Download A Little Less Arctic: Top Predators in the World’s Largest by D. B. Stewart, D. G. Barber (auth.), Steven H. Ferguson, PDF

By D. B. Stewart, D. G. Barber (auth.), Steven H. Ferguson, Lisa L. Loseto, Mark L. Mallory (eds.)

In Arctic Canada, Hudson Bay is a domain of significant exploration historical past, aboriginal tradition, and an unlimited marine desolate tract helping huge populations of marine mammals and birds. those contain the most iconic Arctic animals like beluga, narwhal, bowhead whales, and polar bears. because of the demanding situations of engaging in box learn during this sector, a few of the mysteries of the place those animals circulate, and the way they may be able to live on in such doubtless inhospitable, ice-choked habitats are only now being unlocked. for instance, are polar bears being changed by way of killer whales? This new info couldn't be extra salient, because the Hudson Bay quarter is present process speedy environmental switch because of international warming, in addition to elevated pressures from commercial improvement pursuits. rather less Arctic brings jointly a few of the world’s prime Arctic scientists to give the present country of information at the actual and organic features of Hudson Bay and specifically the ecology of marine natural world to spotlight what info is needed to higher comprehend and adapt to the adjustments underway, and to forecast what's going to ensue to marine flora and fauna of this substantial inland sea within the future.

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Extra info for A Little Less Arctic: Top Predators in the World’s Largest Northern Inland Sea, Hudson Bay

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Farther north and moving offshore, where the salinity is higher and water colder, there are fewer freshwater species and more Arctic species such as Arctic char, Greenland cod (Gadus ogac) and shorthorn sculpin (M. scorpius). Use of Estuaries by Belugas The largest summering concentration of belugas in the world occurs in the Nelson River estuary area, and there are smaller concentrations at the estuaries of the Seal, Churchill, Winisk, Severn, and Nastapoka rivers (Richard 1991, 2005). Use of these estuaries by belugas may be related to moulting and/or neonate survival (Stewart and Lockhart 2005).

1991). In spring, the highest densities of breeding adults occur on stable landfast ice in areas with good snow cover, whereas non-breeders occur at the floe edge or in the moving pack ice (Smith 1975; Lunn et al. 1997; Holst et al. 1999; Chambellant this volume). Ringed seals can often be seen in spring when they come out onto the ice beside their breathing holes to bask in the sun and moult their hair coat. Ringed seal pups are born in late March or early April, nursed on the ice, and abandoned at ice breakup (McLaren 1958) (Fig.

P. Martini (ed) Canadian inland seas. Elsevier Oceanography Series 44. Elsevier Science, Amsterdam. F. 1988. On the mean and tidal currents in Hudson Strait. Atmosphere-Ocean 26: 252–266. P. 1987. Density stratification, nutrient and chlorophyll distributions in the Hudson Strait region during summer in relation to tidal mixing. Cont. Shelf Res. 7: 599–607. EAG (Environmental Applications Group Limited). 1984. Environmental literature review Hudson Bay offshore petroleum exploration. Prepared for Canadian Occidental Petroleum Limited, Toronto, ON.

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