Posted on December 3, 2014 by Bob Berwyn
Findings challenge carbon-balance assumptions of woody biomass energy boosters
A forest health logging site on Swan Mountain near Dillon, Colorado. bberwyn photo.
FRISCO — Logging forests may have a more significant impact on carbon storage in soils than previously believed, Dartmouth College researchers found after taking a close look at at how timber harvesting affects mineral soil carbon over 100 years.
The study found that, while logging doesn’t immediately release carbon stored in a forest’s mineral soils into the atmosphere, it triggers a gradual release that may contribute to climate change over decades. Continue reading
Filed under: agriculture, climate and weather, Environment, Forest health, forests, global warming, US Forest Service | Tagged: carbon cycle, Environment, Forest health, forests, global warming, logging, soil carbon storage | 2 Comments »
Posted on November 22, 2014 by Bob Berwyn
Massive permafrost meltdown could lead to runaway warming.
Carbon cycle subject to major changes as permafrost melts
FRISCO — There’s yet more evidence that melting Arctic permafrost will amplify global warming by releasing huge amounts of heat-trapping greenhouse gases.
In the latest study, Scientists with the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research tracked a pulse of CO2 and other greenhouse gases released to the atmosphere about 14,600 years ago. Continue reading
Filed under: global warming, climate and weather | Tagged: carbon cycle, Environment, global warming, greenhouse gases, permafrost | 1 Comment »
Posted on September 13, 2014 by Bob Berwyn
Major research project to examine carbon cycling, circulation dynamics
A new research project will help explain how the Southern Ocean helps regulate the global climate. bberwyn photo.
FRISCO — Even though it’s eparated from the rest of the world’s oceans by a strong circulation of currents and a distinct temperature gradient, the Southern Ocean is known to be a key driver of global climate and carbon cycles.
Climate researchers and oceanographers may soon know a lot more about the enigmatic ocean as they deploy hundreds of robotic floats deployed around Antarctica in a six-year, $21 million research project aimed at understanding ocean dynamics, chemistry and carbon cycling. The new instruments will increase the flow of Southern Ocean data 30-fold. Continue reading
Filed under: Antarctica, climate and weather, Environment, global warming, ocean acidification | Tagged: carbon cycle, climate, global warming, Southern Ocean | Leave a comment »
Posted on August 11, 2014 by Bob Berwyn
Careful measurements show how roads and other disturbances affect moisture and the ability of fungi and bacteria to break down dead wood
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
Filed under: Colorado, Environment, Forest health, forests | Tagged: carbon cycle, edge effect, Environment, Forest health, forests | Leave a comment »
Posted on July 5, 2014 by Bob Berwyn
A North Atlantic right whale and calf. PHOTO COURTESY NOAA.
Healthy whale populations could buffer oceans from some global warming impacts
FRISCO — Whales may play a much bigger role in ocean ecosystems than previously thought, according to a University of Vermont researcher who studied how the great cetaceans recycle and move nutrients from one region to another.
“For a long time, whales have been considered too rare to make much of a difference in the oceans,” notes University of Vermont conservation biologist Joe Roman.
That was a mistake, he said, explaining how his research shows that whales have a powerful and positive influence on the function of oceans, global carbon storage, and the health of commercial fisheries. Continue reading
Filed under: biodiversity, endangered species, Environment, Marine biology, ocean conservation | Tagged: carbon cycle, climate change, endangered species, Environment, oceans, whales | 1 Comment »
Posted on June 3, 2014 by Bob Berwyn
Abysmal waters play huge role in global carbon cycles
The water in the Antarctic Sound can be smooth as glass. bberwyn photo.
By Summit Voice
FRISCO — The remote Southern Ocean, encircling Antarctica, may be a key driver of the carbon cycle, inhaling and exhaling enough carbon to help shift the global climate in and out of ice ages.
For decades, scientists have been trying to figure out what exactly, along with the known wobbles in Earth’s journey around the sun, may cause the huge shifts that lead to vast ice sheets covering many of the planet’s land masses. Continue reading
Filed under: climate and weather | Tagged: carbon cycle, global climate, ice ages, Last Glacial Maximum, Southern Ocean | Leave a comment »
Posted on April 7, 2014 by Bob Berwyn
Researchers surprised by findings from Mojave desert
FRISCO — The world’s arid regions may be able to take up more carbon than previously thought, according to a new study based on detailed soil and carbon measurements from the Mojave Desert.
The research, led by a Washington State University biologist, will help develop a more accurate global carbon budget — how much carbon remains in the atmosphere as CO2, contributing to global warming, and how much gets stored in the land or ocean in other carbon-containing forms. Continue reading
Filed under: climate and weather, Environment, global warming | Tagged: carbon cycle, climate, deserts, global warming | 1 Comment »