audibleecoscience Earth Headphones

Audibleecoscience is a database of podcasts on subjects related to global change biology. It is designed as a resource for the general public and for educators looking to assign "required listening" to their students. Reviews of each podcast and links to the original source have been provided by students taking the IB107 class at the University of Illinois. The database is fully text searchable or you can browse on your favorite subject...
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Forests

Tropical rainforest revenge for a warming planet

Media Source: Commonwealth Scientific and Industrial Research Organisation
Program Name: CSIROpod
Show Name: Tropical rainforest revenge for a warming planet
Broadcast Year: 2013
Original Link: http://www.csiro.au/Portals/Media/Tropical-ecosystems-regulate-variations-in-Earths-carbon-dioxide-l

Rising temperatures related to climate change in the world have been recently observed to have a corresponding impact in the release of carbon dioxide. New research is now revealing that changes in temperature over the tropics have inconsistent effects on both photosynthesis, which is absorption of carbon dioxide, and respiration, the release of carbon dioxide, two of the most important eco-services provided to us by forests which naturally regulate year to year changes in the atmospheric carbon dioxide concentrations. After observing and conducting model calculations on the impacts that normal climate anomalies have, scientists have found that there is less carbon uptake coming from tropical forests in warmer temperatures. Because of this, NASA and CSIRO have been working together, collecting data that exist on atmospheric carbon dioxide concentrations globally and also running multiple biospheric models to help understand the long-term response that areas such as the tropical forests will have. They determined that the earth recovers from short-term high temperature events fairly easily. However, the question is then what happens with a sustained warming from anthropogenic emissions. The answer there is that there will probably be a big decline of the capacity of tropical forests to remove and store atmospheric carbon dioxide.


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