At the end of the Pleistocene (10,000 years ago), the increase in temperatures brought an end to the alpine marmot (Marmota marmota) in the Pyrenees, but between 1950 and 1988, the French government introduced around 400 specimens into the Pyrenees. The first appearances in Spain date back to 1962-1964 in the valley of Otal (Huesca).
"As an herbivore that lives in colonies, its impact on the flora of the alpine and subalpine fields can be significant. In addition, it can be a key competitor for other herbivores that it coexists with, like the ptarmigan", Bernat Claramunt, main author and researcher in CREAF and in UAB, explains to SINC adding that the impact on the ptarmigan is "very low".But to determine the magnitude of the direct or indirect effects of the presence of the alpine marmot on the alpine community, the team of scientists from CREAF-UAB, together with the association for environmental studies LUTRA, has ascertained the potential extent of the expansion of this species.
The alpine marmot is the largest rodent mammal in Europe. According to some estimates made in 2000, the population is more than 10,000 specimens. Other studies carried out in CREAF-UAB also suggest that "the presence of the alpine marmot favours the biodiversity of the Pyrenees", the researcher highlights.
The benefits of the marmot
By again becoming an abundant species which is of a medium size, the predators of the Pyrenees have found "prey that is easy to capture". Studies on the remains of golden eagles' (Aquila chrysaetos) nests indicate that this bird eats marmot frequently. The scientists have observed that foxes also capture them.
"Very probably, the adaptive flexibility of marmots, the best climatic conditions on the southern slope of the range, and the lower density of significant predators, explain the rapid expansion of the species", Claramunt points out.
López, B.C.; Figueroa, I.; Pino, J.; López, A.; Potrony, D. "Potential distribution of the alpine marmot in Southern Pyrenees" Ethology Ecology and Evolution 21(3-4): 225-235, diciembre de 2009.
SINC | EurekAlert!
Waste in the water – New purification techniques for healthier aquatic ecosystems
24.07.2018 | Eberhard Karls Universität Tübingen
Plenty of habitat for bears in Europe
24.07.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
17.08.2018 | Physics and Astronomy
17.08.2018 | Information Technology
17.08.2018 | Life Sciences