Winter Study: Observing Wolves & Moose on Isle Royale
February 18, 2013
A couple of weeks ago a reader sent me a link isleroyalewolf.org. The website documents the interactions of the island’s wolf & moose population as their decades long dance unfolds on this remote, wilderness island. Their overview explains:
Isle Royale has offered many discoveries… how wolves affect populations of their prey, how population health is affected by inbreeding and genetics, what moose teeth can tell us about long-term trends in air pollution, how ravens give wolves a reason to live in packs, why wolves don’t always eat all the food that they kill, and more. The wolves and moose of Isle Royale also frequently reveal intimate details of their daily life experiences and they have inspired numerous artistic expressions. If we pay attention, they all tell us something important about our relationship with nature. These insights and discoveries are all presented here for you.
Building on the graph above and to develop a deeper understanding, here is more on the history of wolves and moose on Isle Royale. Moose first came to Isle Royale in the early 20th century, and for fifty years, their numbers fluctuated with weather conditions and food abundance. Wolves first arrived in the late 1940s by crossing an ice bridge from Canada. The lives of Isle Royale moose would never be the same.
Every winter since 1958, a team of researchers has spent numerous weeks at Isle Royale observing the lives of these wolves and moose and reporting back. Now they offer a website with photos and detailed reports, a fascinating tale that I encourage you to follow. Today’s photo is from the edition I began with - It’s Complicated. A snapshot:
Isabelle’s signal was surprisingly close. By the time we saw her, she was running for her life, north along the beach of Rainbow Cove. She was being chased by Pip’s two companions. Pip was nowhere in sight. While those two wolves have been eating regularly, Isabelle may not have had a decent meal in weeks, perhaps longer. Isabelle’s half-mile lead was reduced to nothing in just a few minutes.
More wolves on Michigan in Pictures.