Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Solar panels can attract breeding water insects

28.05.2010
...but scientists propose a simple fix

Solar power might be nature's most plentiful and benign source of energy, but shiny black solar cells can lure water insects away from critical breeding areas, a Michigan State University scientist and colleagues warn.

Applying white grids or other methods to break up the polarized reflection of light, however, makes mayflies and other aquatic insects far less likely to deposit eggs on the panels thinking that they are water, the group discovered.

"This research demonstrates that solar panels are a strong new source of polarized light pollution that creates ecological traps for many types of insect," says Bruce Robertson, a research associate at MSU's Kellogg Biological Station in Hickory Corners. "This is of significant conservation importance given the radical expansion in solar energy development and the strong negative impacts of ecological traps on animal populations."

Using nonpolarizing white grids, he adds, demonstrates a novel approach to reducing the attractiveness of a false habitat by applying what biologists call habitat fragmentation. That is an effect that usually is harmful to species, but in this case promises to solve a conservation problem.

Robertson's team estimates that adding white markings to solar cells might reduce their ability to collect solar energy by perhaps 1.8 percent, depending on the amount of space the strips cover.

Conventional solar cells share a problem with glass-clad buildings and other expanses of shiny dark surfaces – even vehicles. Reflected sunlight becomes polarized, or aligned in a single, often horizontal plane, which is how at least 300 species of insect recognize the surface of water bodies to lay their eggs.

When species such as mayflies and caddis flies mistake shiny dark surfaces for water, they set themselves up for reproductive failure and often become easy targets for predators, Robertson and colleagues noted in a recent online article in the journal Conservation Biology. Local population collapse could be a result, with cascading impacts on predators and other species up the food chain.

Humans typically recognize reflected sunlight as glare, which polarized sunglasses overcome by filtering the horizontal waves through vertically polarized lenses.

Robertson conducted his research in Hungary with scientists associated with Eotvos University in Budapest and Szent Istvan University in Godollo, Hungary. Their work was supported by the U.S. Department of Energy's Great Lakes Bioenergy Research Center and the Hungarian Science Foundation.

Michigan State University has been advancing knowledge and transforming lives through innovative teaching, research and outreach for more than 150 years. MSU is known internationally as a major public university with global reach and extraordinary impact. Its 17 degree-granting colleges attract scholars worldwide who are interested in combining education with practical problem solving.

Mark Fellows | EurekAlert!
Further information:
http://www.ur.msu.edu

More articles from Life Sciences:

nachricht Making fuel out of thick air
08.12.2017 | DOE/Argonne National Laboratory

nachricht ‘Spying’ on the hidden geometry of complex networks through machine intelligence
08.12.2017 | Technische Universität Dresden

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

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,...

Im Focus: Towards data storage at the single molecule level

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...

Im Focus: Successful Mechanical Testing of Nanowires

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...

Im Focus: Virtual Reality for Bacteria

An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications

Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...

Im Focus: A space-time sensor for light-matter interactions

Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.

The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

Midwife and signpost for photons

11.12.2017 | Physics and Astronomy

How do megacities impact coastal seas? Searching for evidence in Chinese marginal seas

11.12.2017 | Earth Sciences

PhoxTroT: Optical Interconnect Technologies Revolutionized Data Centers and HPC Systems

11.12.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>