Do whales really care about conventional fisheries acoustics?
International audience Acoustic monitoring is considered essential for the modern exploration and understanding of marine communities and ecosystems. Nevertheless,underwater noise pollution may have potentially negative effects, particularly on marine mammal and fish physiology and behaviour. This s...
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Language: | English |
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HAL CCSD
2007
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Online Access: | https://hal.science/hal-03224799 https://hal.science/hal-03224799/document https://hal.science/hal-03224799/file/Poster%20Nyborg%20Do%20whales%20care1.pdf |
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ftinsu:oai:HAL:hal-03224799v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
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ftinsu |
language |
English |
topic |
Fisheries acoustics underwater sound conventional sounder Sonar Underwater Noise Tolerance Threshold [SDV]Life Sciences [q-bio] |
spellingShingle |
Fisheries acoustics underwater sound conventional sounder Sonar Underwater Noise Tolerance Threshold [SDV]Life Sciences [q-bio] Nøttestad, Leif Brehmer, Patrice Josse, Erwan Doksæter, Lise Pavan, Gianni Sancho, Gorka Lebourges-Dhaussy, Anne Georgakarakos, Stratis Aumeeruddy, Riaz Dalen, John Do whales really care about conventional fisheries acoustics? |
topic_facet |
Fisheries acoustics underwater sound conventional sounder Sonar Underwater Noise Tolerance Threshold [SDV]Life Sciences [q-bio] |
description |
International audience Acoustic monitoring is considered essential for the modern exploration and understanding of marine communities and ecosystems. Nevertheless,underwater noise pollution may have potentially negative effects, particularly on marine mammal and fish physiology and behaviour. This study aim toquantify how offshore whales and dolphins react on conventional fisheries acoustics from both a stationary and moving research vessel. An acoustic monitoring methodology was applied with conventional fisheries acoustic instrumentation. A three-frequency echosounder (38, 70 and 120 kHz)and an omnidirectional multibeam sonar (24 kHz) were connected to artificial drifting Fish Aggregating Devices (FADs) during an international scientificcruise (February 2004) in the western Indian Ocean. A moving vessel equipped with multi-frequency echosounders (18, 38, 70, 120 and 200 kHz) andmultibeam (20-30, 110-120 kHz) sonars was also used during an ecosystem survey in the Norwegian Sea. Digital filming and ping-to-ping sonar tracking of animals were used to study marine mammal behaviour and possible reaction patterns to emitted sound from hydro-acoustic instrumentation.When using conventional fisheries acoustics in the Indian Ocean, a group of sei whale approached a stationary vessel, providing some evidence that the acoustic signals did not cause a measurable avoidance response by the whales. Similarly, large whales (fin, humpback and sperm whales), and dolphins (pilot and killer whales) did not show measurable behavioural responses and avoidance reactions towards a moving vessel. Groups of whales and dolphins were actively feeding on herring, mackerel and krill for 10-40 minutes simultaneously as the vessel was within 50-800 meters distance at different speed (2-12 knots). Our results suggest that many marine mammals in open oceans do not actively avoid stationary or moving vessels applying fisheries acoustics. Further studies are needed to find operational hydro-acoustic thresholds (intensity, time and frequency), ... |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Recherche pour le Développement (IRD) European Commission Arthur N Popper Anthony Hawkins |
format |
Conference Object |
author |
Nøttestad, Leif Brehmer, Patrice Josse, Erwan Doksæter, Lise Pavan, Gianni Sancho, Gorka Lebourges-Dhaussy, Anne Georgakarakos, Stratis Aumeeruddy, Riaz Dalen, John |
author_facet |
Nøttestad, Leif Brehmer, Patrice Josse, Erwan Doksæter, Lise Pavan, Gianni Sancho, Gorka Lebourges-Dhaussy, Anne Georgakarakos, Stratis Aumeeruddy, Riaz Dalen, John |
author_sort |
Nøttestad, Leif |
title |
Do whales really care about conventional fisheries acoustics? |
title_short |
Do whales really care about conventional fisheries acoustics? |
title_full |
Do whales really care about conventional fisheries acoustics? |
title_fullStr |
Do whales really care about conventional fisheries acoustics? |
title_full_unstemmed |
