{"datasetrec":{"DasID":3624,"Acronym":null,"StandardTitle":"Sperm whales off Peru during IMARPE surveys (1995-2002)","OrigTitle":null,"OrigTitleLangID":null,"OrigTitleLangCode":null,"OrigTitleLang":null,"OrigTitleLangNL":null,"VersionName":"1","ContactEmail":null,"VersionDate":null,"VersionDay":28,"VersionMonth":11,"VersionYear":2012,"SizeReference":null,"EngAbstract":"Sightings data to show the general pattern of distribution of sperm whales off Peru, a previously important whaling ground.","EngDescr":"Thirty-eight sightings of sperm whales (Physeter macrocephalus) were recorded off Peru (3 degrees S - 18 degrees S) during 21 surveys conducted aboard platforms of opportunity between 1995 and 2002, with a search effort of 33,406.6 nautical miles of observation. Two main areas of concentration were detected: northern Peru (19 sightings) and southern Peru (16 sightings), but seasonality could not be confirmed. Almost 58% of sightings occurred during the same or consecutive days. Group size ranged from 1 to 18 individuals, with a mean of 3.5 individuals (SD = 3.9). The modal group size was one, with single whales accounting for 36.8% of sightings. Groups of three or more individuals accounted for 39.5%. An important increase of sightings occurred between 2001 and 2002, accounting 68% of the records, suggesting migratory movements towards Peruvian waters from other regions of the eastern Pacific Ocean.\r\n\r\nPositive correlations between indices of relative abundance and the anomaly of sea surface temperature were found, although warm events as El Niño appear to increase the uncertainty in sighting rates, reducing correlation values. Positive relationship between indices of relative abundance and fishery's CPUE of Dosidicus gigas suggest some grade of interaction, although the question about the role of D. gigas in the diet of sperm whales in the area must be solved for further conclusions. It is priority to perform specific surveys for population estimation, as well as non-lethal research about feeding and the effect of the fishery competition over sperm whales.","OrigAbstract":null,"OrigDescr":null,"Comments":null,"ReleaseDate":null,"ReleaseDate0":null,"OrigDescrLang":null,"EmbargoDate":null,"OrigDescrLangNL":null,"OrigLangCode":null,"OrigLangCodeExtended":null,"OrigLangID":null,"DescrCompFlag":0,"DescrTransFlag":0,"Citation":"García-Godos, I. 2006. A note on the occurrence of sperm whales (Physeter macrocephallus) off Peru, 1995-2002. Journal of Cetacean Research and Management. 8(1):113-119","AccessConstraints":null,"UDate":"2013-01-23","CDate":"2012-11-28","CurrencyDate":null,"RevisionDate":null,"DateLastModified":{"date":"2026-05-30 01:37:59.451226","timezone_type":1,"timezone":"+02:00"},"CheckedFlag":0,"PublicFlag":1,"VlizCoreFlag":1,"MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"StatusID":1,"DasType":"Data","DasTypeID":1,"DasOrigin":"Monitoring: field survey","Progress":"Completed","AccessConstraint":"Attribution-NonCommercial (CC BY-NC)","AccConstrEN":"Attribution-NonCommercial (CC BY-NC)","AccConstrDisplay":"<a rel=\"license\" href=\"https://creativecommons.org/licenses/by-nc/4.0/\" target=\"_blank\"><img alt=\"Creative Commons License\" style=\"border:0px;height:15px;width:80px;vertical-align:middle;\" src=\"https://www.marinespecies.org/aphia/images/cc/by-nc.png\" /></a> This dataset is licensed under a <a rel=\"license\" href=\"https://creativecommons.org/licenses/by-nc/4.0/\" target=\"_blank\">Creative Commons Attribution-NonCommercial 4.0 International License</a>.","License":"https://creativecommons.org/licenses/by-nc/4.0","AccConstrDescription":"This license lets others remix, tweak, and build upon your work non-commercially, and although their new works must also acknowledge you and be non-commercial, they don’t have to license their derivative works on the same terms","Lineage":null,"AccConID":24},"dois":null,"spcols":null,"keywords":[{"ThesaurusTerm":"I, Pacific","ThesTypID":34,"ThesType":"ASFA