Aerial surveys was conducted in 1997 progressing from east to west, to estimate abundance of the Southeast Alaska (SEA, 9,844 km survey effort), Gulf of Alaska (GOA, 10,127 km survey effort), and Bering Sea (BS, 7849 km survey effort) harbor porpoise stocks. In addition, 1355 km of survey effort during a Cook Inlet beluga survey were analyzed to add to the coverage for the GOA stock. Data from an independent observer concentrating on the trackline was used to estimate perception bias. Significant differences in g(0) and effective strip width (ESW) were found between the survey conducted in 1997 and the 1998 and 1999 surveys, therefore 1997 was treated separately. In both analyses, g(0) was dependent on visibility reported by observers, and in the 1997 data ESW was dependent as well. The 1997 survey included the inland waters of southeastern Alaska and the eastern Gulf of Alaska from Dixon Entrance to Cape Suckling
A 3-year survey began in 1997 to complete a new abundance estimate by 1999. This survey will also include an abundance estimate for Dalls porpoise (Phocoenoides dalli). Once the 3 years of surveys are completed, the data will be used to estimate annual abundance of harbor porpoise and Dalls porpoise, which is one of the key pieces of information needed to manage marine mammal-fishery interactions, as required under the Marine Mammal Protection Act.
Although the previous harbor porpoise surveys (1991- 1993) used a vessel platform for the inside waters of Southeast Alaska (Dahlheim et al. 1992, 1993, 1994), the current survey was conducted entirely from aircraft.
en
Hobbs, R2004NMML Small Cetacean Aerial Survey 1997http://seamap.env.duke.edu/dataset/115OBIS-SEAMAP115http://seamap.env.duke.edu/dataset/115OBIS-SEAMAP
ground condition
19970528
19970728
None planned
-143.9533
-131.0048
60.133
54.4542
-143.9533
-131.0048
60.133
54.4542
Alaska
NoneAircraftSightingsharbor porpoisesurveyaerial surveycetaceanNoneAlaskaEastern AlaskaGulf of AlaskaDixon EntranceCape Suckling
Open public unless otherwise noted. See Use Constraints for details.
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Suggested citation for this dataset:
Hobbs, R. 2004. NMML Small Cetacean Aerial Survey 1997. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/115) on yyyy-mm-dd.
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
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Shapefile
Roderick Hobbs
National Marine Mammal Laboratory
mailing and physical address
7600 Sand Point Way NE
Seattle
WA
98115-6349
USA
206-526-6278
Rod.Hobbs@noaa.gov
National Marine Mammal Laboratory
Integrated Taxonomic Information System
Integrated Taxonomic Information System
http://www.itis.usda.gov/
Downloaded April, 2004
Refer to the contact information of the dataset
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
Suborder
Mysticeti
Family
Balaenopteridae
Genus
Balaenoptera
Species
Balaenoptera physalus
Ballena de aleta
fin whale
finback whale
rorqual commun
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
cétacés
cetáceo
mammfères marins
baleia
baleines
cetaceans
dauphins
dolphins
golfinho
marine mammals
marsouins
porpoises
whales
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
cétacés
cetáceo
mammfères marins
baleia
baleines
cetaceans
dauphins
dolphins
golfinho
marine mammals
marsouins
porpoises
whales
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
Suborder
Mysticeti
Family
Eschrichtiidae
Genus
Eschrichtius
Species
Eschrichtius robustus
Ballena gris
gray whale
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Carnivora
Suborder
Caniformia
Family
Otariidae
Genus
Eumetopias
Species
Eumetopias jubatus
Steller's sea lion
northern sea lion
steller sea lion
steller sealion
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
Suborder
Odontoceti
Family
Delphinidae
Genus
Lagenorhynchus
Species
Lagenorhynchus obliquidens
Delfín costado blanco
Pacific white-sided dolphin
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
Suborder
Mysticeti
Family
Balaenopteridae
Genus
Megaptera
Species
Megaptera novaeangliae
rorqual à bosse
Ballena jorobada
humpback whale
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
Suborder
Odontoceti
Family
Ziphiidae
Genus
Mesoplodon
beaked whales
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
Suborder
Odontoceti
Family
Delphinidae
Genus
Orcinus
Species
Orcinus orca
épaulard
Orca común
killer whale
orca
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Carnivora
Suborder
Caniformia
Family
Phocidae
Genus
Phoca
Species
Phoca vitulina
Foca común
harbor seal
phoque commun
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
Suborder
Odontoceti
Family
Phocoenidae
Genus
Phocoena
Species
Phocoena phocoena
common porpoise
harbor porpoise
marsouin commun
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
Suborder
Odontoceti
Family
Phocoenidae
Genus
Phocoenoides
Species
Phocoenoides dalli
Dall's porpoise
Marsopa de Dall
True's porpoise
Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Mammalia
Subclass
Theria
Infraclass
Eutheria
Order
Cetacea
Suborder
Odontoceti
Family
Physeteridae
Genus
Physeter
Species
Physeter catodon
sperm whale
Relational databaseHalpin, 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 distributionsvector digital dataOceanography22(2):104-115http://www.tos.org/oceanography/article/obis-seamap-the-world-data-center-for-marine-mammal-sea-bird-and-sea-turtle
Roderick Hobbs
National Marine Mammal Laboratory
mailing and physical address
A328 LSRC
Durham
NC
27708
USA
919-613-8021
efujioka@duke.edu
Ei FujiokaDuke University
http://www.nbii.gov/
Biological Data Profile
enFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timehttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile2015120420151204
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.20040610
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800seamap115-143.9533-131.004860.13354.45421-143.9533-131.004860.13354.45421ISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetOBIS-SEAMAP Dataset ID 1150.3430.343OBIS-SEAMAPNicholas School of Environment, Duke Univ.mailing and physical addressA328 LSRCDurhamNC27708USA919-613-8021seamap-contact@duke.edu002file://\\BRYCE\C\Fujioka\OBIS-SEAMAP\GIS\OBIS_SHAPE\seamap115.shpLocal Area Network0.343ShapefileVectorSimplePointFALSE602FALSEFALSEEntity point602GCS_WGS_1984Decimal degrees1e-061e-06D_WGS_1984WGS_19846378137.000000298.257224GCS_WGS_1984602Biogeographic dataBiogeographic dataNot applicabledateDateData provider5/28/19977/28/1997timeTimeData provider10:06:0119:58:02latitudeLatitude in decimal degreesData providerLatitude in decimal degreeslongitudeLongitude in decimal degreesData providerLongitude in decimal degreescountThe number of animalsData providerThe number of animalsspeciesSpecies codeData providerSpecies codegeomGeometry field added by OBIS-SEAMAPData providerGeometry field added by OBIS-SEAMAPoidUnique ID number (generated by OBIS-SEAMAP)Data providerUnique ID number (generated by OBIS-SEAMAP)National Marine Mammal Laboratory2006031514031700200603151403170020060315