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Volume 22:  July 2019 Archive of CO2 Science Postings

The Response of Four Woody Ecosystems to Atmospheric CO2 Enrichment (29 July 2019)
Based on an analysis of four long term (decade-long) CO2 enrichment experiments (to 550-700 ppm), the authors of this study calculated a decadal increase in ecosystem biomass due to CO2 of 29%, whereas the net primary productivity changed by a more modest 22.9%...

Plant Growth Database (29 July 2019)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for European Beech (Uchytilová et al., 2019). To access the entire database, click here.

The Institute for the Human Environment (27 July 2019)
We announce the creation of a new Institute for the Human Environment (www.human-environment.org). Watch a video or read the text of a presentation by Dr. Craig Idso at the 13th International Climate Conference that explains the objective of this new endeavor. Please support us in this effort by donating here...

Elevated CO2 Helps Mitigate Growth Reductions in Pigeonpea Induced by Drought Stress (25 July 2019)
According to the authors of this study, their results demonstrate ďa coordinated and integrated mechanism in pigeonpea to cope with drought stress by taking advantage of elevated CO2.Ē And that is great news for the billions of persons in the developing world who rely on this key cash crop!...

The Impact of CO2 and Nitrogen Supply on Rice Yields (24 July 2019)
A 155 ppm increase in CO2 improved rice grain yield from 16.9 to 26.1% depending on nitrogen supply...

The Increasing Land Sink of the Northern Hemisphere (23 July 2019)
Over the past five decades, vegetation in the Northern Hemisphere has become ever more robust, adding to the growing body of evidence that Earthís terrestrial biosphere is reaping a tremendous benefit from the ongoing rise in the airís CO2 content...

Plant Growth Database (22 July 2019)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Alligator Weed (Liu et al., 2018). To access the entire database, click here.

Interactive Effects of Elevated CO2 and Drought on Carapa (19 July 2019)
A 300 ppm increase in the air's CO2 content is sufficient to fully mitigate the negative effects of drought on the light-saturated net photosynthetic rate of this tropical tree, while also mitigating the effects of water stress on plant biomass...

Antarctic Krill Show Resilience to Ocean Acidification (18 July 2019)
Even at pCO2 levels up to 2000 µatm (pH of 7.4), this keystone species of the Southern Ocean food web is unaffected by so-called ocean acidification...

Plant Growth Database (18 July 2019)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Maize (Pramanik et al., 2018). To access the entire database, click here.

The Mitigating Influence of Elevated CO2 on Nickel Oxide Toxicity (17 July 2019)
As more and more nano-sized nickel oxide particles make their way from consumer products into the environment, the negative effects of this phytotoxic hazard on plants will be reduced, if not eliminated...

Plant Growth Database (16 July 2019)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Wheat (Macabuhay et al., 2018). To access the entire database, click here.

The Different Outcomes of a Static vs. Fluctuating Seawater pCO2 Ocean Acidification Experiment (15 July 2019)
The importance of incorporating daily cycles of seawater pCO2 into the experimental design of ocean acidification experiments is seen in this study, which saw a reversal in survival trends. Instead of declining, rates of survivorship among juvenile cinnamon anemone fish actually increased under elevated pCO2!...

Future Pea Growth in Response to Rising Atmospheric CO2 and Temperature (12 July 2019)
Given the results of this study, it would appear that pea farmers and consumers in Himachal Pradesh, India, will benefit from future CO2-induced increases in pea growth and yield, regardless of whether or not the CO2 rise is accompanied by a rise in temperature...

Plant Growth Database (12 July 2019)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Rice (Rahman et al., 2018). To access the entire database, click here.

The Observed Tolerance of a Decorator Crab to Ocean Acidification (11 July 2019)
In response to five weeks of treatment at seawater pH levels mimicking forecasted near-term changes in ocean chemistry, the decorator crab Pelia tumida showed no change in physiology or behavior, indicating tolerance of predictions of future ocean acidification...

Hourly Rainfall Trends in Uttar Pradesh, India, Since 1969 (10 July 2019)
Neither the CO2 rise nor the temperature increase of the past four-and-a-half decades was sufficient to drive changes in hourly rainfall intensity in northern India...

Plant Growth Database (9 July 2019)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Twiggy Glasswort (Pérez-Romero et al., 2018). To access the entire database, click here.

The Increasing Resilience of Corals to Thermal Stress (8 July 2019)
A global analysis of coral bleaching events reveals an approximate 0.5 °C rise in the temperature threshold for bleaching onset in the last ten years compared with the threshold of bleaching onset during the previous decade...