{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T16:55:40Z","timestamp":1762102540864,"version":"3.40.5"},"reference-count":52,"publisher":"Cambridge University Press (CUP)","issue":"4","license":[{"start":{"date-parts":[[2020,9,14]],"date-time":"2020-09-14T00:00:00Z","timestamp":1600041600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Bird Conservation International"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>Bycatch is one of the main threats to marine biodiversity, affecting ocean ecosystems at a worldwide scale. The main focus of bycatch studies has been on the impact of larger vessels, with few studies assessing the impact of artisanal fisheries. Moreover, bycatch studies are often limited to a small number of marine regions, and significant gaps still exist in our knowledge of the spatial and temporal patterns of seabird bycatch. Here we present a multi-approach method to accurately quantify seabird bycatch driven by small- and medium-sized fishing fleets operating in a high priority area for seabird conservation on the Portuguese mainland. Results of three mitigation measures to reduce seabird bycatch on fishing gear where seabird bycatch is most likely to occur were also tested: high contrast panels in bottom gillnets, black hooks in demersal longlines and a bird scaring device in purse seines. The efficacy, acceptance, and economic viability were tested for each mitigation measure. Sixty-seven individuals of seven seabird species were bycaught during 295 monitored fishing trips between 2015 and 2018. Bycatch occurred mainly in demersal longlines (0.07 birds fishing event<jats:sup>-1<\/jats:sup>), followed by purse seines (0.02 birds fishing event<jats:sup>-1<\/jats:sup>) and bottom gillnets (0.01 birds fishing event<jats:sup>-1<\/jats:sup>). Nevertheless, the bird scaring device caused birds to interact less with the vessel (the presence of gulls was reduced by 11%), thus decreasing the likelihood of bycatch. This device has proved to be low-cost (representing less than 5% income of a single day\u2019s landings) and easy to implement, being also well accepted by purse seine fishermen. It was not possible to evaluate the efficacy of high contrast panels and black hooks, as no bycatch events were recorded during trials.<\/jats:p>","DOI":"10.1017\/s0959270920000489","type":"journal-article","created":{"date-parts":[[2020,9,14]],"date-time":"2020-09-14T09:16:17Z","timestamp":1600074977000},"page":"553-572","source":"Crossref","is-referenced-by-count":10,"title":["A contribution to reducing bycatch in a high priority area for seabird conservation in Portugal"],"prefix":"10.1017","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7904-4385","authenticated-orcid":false,"given":"NUNO","family":"OLIVEIRA","sequence":"first","affiliation":[]},{"given":"ANA","family":"ALMEIDA","sequence":"additional","affiliation":[]},{"given":"HANY","family":"ALONSO","sequence":"additional","affiliation":[]},{"given":"EMANUEL","family":"CONSTANTINO","sequence":"additional","affiliation":[]},{"given":"ANDR\u00c9","family":"FERREIRA","sequence":"additional","affiliation":[]},{"given":"IV\u00c1N","family":"GUTI\u00c9RREZ","sequence":"additional","affiliation":[]},{"given":"ANA","family":"SANTOS","sequence":"additional","affiliation":[]},{"given":"ELISABETE","family":"SILVA","sequence":"additional","affiliation":[]},{"given":"JOANA","family":"ANDRADE","sequence":"additional","affiliation":[]}],"member":"56","published-online":{"date-parts":[[2020,9,14]]},"reference":[{"key":"S0959270920000489_r22","doi-asserted-by":"publisher","DOI":"10.3389\/fevo.2019.00214"},{"key":"S0959270920000489_r49","doi-asserted-by":"publisher","DOI":"10.1016\/S0006-3207(96)00084-5"},{"key":"S0959270920000489_r9","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0026079"},{"key":"S0959270920000489_r3","doi-asserted-by":"publisher