Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New Notre Dame study examines density stratification on microorganisms in aquatic ecosystems

07.03.2012
Microorganisms play pivotal functions in nature, particularly within aquatic ecosystems. Whether in an ocean or a lake, they are key players in the food chain and the vitality of individual ecosystems.
A team of researchers led by Arezoo M. Ardekani, the Rev. John Cardinal O'Hara, C.S.C., Assistant Professor of Aerospace and Mechanical Engineering at the University of Notre Dame, has shown that density stratification, a frequent feature of aquatic environments, has important ecological consequences on these small organisms.

The team recently published a paper in the Proceedings of the National Academy of Sciences that demonstrates that density variations encountered by organisms at pycnoclines have a major effect on the flow field, energy expenditure and nutrient uptake of small organisms. Organisms at pycnoclines, regions of sharp vertical variation in fluid density, afford a competitive advantage due to smaller risk of predation. These results can be used to explain why an accumulation of organisms and particles, which leads to a wide range of environmental and oceanographic processes, is associated with pycnoclines .

Ardekani joined the University in 2011. Her research interests focus on the fundamental properties of multiphase flows of Newtonian and non-Newtonian fluids relevant to biofluids, and micro/nanofluids for use in biomimetic applications, biomedical devices, alternative energy technologies, and environmental remediation.

Most recently, she was awarded a 2012 National Science Foundation Faculty Early Career Development Award for her work in fluid dynamics of bacterial aggregation and formation of biofilm streamers. Prior to joining the University, Ardekani served as a Shapiro Postdoctoral Fellow at the Massachusetts Institute of Technology and is currently a member of the American Association for the Advancement of Science, American Chemical Society, American Physical Society, American Society of Mechanical Engineers and Society of Rheology.

She received her doctorate (2009) and master's (2005) in mechanical and aerospace engineering from the University of California at Irvine and her bachelor's in mechanical engineering from the Sharif University of Technology in Iran (2003).

Arezoo M. Ardekani | EurekAlert!
Further information:
http://www.nd.edu

More articles from Ecology, The Environment and Conservation:

nachricht Treatment of saline wastewater during algae utilization
14.05.2019 | Jacobs University Bremen gGmbH

nachricht Plastic gets a do-over: Breakthrough discovery recycles plastic from the inside out
07.05.2019 | DOE/Lawrence Berkeley National Laboratory

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

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

Im Focus: The geometry of an electron determined for the first time

Physicists at the University of Basel are able to show for the first time how a single electron looks in an artificial atom. A newly developed method enables them to show the probability of an electron being present in a space. This allows improved control of electron spins, which could serve as the smallest information unit in a future quantum computer. The experiments were published in Physical Review Letters and the related theory in Physical Review B.

The spin of an electron is a promising candidate for use as the smallest information unit (qubit) of a quantum computer. Controlling and switching this spin or...

Im Focus: Self-repairing batteries

UTokyo engineers develop a way to create high-capacity long-life batteries

Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...

Im Focus: Quantum Cloud Computing with Self-Check

With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.

Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...

Im Focus: Accelerating quantum technologies with materials processing at the atomic scale

'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.

However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...

Im Focus: A step towards probabilistic computing

Working group led by physicist Professor Ulrich Nowak at the University of Konstanz, in collaboration with a team of physicists from Johannes Gutenberg University Mainz, demonstrates how skyrmions can be used for the computer concepts of the future

When it comes to performing a calculation destined to arrive at an exact result, humans are hopelessly inferior to the computer. In other areas, humans are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

SEMANTiCS 2019 brings together industry leaders and data scientists in Karlsruhe

29.04.2019 | Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

 
Latest News

Plumbene, graphene's latest cousin, realized on the 'nano water cube'

23.05.2019 | Materials Sciences

New flatland material: Physicists obtain quasi-2D gold

23.05.2019 | Materials Sciences

New Boost for ToCoTronics

23.05.2019 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>