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title Cetacean occurrence, habitat preferences and potential for cetacean-fishery interactions in Iberian Atlantic waters: results from cooperative research involving local stakeholders
authors Goetz, S; Read, FL; Ferreira, M; Portela, JM; Santos, MB; Vingada, J; Siebert, U; Marcalo, A; Santos, J; Araujo, H; Monteiro, S; Caldas, M; Riera, M; Pierce, GJ
author full name Goetz, Sabine; Read, Fiona L.; Ferreira, Marisa; Martinez Portela, Julio; Begona Santos, Maria; Vingada, Jose; Siebert, Ursula; Marcalo, Ana; Santos, Jorge; Araujo, Helder; Monteiro, Silvia; Caldas, Mara; Riera, Marcos; Pierce, Graham J.
title Cetacean occurrence, habitat preferences and potential for cetacean-fishery interactions in Iberian Atlantic waters: results from cooperative research involving local stakeholders
nationality internacional
source AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
language English
document type Article
author keywords ocean; habitat mapping; distribution; mammals; fishing
keywords plus BOTTLE-NOSED-DOLPHIN; NORTH-WEST SPAIN; GALICIA NW SPAIN; DELPHINUS-DELPHIS; HARBOR PORPOISE; MARINE MAMMALS; INTERVIEW SURVEY; ADJACENT WATERS; MANAGEMENT; DIET
abstract 1. Iberian Atlantic waters are heavily exploited by Spanish and Portuguese fisheries. Overlaps between fishery target species and cetacean diet, and between fishing grounds and cetacean foraging areas, can lead to cetacean-fishery interactions including bycatch mortality of cetaceans. 2. The present study assesses cetacean distribution, habitat preferences and hotspots for cetacean-fishery interactions by using a cooperative research approach with stakeholder participation (fishers, fisheries observers, fisheries authorities, scientists), as well as the combination of different opportunistic data sources (interviews, on-board observations). The usefulness of each data type is evaluated. The implications of results for the monitoring and mitigation of cetacean-fishery interactions are discussed. 3. Generalized linear models and GIS maps were used to relate cetacean occurrence patterns to environmental variables (geographic area, water depth, coastal morphology) and to fishing activities (fishing grounds, fisheries target species). 4. Common and bottlenose dolphins were the most frequently sighted species, the former in waters >50 m, frequently from purse seiners and trawlers, and the latter particularly inside the south Galician rias and close to vessels operating further offshore in Portuguese waters. Harbour porpoises were seen over the whole continental shelf, often next to beach seines, while long-finned pilot whales and striped dolphins were mostly seen from vessels fishing offshore. 5. Results suggest that cetacean occurrence is linked to prey distribution and that interactions with fisheries are most likely for common dolphins (with coastal purse seines and offshore trawls), bottlenose dolphins and harbour porpoises (coastal nets). The different data sources were complementary and provided results broadly consistent with previous studies on cetacean occurrence in the same area, although sightings frequency for some cetacean species was biased by survey method. Opportunistic sampling has certain restrictions concerning reliability, but can cover a wide area at comparatively low cost and make use of local ecological knowledge to yield information required for cetacean conservation. Copyright (c) 2014 John Wiley & Sons, Ltd.
author address [Goetz, Sabine; Vingada, Jose; Marcalo, Ana; Santos, Jorge; Araujo, Helder; Pierce, Graham J.] Univ Aveiro, Ctr Estudos Ambiente & Mar CESAM, P-3800 Aveiro, Portugal; [Goetz, Sabine; Read, Fiona L.; Martinez Portela, Julio; Begona Santos, Maria; Caldas, Mara] Ctr Oceanog Vigo, Inst Espanol Oceanog, Vigo, Spain; [Read, Fiona L.] CSIC, Inst Invest Marinas, Vigo, Spain; [Ferreira, Marisa; Vingada, Jose; Marcalo, Ana; Santos, Jorge; Araujo, Helder; Monteiro, Silvia] Univ Minho, Dept Biol, CBMA, SPVS, Braga, Portugal; [Siebert, Ursula] Univ Vet Med Hannover, Inst Terr & Aquat Wildlife Res ITAW, Fdn TiHo, Busum, Germany; [Riera, Marcos] INNFISH Technol Innovat, Vigo, Spain; [Pierce, Graham J.] Univ Aberdeen, Oceanlab, Newburgh, Aberdeen, Scotland
reprint address Goetz, S (reprint author), Thunen Inst Balt Sea Fisheries, Alter Hafen Sud 2, D-18069 Rostock, Germany.
