Bird populations responding to climate change
May 16, 2015 08:53 AM - University of Utah
With puzzling variability, vast numbers of birds from Canada’s boreal forests migrate hundreds or thousands of miles south from their usual winter range. These so-called irruptions were first noticed by birdwatchers decades ago, but the driving factors have never been fully explained. Now scientists have pinpointed the climate pattern that likely sets the stage for irruptions – a discovery that could make it possible to predict the events more than a year in advance.
The researchers found that persistent shifts in rainfall and temperature drive boom-and-bust cycles in forest seed production, which in turn drive the mass migrations of pine siskins, the most widespread and visible of the irruptive migrants. “It’s a chain reaction from climate to seeds to birds,” says atmospheric scientist Court Strong, an assistant professor at the University of Utah and lead author of the study.
No Sunscreen Needed
May 12, 2015 08:47 AM - ENN Editor
With summer sun right around the corner, it is important to be prepared and protect our skin from those potentially harmful rays. Whether you use sunscreen or set up an umbrella for shade at the beach, we should be proactive so we don't get sun-burn.
For us, we take precautions, but how do the rest of the animal kingdom fare? How can animal species spend their whole lives outdoors with no apparent concern about high levels of solar exposure?
According to researchers from Oregon State University, animals make their own sunscreen.
The findings, published in the journal eLife, found that many fish, amphibians, reptiles, and birds can naturally produce a compound called gadusol, which among other biologic activities provides protection from the ultraviolet, or sun-burning component of sunlight.
The researchers also believe that this ability may have been obtained through some prehistoric, natural genetic engineering.
"Living shoreline" can enhance coastal resilience
May 4, 2015 12:09 PM - NOAA Newsroom
The resilience of U.S. coastal communities to storms, flooding, erosion and other threats can be strengthened when they are protected by natural infrastructure such as marshes, reefs, and beaches, or with hybrid approaches, such as a “living shoreline” — a combination of natural habitat and built infrastructure, according to a new NOAA study.
Selective logging may underestimate carbon stock
April 29, 2015 08:20 AM - Rhett A. Butler, MONGABAY.COM
Up to 64 percent of above-ground biomass in selectively logged forests may consist of dead wood left over from logging damage, argues a paper published this week in Environmental Research Letters.
A brief history of Earth Day
April 22, 2015 09:59 PM - Earth Day Network
Each year, Earth Day -- April 22 -- marks the anniversary of what many consider the birth of the modern environmental movement in 1970.
The height of hippie and flower-child culture in the United States, 1970 brought the death of Jimi Hendrix, the last Beatles album, and Simon & Garfunkel’s “Bridge Over Troubled Water”. Protest was the order of the day, but saving the planet was not the cause. War raged in Vietnam, and students nationwide increasingly opposed it.
Lake Mead water levels continuing to drop
April 19, 2015 07:45 AM - Kirk Siegler/NPR
The historic four-year drought in California has been grabbing the headlines lately, but there's a much bigger problem facing the West: the now 14-year drought gripping the Colorado River basin.
One of the most stunning places to see its impact is at the nation's largest reservoir, Lake Mead, near Las Vegas. At about 40 percent of capacity, it's the lowest it's been since it was built in the 1930s.
Study shows how climate affects biodiversity
April 16, 2015 03:18 PM - Uppsala University via AlphaGalileo
A key question in the climate debate is how the occurrence and distribution of species is affected by climate change. But without information about natural variation in species abundance it is hard to answer. In a major study, published today in the leading scientific journal Current Biology, researchers can now for the first time give us a detailed picture of natural variation.
Warmer Waters Threaten Future of Traditional Fish and Chips
April 13, 2015 03:02 PM - ClickGreen Staff, ClickGreen
Popular North Sea fish such as haddock, plaice and lemon sole could be replaced on the menus of the nation’s fish and chip shops as the seas around the UK continue to warm at a rapid rate, a new study warns. Fish distributions are limited by water temperature and some species can only thrive in certain habitats and depths.
Early warning system to detect algal blooms being launched by EPA
April 7, 2015 03:24 PM - US EPA Newsroom
The U.S. Environmental Protection Agency (EPA) announced today that it is developing an early warning indicator system using historical and current satellite data to detect algal blooms. EPA researchers will develop a mobile app to inform water quality managers of changes in water quality using satellite data on cyanobacteria algal blooms from three partnering agencies-- NASA, NOAA, and the U.S. Geological Survey.
The multi-agency project will create a reliable, standard method for identifying cyanobacteria blooms in U.S. freshwater lakes and reservoirs using ocean color satellite data. Several satellite data sets will be evaluated against environmental data collected from these water bodies, which allows for more frequent observations over broader areas than can be achieved by taking traditional water samples.
Shifting temperatures will affect flavors, quality of food
March 27, 2015 10:34 AM - S.E. Smith, Care2
Love scrumptious vegan pizza? You’d better enjoy it while you can, because climate change is moving in to hog a slice. According to an Australian report, Appetite for Change, climate change isn’t just going to decimate existing crops — it’s also going to change the way the survivors taste. And not in a good way. The researchers say that we’re going to be eating increasingly bland, tasteless, mushy food because of the way shifting temperatures are affecting farming, and in fact, it’s already started happening.