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Short Citation:
Alaska Fisheries Science Center, 2024: AFSC/REFM: Bomb-produced age validation study, https://www.fisheries.noaa.gov/inport/item/21678.

Item Identification

Title: AFSC/REFM: Bomb-produced age validation study
Short Name: AFSC/REFM: Bomb-produced age validation study
Status: In Work
Publication Date: 2015-10
Abstract:

Fish age validation with bomb-produced radiocarbon (14C) requires a known-age Delta14C reference chronology

spanning the era of a marine increase in bomb-produced 14C (1950s to 1960s). Concordance between otolith Delta14C

in a validation sample and the reference chronology indicates accurate test ages. Here we compare a new Delta14C

reference chronology from the eastern Bering Sea and a previously established reference from the Gulf of Alaska

with otolith Delta14C in two validation species, eastern Bering Sea yellowfin sole (Limanda aspera)

and Gulf of Alaska northern rockfish (Sebastes polyspinis). Our goals were twofold: to validate

the age determination methods for northern rockfish and yellowfin sole using comparisons within oceanic basins,

and to explore the outcome of making naive comparisons of these validation data sets to reference chronologies

across oceanic basins. We present a information-theoretic approach to hypothesis testing and

use Bayesian data analysis with Markov Chain Monte Carlo simulation as a probabilistic framework

to quantitatively estimate age determination bias and its uncertainty. Based on within-basin comparisons

we concluded that estimated ages for eastern Bering Sea yellowfin sole and Gulf of Alaska northern rockfish

were accurate. We further concluded that there were important differences in otolith 14C uptake between fish

from the two ocean basins.

Purpose:

The purpose of this data set is to use bomb-produced 14C to confirm the accuracy of northern rockfish and yellowfin sole ages estimated from otolith growth-zones.

Notes:

Loaded by FGDC Metadata Uploader, batch 7217, 10-07-2015 11:53

The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export:

- Taxonomy (FGDC:taxonomy)

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
biota
ISO 19115 Topic Category
oceans
UNCONTROLLED
None age validation
None Bayesian data analysis
None Bomb-produced 14C
None break-and-burn age
None fish age determination
None Markov Chain Monte Carlo simultion
None otolith
None otolith growth zone
None reference chronology

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None Bering Sea
None Gulf of Alaska

Physical Location

Organization: Alaska Fisheries Science Center
City: Seattle
State/Province: WA
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: Table (digital)
Data Set Credit: The samples used in this study were collected by the Research Assessment and Conservation Engineering Division (RACE) on survey cruises or by the Fisheries Monitoring and Analysis Division (FMA) on commercial fishing boats

Support Roles

Data Steward

CC ID: 234291
Date Effective From: 2015-10-19
Date Effective To:
Contact (Person): Kastelle, Craig
Email Address: craig.kastelle@noaa.gov

Distributor

CC ID: 247201
Date Effective From: 2015
Date Effective To:
Contact (Organization): National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD)
Address: NOAA/NESDIS E/OC SSMC3, 4th Floor, 1351 East-West Highway
Silver Spring, MD 20910-3282
Phone: (301) 713-3277

Metadata Contact

CC ID: 229694
Date Effective From: 2015-10-07
Date Effective To:
Contact (Person): MC, Metadata Coordinators
Email Address: AFSC.metadata@noaa.gov

Originator

CC ID: 229696
Date Effective From: 2015-10-07
Date Effective To:
Contact (Person): Kastelle, Craig
Email Address: craig.kastelle@noaa.gov

Originator

CC ID: 229697
Date Effective From: 2015-10-07
Date Effective To:
Contact (Organization): Alaska Fisheries Science Center (AFSC)
Address: 7600 Sand Point Way N.E., Building 4
Seattle, WA 98115
USA
Email Address: afsc.webmaster@noaa.gov
Phone: (206) 526-4000
Fax: (206) 526-4004
URL: https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center
Business Hours: 0700-1700 Pacific Time

Point of Contact

CC ID: 229695
Date Effective From: 2015-10-07
Date Effective To:
Contact (Person): Kastelle, Craig
Email Address: craig.kastelle@noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 229693
W° Bound: -180
E° Bound: -150
N° Bound: 60
S° Bound: 52
Description

Gulf of Alaska

Extent Group 1 / Time Frame 1

CC ID: 229692
Time Frame Type: Range
Start: 1987
End: 2004

Access Information

Security Class: Unclassified
Data Access Procedure:

na

Data Access Constraints:

There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.

Data 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.

Distribution Information

Distribution 1

CC ID: 234292
Download URL: http://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0134853
Distributor:

URLs

URL 1

CC ID: 229699
URL: http://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0134853
URL Type:
Online Resource

Technical Environment

Description:

Excel

Data Quality

Accuracy:

Data from RACE is proofed by normal protocols routinely used on survey data. Data generated by the Age and Growth program data (age estimates and associated codes) is proofed for typing errors, tested for precision with a 20% replicate, and accuracy is evaluated in comparisons of fish size vs. age.

The Final ages were evaluated for error by the Age (confirmation by reader A or L). Radiocarbon values are checked for accuracy by comparing two different sets of calculations, one by WOHI, NAOAMS, and one by Craig Kastelle at AFSC.

Completeness Report:

There were no samples from 1997 to 2003.

Conceptual Consistency:

spot checked

Quality Control Procedures Employed:

Data from RACE is proofed by normal protocols routinely used on survey data. Data generated by the Age and Growth program data (age estimates and associated codes) is proofed for typing errors, tested for precision with a 20% replicate, and accuracy is evaluated in comparisons of fish size vs. age. The Final ages were evaluated for error by the Age (confirmation by reader A or L). Radiocarbon values are checked for accuracy by comparing two different sets of calculations, one by WOHI, NAOAMS, and one by Craig Kastelle at AFSC.

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: No
If Distributor (Data Hosting Service) is Needed, Please Indicate: no
Approximate Delay Between Data Collection and Dissemination: unknown
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed:

NA

Actual or Planned Long-Term Data Archive Location: Other
If World Data Center or Other, Specify: NCEI
Approximate Delay Between Data Collection and Archiving: unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

NA

Lineage

Process Steps

Process Step 1

CC ID: 229702
Description:

See methods in FGDC metadata.

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity 2nd csv file
Entity csv file

Catalog Details

Catalog Item ID: 21678
GUID: gov.noaa.nmfs.inport:21678
Metadata Record Created By: Angie Greig
Metadata Record Created: 2014-04-21 12:05+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2024-01-15 12:08+0000
Metadata Record Published: 2016-04-28
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2016-04-28
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2017-04-28