Published in the September issue of the journal Ecological Applications, the analysis examines the interactions among changing weather conditions, forest management, and streamflow using long-term data from paired watershed studies at Coweeta, a 5,600-acre research facility and Forest Service Experimental Forest.
“Long-term data from experimental forests are truly the foundation of Forest Service research,” says SRS Research Ecologist and lead author Chelcy Ford. “For this study we took one of the longest continuous records of climate and hydrology and coupled it with data from the long-term forest management experiments on the paired watersheds to look at both precipitation patterns and the feasibility of using forest management to sustain water supply.”
The data analysis revealed that precipitation patterns are changing and becoming more extreme, in line with what climate models predict for the area. “We found significant increases in temperature and in the frequency of extreme wet and dry years since the 1980s,” says Ford. “These findings tied with those on management and streamflow have implications for managers in any area where changes in precipitation patterns could occur.”
Management approaches used in Coweeta watershed studies include conventional thinning strategies as well as more intensive approaches such as converting hardwood stands to pines. Partly because pines keep their needles year-round, conversion from hardwoods to pines decreases streamflow. For this study, Coweeta researchers asked whether vegetation on managed watersheds responded differently to extreme dry and wet years than vegetation on unmanaged watersheds.
“The answer in almost all cases was yes,” says Ford. “But from a streamflow perspective, the extreme case of converting hardwood forest to pine produced the largest effect on available surface water. Though it might be a good option for mitigating climate change under future scenarios of increased precipitation, species conversion from hardwood forest to pine would be a poor choice under drier scenarios where it could worsen water shortages by reducing the amount of available water in streams.”
Land managers and policy makers are looking to forests for options to offset the effects of climate change, and to forest management as a way to create ecosystems more resilient to the weather effects of a changing climate, but Ford and her fellow authors advise managers to look closely at the risks and vulnerabilities involved in managing for climate change, especially in relation to water supply.
“Managers need to carefully weigh the risks of adopting one strategy over another,” says Ford. “They also need to realize that any strategies they consider will have to address these risks at the regional or even more fine-scaled level, taking into account possible changes to local precipitation patterns.”
For more information: Chelcy Ford at (828) 524-2128, x 118 or firstname.lastname@example.org
Full text of the article: http://www.srs.fs.usda.gov/pubs/38726
Species may appear deceptively resilient to climate change
24.11.2017 | University of California - Davis
Scientists team up on study to save endangered African penguins
16.11.2017 | Florida Atlantic University
High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons
The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...
Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...
The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.
Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
24.11.2017 | Physics and Astronomy
24.11.2017 | Health and Medicine
24.11.2017 | Earth Sciences