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Isle Royale National Park is an island archipelago located on Lake Superior in Michigan. Park officials first observed wolves on the island in the 1940s after they crossed an ice-bridge from Canada. Ice-bridges occur when the lake water between the islands and Canada freezes over in the winter. When they are frozen, the wolves can walk to the island from Canada. On Isle Royale, these wolves are the only predators of the Bull Moose. Because this is an island system, scientists have an opportunity to study long-term population interactions with large mammals.

Figure 1. Wolf (left) and Bull Moose (right). Photo Credit: NPS Photo/Paul Brown.

Using the current class consensus model, predict three factors that would affect the Bull Moose population.

Answer :

The Isle Royale wolf population has changed since its first arrival in the late 1940s. The wolf population declined drastically in 1980 and again in 2012 due to a combination of reasons including disease, climate change, chance, and genetic diversity loss.

Isle Royale National Park is an American national park in Michigan that encompasses Isle Royale, originally known as Minong to the original Ojibwe, as well as approximately 400 additional neighbouring islands and Lake Superior's surrounding seas.

Isle Royale is 45 miles (72 kilometres) long and 9 miles (14 kilometres) wide, making it the world's fourth-largest lake island at 206.73 square miles (535.4 square kilometres). It is also the largest natural island in Lake Superior, the second-largest in the Great Lakes (after Manitoulin Island), the third-largest in the contiguous United States (after Long Island and Padre Island), and the world's 33rd largest island.

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Final answer:

Three factors that would affect the Bull Moose population in Isle Royale National Park are availability of food, predator-prey relationship with wolves, and environmental conditions.

Explanation:

Three factors that would affect the Bull Moose population in Isle Royale National Park are:

  1. Availability of food: The food supply, such as vegetation, is a crucial factor for the Bull Moose population. Changes in the availability and quality of food can have a significant impact on their population size.
  2. Predator-prey relationship: The presence and activity of wolves on the island directly affect the Bull Moose population. The interaction between the wolves and moose can lead to fluctuations in the moose population.
  3. Environmental conditions: Factors like climate, temperature, and habitat quality can influence the survival and reproduction of the Bull Moose. Any changes in these environmental conditions can have ripple effects on the moose population.