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Answer :
The moose population on Isle Royale is influenced by biotic factors such as predation, disease, and competition, and abiotic factors including environmental changes and natural disasters. Demographic tools like life tables offer insights into population dynamics, while the logistic model underscores the role of environmental carrying capacity in population regulation.
The moose population of Isle Royale has been subject to fluctuations over 50 years due to various biotic and abiotic factors. Biotic factors include natural changes such as predation, disease, and competition for resources within the moose population and with other species. Particularly, the presence of predators like wolves can greatly impact the moose population through predation pressure. Abiotic factors involve seasonal and yearly changes in the environment, such as temperature and food availability, as well as natural disasters like forest fires which can dramatically alter habitat and food resources. These environmental factors can have both immediate and long-term effects on moose survival and reproduction, thus influencing population dynamics.
Population dynamics in moose are also affected by demographic factors and population regulation mechanisms. The use of demographic tools such as life tables helps to understand life expectancy and survival rates within the population. Furthermore, the logistic model, while simplistic, does highlight how the carrying capacity of the environment affects population growth, and illustrates that natural populations undergo boom-and-bust cycles related to environmental carrying capacity.
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