A research team led by Dr. David Coltman of the University of Sheffield has discovered that hunting may permanently change the physical characteristics of the targeted species.
Dr. Coltman, of the University’s Department of Animal and Plant Sciences, is part of a team investigating effects of thirty years of trophy hunting bighorn rams at Ram Mountain in Alberta, Canada. Trophy rams are heavy, with rapidly growing horns, and are a valuable commodity.
Trophy hunting at Ram Mountain is unrestricted, being limited only by the size of the ram’s horns, and any ram reaching the minimum size can be legally shot. Eighty-five per cent of the rams shot since 1975 have been under the age of eight. This gives rams with rapidly growing horns little time to breed, as mating is generally more successful from the age of six, when rams can use their horns to fight for females.
Lorna Branton | alfa
Safeguarding sustainability through forest certification mapping
27.06.2017 | International Institute for Applied Systems Analysis (IIASA)
Dune ecosystem modelling
26.06.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....
A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...
Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision
Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...
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