e-mail address sabine.goetz@ti.bund.de
researcherid number Monteiro, Silvia/F-8611-2015; Pierce, Graham/
orcid number Monteiro, Silvia/0000-0002-8784-7276; Pierce, Graham/0000-0002-4744-4501
funding agency and grant number Galician Council for Rural and Marine Affairs (Conselleria do Medio Rural e do Mar, Xunta de Galicia); EU [MEXC-CT-2006-042337, MEST-CT-2005-020501]; EEA; German Academic Exchange Service (DAAD); Fundacao para a Ciencia e a Tecnologia (FCT); EU FP7 grant MYFISH [289257]; LOTOFPEL project (Plan Nacional de I + D + I) [CTM 2010-16053]; Xunta de Galicia (programme PEME I+D e I+D SUMA)
funding text We wish to express our gratitude to all Galician and Portuguese fishers that took part in the survey for sharing their time and information with us. We would also like to acknowledge the support of the Galician Council for Rural and Marine Affairs (Conselleria do Medio Rural e do Mar, Xunta de Galicia), namely the cooperation of the fisheries' observers (Luis Perez Miser, Francisco Jose Lopez, Juan Chapela Portela, Felix Barreiro, Candido Aguiar Couto, Jose Maria Garcia Rozamontes, Jose Manuel Garrido Vispo, Jose Manuel Perez Veres, Javier Garcia Romero, Juan Gonzalez Perez), the coordinators (Ricardo Arnaiz Ibarrondo, Francisco Filgueira Rodriguez) and the staff (Manuel Garcia Tasende, Jorge Ribo Landin, JoseManuel Campelos Alvarez) of the Technical Unit for Inshore Fisheries. Furthermore, we would like to thank Baltasar Patino and Gersom Costas for provision of background information and logistical support, and Juan Santos and Edward Morgan, for assisting with the interviewing. Interviews in Galicia were carried out in the framework of the project ECOSUMMER (ECOsystem approach to Sustainable Managament of the Marine Environment and its living Resource) with EU funding (projects MEXC-CT-2006-042337 and MEST-CT-2005-020501). The interview survey in Portugal was conducted under the SafeSea Project (Sustainable local fisheries and promotion of a safe sea for cetaceans) and supported by the EEA Grants programme (EEA Financial Mechanism 2004-2009). SG was also funded by the German Academic Exchange Service (DAAD) and the Fundacao para a Ciencia e a Tecnologia (FCT). MBS participation was part of the EU FP7 grant MYFISH (no. 289257) and the LOTOFPEL project (Plan Nacional de I + D + I, CTM 2010-16053). The Whalewatch Project was financed by the Xunta de Galicia (programme PEME I+D e I+D SUMA).
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cited reference count 84
publisher WILEY-BLACKWELL
publisher city HOBOKEN
publisher address 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
issn 1052-7613
29-character source abbreviation AQUAT CONSERV
iso source abbreviation Aquat. Conserv.-Mar. Freshw. Ecosyst.
publication date FEB
year published 2015
volume 25
issue 1
beginning page 138
ending page 154
digital object identifier (doi) 10.1002/aqc.2481
page count 17
web of science category Environmental Sciences; Marine & Freshwater Biology; Water Resources
subject category Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources
document delivery number CC1KO
unique article identifier WOS:000350099800013
link http://dx.doi.org/10.1002/aqc.2481