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October 22 News: Rising CO2 Concentrations May Double Methane Output From Rice Production

By Stephen Lacey on October 22, 2012 at 7:36 am

"October 22 News: Rising CO2 Concentrations May Double Methane Output From Rice Production"

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More carbon dioxide in the atmosphere, coupled with rising temperatures, is making rice agriculture a larger source of the potent greenhouse gas methane, according to a study published today in Nature Climate Change by a research team that includes a UC Davis plant scientist. [Daily Democrat]

“Together, higher carbon dioxide concentrations and warmer temperatures predicted for the end of this century will about double the amount of methane emitted per kilo of rice produced,” said Chris van Kessel, professor of plant sciences at UCD and co-author of the study, published in this week’s edition of Nature Climate Change. “Because global demand for rice will increase further with a growing world population, our results suggest that without additional measures, the total methane emissions from rice agriculture will strongly increase.”

Since 2010, Obama has used his executive powers — including his authority under the 1970 Clean Air Act — to press the most sweeping attack on air pollution in U.S. history. [Washington Post]

The uncertainty surrounding a wind industry tax credit decreased General Electric’s energy infrastructure revenues 5 percent in the third quarter as wind turbine sales dropped, the company said Friday. [The Hill]

On Thursday (Oct. 18), 14 year old Samantha Farb of Lecompton, Kansas, became the latest U.S. youngster to file suit over climate change (District Court of Shawnee County) against her State. [Planet Save]

Scottish Renewables said 15% of the country’s total carbon emissions have been displaced by renewables projects. [BBC]

Rome’s notorious traffic, the high cost of gasoline, shortage of parking, limited metro system and frequent transportation strikes are prompting Italians to explore different ways of getting around. [Wall Street Journal]

Farmers drilling ever deeper wells over decades to water their crops likely contributed to a deadly earthquake in southern Spain last year, a new study suggests. The findings may add to concerns about the effects of new energy extraction and waste disposal technologies. [Associated Press]

Government backing for new forms of gas extraction such as “fracking” are coming under acute scrutiny, after a sacked energy minister warned against “betting the farm” on them and green groups expressed alarm at links between the fossil fuel lobby and the Tories. [Guardian]

An international group of ethical funds with investments in Alberta’s oilsands is concerned the industry’s environmental performance could be creating financial risk. [Canadian Press]

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15 Responses to October 22 News: Rising CO2 Concentrations May Double Methane Output From Rice Production

    • prokaryotes says:

      The above video link is a must watch for every climate communicator / climate policy maker, i strongly suggest to feature it here on CP and elsewhere.

  1. prokaryotes says:

    English Summary of the PhD ”Economic Metaphors: A multidisciplinary science study on the implications of metaphors in economic theory for climate policy and the perception of
    money.”
    By Per Espen Stoknes, 2010 http://stoknes.com/Summary_PhD_Stoknes.pdf

    • prokaryotes says:

      This dissertation undertakes an exploration of some strong metaphors underlying the
      language and theories within which the standard economic discourse is framed. Metaphors
      are – according to metaphor theory and the philosophy of sciences – indispensable to
      development of models and theory. They are the cognitive means by which scientific models
      are conceived, constructed and communicated. According to Max Black, metaphors that are
      heavily loaded with associations and also essential to the development of characteristic
      features of the scientific models, can be labelled strong metaphors, according to Max Black.
      One example is ”the atom is like a solar system”. Another is ”DNA is like a code”. A third
      is ”CO2 emissions are like a market”. Some such strong metaphors develop into theoryconstitutive metaphors in that they give a cognitive and social framework within which a specific scientific theory is developed, empirical results are interpreted and models tested against these results.

  2. prokaryotes says:

    Jørgen Randers — Introduction to the Psychology of Climate http://www.youtube.com/watch?v=i45rFa-nMsI

  3. prokaryotes says:

    Richard Alley – Perspectives on Limits to Growth / Climate Science http://www.youtube.com/watch?v=gNxCqU9jbOM&feature=relmfu

  4. Sasparilla says:

    The Green Party Presidential candidate calls out President Obama on climate change (you have to go to a foreign paper to hear about this….there’s some irony in that).

    http://www.guardian.co.uk/environment/2012/oct/22/us-elections-barack-obama-climate-denial

  5. Turboblocke says:

    Thanks for the link about Scotland: the BBC article includes comments that sound like Climate Change denialism from the John Muir trust which is supposed to be about protecting wild places. I have written to them and suggested that they become better informed.

  6. Dr.A.Jagadeesh says:

    Good post on rising on C02 Concentrations.

    As the CO2 content of the air progressively declined millions of years ago, certain plants evolved specialized biochemical pathways and anatomical adaptations that enabled them to increase their intracellular CO2 concentration at the site of its fixation, which allowed the primary carboxylating enzyme rubisco to function more efficiently. The CO2 concentrating mechanism possessed by these CAM plants operates by sequentially reducing CO2 into carbohydrates at two different times of day. The initial reduction of CO2 into a four-carbon sugar is done at night – when CAM plant stomata are open – by the enzyme PEP-carboxylase. Then, during the day when CAM plant stomata are closed, the four-carbon sugar is decarboxylated, increasing the plant’s intercellular CO2 concentration, and the resulting CO2 is subsequently reduced back into a carbohydrate, but this time by rubisco.
    Because this CO2 concentrating mechanism saturates rubisco, some researchers have suggested that CAM plants will not respond to rising levels of atmospheric CO2. However, it has recently been shown that despite the apparent saturation of rubisco, atmospheric CO2 enrichment often elicits robust photosynthetic enhancements in CAM plants.

    Plants which use crassulacean acid metabolism (CAM), which include the cacti and Agaves, are of particular interest since they can survive for many months without water and when water is available they use it with an efficiency that can be more than 10 times that of other plants, such as maize, sorghum, miscanthus and switchgrass. CAM species include no major current or potential food crops; they have however for centuries been cultivated for alcoholic beverages and low-lignin fibres. They may therefore also be ideal for producing biofuels on land unsuited for food production.
    In México, there are active research programs and stakeholders investigating Agave spp. as a bioenergy feedstock. The unique physiology of this genus has been exploited historically for the sake of fibers and alcoholic beverages, and there is a wealth of knowledge in the country of México about the life history, genetics, and cultivation of Agave. The State of Jalisco is the denomination of origin of Agave tequilana Weber var. azul, a cultivar primarily used for the production of tequila that has been widely researched to optimize yields. Other cultivars of Agave tequilana are grown throughout México, along with the Agave fourcroydes Lem., or henequen, which is an important source of fiber that has traditionally been used for making ropes. The high sugar content of Agave tequilana may be valuable for liquid fuel production, while the high lignin content of Agave fourcroydes may be valuable for power generation through combustion. Along with Agave species described above, some other economically important species include A. salmiana, A. angustiana, A. americana, and A. sisalana. Agave sisalana is not produced in México, but has been an important crop in regions of Africa and Australia. Information collected here could thus be relevant to semi-arid regions around the world.
    Agave Competitive Advantages

     Thrives on dry land/marginal land.
    Most efficient use of soil,
    water and light.
     Massive production. Year-around
    harvesting.
     Very high yields with very low or no inputs
     Very high quality biomass and sugars
     Very low cost of production. Not a commodity,
    so prices are not volatile
     Very versatile: biofuels,
    bioproducts, chemicals
     World-wide geographical distribution
     Enhanced varieties are ready
    Dr.A.Jagadeesh Nellore(AP),India
    E-mail: anumakonda.jagadeesh@gmail.com