Blogs

Rapid Range Shifts of Species Associated with High Levels of Climate Warming

Science 19 August 2011: Vol. 333 no. 6045 pp. 1024-1026 DOI: 10.1126/science.1206432
I-Ching Chen, Jane K. Hill, Ralf Ohlemüller, David B. Roy, Chris D. Thomas

Climate change will substantially decrease the duration and thickness of wintertime ice cover on many North American lakes.

Seasonal or year-round ice cover is crucial for the health of lakes located in cold environs, but looks set to decline with continued emissions of carbon dioxide.

Cheatgrass on the move - climate envelope modeling

Grist article highlighting some climate envelope modeling on cheat grass – contraction in the southern range (potential for restoration?), expansion in the northern range (triage?)…

Will climate change hasten the spread of invasive plants?
by Seth Shulman
4 Jan 2011 11:43 AM

Many Coastal Wetlands likely to Disappear this Century

AGU Release No. 10–41 1 December 2010

Many coastal wetlands worldwide, including several on the U.S. Atlantic coast, may be more sensitive than previously thought to climate change and sea-level rise projections for the 21st century.

Scientists engaged in an international research modeling effort have made this conclusion in a paper published today in Geophysical Research Letters, a journal of the American Geophysical Union. The researchers identified conditions under which coastal wetlands could survive rising sea level.

Winners: Arctic Shrubs Thrive with Warming

The following is from the Journal Nature (466: p. 534 Date published (29 July 2010)

"Unlike most tundra plant species, Arctic evergreen shrubs seem to be resilient to climate change. James Hudson and Greg Henry at the University of British Columbia in Vancouver were surprised to find that increases of 1–1.3 °C did not affect the height or abundance of shrub species, including the Arctic white heather Cassiope tetragona, during a 15-year Arctic study.

Sea level rise to be more than expected

New study indicates that sea level could rise by 0.6–1.6 metres by 2100.

In its 2007 assessment report, the Intergovernmental Panel on Climate Change estimated that thermal expansion of the ocean and ice melt alone could raise sea level by 18–59 centimeters this century.

More to come soon