Using passive acoustics and shore based surveys to investigate the use of Lundy Island’s near shore water by small odontocetes

Natalie Squires, Katy Hodgson-Ball, Kimberley A. Bennett, Stephen Votier, Simon Ingram

Research output: Contribution to journalArticle

Abstract

The use of waters around Lundy by dolphins and porpoises was measured using summer shore-based watches and passive acoustic surveillance between July 2011 and July 2012. Common dolphins (Delphinus delphis) were the only cetacean species observed during shore-based surveys. C-PODs moored on the Ethel and MV Robert wrecks close to the Lundy coast showed a peak in delphinid vocal activity during August 2011. Passive acoustic detections of harbour porpoises (Phocoena phocoena) were highest during ebb tidal phases and most often associated with the tidal rip at the south of the island. These findings show tidal and monthly influences on odontocete behaviour and highlight the value of continuous, passive acoustic monitoring for these highly mobile marine predators around Lundy.
Original languageEnglish
Pages (from-to)39-56
Number of pages18
JournalJournal of the Lundy Field Society
Volume4
Publication statusPublished - 2014

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porpoise
acoustics
dolphin
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cetacean
water
harbor
predator
coast
summer
monitoring
detection
surveillance

Cite this

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title = "Using passive acoustics and shore based surveys to investigate the use of Lundy Island’s near shore water by small odontocetes",
abstract = "The use of waters around Lundy by dolphins and porpoises was measured using summer shore-based watches and passive acoustic surveillance between July 2011 and July 2012. Common dolphins (Delphinus delphis) were the only cetacean species observed during shore-based surveys. C-PODs moored on the Ethel and MV Robert wrecks close to the Lundy coast showed a peak in delphinid vocal activity during August 2011. Passive acoustic detections of harbour porpoises (Phocoena phocoena) were highest during ebb tidal phases and most often associated with the tidal rip at the south of the island. These findings show tidal and monthly influences on odontocete behaviour and highlight the value of continuous, passive acoustic monitoring for these highly mobile marine predators around Lundy.",
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Using passive acoustics and shore based surveys to investigate the use of Lundy Island’s near shore water by small odontocetes. / Squires, Natalie; Hodgson-Ball, Katy; Bennett, Kimberley A.; Votier, Stephen; Ingram, Simon.

In: Journal of the Lundy Field Society, Vol. 4, 2014, p. 39-56.

Research output: Contribution to journalArticle

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AU - Votier, Stephen

AU - Ingram, Simon

PY - 2014

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AB - The use of waters around Lundy by dolphins and porpoises was measured using summer shore-based watches and passive acoustic surveillance between July 2011 and July 2012. Common dolphins (Delphinus delphis) were the only cetacean species observed during shore-based surveys. C-PODs moored on the Ethel and MV Robert wrecks close to the Lundy coast showed a peak in delphinid vocal activity during August 2011. Passive acoustic detections of harbour porpoises (Phocoena phocoena) were highest during ebb tidal phases and most often associated with the tidal rip at the south of the island. These findings show tidal and monthly influences on odontocete behaviour and highlight the value of continuous, passive acoustic monitoring for these highly mobile marine predators around Lundy.

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