How does rising atmospheric CO2 affect marine organisms?

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Volume 6 Number 17:  23 April 2003

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

Current Editorial
More Studies Rebuff U.S. National Research Council Concerns About Human-Induced Abrupt Climate Change: As science progresses and more is learned about earth's linked atmosphere-ocean system and the forces that define its most basic characteristics, climate-alarmist scare stories of catastrophically large and abrupt climate change becoming more likely as the air's CO2 content rises are being seen for what they really are: errant scenarios.

Subject Index Summaries
Health Effects of Temperature (Cold Weather): What is more deadly: unseasonable heat or unseasonable cold?  The answer is cold; and it's not even a contest, as revealed by our brief review of the relevant scientific literature.

Herbivory (Herbaceous Plants): Will organisms that feed on herbaceous plants be affected by the ongoing rise in the air's CO2 content?  Will there be differences between agricultural and natural ecosystems?  And how might future genetic engineering programs impact these phenomena?

Current Journal Reviews
Coping with Heat in a Warming World: As temperatures rise, one would think more heat-related health problems would occur during the warmest part of the year.  Is this the case?

Dome Fuji Speaks: What does it have to tell us about the nature of earth's climate, both past and present?

Competing Influences of Elevated CO2 and Ozone on Canopy Crown Structure in Silver Birch: What do they do?  And how do they compare?

Interactive Effects of Air Vapor Pressure Deficit and CO2 Concentration on Leaf Gas Exchange in a C3 and C4 Crop: Increasing the air's vapor pressure deficit reduces CO2 assimilation rates in plants growing in ambient air.  How might this phenomenon be altered in a CO2-enriched environment?

Effects of Elevated CO2 on Mature Loblolly Pine Trees: Most tree seedlings respond positively to increases in the air's CO2 concentration by displaying enhanced rates of photosynthesis and greater biomass production.  However, some individuals have suggested that mature trees may lack the ability to do so. The authors of this paper explore this question.