How does rising atmospheric CO2 affect marine organisms?

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Volume 5 Number 10:  6 March 2002

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

Current Editorial
Recent Coral Mortality Associated with Bleaching: Is It Caused by High Temperature or Disease? ... or Both?: Or are there still other reasons for this disturbing phenomenon?

Subject Index Summaries
Aerosols (Biological - Terrestrial): Biological processes occurring in terrestrial ecosystems possess an array of abilities to alter the atmosphere's complement of aerosols in ways that prevent over-heating of the planet.

Trees (Types - Spruce): A brief review of some of the recently published literature suggests that continued increases in the air's CO2 content will enhance photosynthetic rates and biomass production in spruce trees, which are an abundant component of coniferous forests.

Carbon Sequestration Commentary
Another Silver Lining in a Global Warming Storm Cloud: Are things really as bad as the climate alarmists make them out to be?  Is earth's climate really as sensitive to CO2 as they want us to believe?  Of course not, as real-world data clearly show.  Really!

Current Journal Reviews
A 7,000-Year Record of El Niņo Activity: What does it tell us about the effect of air temperature on moderate to strong El Niņos?

Climate Regime Shifts in the North Pacific Ocean: Simply a Part of Nature: Everyone knows about the dramatic warming of Alaska over the past half-century, and that it must be due to mankind's polluting of the atmosphere with CO2.  But if you believe that story, you must also believe that the large warming was caused by one gigantic belch of the offending gas back in 1976 ... and that we haven't burped since.

Canopy Effects on Photosynthesis in CO2-Enriched Aspen Seedlings: Elevated CO2 increased seasonal rates of photosynthesis in aspen seedlings in a depth dependent manner within the tree canopy, with greater CO2 induced stimulations occurring in the upper as opposed to the lower canopy.

Effects of Elevated CO2 on Herbaceous Plant Communities: Elevated levels of atmospheric CO2 significantly increased total plant biomass in model herbaceous communities similar to those that are typically the first to grow on abandoned agricultural fields in the northcentral USA.

Short-Term Effects of Elevated CO2 on Photosynthesis in Grass Species Differing in Photosynthetic Physiologies: Short-term elevated CO2 exposure enhanced rates of photosynthesis in Panicum and Flaveria genera, with C3 species displaying greater CO2-induced enhancements than C3-C4 intermediates, which exhibited greater enhancements than C4 species.