Since 1975, five high-elevation lakes in the Adirondacks have had rapid decreases in the duration of ice cover and are now frozen for 7 to 21 fewer days on average, according to a study published April 30 in the journal Climatic Change by a team of researchers at the SUNY College of Environmental Science and Forestry (ESF).
“It shows us in a detailed way that the climate is warming in the Adirondacks, that it’s warming in a way we might not expect,” said Dr. Colin Beier, a research ecologist who is the paper’s lead author.Beier said analysis of local climate and lake ice records at ESF’s Adirondack Ecological Center (AEC) in Newcomb shows the biggest change in ice cover has occurred in the fall and early winter, with ice forming on the various lakes about two days to two weeks later over the study period. The “ice-out” dates, marking the day the ice was considered melted, changed much less, probably because of the insulating value of snow cover. Three of the lakes recorded no consistent changes in the ice-out date; the biggest change observed was five days. This marks a difference from many previous studies of lake ice in the Northeast, which found more significant changes in ice cover were occurring in the spring.
All the lakes studied are within ESF’s 15,000-acre Huntington Wildlife Forest, near the geographic center of the park: Arbutus, Catlin, Deer, Rich and Wolf. The most severely affected by recent warming was Wolf Lake, classified as a “Heritage Lake” because of its pristine condition. It contains no non-native species and it has not been negatively affected by acid rain; analysis of its sediments indicates Wolf Lake is in much the same condition it was before Christopher Columbus set sail. The study showed it has lost a full three weeks of ice cover since 1975. The equivalent time for the other four lakes ranged from 7 to 17 days.
“There’s no evidence of human impact on the lake. It’s a little tiny pocket of untouched ecology,” Beier said. “But of the lakes we looked at, it shows the most change, both in the timing of the ice forming and melting, and in its shrinking duration. Conservation efforts are probably helping to protect it but conservation is not a panacea.
“Climate change is a game changer in conservation,” he said. “There are places where you’ve done everything you can to protect these ecosystems and you think they’re safe. They’re not.”
The difference in lake ice duration could affect recreational and tourism activities such as snowmobiling and ice fishing as well as impact water levels in the Hudson River, which flows from Adirondack headwaters. It could also have broad environmental effects on the life cycles of plants and animals. One of the most significant species that could be affected in the Adirondacks is the endangered native brook trout, a cold-water species that attracts recreational fishermen. Brook trout are stressed by warmer water and could face increased competition by other fish species adapted to warm water conditions.
Beier said the study shows the value of long-term data collection and proves the need for more research. “Our knowledge of climate change outpaces our knowledge of how it affects our local ecosystems,” he said. “The reality is changes are happening that we have to pay attention to if we are going to adapt to them.”
Beier’s co-authors were ESF faculty members Dr. John Stella and Dr. Martin Dovciak and Stacy McNulty, a researcher at the AEC. Data for the study were collected as part of the Adirondack Long-Term Monitoring Program at the AEC.
Claire B. Dunn | Newswise Science News
From volcano's slope, NASA instrument looks sky high and to the future
27.04.2017 | NASA/Goddard Space Flight Center
Penn researchers quantify the changes that lightning inspires in rock
27.04.2017 | University of Pennsylvania
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...
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...
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...
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...
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...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
27.04.2017 | Life Sciences
27.04.2017 | Physics and Astronomy
27.04.2017 | Earth Sciences