Land | 4 | |
Land Mammals | 2 | |
Insects | 1 | |
Weather | 1 |
Permafrost Change | 4 | |
Erosion | 3 | |
Pathogen | 3 | |
Death / Die-off / Decline | 2 | |
Unusual Size / Abundance | 1 | |
Deformity / Disease / Injury | 1 | |
Extreme Temperature | 1 | |
Rain on Snow | 1 |
5 | 2 | 1 | 1 |
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1 | 1 | 1 | 1 | 2 | 1 | 2 |
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FALL | 4 | |
WINTER | 3 | |
SPRING | 1 | |
SUMMER | 1 |
United States | 5 | |
Canada | 1 |