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Volume 9 Number 14:  5 April 2006

Temperature Record of the Week
This issue's Temperature Record of the week is from Crater Lake, OR.  Visit our U.S. Climate Data section to plot and view these data for yourself.

Elevated CO2 Mediates Fungal Pathogen Attacks on Red Maple Trees: The beneficial impacts are brought about by CO2-induced changes in leaf physiology and chemistry, which phenomena likely also operate in many other plant pathosystems.

Medieval Warm Period Record of the Week
This issue's Level 3 Medieval Warm Period Record of the Week is from the Lake Nautajärvi, Finland.  To access the entire Medieval Warm Period Project's database, click here.

Subject Index Summary
Agriculture (Species - Maize): Atmospheric CO2 enrichment impacts a variety of physiological processes of corn in ways that enhance its productivity and water use efficiency, while past and predicted climate changes will likely increase the area of the earth that can be planted to the crop.

Journal Reviews
Winter Warming of the Antarctic Troposphere: The new finding raises many more questions than it answers.

North Atlantic Regime Shift: Is It Déjà Vu All Over Again?: The North Atlantic region, just now, is on a path to getting back to the peak warmth and biological activity it experienced in the 1930s and 40s.

Carbon Sequestration in a Legume/Grass Community: How is it affected by soil nitrogen and phosphorus concentrations?

Nectar Production in Flowers of a Perennial Temperate Clonal Herb: How is it affected by enriching the air with carbon dioxide?

CO2 Effects on a Seaweed of Economic, Health and Environmental Importance: What are the effects, and how important are they?