Counts of Alaska Steller sea lion adult and juvenile (non-pup) conducted on rookeries and haul-outs in Alaska Aleutian Islands, Bering Sea, and others from 1904-01-01 to 2015-07-18 (NCEI Accession 0128190)

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This dataset contains counts of adult and juvenile (non-pup) Steller sea lions on rookeries and haul-outs in Alaska made between 1904 and 2015. Non-pup counts have been conducted throughout the year. Breeding season (June-mid July) non-pup counts are used for population trend analysis, while counts at other times are used for analyses of distribution and for other purposes. Non-pups are counted from the ground (by walking along the rookery), from cliff-side overlooks, and from aerial imagery (oblique and vertical orientation). Non-pup counts represent only a fraction of the total number of animals that may use a site. Sea lions haulout less frequently in winter than in summer; thus, winter counts represent a smaller fraction of the total population than summer counts.
  • Cite as: Fritz, Lowell; Sweeney, Kathryn; Lynn, Morgan; Gelatt, Thomas; Gilpatrick, James; Towell, Rodney (2015). Counts of Alaska Steller sea lion adult and juvenile (non-pup) conducted on rookeries and haul-outs in Alaska Aleutian Islands, Bering Sea, and others from 1904-01-01 to 2015-07-18 (NCEI Accession 0128190). Version 2.4. NOAA National Centers for Environmental Information. Dataset. doi:10.7289/V54F1NP1 [access date]
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  • Originator data format
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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 1904-01-01 to 2015-07-18
Spatial Bounding Box Coordinates
N: 63
S: 52
E: -131
W: 172
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2015-08-13
  • revision: 2016-06-07
Edition 2.4
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
http://www.afsc.noaa.gov/Publications/AFSC-TM/NOAA-TM-AFSC-251.pdf
http://www.afsc.noaa.gov/Publications/AFSC-TM/NOAA-TM-AFSC-321.pdf

The file "SSLnonpupcounts2016.csv" contains counts from Alaska of non-pup (adult and juvenile) Steller sea lions in the NMML database. The counts were made between 1904 and 2015. This file includes counts obtained during breeding season aerial surveys, as well as counts obtained during winter aerial surveys, boat surveys, cliff counts, and other miscellaneous counts.

The non-pup count data file (SSLnonpupcounts2016.csv) is in ASCII text format and fields are comma-delimited (.csv). It contains the following fields:

SITENAME

REGIONNUMB:
4 = British Columbia, Canada
5 = Southeast Alaska,
6 = Eastern Gulf of Alaska
7 = Central Gulf of Alaska
8 = Western Gulf of Alaska
9 = Eastern Aleutian Islands
10 = Central Aleutian Islands
11 = Western Aleutian Islands
12 = Bering Sea

TRENDSITE 0 - not a trend site, 1 - is a trend site

ROOKERY 0 - not a rookery, 1 - is a rookery, 2 - special case, rookery but not a trend rookery.

MONTH 1-12, 99 is unknown/missing

DAY 1-31, 99 is unknown/missing
YEAR

COUNT: (Does not include newborn pups during the breeding season)

COUNTTYPE:
1 = aerial photo (35mm) oblique
2 = medium-format (5 inch) vertical aerial photo
3 = aerial photo (digital) vertical
4 = aerial, visual estimate
5 = beach/ground count
6 = viewpoint observations
7 = count from skiff nearshore
8 = count from ship offshore
9 = other (explain in comments)
10 = UAV
99 = unknown or not specified

SOURCE:
1 = NMFS/National Marine Mammal Laboratory
2 = Alaska Department of Fish and Game
3 = Oregon Department of Fish and Wildlife
4 = Washington Department of Fish and Wildlife
5 = NMFS/Southwest Fisheries Science Center
6 = Canada Department of Fisheries and Oceans
7 = other (explain in comments)
99 = unknown or not specified

REPLICATE: R if replicate count (different day) during same survey, N otherwise. If there are replicate counts for a site, all counts for that site are marked R. There are multiple counts at the same site with the same date. These are the raw counts of more than one counter using aerial photos, and in these cases, the replicate field is marked N.

COUNTER: initials of counter (photo, slide, from skiff etc...)

COMMENTS: (Clarification of COUNTTYPE, SOURCE, or COUNT as necessary)
Purpose Counts of Steller sea lions pups, adults, and juveniles are used to monitor trends in the population and used in the development of population models.
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: Fritz, Lowell; Sweeney, Kathryn; Lynn, Morgan; Gelatt, Thomas; Gilpatrick, James; Towell, Rodney (2015). Counts of Alaska Steller sea lion adult and juvenile (non-pup) conducted on rookeries and haul-outs in Alaska Aleutian Islands, Bering Sea, and others from 1904-01-01 to 2015-07-18 (NCEI Accession 0128190). Version 2.4. NOAA National Centers for Environmental Information. Dataset. doi:10.7289/V54F1NP1 [access date]
Authors
  • Fritz, Lowell
  • Sweeney, Kathryn
  • Lynn, Morgan
  • Gelatt, Thomas
  • Gilpatrick, James
  • Towell, Rodney
Contributors
Resource Providers
Publishers
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science and Services Keywords
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS
ORIGINATOR KEY WORD THESAURUS
  • Aerial survey
  • Eumetopias jubatus
  • Steller sea lion
  • otariid
  • pinniped
  • population
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/AFSC/NMML > National Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords
  • Aircraft > AIRCRAFT
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
  • In Situ/Laboratory Instruments > Photon/Optical Detectors > VISUAL OBSERVATIONS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
  • OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA
  • OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA
ORIGINATOR KEY WORD THESAURUS
  • Alaska
  • Aleutian Islands
  • British Columbia
  • Prince William Sound
Project keywords NODC PROJECT NAMES THESAURUS
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Fritz, Lowell; Sweeney, Kathryn; Lynn, Morgan; Gelatt, Thomas; Gilpatrick, James; Towell, Rodney (2015). Counts of Alaska Steller sea lion adult and juvenile (non-pup) conducted on rookeries and haul-outs in Alaska Aleutian Islands, Bering Sea, and others from 1904-01-01 to 2015-07-18 (NCEI Accession 0128190). Version 2.4. NOAA National Centers for Environmental Information. Dataset. doi:10.7289/V54F1NP1 [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
  • 2015-08-13T12:30:14 - NCEI Accession 0128190 v1.1 was published.
  • 2015-08-18T11:59:09 - NCEI Accession 0128190 was revised and v1.2 was published.
    Rationale: Updates were received for this data set. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
  • 2015-08-18T21:29:13 - NCEI Accession 0128190 was revised and v1.3 was published.
    Rationale: Updates were received for this data set. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
  • 2016-06-07T17:47:11 - NCEI Accession 0128190 was revised and v2.4 was published.
    Rationale: Updates were received for this data set. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
Output Datasets
Acquisition Information (collection)
Instrument
  • biota surveys
  • visual observation
Platform
  • AIRCRAFT
Last Modified: 2018-03-08T01:39:25
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