Posted on March 26, 2015 by Bob Berwyn
New study confirms the transgenic impacts of endocrine disrupting pollutants in aquatic species.
Researchers warn of long-term impacts to aquatic ecosystems
FRISCO — Fish exposed to trace amounts of endocrine-disrupting chemicals like BPA may not show any immediate ill effects, but the adverse impacts can show up three generations later, researchers said after conducting lab tests that confirm the transgenic effects of the pollutants.
The chemicals are part of a new class of pollutants that often aren’t addressed by traditional water treatment facilities, and aquatic environments are the ultimate reservoirs for many of the contaminants, some of which mimic the functions of natural hormones. Continue reading
Filed under: biodiversity, Environment, rivers, water, water quality | Tagged: endocrine disruptors, Environment, water quality | Leave a comment »
Posted on March 14, 2015 by Bob Berwyn
Activist: ‘These new rules read like an oil industry wish list”
FRISCO — A set of proposed new water rules has unleashed a storm of protest in Canada, where citizen and conservation groups charge that the government is giving away the store to energy companies exploiting the tar sans of Alberta.
The updated regulatory framework sets guidelines on how much water oil sands companies can extract from the Athabasca River, and guidelines regarding the management and production of toxic tailings waste. Continue reading
Filed under: energy, Environment, rivers, water | Tagged: Alberta, Athabasca River, energy, Environment, tar sands | 2 Comments »
Posted on March 6, 2015 by Bob Berwyn
Excess nutrient pollution in streams means less organic carbon available for aquatic organicsms. bberwyn photo
Excess nitrogen and phosphorus speed breakdown of forest litter
FRISCO — Along with causing unwanted and potentially toxic blooms of algae, nutrient pollution also causes a significant loss of forest-derived carbon in stream ecosystems — to the detriment of aquatic life, according to a research team led by University of Georgia scientists.
Even moderate amounts of nitrogen and phosphorus in a stream cause the carbon to break down twice as fast, their research found. In Colorado, regulators have made efforts to reduce nutrient pollution in streams. Continue reading
Filed under: Environment, rivers, water, water quality | Tagged: Environment, nutrient pollution, stream carbon cycles, water pollution, water quality | Leave a comment »
Posted on March 1, 2015 by Bob Berwyn
Pesticide pollution hotspots are identified in a new map.
Global warming could exacerbate pesticide woes
FRISCO — The world has a long way to go to come to grips with pesticide pollution say scientists who recently created a global map showing which areas are most susceptible.
Their modeling suggests that streams across about 40 percent of the planet’s surface are at risk from the application of insecticides, with the Mediterranean region, the USA, Central America and Southeast Asia among the hotspots.
On average, farmers apply about 4 million tons of agricultural pesticides annually, equating to an average of 0.27 kilograms per hectare of the global land surface. Continue reading
Filed under: Environment, rivers, water, water quality | Tagged: agriculture, Environment, pesticides, pollution | 1 Comment »
Posted on February 27, 2015 by Bob Berwyn
Will the world get it together on water?
Upfront spending would avoid the huge costs of escalating conflicts
FRISCO — Big investments in water infrastructure are needed around the world to avert future conflicts over the world’s most essential resource. Looming shortages of water could trigger conflicts and mass migrations, contributing to social and political instability, the report warns.
“The consequence of unmet water goals will be widespread insecurity creating more international tension and conflict,” said lead author Bob Sandford. “The positive message is that if we can keep moving now on water-related sustainable development goals we can still have the future we want,” he said. Continue reading
Filed under: Environment, rivers, water, water quality | Tagged: drought, Environment, sustainable development, War, water | 1 Comment »
Posted on February 26, 2015 by Bob Berwyn
Findings come as EPA edges toward final new clean water rule
By Summit Voice
Geographically isolated wetlands like prairie potholes and desert playas in the Southwest are critical to water quality and also provide many other ecosystem services — even though they may lack the regulatory protections of other wetlands, according to Indiana University researchers.
Continued loss of such wetlands is likely “to cause serious harm to North American waters,” according to John M. Marton, a researcher with the IU Bloomington School of Public and Environmental Affairs.
“Geographically isolated wetlands provide important benefits such as sediment and carbon retention, nutrient transformation and water-quality improvement, all of which are critical for maintaining water quality,” Marton said, discussing the conclusions of a new article appearing in BioScience. Continue reading
Filed under: Environment, rivers, water, water quality, wetlands | Tagged: clean waters of the US, Environment, isolated wetlands, water quality, wetlands | 1 Comment »
Posted on February 18, 2015 by Bob Berwyn
Browns Canyon, in central Colorado, will be designated as a national monument by President Barack Obama.
Central Colorado gorge a key piece of state’s recreation economy
FRISCO — A long campaign by public land advocates and their political allies has paid off, as President Barack Obama will use his executive power under the Antiquities Act to designate Browns Canyon, in Chaffee County, as a national monument.
Along with Browns Canyon, Obama is also designating the Honouliuli Internment Camp in Hawaii and Chicago’s historic Pullman neighborhood. An official White House announcement is expected Thursday. Continue reading
Filed under: BLM, Colorado, Environment, public lands, rivers | Tagged: Antiquities Act, Arkansas River, Browns Canyon, Browns Canyon National Monument, Chaffee County Colorado, Colorado, Environment, public lands | Leave a comment »