{"datasetrec":{"DasID":3470,"Acronym":null,"StandardTitle":"Distribution of small cetaceans in the nearshore waters of Sarawak, East Malaysia","OrigTitle":null,"OrigTitleLangID":null,"OrigTitleLangCode":null,"OrigTitleLang":null,"OrigTitleLangNL":null,"VersionName":"1","ContactEmail":null,"VersionDate":null,"VersionDay":22,"VersionMonth":11,"VersionYear":2012,"SizeReference":null,"EngAbstract":"A series of small boat surveys was conducted in three locations along Sarawak’s coastline with the aims of:

  1. assessing more accurately the species composition, distribution and habitat requirements of coastal cetaceans in the region;
  2. collecting baseline data on dolphin distribution and habitat use; and
  3. facilitating management and conservation efforts.
","EngDescr":"Between June 2008 and September 2009, 56 days of small boat surveys were conducted off the coast of Sarawak, Malaysia with the aim of recording cetacean distribution. These surveys, which focused on the Miri, Bintulu-Similajau and Kuching regions, comprised 173 hours of survey effort and covered 2851 km of pre-determined systematic tracks. Surveys were clustered into three sets of seasonal snapshots: June-July, September-October and March-April. A total of 115 cetacean sightings were made, of which 65 were on-effort and used in analyses of cetacean encounter rates in relation to habitat characteristics. Species observed included (in order of frequency) Irrawaddy dolphins (Orcaella brevirostris), finless porpoises (Neophocaena phocaenoides), Indo-Pacific bottlenose dolphins (Tursiops aduncus) and Indo-Pacific humpback dolphins (Sousa chinensis). \r\n\r\nOne hundred and ten of 115 sightings were made in less than 10 m water depth, highlighting the importance of nearshore coastal habitats for these species. Despite an apparent overlap in habitat, Irrawaddy dolphins showed a statistically significant affiliation with areas of shallower depth and closer proximity to shore and river mouths than finless porpoises or bottlenose dolphins. This preference for nearshore areas renders the species vulnerable to threats such as fisheries by-catch and habitat degradation from coastal development. Irrawaddy dolphins were more frequently encountered in Kuching, while the highest encounter rate for finless porpoises was in the Bintulu-Similajau region. The highest encounter rates in both Kuching and Similajau occurred in areas that are destined for major coastal developments.\r\n\r\nThe results of these surveys should enable managers and researchers to identify areas of key importance for future conservation and research efforts and lay the foundation for more detailed and targeted study both within Sarawak and in other parts of the species’ range.\r\n\r\nDataset credit = The Sarawak Dolphin Project (http://www.ibec.unimas.my/SDP2008/; a project from the Institute of Biodiversity and Environmental Conservation, Universiti Malaysia Sarawak)","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":"Minton, G., C. Peter and A.A. Tuen. 2011. Distribution of small cetaceans in the nearshore waters of Sarawak, East Malaysia. The Raffles Bulletin of Zoology. 59: 91-100","AccessConstraints":null,"UDate":"2012-11-22","CDate":"2012-11-22","CurrencyDate":null,"RevisionDate":null,"DateLastModified":{"date":"2026-06-05 01:37:23.644310","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":"Research: field survey","Progress":"Completed","AccessConstraint":"Attribution-NonCommercial (CC BY-NC)","AccConstrEN":"Attribution-NonCommercial (CC BY-NC)","AccConstrDisplay":"\"Creative This dataset is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.","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":"ISEW, South China Sea","ThesTypID":34,"ThesType":"ASFA Geoterms","Code":null,"Description":null,"OrigThesTerm":"ISEW, South China Sea","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":"Minton","Firstname":"Gianna","Initials":"G.","PerPublicFlag":1,"AdrID":153265,"Email":"gianna.minton@gmail.com","InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":null,"OrigNameLangID":null,"FullOrigName":null,"InsOwnerCNT":2,"PersID":26763,"InsID":12357,"FullInstitute":"Universiti Malaysia Sarawak; Institute of Biodiversity and Environmental Conservation","RoleID":24,"Role":"Contact","OrigName":null,"StandardName":"Institute of Biodiversity and Environmental Conservation","FullAcronym":null,"ORC":null,"ROR":null},{"OrderNr":2,"Surname":null,"Firstname":null,"Initials":null,"PerPublicFlag":null,"AdrID":null,"Email":null,"InsPublicFlag":1,"Acronym":null,"OrigNameLangCode":null,"OrigNameLangID":null,"FullOrigName":null,"InsOwnerCNT":2,"PersID":null,"InsID":12357,"FullInstitute":"Universiti Malaysia Sarawak; Institute of Biodiversity and Environmental Conservation","RoleID":20,"Role":"Data owner","OrigName":null,"StandardName":"Institute of Biodiversity and Environmental Conservation","FullAcronym":null,"ORC":null,"ROR":null}],"taxterms":[{"DasTaxtTypID":1,"DasTaxtType":"Taxonomic coverage","TaxtID":19021,"TaxTerm":"Delphinidae","AphiaID":136980,"DutchTerm":"dolfijnen"},{"DasTaxtTypID":1,"DasTaxtType":"Taxonomic coverage","TaxtID":37081,"TaxTerm":"Neophocaena phocaenoides","AphiaID":254985,"DutchTerm":"Indische bruinvis"},{"DasTaxtTypID":1,"DasTaxtType":"Taxonomic coverage","TaxtID":37438,"TaxTerm":"Sousa chinensis","AphiaID":220226,"DutchTerm":null},{"DasTaxtTypID":1,"DasTaxtType":"Taxonomic coverage","TaxtID":26535,"TaxTerm":"Tursiops Gervais, 1855","AphiaID":137026,"DutchTerm":null}],"frameworks":null,"otherterms":null,"temporal":[{"DasDateID":2891,"StartYear":2008,"EndYear":2009,"StartDay":11,"EndDay":16,"StartDate":"2008-06-11","EndDate":"2009-09-16","DasDate":null,"Resolution":null,"ResolutionNL":null,"Notes":null,"StartMonth0":6,"StartMonth":"June","StartMonthNL":"Juni","EndMonth0":9,"EndMonth":"September","EndMonthNL":"September","Progress":"Completed","ProgressNL":"Afgelopen"}],"geographical":[{"GeoTerm":"South China Sea","DasGeoID":6172,"DasGeoTerm":null,"DasID":3470,"GeotID":3407,"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":4332,"OrigGeoTerm":"South China Sea","DutchTerm":null}],"meastypes":null,"dasthemes":[{"DasThemeID":70,"DasTheme":"Biology > Mammals","DasTheme0":"Mammals","DutchTerm":"Zoogdieren"}],"projects":null,"refs":null,"urls":[{"URL":"https://obis.org/dataset/d90281b7-cce9-49a1-b27a-1226a90b6777","externalID":"d90281b7-cce9-49a1-b27a-1226a90b6777","URLTypeCode":null,"URLType":"Online dataset","URLTypID":19,"downloadURL":null,"FileName":null},{"URL":"seamap.env.duke.edu/dataset/744","externalID":"744","URLTypeCode":null,"URLType":"Dataset information","URLTypID":17,"downloadURL":null,"FileName":null}],"pictures":null,"urlmaps":null,"spatreps":null,"fileformats":null,"resmessage":"","complete":1}