How does rising atmospheric CO2 affect marine organisms?

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Volume 12 Number 45:  11 November 2009

The Progressive Nitrogen Limitation Hypothesis is Refuted by the Palaeorecord of the Late Quaternary: Inferred ecosystem changes throughout the Late Quaternary cannot be adequately explained without invoking the demonstrable effects of atmospheric CO2 enrichment on earth's vegetation, one of which is the inability of low soil nitrogen concentrations to limit the strength of carbon dioxide's aerial fertilization effect.

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from Laguna Aculeo, Central Chile.

Subject Index Summary
ENSO (Model Inadequacies): How numerous are they? ... and how serious?

Journal Reviews
The Temporal Trend in U.S. Hail Damage: Which way is it trending? ... and why?

Does Global Warming Decline with Increasing Elevation?: The answer may have important implications for the survival of alpine species in a warming world.

The Fate of Amazonian Forests in a CO2-Enriched and Warmer World: Would they be able to survive the excessive heat predicted by state-of-the-art climate models?

Progressive Nitrogen Limitation in a Brackish Tidal Marsh: Does the discredited hypothesis apply any better here, at the edge of the sea, than it does on land?

Effects of Atmospheric CO2 Enrichment on Early Root Growth of Tomato Plants: There's nothing like a substantial increase in the air's CO2 content to get a plant off to a good start at life, and to truly excel in the never-ending struggle to extract from the soil what it needs to fulfill its true genetic potential.