There is a lack of reliable data on land degradation but it is likely that soil degradation has affected some 1 900 million hectares of land worldwide (UNEP/ISRIC 1991). The largest area affected, about 550 million hectares, is in Asia and the Pacific. In China alone, between 1957 and 1990, the area of arable land […]
… Model output showing the impact of ocean acidification on the ocean’s carbonate saturation state in 1765, 2040, 2060, 2080, and 2100 (NOAA). Ocean Acidification Models 1765, 2040, 2060, 2080, and 2100 Technorati Tags: ocean acidification,shellfish decline,ecosystem disruption,carbon dioxide
The recent observed collapse in the population cycles of small rodents, shown here for lemmings in northeast Greenland, as a result of diminished snow cover in the Arctic [from O. Gilg, B. Sittler, I. Hanski, Glob. Change Biol. 10.1111/j.1365-2486.2009.01927.x (2009)]. Eric Post, et al., Ecological Dynamics Across the Arctic Associated with Recent Climate Change, Science, […]
From Calculated Risk: Here is a hockey stick graph … Fannie Mae reported that the serious delinquency rate for conventional loans in its single-family guarantee business increased to 4.17 percent in July, up from 3.94 percent in June – and up from 1.45% in July 2008. “Includes seriously delinquent conventional single-family loans as a […]
The free ecosystem service that has been buying us time may not last. Richard Betts, Mike Sanderson, Debbie Hemming, Mark New, Jason Lowe, Chris Jones, 4°C global warming: regional patterns and timing, 4 Degrees and Beyond Conference, [pdf], p. 9 Technorati Tags: carbon sequestration,carbon dioxide,global warming,climate change
Reductions in terrestrial snow cover (blue) and sea ice (red) extent during June to August over the Northern Hemisphere since the late 1960s and 1970s, respectively. Data are from the Global Snow Lab, Rutgers University, New Jersey, and the U.S. National Snow and Ice Data Center, University of Colorado, Boulder. Eric Post, et al., Ecological […]
Northward expansion of insect herbivores such as the winter moth in northernmost Fennoscandia (intact mountain birch forest is shown in green, severely defoliated forest during the most recent outbreak in 2005 to 2008 is in dark brown, and tundra beyond the tree line is in white; reports of local winter moth outbreaks before the last […]
Change measurements are median filtered (10-km radius), spatially averaged (5-km radius) and gridded to 3 km, from intervals (Dt) of at least 365 d, over the period 2003–2007 (mean Dt is 728 d for Antarctica and 746 d for Greenland). East Antarctic data cropped to 2,500-m altitude. White dashed line (at 81.5° S) shows southern […]
Coastal Louisiana has lost an average of 34 square miles of land, primarily marsh, per year for the last 50 years. From 1932 to 2000, coastal Louisiana lost 1,900 square miles of land, roughly an area the size of the state of Delaware. If nothing more is done to stop this land loss, Louisiana could […]
Woodland caribou is one of the species likely to be extirpated from regions subjected to Steam Assisted Gravity Drainage (SAGD) development. Caribou declines across Alberta have been correlated with the level of industrial development within their ranges.43 In the past ten years, the East Side Athabasca River caribou herd, whose range overlaps much of the […]
