{"id":"https://openalex.org/W2058098487","doi":"https://doi.org/10.2989/ajms.2007.29.3.8.338","title":"A visual and acoustic survey for harbour porpoises off North-West Africa: further evidence of a discrete population","display_name":"A visual and acoustic survey for harbour porpoises off North-West Africa: further evidence of a discrete population","publication_year":2007,"publication_date":"2007-12-01","ids":{"openalex":"https://openalex.org/W2058098487","doi":"https://doi.org/10.2989/ajms.2007.29.3.8.338","mag":"2058098487"},"language":"en","primary_location":{"id":"doi:10.2989/ajms.2007.29.3.8.338","doi":"https://doi.org/10.2989/ajms.2007.29.3.8.338","is_oa":false,"landing_page_url":"https://doi.org/10.2989/ajms.2007.29.3.8.338","pdf_url":null,"source":{"id":"https://openalex.org/S121195568","display_name":"African Journal of Marine Science","issn_l":"1814-232X","issn":["1814-232X","1814-2338"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dhet","dongbi-c","jpps-1","jufo-1","norway-1","poland-70","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"African Journal of Marine Science","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5051892648","display_name":"Oliver J. Boisseau","orcid":"https://orcid.org/0000-0001-7490-2558","observed_orcids":["https://orcid.org/0000-0001-7490-2558"]},"institutions":[{"id":"https://openalex.org/I152225415","display_name":"International Fund for Animal Welfare","ror":"https://ror.org/043c66817","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I152225415"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"O Boisseau","raw_affiliation_strings":["Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK","institution_ids":["https://openalex.org/I152225415"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067409765","display_name":"J. Matthews","orcid":"https://orcid.org/0009-0003-0985-2648","observed_orcids":["https://orcid.org/0009-0003-0985-2648"]},"institutions":[{"id":"https://openalex.org/I152225415","display_name":"International Fund for Animal Welfare","ror":"https://ror.org/043c66817","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I152225415"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"J Matthews","raw_affiliation_strings":["Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK","institution_ids":["https://openalex.org/I152225415"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5021352039","display_name":"Douglas M. Gillespie","orcid":"https://orcid.org/0000-0001-9628-157X","observed_orcids":["https://orcid.org/0000-0001-9628-157X"]},"institutions":[{"id":"https://openalex.org/I152225415","display_name":"International Fund for Animal Welfare","ror":"https://ror.org/043c66817","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I152225415"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"D Gillespie","raw_affiliation_strings":["Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK","institution_ids":["https://openalex.org/I152225415"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5009372175","display_name":"Claire Lacey","orcid":"https://orcid.org/0000-0003-0541-8193","observed_orcids":["https://orcid.org/0000-0003-0541-8193"]},"institutions":[{"id":"https://openalex.org/I152225415","display_name":"International Fund for Animal Welfare","ror":"https://ror.org/043c66817","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I152225415"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"C Lacey","raw_affiliation_strings":["Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK","institution_ids":["https://openalex.org/I152225415"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013994508","display_name":"Anna Moscrop","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I152225415","display_name":"International Fund for Animal Welfare","ror":"https://ror.org/043c66817","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I152225415"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"A Moscrop","raw_affiliation_strings":["Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Song of the Whale Research Team, International Fund for Animal Welfare Charitable Trust, 87-90 Albert Embankment, London, SE1 7UD, UK","institution_ids":["https://openalex.org/I152225415"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5107448211","display_name":"Najib El Ouamari","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210136578","display_name":"Institut National de Recherche Halieutique","ror":"https://ror.org/03zhpcf80","country_code":"MA","type":"other","lineage":["https://openalex.org/I4210136578"]}],"countries":["MA"],"is_corresponding":false,"raw_author_name":"N