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Written by Staff
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Friday, 18 May 2012 09:52 |
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Among the highly publicized changes in weather phenomena that are predicted to attend the ongoing rise in the air’s CO2 content are increases in the frequency and severity of all types of storms. As a result, and in an effort to determine if these predictions have any validity, many researchers have examined historical and proxy records in an attempt to determine the validity of this hypothesis. The present review examines what has been learned about storm trends in and around the United Kingdom.
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Read more... [Historical Storm Trends in the United Kingdom]
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Written by Staff
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Thursday, 03 May 2012 09:16 |
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Daytime atmospheric CO2 concentrations above a sheep-grazed pasture in New Zealand were increased by 115 ppm, in order to study the effects of elevated CO2 on seed production, seedling recruitment and species compositional changes.
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Read more... [Effects of Elevated C02 on the Production and Properties of Grassland Seeds]
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Written by Staff
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Friday, 27 April 2012 09:34 |
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Nearly all of Earth’s plant life responds favorably to increases in the air’s CO2 content by exhibiting enhanced rates of photosynthesis and biomass production. But what about other plant characteristics? How do they respond to rising atmospheric CO2? The present review investigates what scientists have learned with respect to plant floral features.
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Read more... [How Flowers Respond to Rising Atmospheric C02]
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Written by Staff
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Wednesday, 18 April 2012 15:21 |
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When dealing with agricultural commodities such as grain crops, seeds comprise the yield; and in such cases, the biomass of one is the biomass of the other. Hence, when looking for effects of elevated CO2 on the seeds of such crops, one is naturally interested in something more than just their final biomass; and there are a number of pertinent papers considering the sources of biomass production, as well as seed properties that go beyond biomass, which we explore in this review.
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Read more... [Beyond Biomass: Atmospheric C02 Enrichment and Crop Seeds]
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Written by Staff
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Wednesday, 11 April 2012 18:43 |
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Under current ambient conditions, plant growth and development are typically carbon-limited, which is why plants generally exhibit increased growth and biomass production in response to atmospheric CO2 enrichment. Next to carbon, nitrogen is usually the second most limiting nutrient to plant growth, followed by phosphorus. Thus, although it is a less significant component of plant tissues than carbon and nitrogen, phosphorus is still required for successful life-cycle completion in many plant species; and, therefore, it is prudent to investigate aspects of plant phosphorus acquisition and biomass production in response to atmospheric CO2 enrichment when phosphorus concentrations in soils are less than optimal.
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Read more... [Interactive Effects of C02 and Phosphorus on Plant Growth]
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Written by Staff
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Wednesday, 04 April 2012 09:55 |
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Among the many alarmist fears of CO2-induced global warming is the concern that the productivity of the biosphere will decline if global temperatures rise to the extent predicted by computer models. Because of this concern, several researchers have investigated the relationship between temperature, atmospheric CO2, and biospheric productivity across a range of spatial and temporal scales. The present review examines what those researchers have learned, focusing on studies that have addressed this issue for the globe as a whole over both the distant and historic past.
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Read more... [Global Biospheric Productivity: The Distant and Historic Past]
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Written by Staff
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Friday, 30 March 2012 11:54 |
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As the air’s CO2 content continues to rise, nearly all of Earth’s plants should continue to exhibit increasing rates of photosynthesis and, as a result, increased biomass production. But what about plants that are suffering from various pathogen-induced diseases? Will they be able to reap the benefits of the many positive effects of atmospheric CO2 enrichment? We have previously investigated this possibility with respect to Earth’s trees and legumes. Here we do it for a number of other agricultural plants.
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Read more... [Interactive Effects of CO2 and Pathogens on Agricultural Plants]
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Written by Staff
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Thursday, 22 March 2012 13:39 |
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In light of the many recent observations, the prospect of earth’s corals being able to successfully cope with the possibility of further increases in water temperatures, be they anthropogenic-induced or natural, appears more than likely, if not altogether certain. Corals have survived such warmth -- and worse -- many times in the past, including the Medieval Warm Period, Roman Warm Period, Holocene Optimum, as well as throughout numerous similar periods during a number of prior interglacial periods; and there is no reason to believe they cannot do it again, if the need arises.
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Read more... [Global Warming, Coral Reefs and Symbiont Shuffling]
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Written by Dennis Ambler
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Thursday, 22 March 2012 13:32 |
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The EPA is effectively no longer under the control of the US Congress; its allegiance is to the UN and implementation of the policies of Sustainable Development via Agenda 21. It has considerable involvement in the IPCC reports and claims the UN body as a peer reviewed authority, in pursuing ever more rigorous controls of “CO2 pollution”, to bring about the realisation of “environmental governance”.
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Read more... [Lisa P Jackson - EPA Administrator: Fulfilling the UN Mission]
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Written by Staff
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Tuesday, 06 March 2012 18:25 |
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One of the great horror stories associated with predictions of CO2-induced global warming is that the warming will be so fast and furious that many species of plants will not be able to migrate towards cooler regions -- poleward in latitude, or upward in elevation -- at rates that are rapid enough to avoid extinction. This claim may sound logical (due to its extreme simplicity); but is it true?
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Read more... [Survival: Can Plants Migrate Fast Enough to Avoid Extinction?]
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