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 of Proceedings of the National Academy of Sciences of the United States of America and referenced in the February 27 issue of Nature.
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, S.C. 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
|Contact: Jamie Abel|
Ohio Supercomputer Center