AFSC/REFM: Survey groundfish ages in Alaska 1980-2015

Metadata:

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Identification_Information:

Citation:
Citation_Information:
Originator: Age and Growth Program
Originator: Groundfish Assessment
Originator: Midwater Assessment and Conservation Engineering
Originator: Alaska Fisheries Science Center
Publication_Date: 201605
Title:
AFSC/REFM: Survey groundfish ages in Alaska 1980-2015
Geospatial_Data_Presentation_Form: tabular digital data
Publication_Information:
Publisher: Alaska Fisheries Science Center

Online_Linkage: http://www.afsc.noaa.gov/REFM/Age/dynamic_maps/agemap.html
Description:

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Abstract:
The Age and Growth Program ages otiliths from various sources. This collection is from the RACE survey dataset where specimens were collected during groundfish trawl and acoustic surveys
Purpose:
The Age and Growth Program is a service organization that provides age data that contributes to our basic understanding of a species whether it is in the context of sustainable fisheries, species conservation, or species ecology. The program is primarily focused on age data for age structured modeling of exploited fish populations.

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Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1980
Ending_Date: 2015
Currentness_Reference:
ground condition

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Status:
Progress: in work
Maintenance_and_Update_Frequency: annually

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Spatial_Domain:
Description_of_Geographic_Extent:
Alaska shelf.
Bounding_Coordinates:
West_Bounding_Coordinate: 161.0
East_Bounding_Coordinate: -128.0
North_Bounding_Coordinate: 65.4
South_Bounding_Coordinate: 50.0

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Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO19115
Theme_Keyword: Biota
Theme_Keyword: Oceans
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: age
Theme_Keyword: growth
Theme_Keyword: otolith
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Alaska
Place_Keyword: Aleutian Islands
Place_Keyword: Bering Sea
Place_Keyword: Gulf of Alaska

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Taxonomy:
Keywords/Taxon:
Taxonomic_Keyword_Thesaurus:
none
Taxonomic_Keywords: groundfish
Taxonomic_Classification:
Taxon_Rank_Name: Kingdom
Taxon_Rank_Value: Animalia
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Pleuronectes quadrituberculatus
Applicable_Common_Name: Alaska plaice
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Bathyraja parmifera
Applicable_Common_Name: Alaska skate
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Boreogadus saida
Applicable_Common_Name: Arctic cod
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Pleurogrammus monopterygius
Applicable_Common_Name: Atka mackerel
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Hippoglossoides robustus
Applicable_Common_Name: Bering flounder
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Microstomus pacificus
Applicable_Common_Name: Dover sole
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Reinhardtius hippoglossoides
Applicable_Common_Name: Greenland turbot
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Atheresthes evermanni
Applicable_Common_Name: Kamchatka flounder
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Gadus macrocephalus
Applicable_Common_Name: Pacific cod
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Merluccius productus
Applicable_Common_Name: Pacific hake
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Hippoglossus stenolepis
Applicable_Common_Name: Pacific halibut
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes alutus
Applicable_Common_Name: Pacific ocean perch
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Atheresthes stomias
Applicable_Common_Name: arrowtooth flounder
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Raja binoculata
Applicable_Common_Name: big skate
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Hemitripterus bolini
Applicable_Common_Name: bigmouth sculpin
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes melanostictus
Applicable_Common_Name: blackspotted rockfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes ciliatus
Applicable_Common_Name: dark rockfish
Taxonomic_Classification:
Taxon_Rank_Name: GENUS
Taxon_Rank_Value: NA
Applicable_Common_Name: dusky and dark rockfishes unid.
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes variabilis
Applicable_Common_Name: dusky rockfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Hippoglossoides elassodon
Applicable_Common_Name: flathead sole
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Albatrossia pectoralis
Applicable_Common_Name: giant grenadier
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Myoxocephalus polyacanthocephalus
Applicable_Common_Name: great sculpin
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes variegatus
Applicable_Common_Name: harlequin rockfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Limanda proboscidea
Applicable_Common_Name: longhead dab
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Raja rhina
Applicable_Common_Name: longnose skate
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Lepidopsetta polyxystra
Applicable_Common_Name: northern rock sole
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes polyspinis
Applicable_Common_Name: northern rockfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Myoxocephalus jaok
Applicable_Common_Name: plain sculpin
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Zaprora silenus
Applicable_Common_Name: prowfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes proriger
Applicable_Common_Name: redstripe rockfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Glyptocephalus zachirus
Applicable_Common_Name: rex sole
Taxonomic_Classification:
Taxon_Rank_Name: GENUS
Taxon_Rank_Value: Lepidopsetta sp.
Applicable_Common_Name: rock sole unid.
Taxonomic_Classification:
Taxon_Rank_Name: GENUS
Taxon_Rank_Value: NA
Applicable_Common_Name: rougheye and blackspotted rockfish unid.
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes aleutianus
Applicable_Common_Name: rougheye rockfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Anoplopoma fimbria
Applicable_Common_Name: sablefish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Eleginus gracilis
Applicable_Common_Name: saffron cod
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes zacentrus
Applicable_Common_Name: sharpchin rockfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes borealis
Applicable_Common_Name: shortraker rockfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Sebastes brevispinis
Applicable_Common_Name: silvergray rockfish
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Lepidopsetta bilineata
Applicable_Common_Name: southern rock sole
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Gadus chalcogrammus
Applicable_Common_Name: walleye pollock
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Myoxocephalus verrucosus
Applicable_Common_Name: warty sculpin
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Hemilepidotus jordani
Applicable_Common_Name: yellow Irish lord
Taxonomic_Classification:
Taxon_Rank_Name: SPECIES
Taxon_Rank_Value: Limanda aspera
Applicable_Common_Name: yellowfin sole