El Ouamari","raw_affiliation_strings":["Institut National de Recherche Halieutique, CRRH Nador, BP 493, Nador, Maroc"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institut National de Recherche Halieutique, CRRH Nador, BP 493, Nador, Maroc","institution_ids":["https://openalex.org/I4210136578"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.2667,"has_fulltext":false,"cited_by_count":17,"citation_normalized_percentile":{"value":0.55426251,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"29","issue":"3","first_page":"403","last_page":"410"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10659","display_name":"Marine animal studies overview","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10659","display_name":"Marine animal studies overview","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10230","display_name":"Marine and fisheries research","score":0.0,"subfield":{"id":"https://openalex.org/subfields/1104","display_name":"Aquatic Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10199","display_name":"Wildlife Ecology and Conservation","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/harbour-porpoise","display_name":"Phocoena phocoena","score":1.0},{"id":"https://openalex.org/keywords/population-structure-demography","display_name":"population structure (demography)","score":0.8379999995231628},{"id":"https://openalex.org/keywords/maghreb","display_name":"Maghreb","score":0.6850000023841858},{"id":"https://openalex.org/keywords/strait-of-gibraltar","display_name":"Strait of Gibraltar","score":0.6010000109672546},{"id":"https://openalex.org/keywords/acoustic-detection","display_name":"acoustic detection","score":0.5569999814033508},{"id":"https://openalex.org/keywords/fishing-impacts","display_name":"fisheries impacts","score":0.5339999794960022},{"id":"https://openalex.org/keywords/gillnet-fisheries","display_name":"gillnet fishing","score":0.5640000104904175},{"id":"https://openalex.org/keywords/cetacean-conservation","display_name":"cetacean conservation","score":0.878000020980835}],"concepts":[{"id":"https://openalex.org/C2780450670","wikidata":"https://www.wikidata.org/wiki/Q135955","display_name":"Phocoena","level":4,"score":0.9326844811439514},{"id":"https://openalex.org/C2777318892","wikidata":"https://www.wikidata.org/wiki/Q2544816","display_name":"Harbour","level":2,"score":0.8070620894432068},{"id":"https://openalex.org/C2779918970","wikidata":"https://www.wikidata.org/wiki/Q10867","display_name":"Porpoise","level":3,"score":0.7633452415466309},{"id":"https://openalex.org/C505870484","wikidata":"https://www.wikidata.org/wiki/Q180538","display_name":"Fishery","level":1,"score":0.7425307035446167},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.6872256398200989},{"id":"https://openalex.org/C115880899","wikidata":"https://www.wikidata.org/wiki/Q1124247","display_name":"Bay","level":2,"score":0.5901585817337036},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.572381317615509},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.5543121099472046},{"id":"https://openalex.org/C514101110","wikidata":"https://www.wikidata.org/wiki/Q14373","display_name":"Fishing","level":2,"score":0.5499168038368225},{"id":"https://openalex.org/C2988746298","wikidata":"https://www.wikidata.org/wiki/Q131274","display_name":"Beaufort sea","level":3,"score":0.541562020778656},{"id":"https://openalex.org/C2777803996","wikidata":"https://www.wikidata.org/wiki/Q160","display_name":"Cetacea","level":2,"score":0.4340943992137909},{"id":"https://openalex.org/C3017853928","wikidata":"https://www.wikidata.org/wiki/Q11114344","display_name":"North west","level":2,"score":0.41037964820861816},{"id":"https://openalex.org/C100970517","wikidata":"https://www.wikidata.org/wiki/Q52107","display_name":"Physical geography","level":1,"score":0.21799588203430176},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.19041568040847778},{"id":"https://openalex.org/C136894858","wikidata":"https://www.wikidata.org/wiki/Q213926","display_name":"Sea ice","level":2,"score":0.14710447192192078},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.1391265094280243},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.1235170066356659},{"id":"https://openalex.org/C149923435","wikidata":"https://www.wikidata.org/wiki/Q37732","display_name":"Demography","level":1,"score":0.0659799575805664},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.06085562705993652},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.0},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.2989/ajms.2007.29.3.8.338","doi":"https://doi.org/10.2989/ajms.2007.29.3.8.338","is_oa":false,"landing_page_url":"https://doi.org/10.2989/ajms.2007.29.3.8.338","pdf_url":null,"source":{"id":"https://openalex.org/S121195568","display_name":"African