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DOES LOOKING FOR OIL DISPLACE DEEP-DIVING CETACEANS? The effect of seismic surveys on sperm whale distribution in the Norwegian Sea Iva Kovacic & Benjamin.

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Presentation on theme: "DOES LOOKING FOR OIL DISPLACE DEEP-DIVING CETACEANS? The effect of seismic surveys on sperm whale distribution in the Norwegian Sea Iva Kovacic & Benjamin."— Presentation transcript:

1 DOES LOOKING FOR OIL DISPLACE DEEP-DIVING CETACEANS? The effect of seismic surveys on sperm whale distribution in the Norwegian Sea Iva Kovacic & Benjamin Torres & Marta Acosta

2 Effects of seismic surveys on sperm whale distribution in the Norwegian Sea. 26th Conference of the ECS, Galway, Ireland. NORWAY: ONE OF THE WORLD’S LARGEST OIL EXPORTERS RECENT INCREASE IN EXPLORATION EFFORT STUDIES ON POSSIBLE IMPACTS OF SEISMIC SURVEYS ON WHALES AND DOLPHINS: MOSTLY FOCUSED ON DIRECT EFFECTS EFFECTS ON FISH AND CEPHALOPODES BACKGROUND

3 Effects of seismic surveys on sperm whale distribution in the Norwegian Sea. 26th Conference of the ECS, Galway, Ireland.

4 STUDY SITE SPECIES Effects of seismic surveys on sperm whale distribution in the Norwegian Sea. 26th Conference of the ECS, Galway, Ireland. 2007-2009 Andøya Canyon (Bleiksdypet)

5 Effects of seismic surveys on sperm whale distribution in the Norwegian Sea. 26th Conference of the ECS, Galway, Ireland. PRELIMINARY DISTRIBUTION STUDY PLATFORMS

6 MaxEnt Habitat suitability model MaxEnt Habitat suitability model Bathymetry Slope Chlorophyll a Sperm whale distribution Seismic survey tracks (provided by NPD) DATA ANALYSIS Effects of seismic surveys on sperm whale distribution in the Norwegian Sea. 26th Conference of the ECS, Galway, Ireland.

7 RESULTS 1990-2006 & 2010

8 Effects of seismic surveys on sperm whale distribution in the Norwegian Sea. 26th Conference of the ECS, Galway, Ireland. 2007/2008

9 THANKS FOR YOUR ATTENTION!! Acknowledgements: Thanks to Whalesafari Andenes and to all the volunteers and researchers collecting data from 1990 until 2011.


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