How does rising atmospheric CO2 affect marine organisms?

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Volume 5 Number 23:  5 June 2002

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

Current Editorial
Global Warming and Extreme Weather: Impacts on Agriculture (Italy): Climate alarmists say that increasing temperatures lead to increases in all sorts of extreme weather phenomena that bode badly for almost everything.  Consequently - and since the world has recently experienced a centennial-scale period of warming that is typically described as unprecedented within the past millennium - one would expect to see some devastating consequences in a number of different areas.  So how has the agriculture sector fared?

Subject Index Summaries
Agriculture (Species -- Strawberry): A review of the recently published literature suggests that increases in the air's CO2 content will enhance photosynthesis and fruit yield in strawberry plants.

Holocene (Regional -- North America): The climate of the interglacial period in which we live, i.e., the Holocene, exhibits a millennial-scale oscillation that alternately produces several-hundred-year intervals of warmth and cold, the most recent of which intervals is the Modern Warm Period.  Evidence from North America indicates that this current warm period is likely not yet as warm as the Medieval Warm Period of a thousand years ago and, hence, that it is likely not related to the historical rise in the air's CO2 content.

Current Journal Reviews
Glacier Mass Balance Trends: Up or Down?: In view of the dramatic warming climate alarmists say has occurred over the past two decades or so, earth's glaciers should be rapidly wasting away; and many of them are.  But when all of the data are considered ...

Climate and Alpine Ecosystem Changes in Glacier National Park: With all the talk of disappearing glaciers in the National Park made famous by such icy features, one would also expect to see forests moving upward in elevation in response to rising temperatures ... if there really were rising temperatures.

Long-Term Effects of Elevated CO2 on Carbon-Based Secondary and Structural Compounds in Plant Leaves: Elevated CO2 often increases the concentrations of secondary carbon-based compounds in the leaves of plants in short-term controlled-environment experiments.  Does the same occur in plants that are naturally exposed to higher-than-normal atmospheric CO2 concentrations throughout their entire existence?

Effects of Elevated CO2 on Nitrogen Fixation in Leguminous Acacia Species: Elevated CO2 increases rates of photosynthesis and growth in nitrogen-fixing Acacia species, but will it enhance their abilities to symbiotically fix nitrogen?

Effects of Elevated Atmospheric CO2 on Water Relations in a Scrub-Oak Community: Elevated CO2 typically reduces rates of evapotranspiration in agricultural crops.  But does it do so in mature scrub-oak communities?