Past, Present and Future Impacts of Climate Change on High Arctic C...

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Past, Present and Future Impacts of
Climate Change on High Arctic
Canadian Caribou Populations
Amy Harff
Changing Arctic E...

1
Background:
Climate change is impacting species all
around the world, and as the Arctic warms at
nearly twice the global...

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Figure 1: Peary caribou subpopulations (COSEWIC,
2015)
temperatures make this area more accessible
and hospitable, it is...

3
Union caribou populations
were estimated to be around
30,000 in 1997, declining to
about 18,000 in 2015, with
only about...

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Union caribou populations, in the past, present
and in future predictions. While Rangifer
tarandus population fluctuatio...

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Figure 3: Biomass in relation to forage inaccessibility
and subsequent caribou mortality (Tews et al., 2007)
As climate ...

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that winter is much longer than summer in the
Arctic, the decreased temperature in the
summer is shadowed by the increas...

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(Mallory and Boyce, 2017). Northern
Indigenous caribou hunters have also
witnessed the increased fire frequency within
t...

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Arctic, it is likely that the other climate
change impacts on caribou populations will
only increase.
Temperature Increa...

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Parasites:
The predominant pests that harass Peary
caribou are warble flies (Hypoderma tarandi)
and nose botflies (Cephe...

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hilltops, snow patches and other unproductive
areas (Mallory and Boyce, 2017).
In order to compensate for lost foraging...

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time consuming (Ford et al., 2007). Many
Igloolik travel over 150km to access caribou,
and their snowmobiles are vulner...

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Climate models suggest that extreme weather
events and other unfavorable conditions will
be more common in the future (...

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References
Albon, S. D., Irvine, R. J., Halvorsen, O., Langvatn, R., Loe, L. E., Ropstad, E., et al. (2016). Contrastin...

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Ferguson, M. A. D., Williamson, R. G., & Messier, F. (1998). Inuit knowledge of long-term changes in a
population of ar...

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the canadian arctic archipelago, nunavut. Department of Environment GoN, Ed.Pond Inlet,
Nunavut,
Kaluskar, S., Blukacz-...

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Loranty, M. M., Abbott, B. W., Blok, D., Douglas, T. A., Epstein, H. E., Forbes, B. C., et al. (2018).
Reviews and synt...

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Nellemann, C. (1997). Range ecology of the arctic ungulates during winter and spring: Relations to
terrain structure an...

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Tompkins, D. M., Dunn, A. M., Smith, M. J., & Telfer, S. (2011). Wildlife diseases: From individuals to
ecosystems. Jou...

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