Geoterms","Code":null,"Description":null,"OrigThesTerm":"I, Pacific","DutchTerm":null,"URI":null,"DasKeywordDescr":null}],"parents":null,"children":null,"othrel":null,"othrelrev":[{"DasID":1865,"Acronym":"OBIS-SEAMAP","StandardTitle":"Spatial Ecological Analysis of Megavertebrate Populations","Relation":"Published dataset","RelationY":"Published in","RelID":13,"doi":null,"vlizDoi":null}],"ownerships":[{"OrderNr":1,"Surname":null,"Firstname":null,"Initials":null,"PerPublicFlag":null,"AdrID":null,"Email":null,"InsPublicFlag":1,"Acronym":"IMARPE","OrigNameLangCode":"es","OrigNameLangID":17,"FullOrigName":"Instituto del Mar del Peru","InsOwnerCNT":2,"PersID":null,"InsID":2349,"FullInstitute":"Instituto del Mar del Perú","RoleID":20,"Role":"Data owner","OrigName":"Instituto del Mar del Peru","StandardName":"Instituto del Mar del Perú","FullAcronym":"IMARPE","ORC":null,"ROR":null},{"OrderNr":2,"Surname":"Garcia-Godos","Firstname":"Ignacio","Initials":"I.","PerPublicFlag":1,"AdrID":null,"Email":null,"InsPublicFlag":1,"Acronym":"IMARPE","OrigNameLangCode":"es","OrigNameLangID":17,"FullOrigName":"Instituto del Mar del Peru","InsOwnerCNT":2,"PersID":26826,"InsID":2349,"FullInstitute":"Instituto del Mar del Perú","RoleID":24,"Role":"Contact","OrigName":"Instituto del Mar del Peru","StandardName":"Instituto del Mar del Perú","FullAcronym":"IMARPE","ORC":null,"ROR":null}],"taxterms":[{"DasTaxtTypID":1,"DasTaxtType":"Taxonomic coverage","TaxtID":19013,"TaxTerm":"Cetacea","AphiaID":2688,"DutchTerm":"Walvissen"}],"frameworks":null,"otherterms":null,"temporal":[{"DasDateID":3044,"StartYear":1995,"EndYear":2002,"StartDay":19,"EndDay":9,"StartDate":"1995-12-19","EndDate":"2002-11-09","DasDate":null,"Resolution":null,"ResolutionNL":null,"Notes":null,"StartMonth0":12,"StartMonth":"December","StartMonthNL":"December","EndMonth0":11,"EndMonth":"November","EndMonthNL":"November","Progress":"Completed","ProgressNL":"Afgelopen"}],"geographical":[{"GeoTerm":"Pacific Ocean","DasGeoID":6350,"DasGeoTerm":null,"DasID":3624,"GeotID":2251,"X":null,"Y":null,"MaxX":null,"MaxY":null,"StationName":null,"Precision":null,"CoordSystID":null,"GeoDatumID":null,"OrigCoordMinX":null,"OrigCoordMinY":null,"OrigCoordMaxX":null,"OrigCoordMaxY":null,"OrderNr":null,"Projection":null,"GeoDatum":null,"GeoObjectID":1903,"OrigGeoTerm":"Pacific Ocean","DutchTerm":null}],"meastypes":null,"dasthemes":[{"DasThemeID":70,"DasTheme":"Biology > Mammals","DasTheme0":"Mammals","DutchTerm":"Zoogdieren"}],"projects":null,"refs":[{"0":248374,"BRefID":248374,"1":"Based on this dataset","Relation":"Based on this dataset","2":2,"RelationID":2,"3":"<b>García-Godos, I.</b> (2006). A note on the occurrence of sperm whales (<i>Physeter macrocephalus</i>) off Peru, 1995-2002. <i>J. Cetacean Res. Manage. 8(1)</i>: 113–119","RR":"<b>García-Godos, I.</b> (2006). A note on the occurrence of sperm whales (<i>Physeter macrocephalus</i>) off Peru, 1995-2002. <i>J. Cetacean Res. Manage. 8(1)</i>: 113–119","4":"A note on the occurrence of sperm whales (<i>Physeter macrocephalus</i>) off Peru, 1995-2002","StT":"A note on the occurrence of sperm whales (<i>Physeter macrocephalus</i>) off Peru, 1995-2002","5":"García-Godos, I.","RSA":"García-Godos, I.","6":"Gebaseerd op deze dataset","DutchTerm":"Gebaseerd op deze dataset","7":2006,"AnaDate":2006,"8":null,"MonDate":null,"9":". <i>J. Cetacean Res. Manage. 8(1)</i>: 113–119","":". <i>J. Cetacean Res. Manage. 8(1)</i>: 113–119","10":null,"doi":null}],"urls":[{"URL":"https://obis.org/dataset/c4abaa14-c71a-4a4c-a3a2-e39f0136aa6e","externalID":"c4abaa14-c71a-4a4c-a3a2-e39f0136aa6e","URLTypeCode":null,"URLType":"Online dataset","URLTypID":19,"downloadURL":null,"FileName":null},{"URL":"seamap.env.duke.edu/dataset/386","externalID":"386","URLTypeCode":null,"URLType":"Dataset information","URLTypID":17,"downloadURL":null,"FileName":null}],"pictures":null,"urlmaps":null,"spatreps":null,"fileformats":null,"resmessage":"","complete":1}