MARINE POLICY

Available online 6 November 2013

Distribution of endemic cetaceans in relation to hydrocarbon development and commercial shipping in a warming Arctic

  • a Okapi Wildlife Associates, 27 Chandler Lane, Hudson, Quebec, Canada J0P 1H0
  • b WWF-Canada, 245 Eglinton Avenue East, Suite 410, Toronto, Ontario, Canada M4P 3J1
  • c WWF-Canada, 409 Granville St., Suite 1588, Vancouver, B.C., Canada V6C 1T2
  • d Greenland Institute of Natural Resources, Box 570, 3900 Nuuk, Greenland
  • e Norwegian Polar Institute, 9296 Tromsø, Norway
  • f Department of Wildlife Management, North Slope Borough, Barrow, AK, USA
  • g WWF-International, 1196 Gland, Switzerland
  • h WWF-Netherlands, Driebergseweg 10, 3708 JB Zeist, The Netherlands
  • i Van Hall Larenstein, University of Applied Sciences, Agora 1, 8901 BV Leeuwarden, The Netherlands

Abstract

The Arctic is one of the fastest-changing parts of the planet. Global climate change is already having major impacts on Arctic ecosystems. Increasing temperatures and reductions in sea ice are particular conservation concerns for ice-associated species, including three endemic cetaceans that have evolved in or joined the Arctic sympagic community over the last 5 M years. Sea ice losses are also a major stimulant to increased industrial interest in the Arctic in previously ice-covered areas. The impacts of climate change are expected to continue and will likely intensify in coming decades. This paper summarizes information on the distribution and movement patterns of the three ice-associated cetacean species that reside year-round in the Arctic, the narwhal (Monodon monoceros), beluga (white whale, Delphinapterus leucas), and bowhead whale (Balaena mysticetus). It maps their current distribution and identifies areas of seasonal aggregation, particularly focussing on high-density occurrences during the summer. Sites of oil and gas exploration and development and routes used for commercial shipping in the Arctic are compared with the distribution patterns of the whales, with the aim of highlighting areas of special concern for conservation. Measures that should be considered to mitigate the impacts of human activities on these Arctic whales and the aboriginal people who depend on them for subsistence include: careful planning of ship traffic lanes (re-routing if necessary) and ship speed restrictions; temporal or spatial closures of specified areas (e.g. where critical processes for whales such as calving, calf rearing, resting, or intense feeding take place) to specific types of industrial activity; strict regulation of seismic surveys and other sources of loud underwater noise; and close and sustained monitoring of whale populations in order to track their responses to environmental disturbance.

FULL STORY: http://www.sciencedirect.com/science/article/pii/S0308597X13002303

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