Death / Die-off / Decline | 4 | |
Permafrost Change | 4 | |
Seasonal Timing | 4 | |
Extreme Temperature | 3 | |
Rain on Snow | 1 | |
Ice / Snow Change | 1 | |
Thunderstorm | 1 | |
Pathogen | 1 |
1 | 4 | 3 | 6 | 6 | 3 | 3 | 2 | 2 | 2 | 1 |
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SPRING | 15 | |
FALL | 6 | |
SUMMER | 6 | |
WINTER | 6 |
United States | 15 | |
Canada | 5 | |
Russia | 2 |