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Primeur weekly 2014-03-24

Special

Crowd computing takes a closer look at the social life of molecules ...

Exascale supercomputing

Dongarra calls for renewed focus on research into high-end math ...

The Cloud

HP expands testing for mobile and Cloud-based application delivery ...

Kamal Osman Jamjoom Group LLC transforms performance management system with Oracle HCM Cloud ...

EuroFlash

HPC performance insight improves usage at Cardiff University ...

Early-Bird registration opens for International Supercomputing Conference ...

Europe's most powerful supercomputer cleared for users ...

Bright Computing expands product line to manage HPC, OpenStack, and Apache Hadoop clusters ...

World-renowned computational biophysicist, Klaus Schulten to deliver ISC'14 keynote ...

Innovative computer under scrutiny ...

Plans for world class research centre in the United Kingdom ...

2nd International Workshop on OpenCL full technical programme is now available ...

Excelian offers a fully managed compute Grid solution with pay-as-you-go infrastructure costs ...

Prêt-à-fabriquer: Real-time simulation of textiles ...

Follow the ant trail for drug design ...

CFAED presents the new microchip 'Tomahawk 2' at the DATE'14 in Dresden ...

USFlash

Cray to install China's first Cray XC30 supercomputer at Hong Kong Sanatorium and Hospital ...

Dot Hill storage products drill down to support oil & gas applications ...

The New York Genome Center and IBM Watson Group announce collaboration to advance genomic medicine ...

SDSC's Gordon supercomputer assists in whole-genome sequencing analysis under collaboration with Janssen ...

HP delivers powerful system with faster analytics engine for SAP HANA environments ...

Southern Methodist University announces name for new supercomputer: ManeFrame ...

Oregon physicists use geometry to understand 'jamming' process ...

NIST chips help BICEP2 telescope find direct evidence of origin of the universe ...

University of Idaho researchers gain new advantage with one of the nation's most powerful computers ...

Study finds forest corridors help plants disperse their seeds ...

Computer analyzes massive clinical databases to properly categorize asthma patients ...

Start-up focuses on reliable, efficient cooling for computer servers ...

Study finds forest corridors help plants disperse their seeds


Damschen/University of Wisconsin-Madison
19 Mar 2014 Columbus - A forest in South Carolina, a supercomputer in Ohio and some glow-in-the-dark yarn have helped a team of field ecologists conclude that woodland corridors connecting patches of endangered plants not only increase dispersal of seeds from one patch to another, but also create wind conditions that can spread the seeds for much longer distances. The idea for the study emerged from modern animal conservation practices, where landscape connectivity - the degree to which landscapes facilitate movement - is being used to counteract the impacts of habitat loss and fragmentation on animal movement.

Gil Bohrer, Ph.D., an assistant professor in the Civil, Environmental & Geodetic Engineering department at the Ohio State University, and colleagues led by Ellen Damschen, Ph.D., an assistant professor of Zoology at the University of Wisconsin, wondered if similar interventions might aid plants that rely upon wind currents. The study, "How fragmentation and corridors affect wind dynamics and seed dispersal in open habitats", was published in the March 4 issue ofProceedings of the National Academy of Sciencesof the United States of America and referenced in the February 27 issue ofNature.

The field experiment involved connecting open patches of land by cutting gaps and corridors out of a longleaf pine plantation around the Savannah-River National Laboratory near Jackson, South Carolina. A network of sensors was erected to provide observations on wind speed, turbulence, temperature and humidity at roughly 20 points throughout the experimental landscape. Seed traps sampled seed arrival at many points in and around the gaps and hundreds of artificial seeds made of black-light fluorescent yarn were released and recovered in several controlled experiments.

These very large experimental efforts provided a novel dataset of observations of seed movement and wind in patch-corridors landscapes. However, the researchers understood that reality is always much more detailed than can be observed. Therefore, to comprehend the fine details of the relationships between the forest gap structures and the wind, the scientists leveraged the physical model to generate a virtual and complete environment, where every detail of the wind and seeds movement and the forest structure are known.

Gil Bohrer ran the dataset through a high-resolution atmospheric model that he had developed on Ohio Supercomputer Center's IBM Opteron 1350 Glenn Cluster. The Glenn Cluster provides users with a total peak performance of 54 teraflops - tech-speak for making 54 trillion calculations per second, and the centre's Mass Storage System provides more than 2 petabytes of storage.

"The massive simulations used the Ohio Supercomputer Center to provide a detailed understanding of how corridors change the movement of the wind, and seeds that disperse with it, through a forest", Gil Bohrer stated.

The model resolves the wind flow and includes the effects of canopy leaves and tree stems on the wind. The simulations include a virtual domain of roughly 6.5 million pixels, each representing a volume of air - or air mixed with forest leaves - of about 10 cubic meters. It also represented millions of dispersing virtual seeds. The model calculated the movement of the air and virtual seeds 20 times per second, over four hours.

"We found that corridors could affect the wind direction and align the wind flow with the corridor, that they accelerate the wind and provide preferable conditions for ejection above the canopy, where long distance dispersal could occur", stated Gil Bohrer.

Funding for the project was provided by the National Science Foundation, the Center for Programmes and the International Center for Advanced Renewable Energy and Sustainability at Washington University, the USDA Forest Service-Savannah River under interagency agreement with the Department of Energy, and the USDA National Institute for Food and Agriculture Air Quality.
Source: Ohio Supercomputer Center

Back to Table of contents

Primeur weekly 2014-03-24

Special

Crowd computing takes a closer look at the social life of molecules ...

Exascale supercomputing

Dongarra calls for renewed focus on research into high-end math ...

The Cloud

HP expands testing for mobile and Cloud-based application delivery ...

Kamal Osman Jamjoom Group LLC transforms performance management system with Oracle HCM Cloud ...

EuroFlash

HPC performance insight improves usage at Cardiff University ...

Early-Bird registration opens for International Supercomputing Conference ...

Europe's most powerful supercomputer cleared for users ...

Bright Computing expands product line to manage HPC, OpenStack, and Apache Hadoop clusters ...

World-renowned computational biophysicist, Klaus Schulten to deliver ISC'14 keynote ...

Innovative computer under scrutiny ...

Plans for world class research centre in the United Kingdom ...

2nd International Workshop on OpenCL full technical programme is now available ...

Excelian offers a fully managed compute Grid solution with pay-as-you-go infrastructure costs ...

Prêt-à-fabriquer: Real-time simulation of textiles ...

Follow the ant trail for drug design ...

CFAED presents the new microchip 'Tomahawk 2' at the DATE'14 in Dresden ...

USFlash

Cray to install China's first Cray XC30 supercomputer at Hong Kong Sanatorium and Hospital ...

Dot Hill storage products drill down to support oil & gas applications ...

The New York Genome Center and IBM Watson Group announce collaboration to advance genomic medicine ...

SDSC's Gordon supercomputer assists in whole-genome sequencing analysis under collaboration with Janssen ...

HP delivers powerful system with faster analytics engine for SAP HANA environments ...

Southern Methodist University announces name for new supercomputer: ManeFrame ...

Oregon physicists use geometry to understand 'jamming' process ...

NIST chips help BICEP2 telescope find direct evidence of origin of the universe ...

University of Idaho researchers gain new advantage with one of the nation's most powerful computers ...

Study finds forest corridors help plants disperse their seeds ...

Computer analyzes massive clinical databases to properly categorize asthma patients ...

Start-up focuses on reliable, efficient cooling for computer servers ...