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Access_Constraints: There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.
Use_Constraints:
User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested.

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Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: National Oceanic and Atmospheric Administration (NOAA) Alaska Fisheries Science Center (AFSC) Resource Ecology and Fisheries Management Division (REFM)
Contact_Address:
Address_Type: mailing and physical
Address: 7600 Sand Point Way N.E., Bldg. 4
City: Seattle
State_or_Province: WA
Postal_Code: 98115
Country: USA
Contact_Voice_Telephone: not available
Contact_Electronic_Mail_Address: Thomas.Helser@noaa.gov
Browse_Graphic:
Browse_Graphic_File_Name: agemap.png
Browse_Graphic_File_Description:
map of collection locations
Browse_Graphic_File_Type: png
Native_Data_Set_Environment:
Oracle

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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Quality control is provided through 20% repeated readings by experienced age readers. Ageing methodologies are validated using known age fish, tagged fish, marginal increment studies, OTC marked fish, and radiometric studies.</
Logical_Consistency_Report:
Extensive error checking has been done. See RACEBASE metadata.
Completeness_Report:
Species type and number vary over time as per requests. Some collections are opportunistic but most are collected to determine age at each length. Prior to 1985 weight information was not standard.

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Lineage:
Methodology:
Methodology_Type: lab
Methodology_Description:
quality control
Methodology_Citation:
Citation_Information:
Originator: Kimura and Anderl
Publication_Date: 2005
Title:
Quality control ofage data at the Alaska Fisheries Science Center
Geospatial_Data_Presentation_Form: journal article

Online_Linkage: http://www.afsc.noaa.gov/REFM/Age/docs/MF04141.pdf
Methodology:
Methodology_Type: lab
Methodology_Description:
various
Methodology_Citation:
Citation_Information:
Originator: Age and Growth Program
Publication_Date: 2010
Title:
Age and Growth Program
Geospatial_Data_Presentation_Form: web site

Online_Linkage: http://www.afsc.noaa.gov/REFM/Age/Default.htm
Process_Step:
Process_Description:
NA
Process_Date: Unknown

