Climate change could dramatically increase the forest cover of the Earths mountains, ecologists are predicting. Using data from the Austrian Alps, ecologists have developed a model that predicts the area covered by the local pine, Pinus mugo Turra, will increase from 10% today to 60% by the turn of the next millennium. The findings are published in the current issue of of the British Ecological Societys Journal of Ecology and, the authors believe, this is the first paper to model tree line dynamics driven by climate change on a landscape scale in both time and space.
The Earths climate has warmed approximately 0.6°C over the past 100 years and the rate of warming looks set to accelerate. Alpine tree lines are assumed to be particularly sensitive to climate change, with high mountain forests predicted to shift their ranges up-slope at the expense of alpine vegetation.
According to one of the authors, Dr Stefan Dullinger of the University of Vienna: “Shrinkage and fragmentation of alpine habitats, as a consequence, may pose a serious threat to populations of many alpine plants, especially to regional endemics. On the other hand, expansion of mountain forests may also improve certain ecosystem services for human welfare, such as erosion control and increased water holding capacity in many high mountain water catchments.”
Becky Allen | alfa
Project provides information on energy recovery from agricultural residues in Germany and China
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New exhaust gas measurement registers ultrafine pollutant particles for the first time
21.01.2020 | Technische Universität Graz
The operational speed of semiconductors in various electronic and optoelectronic devices is limited to several gigahertz (a billion oscillations per second). This constrains the upper limit of the operational speed of computing. Now researchers from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg, Germany, and the Indian Institute of Technology in Bombay have explained how these processes can be sped up through the use of light waves and defected solid materials.
Light waves perform several hundred trillion oscillations per second. Hence, it is natural to envision employing light oscillations to drive the electronic...
Most natural and artificial surfaces are rough: metals and even glasses that appear smooth to the naked eye can look like jagged mountain ranges under the microscope. There is currently no uniform theory about the origin of this roughness despite it being observed on all scales, from the atomic to the tectonic. Scientists suspect that the rough surface is formed by irreversible plastic deformation that occurs in many processes of mechanical machining of components such as milling.
Prof. Dr. Lars Pastewka from the Simulation group at the Department of Microsystems Engineering at the University of Freiburg and his team have simulated such...
Investigation of the temperature dependence of the skyrmion Hall effect reveals further insights into possible new data storage devices
The joint research project of Johannes Gutenberg University Mainz (JGU) and the Massachusetts Institute of Technology (MIT) that had previously demonstrated...
Researchers at Chalmers University of Technology, Sweden, recently completed a 5-year research project looking at how to make fibre optic communications systems more energy efficient. Among their proposals are smart, error-correcting data chip circuits, which they refined to be 10 times less energy consumptive. The project has yielded several scientific articles, in publications including Nature Communications.
Streaming films and music, scrolling through social media, and using cloud-based storage services are everyday activities now.
After helping develop a new approach for organic synthesis -- carbon-hydrogen functionalization -- scientists at Emory University are now showing how this approach may apply to drug discovery. Nature Catalysis published their most recent work -- a streamlined process for making a three-dimensional scaffold of keen interest to the pharmaceutical industry.
"Our tools open up whole new chemical space for potential drug targets," says Huw Davies, Emory professor of organic chemistry and senior author of the paper.
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