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Impact of Ecotourism on Harbor seal (Phoca vitulina) behavior in Pedersen Lake, Kenai Fjords National Park Brenda Norcross Institute for Marine Science University of Alaska, Fairbanks Anne Hoover-Miller Alaska SeaLife Center Seward, Alaska Caroline Jezierski School of Fisheries and Ocean Science University of Alaska, Fairbanks
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Ecotourism Largest & fastest growing industry Natural & cultural based “No-take” concept Low impact Increased pressure on natural places
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Study Area Glacial lake in Kenai Fjords National Park Access via a tidally influenced stream
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Harbor Seals Population declined 80% in the past 25 years Increased reliance on glacial ice in Pedersen Lake
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Disturbance Humans can alter animal behavior Impact of sea kayak tourism on harbor seal behavior Past studies indicate non-motorized vessels can have greater impact
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Objectives 1.Determine if the frequency of harbor seals abandoning ice increases in human presence 2.Develop paddling recommendations 3.Determine if education helps minimize disturbance Add photo
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Data Collection 2004- archive tapes from remotely operated cameras 2005- 10 days in field, recording via cameras 2006- 28 days in field, recording via cameras
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HS Behavior Monitoring Field & remote observation protocol Select focal group Identify seals by location on iceberg 1 2 3 4 5 6 Record behavior every 10 sec for 20 min Photo: OASLC- HS Fact Sheet
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Behaviors Resting (0) Alert (1) Abandoning (2) Out of view (0) Break in observations (0) Grooming (0) Data sheet example
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Kayak interactions
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Preliminary Results
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Impact of Tide The frequency of seals abandoning ice does not vary significantly with tide level. (p<0.70) 2006 Data Observations collected at all tide stages Kayak & walker observations concentrated during high tide
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Impact of Time of Day 2006 data The frequency of seals abandoning the ice does not vary significantly with time of day. (p < 0.30) Observations collected during all times of day Kayak & walker observations concentrated during the afternoon
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Comparisons Among Years Overall % of seals abandoning the ice varies significantly with years. (p < 0.001) N=335N=1094N=1048
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N=263N=43N=29N=673N=382N=39N=563N=372N=113 significant for all years (p 0.001) For ALL years, the presence of sea kayakers and walkers has a significant effect on the frequency of harbor seals abandoning the ice.
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Education Pre-season local guide training Presented results from summer 2005 Offered paddling recommendations
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Paddling Recommendations Choose a path with the least number of seals hauled out Observe seal behavior Maintain distance Place iceberg between you and seals
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Education Results The frequency of seals abandoning the ice varies significantly whether a trip is guided or not (p<0.001) The frequency of seals abandoning the ice varies significantly with mitigation training (p<0.001) The frequency of seals abandoning the ice does NOT vary significantly when humans are absent and when guides with mitigation training are present (p<0.5)
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Summary YES, humans have an impact on harbor seal behavior BUT, education can be effective in minimizing this disturbance
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Acknowledgments Funding sources: OASLC (2005 +) EVOS (2005 +) Francis Fay Memorial Scholarship (2005-2007) Ken Turner Memorial Scholarship (2006-2007) UAF SFOS TA (2004-2005) Interns: Kristi Heffron Morgan Sternberg Rebecca Pearce Field Volunteer: Sarah Schoen Jacob Knight Transport to field site: Greg Spencer Justin Jenniges Field Prep: National Park Service (NPS) Peter Armato- Director OASLC Jim Pfeiffenberger- Education OASLC Jim Ireland- Head L.E. Ranger Shelley Hall & Meg Hahr- permits Mike Tetreau- bear safety Ian Martin- bear safety CJ Rea- Education Specialist SeeMore Wilderness Systems staff Kayak info & support: Dave and Wendy Kayak Adventures Worldwide Graduate Committee: Brenda Norcross- UAF Anne Hoover-Miller- ASLC Lori Polasek- UAF/ASLC Kate Wynne- UAF MAP agent Field equipment: NPS/OASLC SSL project HS project Stats help: Dan Hennen Protocol Support: Brendan Kelly- UAS Beth Matthews- UAS Tom Smith- USGS Laura Boren
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