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Polar Bear

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Appendix B—Specific Conservation and Recovery Actions Considered<br />

(Action) Evaluate specific research protocols by examining value to polar bear conservation and direct<br />

impact on bears. i.e. cost-benefit analysis.<br />

(Action) Develop safe-handling protocols for polar bears.<br />

Research Actions — The entries below were proposed by Recovery Team, Science and TEK workgroup<br />

during development of the Plan. The list consists of representative projects supporting research areas<br />

identified in Plan. Implementation of these or of other projects will flow from the dynamic and adaptive<br />

process associated with implementing and updating the Plan.<br />

Population dynamics and distribution. Information on population dynamics and distribution informs most<br />

aspects of wildlife management, including subsistence harvest and human-bear interactions, and is key to<br />

understanding current and future conservation status. The ecological dependence of polar bears on sea-ice<br />

as a platform from which to access energy-rich marine prey has shown for some populations that changes in<br />

the physical sea-ice environment can induce declines in population vital rates, and thus must be considered<br />

when evaluating future persistence. Because of this, long-term studies of subpopulation status, including<br />

the vital rates used as demographic recovery criteria, are needed to measure progress towards persistencebased<br />

goals. Research and monitoring on the two polar bear subpopulations shared by the U.S suggests that<br />

physical and biological differences between populations may affect how polar bears respond to habitat loss,<br />

especially in the near term, underscoring potential spatial and temporal variation in the response of polar<br />

bears to climate change.<br />

Research actions — Population dynamics and distribution<br />

1. Estimation of population status and trend:<br />

a. via estimation of demographic parameters including population size, population growth rate,<br />

survival, and recruitment, or indices of these parameters.<br />

b. via biological and ecological indices.<br />

c. via the sex, age, and reproductive composition of human-caused removals.<br />

2. Determine current distribution of populations and implications for population size estimation, harvest<br />

allocation, and meta-analysis of data from overlapping populations.<br />

3. Evaluate the mechanistic relationships between sea-ice, prey abundance, and polar bear vital rates<br />

over timeframes relevant to the Conservation Management Plan.<br />

4. Estimate the numbers of bears coming on shore in late summer and assess differential survival and<br />

fitness for bears that spend time on shore versus remaining on sea-ice.<br />

a. Expand onshore non-invasive genetic sampling,<br />

5. Monitor the level and type (e.g., sex and age) of human-caused lethal removals<br />

6. Develop models to evaluate future population status and management actions, perform sensitivity<br />

analysis with respect to management actions, perform risk assessments with respect to human-caused<br />

removals, and identify key information needs.<br />

a. Develop a standardized and adaptive approach for estimating sustainable harvest rates,<br />

communicating the risks and tradeoffs of different harvest strategies to managers, and evaluating<br />

the effects of harvest on population status.<br />

7. Analyze optimal study design, sample size, and spatial and temporal distribution of sampling effort to<br />

answer key demographic questions; perform cost-benefit analyses.<br />

8. Evaluate emerging technologies (e.g., high-resolution satellite imagery and other technological<br />

advancements) for integration into existing monitoring plans.<br />

9. Develop effective and less-invasive research and monitoring techniques.<br />

10. Evaluate circumpolar patterns in genetic, behavioral, life-history, and ecological diversity for polar<br />

bears in relation to the groupings of polar bears considered in FG2.<br />

11. Improve our understanding of why polar bear populations differ in their response to sea-ice loss<br />

and based on that understanding identify representative populations in different ecoregions for<br />

monitoring responses to sea-ice loss.<br />

<strong>Polar</strong> <strong>Bear</strong> Conservation Management Plan 93

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