","DOI":"10.1007\/s00227-017-3082-4"},{"key":"S0959270920000489_r44","doi-asserted-by":"publisher","DOI":"10.1016\/j.biocon.2011.02.023"},{"key":"S0959270920000489_r14","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0196731"},{"key":"S0959270920000489_r38","doi-asserted-by":"publisher","DOI":"10.1016\/j.gecco.2014.11.006"},{"key":"S0959270920000489_r29","doi-asserted-by":"publisher","DOI":"10.1016\/j.tree.2004.09.004"},{"key":"S0959270920000489_r15","doi-asserted-by":"publisher","DOI":"10.1007\/s10344-018-1234-6"},{"key":"S0959270920000489_r51","doi-asserted-by":"publisher","DOI":"10.1016\/j.biocon.2009.02.025"},{"key":"S0959270920000489_r7","unstructured":"Calado, J. H. , Ramos, J. A. , Almeida, A. , Oliveira, N. and Paiva, V. H. (in press) Seabird-fishery interactions and bycatch at multiple gears in the Atlantic Iberian coast. Ocean Coast. Manag."},{"key":"S0959270920000489_r17","doi-asserted-by":"publisher","DOI":"10.1016\/j.biocon.2019.06.033"},{"key":"S0959270920000489_r28","doi-asserted-by":"publisher","DOI":"10.1111\/acv.12040"},{"key":"S0959270920000489_r47","doi-asserted-by":"publisher","DOI":"10.1093\/icesjms\/fsr118"},{"key":"S0959270920000489_r36","doi-asserted-by":"publisher","DOI":"10.1016\/j.biocon.2007.02.023"},{"volume-title":"Report of the Working Group on Bycatch of Protected Species (WGBYC), 12\u201315 June 2017","year":"2017","key":"S0959270920000489_r24"},{"volume-title":"R: a language and environment for statistical computing","year":"2019","author":"Team","key":"S0959270920000489_r42"},{"volume-title":"Atlas das aves marinhas de Portugal","year":"2014","author":"Meirinho","key":"S0959270920000489_r33"},{"key":"S0959270920000489_r18","first-page":"e006027","article-title":"High contrast panels and lights do not reduce bird bycatch in Baltic Sea gillnet fisheries","volume":"18","author":"Field","year":"2019","journal-title":"Glob. Ecol. Conserv"},{"volume-title":"Bird conservation - global evidence for the effects of interventions","year":"2012","author":"Williams","key":"S0959270920000489_r50"},{"key":"S0959270920000489_r12","doi-asserted-by":"publisher","DOI":"10.3989\/scimar.2003.67s257"},{"key":"S0959270920000489_r1","unstructured":"Abreu, S. , Leotte, F. and Arthur, R. (2010) Assessment of the status, development and diversification of fisheries-dependent communities: Peniche, Case Study Report. Peniche."},{"key":"S0959270920000489_r39","doi-asserted-by":"publisher","DOI":"10.1007\/s00227-010-1417-5"},{"key":"S0959270920000489_r37","first-page":"3","article-title":"Evaluating the potential of artificial nests as a conservation measure for Cory\u2019s Shearwaters Calonectris borealis breeding in Berlengas Archipelago, Portugal","volume":"27","author":"Oliveira","year":"2020","journal-title":"Airo"},{"key":"S0959270920000489_r19","first-page":"65","article-title":"Modelling abundance and distribution of seabird by-catch in the Spanish Mediterranean longline fishery","volume":"57","author":"Garc\u00eda-Barcelona","year":"2010","journal-title":"Ardeola"},{"key":"S0959270920000489_r4","unstructured":"Belant, J. L. , Woronecki, P. P. , Dolbeer, R. A. , Thomas, W. , Belarttn, J. L. , Wororzeckin, P. P. , Dolbeern, R. A. and Seamarls, T. W. (2016) Ineffectiveness of five commercial deterrents for nesting starlings. 26: 264-268."