diet and foraging ecology of bowhead whales in cumberland
play

Diet and foraging ecology of bowhead whales in Cumberland Sound, NU - PowerPoint PPT Presentation

Diet and foraging ecology of bowhead whales in Cumberland Sound, NU Energy rich Arctic copepods Whale behaviour suggests deep feeding Probable prey concentrations at depth Cumberland Sound seasonally important Sarah


  1. Diet and foraging ecology of bowhead whales in Cumberland Sound, NU Energy rich Arctic copepods ¤ Whale behaviour suggests deep feeding ¤ Probable prey concentrations at depth ¤ Cumberland Sound seasonally important ¤ Sarah Fortune 1 , Steve Ferguson 2 , Mark Baumgartner 3 , Bernard LeBlanc 2 & Andrew Trites 1 1 University of British Columbia 2 Fisheries and Oceans Canada & University of Manitoba 3 Woods Hole Oceanographic Institution ¡

  2. Zooplankton sampling locations 75 70 65 Davis Strait 60 ¡ 67.0 Baffin Island 55 66.5 Hudson 0 200 400 600 km Pangnirtung Bay 66.0 50 ¡ -100 -90 -80 -70 -60 65.5 ¤ Surface (0.5 m) Cumberland Sound 65.0 ¤ Oblique (~12 m) 64.5 ¤ Vertical (~200 m) 0 20 40 60 km ¤ Multiple depth strata 64.0 -67 -66 -65 -64 -63 -62 -61 -60

  3. Whale dive behaviour classification Bottom time >50% total dive duration ¤ 3 days in Kingnait Fiord ¤ ~20 minute dives ¤ >90% square dives ¤ Dive depth ~197 m

Recommend


More recommend