The resilience of sockeye salmon runs in Alaska’s Bristol Bay -– after a century of fishing theyre as healthy as theyve ever been – is about strength in numbers.
Its not just an abundance of fish, although the numbers returning to spawn is tens of millions more than the total across the lower 48 states and prudent actions by fishermen and the Alaska Department of Fish and Game have helped make it a classic example of a sustainable fishery.
As it turns out, its also about having a large number of population segments, or components, the fish in each programmed to breed and thrive under conditions somewhat different from the fish in other components, University of Washington researchers report in this weeks Proceedings of the National Academy of Sciences.
Sandra Hines | EurekAlert!
Fungicides as an underestimated hazard for freshwater organisms
17.09.2019 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
Study: We need more realistic experiments on the impact of climate change on ecosystems
16.09.2019 | Martin-Luther-Universität Halle-Wittenberg
Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Hamburg and the European Molecular Biology Laboratory (EMBL) outstation in the city have developed a new method to watch biomolecules at work. This method dramatically simplifies starting enzymatic reactions by mixing a cocktail of small amounts of liquids with protein crystals. Determination of the protein structures at different times after mixing can be assembled into a time-lapse sequence that shows the molecular foundations of biology.
The functions of biomolecules are determined by their motions and structural changes. Yet it is a formidable challenge to understand these dynamic motions.
At the International Symposium on Automotive Lighting 2019 (ISAL) in Darmstadt from September 23 to 25, 2019, the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, a provider of research and development services in the field of organic electronics, will present OLED light strips of any length with additional functionalities for the first time at booth no. 37.
Almost everyone is familiar with light strips for interior design. LED strips are available by the metre in DIY stores around the corner and are just as often...
Later during this century, around 2060, a paradigm shift in global energy consumption is expected: we will spend more energy for cooling than for heating....
Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Potsdam (both in Germany) and the University of Toronto (Canada) have pieced together a detailed time-lapse movie revealing all the major steps during the catalytic cycle of an enzyme. Surprisingly, the communication between the protein units is accomplished via a water-network akin to a string telephone. This communication is aligned with a ‘breathing’ motion, that is the expansion and contraction of the protein.
This time-lapse sequence of structures reveals dynamic motions as a fundamental element in the molecular foundations of biology.
Two research teams have succeeded simultaneously in measuring the long-sought Thorium nuclear transition, which enables extremely precise nuclear clocks. TU Wien (Vienna) is part of both teams.
If you want to build the most accurate clock in the world, you need something that "ticks" very fast and extremely precise. In an atomic clock, electrons are...
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18.09.2019 | Materials Sciences