Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Microbes active in Colorado snows fuel tundra ecosystem

05.09.2003


Populations of fungi blanketed by Colorado’s snows are more active and diverse than previously thought, and are likely responsible for the productivity of the tundra ecosystem they are a part of, according to findings by scientists funded through the National Science Foundation (NSF)’s Long-Term Ecological Research (LTER) and Microbial Observatories programs. The researchers have published their results in this week’s issue of the journal Science.


"Microbial-level investigations are integral to developing an overall understanding of the alpine ecology at Niwot Ridge LTER site in the Colorado front range."
Photo by Timothy Seastedt, Niwot LTER



Christopher Schadt, now of the Department of Energy’s Oak Ridge National Laboratory in Tennessee and a former graduate student at the University of Colorado at Boulder, said "the discovery should help scientists gain greater insight into decomposition rates, carbon cycles and the roles of individual fungi in those processes." Surprisingly, the number of active microorganisms in tundra soils, for at least the top 10 centimeters, (about four inches) peaks when the soils are covered with snow. Schadt and colleagues performed their research at the Niwot Ridge, Colo., LTER site. Niwot Ridge is located some 12,000 feet atop the Rocky Mountains.

"The finding that microorganisms are interacting with tundra soils to a great extent highlights the important role of the snowpack in creating a unique and crucial environment in tundra ecosystems in Colorado and likely in other locations that are covered with snow for long periods of time in winter," said Henry Gholz, LTER program director at NSF.


Metabolism of snow-covered microbes is an important biogeochemical "sink," or way of storing, nitrogen. "The subsequent release in spring of nitrogen from the microbes’ metabolism is a major contributor to the relatively high productivity during the short growing season in the tundra," said Steven Schmidt of the University of Colorado at Boulder, a co-author of the Science paper, and leader of the research team.

Schadt, Schmidt, and colleagues Andrew Martin of the University of Colorado and David Lipson of San Diego State University also found that fungi account for most of the biomass of the tundra, which undergoes significant seasonal changes. The researchers discovered that about 40 percent of the fungi in their samples were previously unknown. DNA sequencing enabled them to identify fungi that may hold answers to other questions about the tundra ecology in Colorado and in other locations around the world.

Cheryl Dybas | NSF
Further information:
http://www.nsf.gov

More articles from Ecology, The Environment and Conservation:

nachricht Upcycling 'fast fashion' to reduce waste and pollution
03.04.2017 | American Chemical Society

nachricht Litter is present throughout the world’s oceans: 1,220 species affected
27.03.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

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: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>