Effectiveness of Pingers on the Harbour Porpoise Phocoena phocoena relicta Abel, 1905 (Cetacea: Phocoenidae) in Turkey as Revealed by Shore-based Observations

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dc.authoridOzsandikci, Ugur/0000-0002-7246-5494
dc.contributor.authorOzsandikci, Ugur
dc.contributor.authorGonener, Sedat
dc.date.accessioned2025-03-23T19:47:30Z
dc.date.available2025-03-23T19:47:30Z
dc.date.issued2020
dc.departmentSinop Üniversitesi
dc.description.abstractThe aim of the present study was to assess the effectiveness of pinger devices on the Black-Sea harbour porpoises Phocoena phocoena relicta. The study was carried out in Sinop, Turkey. between 16 July and 22 October 2016. A buoy without a pinger device was placed and observations were carried out during 26 days (53.2 hour) throughout the control period. Subsequently. a pinger was placed on the buoy and 28 days (58 hour) of experiment period was performed. During the study, the average distances, closest observed approaches (COA) and frequency of porpoise sightings in the zone of vulnerability. a 100 m buffer around the buoy, have been calculated and compared between the two periods. According to this. the average distance increased from 775.35 +/- 38.96 m during the control period to 1536.05 +/- 81.33 m during the experiment period (p<0.05). Distances of COA were calculated for control and experiment periods, respectively, 443.86 +/- 94.18 m and 724.34 +/- 98.89 m. Porpoises entered the zone of vulnerability significantly more frequently during the experiment period as compared to the control period (p<0.05). Pingers used in the study were found to be effective on keeping porpoises away from the area. However. a possible habituation effect can be revealed depending on the long-term use of these devices.
dc.identifier.endpage159
dc.identifier.issn0324-0770
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85101676511
dc.identifier.scopusqualityQ3
dc.identifier.startpage155
dc.identifier.urihttps://hdl.handle.net/11486/7350
dc.identifier.volume72
dc.identifier.wosWOS:000521828400018
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherInst Zoology, Bas
dc.relation.ispartofActa Zoologica Bulgarica
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectby-catch
dc.subjectBlack Sea
dc.subjectfishermen - marine mammals conflict prevention
dc.titleEffectiveness of Pingers on the Harbour Porpoise Phocoena phocoena relicta Abel, 1905 (Cetacea: Phocoenidae) in Turkey as Revealed by Shore-based Observations
dc.typeArticle

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