Lake Superior has a new native resident. It’s been hanging around the shore for years, but until now it was regarded as an intercontinental drifter, not a homegrown local. So say Rebecca Bixby of the University of Georgia and fellow researchers Mark Edlund of the Science Museum of Minnesota and Eugene Stoermer from the University of Michigan. In the latest issue of Diatom Research, the scientists describe a new species of diatom, Hannaea superiorensis, found primarily in Lake Superior. Prior to its discovery, the new species of photosynthetic algae was combined with another group of diatoms found in cold, pristine rivers and streams around the world. This is now the only described species of the genus Hannaea that has adapted to living in a lake environment and inhabits one lake in particular.
Diatoms are microscopic, single-celled algae with cell walls composed of silica. The newly described diatom is boomerang-shaped and lives in unusual pincushion-like colonies attached to rocks in the waves along the shore of Lake Superior. Bixby likened the discovery in the well-studied inland waters “to finding a new kind of tree on a street youve walked down a hundred times.”
“When you look at it carefully under the microscope and compare it to other diatoms, it clearly is different from the other species it had previously been grouped with,” said Bixby, a postdoctoral researcher with the Institute of Ecology. “Most obvious is the length -- Hannaea superiorensis is nearly twice as long as other species in the genus Hannaea.”
Kim Carlyle | EurekAlert!
'Lipid asymmetry' plays key role in activating immune cells
20.02.2018 | Biophysical Society
New printing technique uses cells and molecules to recreate biological structures
20.02.2018 | Queen Mary University of London
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
20.02.2018 | Life Sciences
20.02.2018 | Medical Engineering
20.02.2018 | Physics and Astronomy