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Richard P. Thiel

Publications and source records attributed to Richard P. Thiel.

3 recordsLinked to original sources

An unparalleled opportunity for an important ecological study

Wolves ( Canis lupus ) and moose ( Alces americanus ) have been studied since 1958 on 540-square-kilometer Isle Royale National Park, in Lake Superior. Wolves arrived there across the ice around 1949, and the population once increased to about 50, averaging about 25 annually (Mech 1966 , Jordan et al. 1967 , Vucetich and Peterson 2009 ). However, for various reasons, wolf numbers there have now dwindled to 2 nonbreeders, and the US National Park Service has proposed reintroducing 20–30 wolves over 3 years (National Park Service 2016 ). This situation offers an unparalleled opportunity to promote science-based management of this unique national park. The park has long been in the public eye for its world-renowned wolf and moose populations. Visitors to this island wilderness are especially interested in the scientific studies it has yielded and in maintaining its ecosystem.

Michigan

Chewing-removal of radio collars by wolves in Wisconsin

From May 1980 through august 1981 we placed 11 machine-belt radio collars on 10 adult gray wolves ( Canis lupus ) from 4 packs in northwestern Wisconsin. This note reports the loss of 7 collars from chewing by other wolves, apparently pack-mates.

Wisconsin