There are more Polar Bears today than yesterday

We show that much of the scientific evidence indicating that some polar bear subpopulations are declining due to climate change-mediated sea ice reductions is likely flawed by poor mark–recapture (M-R) sampling and that the complex analysis models employed to overcome these capture issues apparently fail to provide accurate estimates of the demographic parameters used to determine subpopulation status.

Our perspectives on climate warming and Arctic sea ice decline are developed from an empirical examination of the open-source data on various indicators of these phenomena. We see reason for concern, but find no reliable evidence to support the contention that polar bears are currently experiencing a climate crisis. We suggest that the qualitative projections for dramatic reductions in population numbers and range are overly pessimistic given the response of polar bears, climate, and sea ice to the present.

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http://onlinelibrary.wiley.com/doi/10.1002/ece3.2030/full