Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Beargrass, a plant of many roles, is focus of new report

20.11.2012
Report finds that disturbances are shifting within beargrass habitat

Beargrass is an ecologically, culturally, and economically important plant in the Western United States and, for the first time, landowners, managers, and harvesters now have a comprehensive report about the species.

The report, Natural and Cultural History of Beargrass (Xerophyllum tenax), published by the U.S. Forest Service's Pacific Northwest Research Station, identifies critical knowledge gaps and areas for future research. It also documents how changes in disturbance, including fire, may affect the species across its range.

"Beargrass is emblematic of a web of natural and cultural diversity in the West," said Susan Stevens Hummel, a research forester at the station and lead author of the report. "This means that organisms and processes—like people, plants, and pollinators—are interrelated."

Beargrass is a member of the lily family that, when in bloom, produces a single stalk capped with clusters of white flowers. It grows in a wide variety of habitat types and conditions, but in just two geographic areas—from the mountains of northwestern Washington south into west-central California, and from Canada south into Wyoming along the Rocky Mountains.

The plant provides food, habitat, and raw material for an array of wildlife species—from bees and flies, to rodents, bears, deer, and elk. Beargrass has longstanding cultural value and is harvested by Native Americans for use in basketry and regalia, and for medicinal and decorative purposes. It also is coveted by the commercial floral greens industry, which generates more than $200 million a year in the Pacific Northwest.

Hummel, together with her coauthors at the Xerces Society and the station, found that historical and contemporary land use practices in beargrass habitat, combined with the rise of the commercial floral greens industry, are creating shifts in disturbances within beargrass habitat.

"We found that beargrass is experiencing decreased disturbance from natural and human-caused fire, but increased disturbance from leaf harvest by the floral industry," Hummel said. "Our report looks at each of these different disturbance types and their potential effects on beargrass, its pollinators, and on human gatherers."

Among the report's findings:

- Disturbance effects on pollinators and on beargrass reproduction and abundance are not well understood;

- Traditional and commercial harvesters seek different leaf properties and use different methods to harvest beargrass;

- No coordinated effort exists among landowners to monitor the volume of beargrass being harvested each year.

"This report clarifies for land managers the importance of beargrass and offers researchers a list of knowledge gaps about the plant," Hummel said. "By addressing some of the key issues identified in the report, forest management practices can be developed to help sustain the ecological web of which beargrass is a part."

Natural and Cultural History of Beargrass is available online at http://www.treesearch.fs.fed.us/pubs/42172 and in print by request. Printed copies of the report can be requested by emailing pnw_pnwpubs@fs.fed.us or calling (503) 261-1211 and referencing "PNW-GTR-864."

The Pacific Northwest Research Station is headquartered in Portland, Oregon. It has 11 laboratories and centers located in Alaska, Oregon, and Washington and about 400 employees.

Yasmeen Sands | EurekAlert!
Further information:
http://www.fs.fed.us

More articles from Ecology, The Environment and Conservation:

nachricht Upcycling of PET Bottles: New Ideas for Resource Cycles in Germany
25.06.2018 | Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF

nachricht Dry landscapes can increase disease transmission
20.06.2018 | Forschungsverbund Berlin e.V.

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: Future electronic components to be printed like newspapers

A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.

The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

The Maturation Pattern of the Hippocampus Drives Human Memory Deve

23.07.2018 | Science Education

FAU researchers identify Parkinson's disease as a possible autoimmune disease

23.07.2018 | Health and Medicine

O2 stable hydrogenases for applications

23.07.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>