Arctic may help remove, not add, methane
August 25, 2015 08:54 AM - Morgan Kelly, Princeton Journal Watch
In addition to melting icecaps and imperiled wildlife, a significant concern among scientists is that higher Arctic temperatures brought about by climate change could result in the release of massive amounts of carbon locked in the region’s frozen soil in the form of carbon dioxide and methane. However, new research led by Princeton University researchers and published in The ISME Journal in August suggests that, thanks to methane-hungry bacteria, the majority of Arctic soil might actually be able to absorb methane from the atmosphere rather than release it.
How a warming climate is impacting wild boar in Europe
August 23, 2015 07:54 AM - Paul Brown, The Ecologist
Increasingly mild winters have caused an abundance of acorns and beech nuts in Europe's woodlands, writes Paul Brown, triggering a wild boar population explosion - just one of the effects of warming climate on wildlife populations.
”‹Wild boar populations in Europe are getting out of control - and scientists are blaming climate change.
There are now millions of wild boar spreading out from their preferred woodland habitat, moving into city suburbs, and even crossing national boundaries to countries that had thought they were extinct.
Is the California Drought Causing Land to Sink?
August 21, 2015 08:56 AM - Jet Propulsion Laboratory
As Californians continue pumping groundwater in response to the historic drought, the California Department of Water Resources today released a new NASA report showing land in the San Joaquin Valley is sinking faster than ever before, nearly 2 inches (5 centimeters) per month in some locations.
Mercury and Selenium are Accumulating in the Colorado River Food Web
August 20, 2015 09:01 AM - USGS Newsroom
Although the Grand Canyon segment of the Colorado River features one of the most remote ecosystems in the United States, it is not immune to exposure from toxic chemicals such as mercury according to newly published research in Environmental Toxicology and Chemistry. The study, led by the U.S. Geological Survey, found that concentrations of mercury and selenium in Colorado River food webs of the Grand Canyon National Park, regularly exceeded risk thresholds for fish and wildlife.
Scientists discover what causes soil acidification
August 19, 2015 02:28 PM - James Cook University
Australian and Chinese scientists have made significant progress in determining what causes soil acidification – a discovery that could assist in turning back the clock on degraded croplands.
How will global food supply be affected by climate change?
August 19, 2015 08:05 AM - Erik Stokstad, Science/AAAS
In 2007, drought struck the bread baskets of Europe, Russia, Canada, and Australia. Global grain stocks were already scant, so wheat prices began to rise rapidly. When countries put up trade barriers to keep their own harvests from being exported, prices doubled, according to an index of the Food and Agriculture Organization of the United Nations. Just 3 years later, another spike in food prices contributed to the Arab Spring uprisings. Such weather-related crop disasters will become more likely with climate change, warns a detailed report released today by the Global Food Security (GFS) program, a network of public research funding agencies in the United Kingdom.
Help the Monarch recover
August 19, 2015 06:42 AM - DAVID SUZUKI FOUNDATION via The ECRReport, ECOreport
Jode Roberts has spent a lot of the summer checking out ditches and fields along the sides of roads, railways and trails. At first, he didn’t like what he was seeing. Roberts, who is leading the David Suzuki Foundation’s effort to bring monarchs back from the brink, was searching for signs that the butterflies had visited patches of milkweed plants. Despite the bleak start, he recently hit the jackpot: a half-dozen eggs and a couple of monarch caterpillars, calmly munching on milkweed leaves.
Over the past millennium, eastern monarch butterflies have migrated northward from Mexico in spring, arriving in southern Ontario, Quebec and the Maritimes in early summer, where they lay eggs on the undersides of milkweed leaves. In the following weeks, their caterpillars hatch and eat a steady milkweed diet. In late summer, they form chrysalises and undergo the amazing transformation into butterflies. They then begin fattening themselves for the arduous return to the Mexican alpine forests where they overwinter.
The Fukushima Accident Lives On
August 18, 2015 12:14 PM - Dr Ian Fairlie, The Ecologist
New evidence from Fukushima shows that as many as 2,000 people have died from necessary evacuations, writes Ian Fairlie, while another 5,000 will die from cancer. Future assessments of fatalities from nuclear disasters must include deaths from displacement-induced ill-heath and suicide in addition to those from direct radiation impacts.
High levels of natural uranium identified in 2 major U.S. aquifers
August 17, 2015 03:30 PM - University of Nebraska-Lincoln
Nearly 2 million people throughout the Great Plains and California live above aquifer sites contaminated with natural uranium that is mobilized by human-contributed nitrate, according to a study from the University of Nebraska-Lincoln.
Quantifying CO2 from Streams
August 17, 2015 09:03 AM - University of Wyoming
Work by a University of Wyoming professor and a recent UW Ph.D. graduate has provided a more complete picture of the role of rivers and streams in the global carbon cycle.