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Global warming triggers surge in tree growth

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Global warming speeds tree growth. bberwyn photo.

Some species growing up 70 percent faster than 50 years ago

Staff Report

FRISCO — Some trees are growing up to 70 percent faster than just a half century ago, as global warming supercharges their metabolism, German researchers report in a new study published in Nature Communications.

Three decades ago, forest dieback was a hot topic, with the very survival of large forest ecosystems seemingly in doubt. But instead of a collapse, the latest studies indicate that forests have actually been growing at a faster rate. The new data from the Technische Universität München comes from forest plots that have been closely monitored since 1870. The forested areas are also representative of the typical climate and environmental conditions found in Central Europe. Continue reading

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Climate: Longer droughts, warmer temps to fuel massive increase in European forest fires

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Smoke from forest fires in Greece streams out across the Mediterranean Sea. GIF composite image via NASA and Wikipedia.

Study projects 200 percent increase in burned areas by 2090 without mitigation and adaptation

Bob Berwyn

FRISCO —The American West isn’t alone in facing an increased wildfire threat. Global warming is expected to result in a sharp increase in European forest fires during the coming decades. By 2090, areas burned by fires could increase by as much as 200 percent, according to a new study published in the journal Regional Environmental Change.

Warmer temperatures and longer droughts will combine to fuel forest fire conditions in areas that are already susceptible, particularly the Mediterranean region, the researchers said, suggesting that better forest management, including preventive fires, could keep the increase to less than 50 percent. Continue reading

Environment: New mapping project traces global forest degradation

Spruce beetle populations are surging in the southern Rocky Mountains.

Spruce beetle populations are surging in the southern Rocky Mountains.

Conservation advocates say more protection needed to protect critical ecosystem services

Staff Report

FRISCO — Forest degradation continues unchecked in many parts of the world and especially in the northern hemisphere boreal forest belt in Canada, Russia and Alaska, conservation advocates said this week, unveiling new maps showing forest impacts across more than 100 million hectares — an are three times the size of Germany.

Just since 2000, about 8 percent of the world’s remaining intact forest landscapes have been subject to some type of degradation from human activities, including logging and energy development.

The Greenpeace GIS Laboratory, the University of Maryland and Transparent World, in collaboration with the World Resources Institute and WWF-Russia, used satellite technology to determine the location and extent of the world’s last remaining large undisturbed forests, important harbors for biodiversity that are still unaffected by logging and infrastructure such as roads, mining and oil or gas development. Continue reading

Are New Mexico forests holding steady in the face of climate change, drought and wildfires?

New inventory assesses state’s woodland resources
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STAFF REPORT

FRISCO — Mortality is increasing and growth is slowing down in New Mexico’s forest lands, according to a new forest inventory released in late August. The only species showing overall growth are ponderosa and piñon pines, as well as junipers, as insects, wildfires drought and disease take an increasing toll on the state’s woodlands.

Forests grow on about 25 million acres in New Mexico, with 44 percent on private lands and 31 percent on national forest lands. About 40 percent (10.8 million acres) of the forests are piñon-juniper woodlands, by far the state’s most extensive forest type. Gambel oak is the most abundant tree species by number of trees, and ponderosa pine is the most abundant by volume or biomass. Overall, researchers estimate there are more than 6 billion live trees growing in the state.

The inventory documented the drought-induced piñon pine die-off in the early 2000s, estimating that about 8 percent the species died, but noted that the mortality rate has tapered off.New Mexico’s aspen forests, covering about 380,000 acres, held steady in the past decade. Continue reading

Forest fragmentation alters global carbon cycle

Careful measurements show how roads and other disturbances affect moisture and the ability of fungi and bacteria to break down dead wood

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Forest fragmentation has a big impact on the carbon cycle. bberwyn photo.

By Summit Voice

FRISCO —Logging roads, clearcuts and other disturbances that fragment forests can slow the decay of dead wood and significantly alter the cycling of carbon and nutrients in woodland ecosystems, according to a new study.

Scientists with Earthwatch and the University of Exeter (UK) took a hard look at global forest fragmentation, starting the well-known fact that the edge effect influences temperature, moisture and other elements of forest microclimates. But the effect on the carbon cycle is less understood, so the researchers used on-the-ground experiments combined with modeling to try and fill the gaps. Continue reading

The Rocky Mountain Climate Ranger project

Crowdfunding project includes matching funds

By Bob Berwyn

FRISCO — The generous response to last month’s call for grassroots donations has encouraged us to tap into a great fundraising opportunity with Beacon, a cool new journalism incubator and crowdfunding platform.

More than 20 people, from California to Pennsylvania, responded with donation. We know there are more Summit Voice readers and subscribers ready to step up, and this could be the best time, with a generous sponsor willing to match every dollar you donate. Continue reading

Wildfire activity well below average for year to-date

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The far West and northern Great Basin are especially prone to wildfires this summer.

Potential for big fires still a concern in California

By Bob Berwyn

FRISCO — For the first time in 10 years, the acreage burned by wildfires was less than 1 million acres as of the beginning of July. With extreme drought and high fire danger in parts of the far West, that could change quickly, but for now, both the number of fires and the acreage affected is well below average for the season, according to the National Interagency Fire Center.

To-date, 26,684 fires have burned across about 909,000 acres, less than half he average 2.5 million acres for this time of year. By comparison, wildfires had already burned across more than 1.7 million acres last year at this time. In 2011 that number was at 4.8 million acres. Continue reading

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