Journal of Marine Science","issn_l":"1814-232X","issn":["1814-232X","1814-2338"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dhet","dongbi-c","jpps-1","jufo-1","norway-1","poland-70","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"African Journal of Marine Science","raw_type":"journal-article"},{"id":"pmh:oai:ajol.info:article/33494","doi":null,"is_oa":false,"landing_page_url":"https://www.ajol.info/index.php/ajms/article/view/33494","pdf_url":null,"source":{"id":"https://openalex.org/S121195568","display_name":"African Journal of Marine Science","issn_l":"1814-232X","issn":["1814-232X","1814-2338"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dhet","dongbi-c","jpps-1","jufo-1","norway-1","poland-70","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"1814-232X","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/14","score":1.0,"display_name":"Life below water"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":23,"referenced_works":["https://openalex.org/W288735064","https://openalex.org/W1527241903","https://openalex.org/W1964172786","https://openalex.org/W1981458726","https://openalex.org/W1982359825","https://openalex.org/W1987059976","https://openalex.org/W2012979899","https://openalex.org/W2022767620","https://openalex.org/W2033538907","https://openalex.org/W2033923482","https://openalex.org/W2080261377","https://openalex.org/W2086640916","https://openalex.org/W2086645130","https://openalex.org/W2105533573","https://openalex.org/W2280509282","https://openalex.org/W2329711475","https://openalex.org/W2346451066","https://openalex.org/W2497765954","https://openalex.org/W2621411342","https://openalex.org/W2760844544","https://openalex.org/W2908494669","https://openalex.org/W2938968424","https://openalex.org/W2996109554"],"related_works":["https://openalex.org/W2037483532","https://openalex.org/W2186758231","https://openalex.org/W2410109589","https://openalex.org/W4408307899","https://openalex.org/W2112777442","https://openalex.org/W2132702776","https://openalex.org/W2064935002","https://openalex.org/W1967335714","https://openalex.org/W103018596","https://openalex.org/W4324355149"],"abstract_inverted_index":{"The":[0,113],"distribution":[1],"of":[2,35,49,57,65,77,82,91,136,153,182,185],"harbour":[3],"porpoises":[4,45,96,125,137],"Phocoena":[5],"phocoena":[6],"in":[7,46,52,70,87,117,139],"southern":[8],"Europe":[9],"and":[10,41,59,79,105,132,161,189],"along":[11],"the":[12,33,102,111,122,128,133,150,183],"Atlantic":[13,47,129],"African":[14,26,130],"coast":[15],"is":[16,192],"poorly":[17],"understood,":[18],"with":[19,28],"tentative":[20],"assessments":[21],"suggesting":[22],"a":[23,29],"discrete":[24],"West":[25],"population":[27,191],"northern":[30],"limit":[31],"around":[32],"Straits":[34],"Gibraltar.":[36],"This":[37],"study":[38],"describes":[39],"visual":[40,83],"acoustic":[42,66,145],"surveys":[43],"for":[44,194],"waters":[48],"North-West":[50,168],"Africa":[51,169],"spring":[53],"2005":[54],"between":[55,158],"latitudes":[56],"20\u00b0N":[58],"37\u00b0N.":[60],"During":[61],"this":[62,186],"period,":[63],"276h":[64],"data":[67],"were":[68,97,147,156],"collected":[69],"all":[71],"sea":[72,89],"states":[73,90],"(from":[74],"3":[75],"125km":[76],"trackline)":[78],"60h":[80],"(824km)":[81],"effort":[84],"was":[85],"conducted":[86],"Beaufort":[88],"three":[92,99],"or":[93],"less.":[94],"Harbour":[95],"seen":[98,116],"times":[100],"on":[101,106,149],"survey":[103,151],"trackline":[104],"four":[107,114],"additional":[108],"occasions":[109],"off":[110,167],"trackline.":[112],"individuals":[115],"Agadir":[118],"Bay":[119],"(30\u00b0N)":[120],"represent":[121],"northernmost":[123],"living":[124],"reported":[126,138],"from":[127,173],"coasts":[131],"first":[134],"sightings":[135],"Moroccan":[140],"waters.":[141],"In":[142],"addition,":[143],"31":[144],"detections":[146],"made":[148,157],"trackline,":[152],"which":[154],"23":[155],"Dakhla":[159],"(24\u00b0N)":[160],"Cap":[162],"Barbas":[163],"(22\u00b0N).":[164],"Fishing":[165],"activities":[166],"are":[170],"intense,":[171],"ranging":[172],"small-scale":[174],"artisanal":[175],"gillnetters":[176],"to":[177],"international":[178],"freeze-trawlers.":[179],"Further":[180],"monitoring":[181],"status":[184],"little":[187],"known":[188],"isolated":[190],"required":[193],"effective":[195],"conservation":[196],"management.":[197]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}
