing a smaller role in offsetting global warming than previously thought , according to a study appearing in this week's issue of Science. The study, which sheds light on the so-called missing carbon sink, concludes that intact tropical forests are removing an unexpectedly high proportion of carbon...

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