Posted on November 9, 2015 by Bob Berwyn
Study tracks neonicotinoid pesticide exposure in wild bee populations. @bberwyn photo.
Are native bees at risk from systemic pesticides?
Native wild bees are being exposed to toxic neonicotinoid pesticides, according to new U.S. Geological Survey research in northeastern Colorado.
The research focused on native bees because there is limited information on their exposure to pesticides. In fact, little is known about how toxic these pesticides are to native bee species at the levels detected in the environment.
“We found that the presence and proximity of nearby agricultural fields was an important factor resulting in the exposure of native bees to pesticides,” said USGS scientist Michelle Hladik, the report’s lead author. “Pesticides were detected in the bees caught in grasslands with no known direct pesticide applications.” Continue reading
Filed under: agriculture, Environment | Tagged: biodiversity, Environment, honeybees, native bees, neonicotinoids, pesticides, USGS | 1 Comment »
Posted on October 20, 2015 by Bob Berwyn
Berries gleam in the rains of autumn.
Chestnut leaves piling up.
Last fruits of autumn cling to the branches in the Upper Austrian Mühlviertel.
Seasonal stillness on the farm.
Finding color on rainy, gray days isn’t all that hard, especially in the fall, when the plant world erupts in one last blast of color before winter’s grays and whites take over. Keeping my iPhone dry deep in the pocket of a raincoat, I set out for a short walk along the base of the Pöstlingberg, where residential streets give way to small urban garden plots, hedges and farm fields, looked for the brightest splotches I could find, including backyard fruit trees and berry bushes along the trail.
Filed under: agriculture, Austria, Europe, Morning photo, photography, seasons, Travel | Tagged: Austria, berries, fall colors, mobile photography, Travel | Leave a comment »
Posted on October 5, 2015 by Bob Berwyn
California’s Central Valley, as seen from the International Space Station. Photo courtesy NASA Earth Observatory.
‘The Central Valley has many areas where recent groundwater levels are more than 100 feet below previous historical low …’
Farmers in California’s Central Valley pumped more groundwater than ever during the state’s ongoing drought, causing aquifers to drop to new record low levels, according to the U.S. Geological Survey.
The agency recently launched a website to help track Central Valley groundwater depletion and land subsidence. A new paper released about the same time shows geographical nuances in the decline. The biggest changes are in the southern Central Valley, where farmers have shifted from planting annual and seasonal crops to perennial plants. Continue reading
Filed under: agriculture, climate and weather, Drought, global warming | Tagged: California drought, Central Valley, climate change, groundwater | 1 Comment »
Posted on September 21, 2015 by Bob Berwyn
Shifting to sustainable land use practices would boost global economy and help address global warming
Unsustainable land use practices, exacerbated by climate change, could result in mass migration of 50 million people within 10 years. Photo courtesy UN.
Unsustainable land-use practices are a $6.3 trillion drain on the global economy, according to a new report from the United Nations University, which assesses the value of ecosystem services provided by land resources such as food, poverty reduction, clean water, climate and disease regulation and nutrients cycling.
That figure is equal to about 15 percent of global GDP, the researcher said, adding that unchecked land degradation could force up to 50 million people to migrate away from affected areas within the next 10 years.
Effectively addressing land degradation could help avert that humanitarian crisis and add US $75.6 trillion to annual world income, according to the report, “The Value of Land”, produced by The Economics of Land Degradation Initiative.
Filed under: agriculture, climate and weather, Environment | Tagged: agriculture, climate change, development, Environment, sustainable land use | Leave a comment »
Posted on September 20, 2015 by Bob Berwyn
Scientists say forest conservation and restoration efforts should be stepped up. @bberwyn photo.
Tropical forests in poor countries still taking the biggest hit
Global forest conservation efforts are improving, but the world is still losing trees at an unsustainable rate — especially in the tropics, according to the UN’s latest Global Forest Resources Assessment.
Since 1990, total forest area has decreased by about 3 percent, an area about the size of South Africa. The report shows that, while the pace of forest loss has slowed, the damage over the past 25 years has been considerable.
Filed under: agriculture, Environment, forests | Tagged: deforestation, Environment, forest conservation, forest restoration, global forests | Leave a comment »
Posted on August 16, 2015 by Bob Berwyn
‘Forbearance’ of water use eyed as new tool in race to avoid water crisis
FRISCO — Water allocation in the Colorado River Basin may be entering a new era, officials said last week as they announced finalization of 10 pilot projects that will allow farmers, municipalities and other water users to voluntarily and temporarily forego use of their water in exchange for compensation.
The pilot projects, including one in the Yampa River Basin, are the result of a cooperative effort by Wyoming, Colorado, Utah, and New Mexico to shore up declining reservoir levels if the 15-year drought that has plagued the Colorado River continues into the future. Continue reading
Filed under: agriculture, Environment, rivers, water | Tagged: Colorado River, compact call, drought, Lake Powell, water conservation, western water | 1 Comment »
Posted on July 30, 2015 by Bob Berwyn
Wine without pesticides?
Chemical analysis informs potential hybridization efforts
FRISCO — As the widespread and disastrous consequences of heavy pesticide use become ever-more apparent, wine-makers and grape growers are trying to figure out ways to make their grapes more resistant to bugs and fungi without using toxic chemicals.
The answer may lie in crossing the domestic grape species used in most wine production — Vitis vinifera — with native wild American grapes, like Vitis californica, which make terrible wine but are pest-resistant. Continue reading
Filed under: agriculture, Environment | Tagged: Environment, fungicides, grapes, organic wine, pesticides, wine | Leave a comment »