Do whales really care about conventional fisheries acoustics? |
title_sort |
do whales really care about conventional fisheries acoustics? |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-03224799 https://hal.science/hal-03224799/document https://hal.science/hal-03224799/file/Poster%20Nyborg%20Do%20whales%20care1.pdf |
op_coverage |
NYBORG, Denmark |
geographic |
Indian Norwegian Sea |
geographic_facet |
Indian Norwegian Sea |
genre |
Norwegian Sea Sei Whale |
genre_facet |
Norwegian Sea Sei Whale |
op_source |
THE EFFECTS OF NOISE ON AQUATIC LIFE https://hal.science/hal-03224799 THE EFFECTS OF NOISE ON AQUATIC LIFE, Aug 2007, NYBORG, Denmark. 1 p. multigr |
op_relation |
hal-03224799 https://hal.science/hal-03224799 https://hal.science/hal-03224799/document https://hal.science/hal-03224799/file/Poster%20Nyborg%20Do%20whales%20care1.pdf IRD: fdi:010081984 |
op_rights |
http://hal.archives-ouvertes.fr/licences/publicDomain/ info:eu-repo/semantics/OpenAccess |
_version_ |
1790605449926541312 |
spelling |
ftinsu:oai:HAL:hal-03224799v1 2024-02-11T10:07:15+01:00 Do whales really care about conventional fisheries acoustics? Les baleines se soucient-elles vraiment de l'acoustique conventionnelle des pêches? : Interessieren sich Wale wirklich für die konventionelle Fischereiakustik? Nøttestad, Leif Brehmer, Patrice Josse, Erwan Doksæter, Lise Pavan, Gianni Sancho, Gorka Lebourges-Dhaussy, Anne Georgakarakos, Stratis Aumeeruddy, Riaz Dalen, John Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Recherche pour le Développement (IRD) European Commission Arthur N Popper Anthony Hawkins NYBORG, Denmark 2007-08-13 https://hal.science/hal-03224799 https://hal.science/hal-03224799/document https://hal.science/hal-03224799/file/Poster%20Nyborg%20Do%20whales%20care1.pdf en eng HAL CCSD hal-03224799 https://hal.science/hal-03224799 https://hal.science/hal-03224799/document https://hal.science/hal-03224799/file/Poster%20Nyborg%20Do%20whales%20care1.pdf IRD: fdi:010081984 http://hal.archives-ouvertes.fr/licences/publicDomain/ info:eu-repo/semantics/OpenAccess THE EFFECTS OF NOISE ON AQUATIC LIFE https://hal.science/hal-03224799 THE EFFECTS OF NOISE ON AQUATIC LIFE, Aug 2007, NYBORG, Denmark. 1 p. multigr Fisheries acoustics underwater sound conventional sounder Sonar Underwater Noise Tolerance Threshold [SDV]Life Sciences [q-bio] info:eu-repo/semantics/conferenceObject Conference poster 2007 ftinsu 2024-01-24T17:31:43Z International audience Acoustic monitoring is considered essential for the modern exploration and understanding of marine communities and ecosystems. Nevertheless,underwater noise pollution may have potentially negative effects, particularly on marine mammal and fish physiology and behaviour. This study aim toquantify how offshore whales and dolphins react on conventional fisheries acoustics from both a stationary and moving research vessel. An acoustic monitoring methodology was applied with conventional fisheries acoustic instrumentation. A three-frequency echosounder (38, 70 and 120 kHz)and an omnidirectional multibeam sonar (24 kHz) were connected to artificial drifting Fish Aggregating Devices (FADs) during an international scientificcruise (February 2004) in the western Indian Ocean. A moving vessel equipped with multi-frequency echosounders (18, 38, 70, 120 and 200 kHz) andmultibeam (20-30, 110-120 kHz) sonars was also used during an ecosystem survey in the Norwegian Sea. Digital filming and ping-to-ping sonar tracking of animals were used to study marine mammal behaviour and possible reaction patterns to emitted sound from hydro-acoustic instrumentation.When using conventional fisheries acoustics in the Indian Ocean, a group of sei whale approached a stationary vessel, providing some evidence that the acoustic signals did not cause a measurable avoidance response by the whales. Similarly, large whales (fin, humpback and sperm whales), and dolphins (pilot and killer whales) did not show measurable behavioural responses and avoidance reactions towards a moving vessel. Groups of whales and dolphins were actively feeding on herring, mackerel and krill for 10-40 minutes simultaneously as the vessel was within 50-800 meters distance at different speed (2-12 knots). Our results suggest that many marine mammals in open oceans do not actively avoid stationary or moving vessels applying fisheries acoustics. Further studies are needed to find operational hydro-acoustic thresholds (intensity, time and frequency), ... Conference Object Norwegian Sea Sei Whale Institut national des sciences de l'Univers: HAL-INSU Indian Norwegian Sea |