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Berenstain Bears by the Sea

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McNutt, J. W. & Gusset, M. Declining body size in an endangered large mammal. Biol. J. Linn. Soc. 105, 8–12 (2012). In the book , Brother is wearing a red short sleeve with blue pants, on the show he was only seen wearing red and white trunks Regehr, E. V. et al. Conservation status of polar bears ( Ursus maritimus) in relation to projected sea-ice declines. Biol. Lett. 12, 20160556 (2016). They're coming ashore in areas where people are active, whether it's near communities where people are engaged in subsistence activities, or whether it's in the oil and gas industrial footprint where people are working [outdoors] on a daily basis,” Atwood says. “And that raises the likelihood of human-bear interactions and conflict.”

Dunaway, F (2009). "Seeing global warming: contemporary art and the fate of the planet". Environmental History. 14 (1): 9–31. doi: 10.1093/envhis/14.1.9. Laidre, K. L.; Supple, M. A.; Born, E. W.; Regehr, E. V.; Wiig, Ø; Ugarte, F.; Aars, J.; Dietz, R.; Sonne, C.; Hegelund, P.; Isaksen, C.; Akse, G. B.; Cohen, B.; Stern, H. L.; Moon, T.; Vollmers, C.; Corbett-Detig, R.; Paetkau, D.; Shapiro, B. (2022). "Glacial ice supports a distinct and undocumented polar bear subpopulation persisting in late 21st-century sea-ice conditions". Science. 376 (6599): 1333–1338. Bibcode: 2022Sci...376.1333L. doi: 10.1126/science.abk2793. PMID 35709290. S2CID 249746650. Lee, P. C., Majluf, P. & Gordon, I. J. Growth, weaning and maternal investment from a comparative perspective. J. Zool. Lond. 225, 99–114 (1991).Durner, G. M. et al. Predicting 21st century polar bear habitat distribution from global climate models. Ecol. Monogr. 79, 25–58 (2009).

Polar bear mating takes place on the sea ice and during spring, mostly between March and May. [10] [116] [117] [84] Males search for females in estrus and often travel in twisting paths which reduces the chances of them encountering other males while still allowing them to find females. The movements of females remain linear and they travel more widely. [118] The mating system can be labelled as female-defence polygyny, serial monogamy or promiscuity. [117] [119] Gasc, J-P; Abourachid, A (1997). "Kinematic analysis of the locomotion of the polar bear ( Ursus maritimus, Phipps, 1774) in natural and experimental conditions". Netherlands Journal of Zoology. 48 (2): 145–167. doi: 10.1163/156854298X00156. Bromaghin, J. F. et al. Polar bear population dynamics in the Southern Beaufort Sea during a period of sea ice decline. Ecol. Appl. 25, 634–651 (2016). a b c Lan, T.; Leppälä, K.; Tomlin, C.; Talbot, S. L.; Sage, G. K.; Farley, S. D.; Shideler, R. T.; Bachmann, L.; Wiig, Ø; Albert, V. A.; Salojärvi, J.; Mailund, T.; Drautz-Moses, D. I.; Schuster, S. C.; Herrera-Estrella, L.; Lindqvist, C. (2022). "Insights into bear evolution from a Pleistocene polar bear genome". Proceedings of the National Academy of Sciences. 119 (14): e2200016119. Bibcode: 2022PNAS..11900016L. doi: 10.1073/pnas.2200016119. PMC 9214488. PMID 35666863. Hamilton, S. G. et al. Projected polar bear sea ice habitat in the Canadian Arctic Archipelago. PLoS ONE 9, e113746 (2014).Wilson, R. R.; Perham, C.; French-McCay, D. P.; Balouskus, R. (2018). "Potential impacts of offshore oil spills on polar bears in the Chukchi Sea". Environmental Pollution. 235: 652–659. doi: 10.1016/j.envpol.2017.12.057. PMID 29339335. Marine mammal adaptation to an aquatic lifestyle varies considerably between species. Both cetaceans and sirenians are fully aquatic and therefore are obligate water dwellers. Pinnipeds are semiaquatic; they spend the majority of their time in the water but need to return to land for important activities such as mating, breeding and molting. In contrast, both sea otters and the polar bear are mostly terrestrial and only go into the water on occasions of necessity, and are thus much less adapted to aquatic living. The diets of marine mammals vary considerably as well; some eat zooplankton, others eat fish, squid, shellfish, or seagrass, and a few eat other mammals. While the number of marine mammals is small compared to those found on land, their roles in various ecosystems are large, especially concerning the maintenance of marine ecosystems, through processes including the regulation of prey populations. This role in maintaining ecosystems makes them of particular concern as 23% of marine mammal species are currently threatened. Notz, D. & Stroeve, J. Observed Arctic sea-ice loss directly follows anthropogenic CO 2 emission. Science 354, 747–750 (2016). Best, R. C. (1982). "Thermoregulation in resting and active polar bears". Journal of Comparative Physiology A. 146: 63–73. doi: 10.1007/BF00688718. S2CID 36351845.

Derocher, A. E.; Van Parijs, S. M.; Wiig, Ø (2010). "Nursing vocalization of a polar bear cub". Ursus. 21 (2): 189–191. doi: 10.2192/09SC025.1. S2CID 55599722. a b c d Kurtén, B. (1964). "The evolution of the polar bear, Ursus maritimus Phipps". Acta Zoologica Fennica. 108: 1–30. Molnár, P. K., Derocher, A. E., Thiemann, G. W. & Lewis, M. A. Predicting survival, reproduction and abundance of polar bears under climate change. Biol. Conserv. 143, 1612–1622 (2010); corrigendum 177, 230–231 (2014). Lunn, N. J., Stirling, I., Andriashek, D. & Richardson, E. Selection of maternity dens by female polar bears in western Hudson Bay, Canada and the effects of human disturbance. Polar Biol. 27, 350–356 (2004). Nowhere in the polar bear’s range is fall greeted with as much enthusiasm as in Canada’s Hudson Bay. There, sea ice melts completely in summer, forcing all the bears ashore during the warmer months. As soon as the temperatures begin to drop, the bears are on the move, keen to find food after weeks of fasting.a b c d Khattab, M. Q.; Tributsch, H. (2015). "Fibre-optical light scattering technology in polar bear hair: A re-evaluation and new results". Journal of Advanced Biotechnology and Bioengineering. 3 (2): 38–51. doi: 10.12970/2311-1755.2015.03.02.2. Derocher, A. E. & Stirling, I. Aspects of survival in juvenile polar bears. Can. J. Zool. 74, 1246–1252 (1996). Cavalieri, D. J., Parkinson, C. L., Gloersen, P., Comiso, J. C. & Zwally, H. J. Deriving long-term time series of ice cover from satellite passive-microwave multisensor data sets. J. Geophys. Res. 104, 15803–15814 (1999).

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