Eastern floater mussels are abundant in lakes and ponds throughout the Northeastern United States. The below illustration is from The Pearly Mussels of the New York State, written by David Strayer
If you have spent time boating or fishing in freshwater, there is a good chance you have encountered a pearly mussel. Elliptical in shape, with iridescent inner shells, humans have appreciated the animals since prehistoric times. Coveted for their pearls and mother-of-pearl shells; their meat has been a resource for both humans and wildlife. In a BioScience paper published this week, a team of scientists report that something troubling has been happening in our nation’s freshwaters— once-abundant pearly mussels are disappearing from the landscape.
Written by a team of seven mussel experts, the paper concludes that, "Many pearly mussel populations have a negative growth rate and are likely to disappear unless environmental conditions change." To protect the animals, the authors urge simultaneous research and conservation actions, among them increased research on mussel biology and the protection of mussel habitat.
Though humans have been interacting with mussels for millennia, there are large gaps in our understanding of their life history and the role they play in freshwater ecosystems. Lead author Dr. David L. Strayer, a freshwater ecologist at the Institute of Ecosystem Studies, remarks, "Pearly mussels are imperiled by human activities, such as pollution, dam construction, and channelization. Dozens of species are already extinct and well over a hundred species are in danger of disappearing. For many mussel species, without intervention, future populations will be limited to specimens in museum drawers."
Lori M. Quillen | Institute of Ecosystem Studies
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The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
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In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
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