Cetaceans of Southeast Alaska: distribution and seasonal occurrence

In spring 1992, Southeast Alaska, the south side of the Alaskan Peninsula, and the Kodiak Archipelago were surveyed for harbor porpoise (Phocoena phocoena) from the NOAA John N. Cobb using line transect methodology. The shipboard platform was 28.36 m (93 ft) in length with a bridge height of 4.27 m (14 ft). To obtain data on seasonal movements of porpoise, a limited number of transects were made in areas of known porpoise concentrations. When a sighting was made, the following variables were recorded: time, angle, number of reticles to the sighting, radar distance (nm) to the shoreline at the same angle of the sighting, the species, the count of the porpoise seen (best, high, and low), and the animal(s) direction of travel. Search effort was recoded by noting the time and location of the ship at the beginning and end of each transect. Although harbor porpoises, Phocoena phocoena, are known to occur throughout Alaska waters, few estimates of abundance exist. In 1991, the National Marine Mammal Laboratory initiated a 3 year study on Alaska harbor porpoises. The objectives of this program were to: 1) Obtain minimum population estimates in coastal waters using line transect methodology with a coefficient of variation for density estimates of less than 30% for each survey area, and 2) Establish a baseline for detecting changes in abundance through time, for analysis of trends. The ability of the observers to sight porpoise was sensitive to environmental conditions. As expected, when conditions deteriorated the number of porpoises observed declined. This dataset and associated effort data were updated on September 8, 2005. Those who downloaded them before that date should renew them. Dahlheim, M. E., P. A. White, J. M. Waite2009Cetaceans of Southeast Alaska: distribution and seasonal occurrenceJournal of Biogeography36: 410-426http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2699.2008.02007.x/abstract ground condition 19920429 19920512 Complete None planned -136.6015-131.0866758.9888354.81967-136.6015-131.0866758.9888354.81967Alaska NoneVesselsSightingsharbor porpoisePhocoena phocoenaabundancemarine mammal surveysurveymarine mammalcetaceanNoneAlaskaAlaskan PeninsulaKodiak Archipelego Open public unless otherwise noted. See Use Constraints for details. 1. Not to use data obtained from OBIS-SEAMAP in any publication, product, or commercial application without proper attribution to the original data provider(s) and OBIS-SEAMAP unless the datasets are explicitly shown under the CC0 policy. Citations or credits are suggested as attribution. If the data you downloaded come from multiple datasets, a citation or credit to each of the datasets is required. Suggested citation for this dataset: Suggested citation for OBIS-SEAMAP: Halpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach. 2009. OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributions. Oceanography 22(2):104-115 2. To forward the citation of any publication / report that made use of the data / tools provided by OBIS-SEAMAP for inclusion in our list of references. 3. Not to hold OBIS-SEAMAP or the original data providers liable for errors in the data. While we have made every effort to ensure the quality of the database, we cannot guarantee the accuracy of these datasets. 4. The burden for determining fitness for use of the downloaded data for any analyses lies entirely with the user. OBIS-SEAMAP or the original data providers do not support outcomes of your analyses that used the data you downloaded from OBIS-SEAMAP. 5. To consider inclusion of the accompanying transect (effort) dataset if available into the methodology of your analyses. 6. Not to redistribute the data you downloaded from OBIS-SEAMAP through any media without contect from OBIS-SEAMAP and the original data providers unless the datasets are explicitly shown under the CC0 policy. Shapefile Kimberly Goetz; Janice Waite Duke University; National Marine Mammal Laboratory mailing and physical address

n/a; 7600 Sand Point Way N.E.

n/a; Seattle n/a; WA n/a; 98115-6349 n/a; USA n/a; 206-526-6554 ktg4@duke.edu; Janice.Waite@noaa.gov National Marine Mammal Laboratory Integrated Taxonomic Information SystemIntegrated Taxonomic Information Systemhttp://www.itis.usda.gov/Downloaded April, 2004Refer to the contact information of the datasetKingdomAnimalia202423PhylumChordata158852SubphylumVertebrata331030ClassMammalia179913SubclassTheria179916InfraclassEutheria179925OrderCetacea180403SuborderOdontoceti180404FamilyDelphinidae180415GenusLagenorhynchus180441SpeciesLagenorhynchus obliquidens180444GenusOrcinus180468SpeciesOrcinus orca180469FamilyPhocoenidae552307GenusPhocoena180472SpeciesPhocoena phocoena180473GenusPhocoenoides180479SpeciesPhocoenoides dalli180480SuborderMysticeti552298FamilyBalaenopteridae180522GenusMegaptera180529SpeciesMegaptera novaeangliae180530OrderCarnivora180539SuborderCaniformia552303FamilyPhocidae180640GenusPhoca180641SpeciesPhoca vitulina180649 Relational databaseDahlheim, M. E., P. A. White, J. M. Waite2009Cetaceans of Southeast Alaska: distribution and seasonal occurrencevector digital dataJournal of Biogeography36: 410-426http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2699.2008.02007.x/abstractGoetz, K. and J. Waite2004NMML Harbor Porpoise Vessel, SE Alaska, Spring 1992Version 1.7.0vector digital dataOBIS-SEAMAP147https://seamap.env.duke.edu/dataset/147OBIS-SEAMAPhttps://doi.org/10.82144/4fe669fdHalpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach2009OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributionsOceanography22(2):104-115 Ei FujiokaDuke Universitymailing and physical address

LSRC A328

DurhamNCUSA27708efujioka@duke.edu919-613-8021 http://www.nbii.gov/ Biological Data Profile 2025091120250911 All observation records are included.Permissible values for date and time and coordinates were validated by the data provider and the OBIS-SEAMAP data manager. Species identification by the data provider was matched with Integrated Taxonomic Information System.Data were put through the OBIS-SEAMAP data registration steps.20040809 OBIS-SEAMAPNicholas School of Environment, Duke Univ.mailing and physical address

A328, LSRC

DurhamNC27708USA919-613-8021seamap-contact@duke.eduNot to hold OBIS-SEAMAP liable for errors in the data. While we have made every effort to ensure the quality of the database, we cannot guarantee the accuracy of these datasets. Also please refer to Use Constraints.FreeGo to the OBIS-SEAMAP web sitezipzipped shapefilehttp://seamap.env.duke.edu/dataset/147OBIS-SEAMAP Dataset ID 147GCS_WGS_1984Decimal degrees1e-051e-05D_WGS_1984WGS_19846378137.000000298.257224National Marine Mammal LaboratoryBiogeographic dataBiogeographic dataNot applicabledatasetData providerlinenoData providerduplData providerdateData providereventData providertimeData providerdtimeData providerbeaufortData providerweatherData providerportvisData providerstarvisData providershipheadData providerlatdegData providerlatminData providerdlatData providerlondegData providerlonminData providerdlongData providerpdisshorData providerpdismetData providersdisshorData providersdismetData providerpobsData providerrecorderData providersobsData providerspeciesData providercommonData providertsnSpecies ITIS TSNData providerSpecies ITIS TSNscientificData providergroupData providerbowangleData providerreticlesData providernumretData providerdistshorData providerdisshormData providerestdisanData provideredismetData providerraddisData providerperpdisData providerdirtravData providerobservData providerbestData providerhighData providerlowData providerspeedData providercommentsData providerexcludedData providergeomData provideroidUnique ID number (generated by SEAMAP)Data providerUnique ID number (generated by SEAMAP)