Many of the world’s approximately 117 million lakes act as wet chimneys releasing large amounts of the greenhouse gas carbon dioxide into the atmosphere. The most recent estimates show that CO2 emissions from the world’s lakes, water courses and reservoirs are equivalent to almost a quarter of all the carbon dioxide produced by burning fossil fuels.
By meticulously examining sediments in China’s Yellow River, a Swedish–Chinese research group are showing that the history of tectonic and climate evolution on Earth may need to be rewritten. Their findings are published today in the highly reputed journal Nature Communications.
For the first time a high-resolution map over the ground below the Greenland ice sheet is available. Researchers at Uppsala University have developed the map that will be of great importance for future possibilities to predict how the Greenland ice sheet melts and moves and that in turn has an impact on rising sea levels as a result of climate change.
A key question in the climate debate is how the occurrence and distribution of species is affected by climate change. But without information about natural variation in species abundance it is hard to answer. In a major study, published today in the leading scientific journal Current Biology, researchers can now for the first time give us a detailed picture of natural variation.
Climate researcher Doreen Stabinsky will be Uppsala University’s first holder of the Zennström Visiting Professorship in Climate Change Leadership. She is to take up the position on February 1st and contribute to the establishment of an environment that will be unique, both in Sweden and internationally.
By providing the infrastructure that connects global flows and financial systems, major cities have increased their political power alongside the nation-states. In some cases, they are pursuing their own foreign policy in several areas. In her PhD thesis Kristin Ljungkvist, at Uppsala University, has studied the effects of this development and argues that certain risks should be heeded.
It’s not only the biology of lakes that varies with the climate and other environmental factors, it’s also their chemistry. More knowledge about this is needed to understand the ecology of lakes and their role in the carbon cycle and the climate. A comprehensive study, led from Uppsala Univeristy, Sweden, is today published in the prestigious journal Nature Communications.