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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: AGESURVEYDATA
Entity_Type_Definition:
Subset of Alaska RACE survey data groundfish specimen data which contains age data.
Entity_Type_Definition_Source:
AFSC
Attribute:
Attribute_Label: YEAR
Attribute_Definition:
Year specimen was collected.
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1980
Range_Domain_Maximum: 2015
Attribute:
Attribute_Label: START_TIME
Attribute_Definition:
Date. This is the date and time at the beginning of the haul; For groundfish trawl data, this is the on-bottom time which is determined after we have looked at the bottom-contact sensor and net-mensuration plots. For hydroacoustic data, start_time is when the first fish is captured (displayed on the net sounder) or when the net is at target depth and location.
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 198002200000
Range_Domain_Maximum: 201508111515
Attribute:
Attribute_Label: LATITUDE
Attribute_Definition:
The latitude (decimal degrees) at the start of the haul
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 50.1255
Range_Domain_Maximum: 73.00127
Attribute:
Attribute_Label: LONGITUDE
Attribute_Definition:
The longitude (decimal degrees) at the start of the haul.
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -179.98167
Range_Domain_Maximum: 179.9866
Attribute:
Attribute_Label: SPECIMENID
Attribute_Definition:
(0001 to 9999; Each individual examined must have a number assigned to it that is unique within each haul. However, specimen numbers may be repeated between hauls
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 46140
Attribute:
Attribute_Label: LENGTH
Attribute_Definition:
millimeters (m)
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 40
Range_Domain_Maximum: 2050
Attribute:
Attribute_Label: SEX
Attribute_Definition:
Valid Values: 1=male, 2=female, 3=undetermined
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 3
Attribute:
Attribute_Label: WEIGHT
Attribute_Definition:
grams (g)
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 50000
Attribute:
Attribute_Label: AGE
Attribute_Definition:
Whole Numbers and null. This value represents the age of fish in years
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -1
Range_Domain_Maximum: 146
Attribute:
Attribute_Label: SPECIES_CODE
Attribute_Definition:
Domain: RACE Species Codebook; http://www.afsc.noaa.gov/RACE/groundfish/species_codebook.pdf
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 420
Range_Domain_Maximum: 30576
Attribute:
Attribute_Label: COMMON_NAME
Attribute_Definition:
The common name of the marine organism associated with the SCIENTIFIC_NAME
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Unrepresentable_Domain:
unknown
Attribute:
Attribute_Label: SPECIES_NAME
Attribute_Definition:
The scientific name of the organism associated with the COMMON_NAME.
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Unrepresentable_Domain:
unknown
Attribute:
Attribute_Label: SURVEY_NAME
Attribute_Definition:
Text. Description of the survey
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Unrepresentable_Domain:
unknown
Attribute:
Attribute_Label: VESSEL
Attribute_Definition:
Domain: RACE ADP Codebook: Vessel Codes; http://www.afsc.noaa.gov/RACE/groundfish/adp_codebook.pdf
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 793
Attribute:
Attribute_Label: CRUISE
Attribute_Definition:
This is a six-digit number identifying the Cruise number. It is of the form: YYYY99 (where YYYY = year of the cruise; 99 = 2-digit number and is sequential; 01 denotes the first cruise that vessel made in this year, 02 is the second, etc.)
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 198001
Range_Domain_Maximum: 201501
Attribute:
Attribute_Label: HAUL
Attribute_Definition:
This number uniquely identifies a haul within a cruise. It is a sequential number, in chronological order of occurrence.
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 536
Attribute:
Attribute_Label: REGION
Attribute_Definition:
NA
Attribute_Definition_Source:
AFSC
Attribute_Domain_Values:
Unrepresentable_Domain:
unknown

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Metadata_Reference_Information:
Metadata_Date: 20160504
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: National Oceanic and Atmospheric Administration (NOAA) Alaska Fisheries Science Center (AFSC) Resource Ecology and Fisheries Management Division (REFM)
Contact_Address:
Address_Type: mailing and physical
Address: 7600 Sand Point Way N.E., Bldg. 4
City: Seattle
State_or_Province: WA
Postal_Code: 98115
Country: USA
Contact_Voice_Telephone: not available
Contact_Electronic_Mail_Address: AFSC.metadata@noaa.gov
Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001.1-1999