Posted by: r.m. | March 22, 2010

Climate Change: rainfall in the Amazon?


Thomas Lovejoy, biodiversity chair at the Washington DC-based Heinz Center for Science, Economics and the Environment, and chief biodiversity adviser to the president of the World Bank, recently told Tierramerica that the Amazon rainforest was “very close to a tipping point”.

Citing a World Bank report that looks at the synergistic effects of deforestation, climate change, and fires, Lovejoy said that the “tipping point for the Amazon is 20 percent deforestation”. Currently 17-18 percent of the Amazon has been lost. The strength of this study is that it didn’t focus on a single threat, but looked at the combination of impacts currently barraging the ecosystem.

Another tropical forest expert, Simon Lewis of Leeds University, told the BBC earlier this year that “it is very well known that in Amazonia, tropical forests exist when there is more than about 1.5 meters of rain a year, below that the system tends to ‘flip’ to savannah.”

He added: “indeed, some leading models of future climate change impacts show a die-off of more than 40 percent Amazon forests, due to projected decreases in rainfall.”

Be sure to read this clarification of the above article –> !

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Responses

  1. For sure if we stay on this track we are going to lose all our forests! it is just a matter of time till we realize that we can’t go back yet can’t afford to stand still. we would be at point of choas where solutions would be economically destructive and
    what is economically important would be ecologically destructive! Its a matter of choice, yet we can’t see things just as black and white we need to step up for what we believe in! but the point is how!?

  2. IF we loose our forests we loose our planet!!!!!!! Let’s consider that the Amazon forests are the lungs of our planet and since they have already lost about 40% of their trees we are totally heading towards anoxia :S
    The possibility of the Amazon turning into Savannah under the effect of climate change was recently raised in one of our class discussions…And even though forests can withstand droughts it has been more than obvious that they cannot withstand climate change. Each one of us should take responsability of our planet’s future…the contribution of each may save us all.

  3. Im really shocked by how much loss there has been lately in all forests in the world…close to half of the amazon is lost and basically what i think is what goes around comes around…what ever we are doing to harm this environment and enforce this climate change will come around and hurt us…it is only a matter of time til our planet can no longer handle this much of change!

  4. Im really shocked by how much loss there has been lately in all forests in the world…close to half of the amazon is lost and basically what i think is what goes around comes around…what ever we are doing to harm this environment and enforce this climate change will come around and hurt us…it is only a matter of time til our planet can no longer handle this much of change!

  5. this is really a shoker! But the biggest surprise is that we keep on announcing these statistics telling what will happen in case we continue this way but we’re not putting as much effort on trying to change this situation or at least minimize its effects.

  6. The loss of our lungs for any possible reason will lead to out death since our cells won’t get oxygen and our blood will become acidic due to the carbon dioxide’s accumulation. The same thing applies to loosing the lungs of the earth which are the tropical rain forests thanks to our negligence, and the death 40% of it is not affordable.

    The process of reforestation is not as easy as it seems, first due to the large areas, second due to the rapid cycling of nutrients which are “gone with the trees.” If we did bring back the trees, do you think we can bring the huge biodiversity living within it?
    I don’t think so! The same case applies to the general view, therefore satellites not only can see the grounds, but also they can’t see the biodiversity.
    Lots of articles and publication are bombarding the public about climate change.

    “What does it take them to be persuaded?”

  7. The possibility of the Amazon turning into Savannah will surely have devastating impacts all over the world especially climate change. Undoubtedly very huge numbers in deforestation in the statistics considering that the Amazon is one of the major (Clean) areas of the world. We should take action and stop the destruction of the richest place in biodeversity on earth, we almost destroyed all the coral reefs in the ocean and now its the Tropical rain forests’ turn!!! But then again who listens …

  8. The possibility of the Amazon turning into Savannah will surely have devastating impacts all over the world especially climate change. Undoubtedly very huge numbers in deforestation in the statistics considering that the Amazon is one of the major (Clean) areas of the world. We should take action and stop the destruction of the richest place in biodeversity on earth, we almost destroyed all the coral reefs in the ocean and now its the Tropical rain forests’ turn!!! But then again who listens …


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