Shore-based counts of the Eastern North Pacific gray whale stock from central California conducted from 1967-12-18 to 2007-02-22 (NCEI Accession 0138007)

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The National Marine Fisheries Service (NMFS) has conducted shore-based counts of the Eastern North Pacific stock of gray whales (Eschrichtius robustus) 26 years from 1967 to 2008 at Granite Canyon (or nearby at Yankee Point), 13 km south of Carmel, in central California. Convenient access to the Granite Canyon research station (owned by NOAA but operated by the State of California Department of Fish and Game) and the narrowness of the whales' migratory corridor in this area permitted an efficient counting process at this site. All counts were conducted during the 2-month southbound migration (mid-December to late February) rather than the protracted 3-month northbound migration. The routine nature of these counts and the consistency in research protocol lend themselves to inter-annual trend analyses. Research protocol has been based on single observers independently searching for whales and recording data on environmental conditions and the time, location, count, and direction of travel for each sighting. The counting system and observer performance has been tested through paired, independent observational effort; aerial surveys; thermal imagery; radio-tagging of whales; systematic observations through high-powered (25x) binoculars; and teams of observers tracking specific whale pods through the viewing area.
  • Cite as: Rugh, David; Laake, Jeff; Hobbs, Roderick; Jeff Breiwick (2015). Shore-based counts of the Eastern North Pacific gray whale stock from central California conducted from 1967-12-18 to 2007-02-22 (NCEI Accession 0138007). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date]
gov.noaa.nodc:0138007
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Distribution Formats
  • Originator data format
Ordering Instructions Data may be searched and downloaded using online services provided by NCEI using the online resource URLs in this record. Contact NCEI Information Services for custom orders. When requesting data from NCEI, the desired data set may be referred to by the unique package identification number listed in this metadata record.
Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact Information Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Time Period 1967-12-18 to 2007-02-22
Spatial Bounding Box Coordinates
N: 36.5
S: 36.4
E: -121.91
W: -121.94
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2015-11-25
Edition 1.1
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency As needed
Supplemental Information
Submission Package ID: PP7DEL
Purpose Shore-based counts of gray whales have provided the fundamental data used to establish the abundance of the Eastern North Pacific Stock of Gray Whales. These abundance estimates are applied to trends analyses to establish the health of the stock. Results from this study were the basis for removing this stock of whales from the list of Endangered and Threatened Wildlife, the first mammalian species to do so without going extinct. Similarly, results from the shore-based counts are used by the International Whaling Commission to estimate the health of the stock relative to whaling quotas used by the Chukotka Eskimos and Makah Indians.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Rugh, David; Laake, Jeff; Hobbs, Roderick; Jeff Breiwick (2015). Shore-based counts of the Eastern North Pacific gray whale stock from central California conducted from 1967-12-18 to 2007-02-22 (NCEI Accession 0138007). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date]
Cited Authors
  • Rugh, David
  • Laake, Jeff
  • Hobbs, Roderick
  • Jeff Breiwick
Principal Investigators
  • David Rugh
Collaborators
  • Jeff Laake
  • Jeff Breiwick
Contributors
Resource Providers
Points of Contact
  • Roderick Hobbs
Publishers
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords
  • EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND DIRECTION
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS
  • EARTH SCIENCE > OCEANS > OCEAN OPTICS
Originator Keywords
  • abundance
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
  • BINOCULAR > BINOCULAR
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Rugh, David; Laake, Jeff; Hobbs, Roderick; Jeff Breiwick (2015). Shore-based counts of the Eastern North Pacific gray whale stock from central California conducted from 1967-12-18 to 2007-02-22 (NCEI Accession 0138007). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date]
Access Constraints
  • NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • Digital data may be downloaded from NCEI at no charge in most cases. For custom orders of digital data or to obtain a copy of analog materials, please contact NCEI Information Services for information about current fees.
Lineage information for: dataset
Processing Steps
  • 2015-11-25T14:02:03 - NCEI Accession 0138007 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Data Type: ETIME (measured); Units: Decimal hour; Observation Type: in situ; Sampling Instrument: Watch.
Acquisition Information (collection)
Instrument
  • binoculars
Last Modified: 2018-11-01T15:18:20
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