The worlds tropical rain forests are under increasing threats from clearing for agriculture, massive slaughter of wildlife, global climate change and the reduction of forests to ever-smaller fragments.
Studying the effects of these changes on the keystone structural elements of these forests, canopy trees, has up to now been difficult, expensive and in some cases even dangerous. Now a tri-national group of researchers lead by Dr. David B. Clark of the University of Missouri-St. Louis has shown that new high-resolution satellite data can be used to obtain vital data on these rain forest giants.
Writing in the January issue of Ecology Letters, Clark and his colleagues show that images from the newest generation of commercial satellites are of high enough resolution to allow identification of individual canopy trees and detection of individual tree deaths. The ability to locate and follow individual canopy trees from space, they suggest, will usher in a new age of global monitoring of the ecological health of tropical forests world-wide.
Kate Stinchcombe | EurekAlert!
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MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
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