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Spiegel.de: TIERE : Klimaveränderung bedroht Elche - DER SPIEGEL
... erklärt der US-Wildökologe Rolf Peterson von der Michigan Technological University. "Aber jetzt sieht es ganz klar danach aus, ...
Michigan wolf hunt: Rolf Peterson, globally known wolf expert, argues...
www.mlive.com
Rolf Peterson is a research professor at Michigan Technological University. In addition to studying wolf-prey relationships at Isle Royale National Park for...
Isle Royale likely down to 1 wolf — here's why it's a big problem
eu.freep.com
(Photo: Rolf Peterson) ... on the motion-triggered trail camera of Michigan Technological University wolf researcher Rolf Peterson, and again in ...
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