},{"key":"S0959270920000489_r25","doi-asserted-by":"crossref","first-page":"1653","DOI":"10.1111\/j.1523-1739.2007.00825.x","article-title":"Saving the vaquita: Immediate action, not more data","volume":"21","author":"Jaramillo-Legorreta","year":"2007","journal-title":"Conserv. Biol"},{"key":"S0959270920000489_r8","first-page":"1","article-title":"Recording foraging seabirds at sea standardised recording and coding of foraging behaviour and multi-species foraging associations","volume":"6","author":"Camphuysen","year":"2004","journal-title":"Atlantic Seabirds"},{"key":"S0959270920000489_r52","doi-asserted-by":"publisher","DOI":"10.1016\/j.biocon.2013.04.002"},{"key":"S0959270920000489_r40","doi-asserted-by":"publisher","DOI":"10.1098\/rstb.2004.1574"},{"volume-title":"Pequena pesca na costa continental portuguesa: caracteriza\u00e7\u00e3o s\u00f3cio-econ\u00f3mica, descri\u00e7\u00e3o da actividade e identifica\u00e7\u00e3o de problemas","year":"2014","author":"Gaspar","key":"S0959270920000489_r20"},{"key":"S0959270920000489_r45","first-page":"3","article-title":"Contribution to the study of the breeding biology of the European shag Phalacrocorax aristotelis in Berlengas archipelago","volume":"24","author":"Silva","year":"2017","journal-title":"Portugal. Airo"},{"key":"S0959270920000489_r5","doi-asserted-by":"publisher","DOI":"10.1016\/S0006-3207(00)00178-6"},{"volume-title":"Assessment of seabird bycatch in Peruvian artisanal fisheries. Final Report to the British Petroleum Conservation Programme","year":"2006","author":"Melly","key":"S0959270920000489_r34"},{"key":"S0959270920000489_r48","first-page":"59","volume":"107","author":"Velando","year":"2002","journal-title":"Population modelling of European shags (Phalacrocorax aristotelis) at their southern limit\u00a0: conservation implications"},{"key":"S0959270920000489_r35","doi-asserted-by":"publisher","DOI":"10.1016\/j.biocon.2005.07.011"},{"key":"S0959270920000489_r27","doi-asserted-by":"publisher","DOI":"10.3354\/meps08847"},{"key":"S0959270920000489_r41","doi-asserted-by":"publisher","DOI":"10.1016\/j.biocon.2017.04.002"},{"key":"S0959270920000489_r16","doi-asserted-by":"publisher","DOI":"10.1017\/S0959270912000020"},{"key":"S0959270920000489_r2","doi-asserted-by":"publisher","DOI":"10.3354\/esr00347"},{"key":"S0959270920000489_r10","first-page":"16","article-title":"Response of birds to raptor models","volume":"4","author":"Conover","year":"1979","journal-title":"Proc. Bird Control Semin"},{"key":"S0959270920000489_r30","doi-asserted-by":"publisher","DOI":"10.1016\/S0165-7836(02)00078-4"},{"key":"S0959270920000489_r21","doi-asserted-by":"publisher","DOI":"10.1016\/j.marpol.2011.01.021"},{"key":"S0959270920000489_r31","doi-asserted-by":"publisher","DOI":"10.1098\/rsos.180254"},{"key":"S0959270920000489_r32","doi-asserted-by":"publisher","DOI":"10.1016\/j.gecco.2014.11.004"},{"key":"S0959270920000489_r13","doi-asserted-by":"publisher","DOI":"10.3354\/meps12026"},{"key":"S0959270920000489_r43","doi-asserted-by":"publisher","DOI":"10.31170\/0056"},{"key":"S0959270920000489_r26","doi-asserted-by":"publisher","DOI":"10.3354\/meps08254"},{"key":"S0959270920000489_r11","doi-asserted-by":"publisher","DOI":"10.1007\/s00267-008-9077-7"},{"key":"S0959270920000489_r6","doi-asserted-by":"publisher","DOI":"10.1016\/j.fishres.2007.10.013"},{"volume-title":"Report of the Working Group on Seabird Ecology (WGSE)","year":"2009","key":"S0959270920000489_r23"},{"key":"S0959270920000489_r46","first-page":"196","article-title":"Bird damage to fruit crops\u00a0: A comparison of several deterrent techniques","volume":"27","author":"Steensma","year":"2016","journal-title":"Proc. Vertebr. Pest Conf"}],"container-title":["Bird Conservation International"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0959270920000489","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,8,13]],"date-time":"2024-08-13T19:15:26Z","timestamp":1723576526000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0959270920000489\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,9,14]]},"references-count":52,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2021,12]]}},"alternative-id":["S0959270920000489"],"URL":"https:\/\/doi.org\/10.1017\/s0959270920000489","relation":{},"ISSN":["0959-2709","1474-0001"],"issn-type":[{"type":"print","value":"0959-2709"},{"type":"electronic","value":"1474-0001"}],"subject":[],"published":{"date-parts":[[2020,9,14]]}}}