AFSC/ABL: Gulf of Alaska Diel Trawl Survey, 2005-2006
Data Set (DS) | Alaska Fisheries Science Center (AFSC)GUID: gov.noaa.nmfs.inport:17231 | Updated: May 30, 2023 | Published / External
Summary
Short Citation
Alaska Fisheries Science Center, 2024: AFSC/ABL: Gulf of Alaska Diel Trawl Survey, 2005-2006, https://www.fisheries.noaa.gov/inport/item/17231.
Full Citation Examples
Diel epipelagic sampling for juvenile Pacific salmon (Oncorhynchus spp.), rockfish (Sebastes spp.), sablefish (Anoplopoma fimbria), and associated species was conducted in order to identify factors that may affect year-class success of these commercially important species. Sampling occurred in offshore marine habitats of the coastal northeast Pacific Ocean from 10-20 August 2005 and was conducted with a surface trawl fishing the upper 20 m of the water column along transects up to78 km offshore near 58 N. Three habitats were sampled along each transect over a 24-hr period: the continental shelf (<200 m depth), the continental slope (400-750 m depth), and the abyss (>2,000 m depth). A total of 38,747 fish and squid representing 24 species were sampled in 56 trawl hauls. Of the targeted juvenile fish species, a total of 587 salmon, 11 rockfish, and 70 sablefish were captured. Sampling during day (1500-1900) and night (2200-0200) periods indicated that biomass of fish and squid was 2-4 times higher at night at (each?)all habitat types pooled across transects. No distinct patterns between day or night occurrence were noted for juvenile pink salmon (O. gorbuscha), chum salmon (O. keta), sockeye salmon (O. nerka), or coho salmon (O. kisutch), however, juvenile Chinook salmon (O. tshawytscha) were encountered only at night. Catches of juvenile rockfish and juvenile sablefish were quite low in this study, and larger sample sizes of these fish are needed to adequately determine their diel distribution. Diel differences were apparent with forage species such as Pacific herring (Clupea pallasi), capelin (Mallotus villosus), and eulachon (Thaleichthys pacificus) that were almost exclusively sampled at night. The offshore distribution patterns of target species were distinctly different, with the most common occurrences of juvenile salmon over continental shelf habitats, juvenile sablefish over continental shelf and slope habitats, and juvenile rockfish over slope and abyss habitats. Pacific herring, capelin, eulachon, and Pacific sardines (Sardinops sagax) were found over continental shelf habitats, whereas small squid and myctophids occurred primarily at slope and abyssal habitats. The greatest overall catch biomass was of gelatinous species (jellyfish), which was consistently higher than that of all fish and squid combined, usually by an order of magnitude. Individual fish or squid species with highest average weight per haul were pomfret (Brama japonica), adult coho salmon, Humboldt squid (Dosidicus gigas), and blue sharks (Prionace glauca). The occurrence of the latter two warm-water species and Pacific sardines were of interest because this study occurred during an anomalously warm year and the capture of Pacific sardines and Humboldt squid represent northern range extensions for these species. Stomach content analysis of potential predator species of the target species showed that only adult coho salmon were predating on juvenile salmon and sablefish, and only pomfret were predating on juvenile rockfish. Further sampling of the target species is needed in these habitats during more normal environmental conditions to validate these observations.
Distribution Information
-
NCEI to be determined
Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/14/2021. Contact: Daniel.woodrich@noaa.gov
Contact the Point of Contact for data request form.
User must read and fully comprehend the metadata prior to use. Data should not be used beyond the limits of the source scale. Acknowledgement of NOAA, as the source from which these data were obtained, in any publications and/or other representations of these data is suggested.
Controlled Theme Keywords
biota
Child Items
Type | Title |
---|---|
Entity | Catch |
Entity | Coded-wire Tags |
Entity | FMB |
Entity | Fish Codes |
Entity | Haul |
Entity | Lab Processing |
Entity | Onboard analysis (fish) |
Entity | Onboard analysis (stomach) |
Entity | Paste Errors |
Entity | Rank taxa names |
Entity | Station |
Entity | stomach prey categories |
Contact Information
Point of Contact
Joe Orsi
joe.orsi@noaa.gov
Metadata Contact
Metadata Coordinators MC
AFSC.metadata@noaa.gov
Extents
-137.893° W,
-134.986° E,
58.35035° N,
57.44538° S
Gulf of Alaska
2005 - 2006
Item Identification
Title: | AFSC/ABL: Gulf of Alaska Diel Trawl Survey, 2005-2006 |
---|---|
Short Name: | AFSC/ABL: Gulf of Alaska Diel Trawl Survey, 2005-2006 |
Status: | Completed |
Publication Date: | Unknown |
Abstract: |
Diel epipelagic sampling for juvenile Pacific salmon (Oncorhynchus spp.), rockfish (Sebastes spp.), sablefish (Anoplopoma fimbria), and associated species was conducted in order to identify factors that may affect year-class success of these commercially important species. Sampling occurred in offshore marine habitats of the coastal northeast Pacific Ocean from 10-20 August 2005 and was conducted with a surface trawl fishing the upper 20 m of the water column along transects up to78 km offshore near 58 N. Three habitats were sampled along each transect over a 24-hr period: the continental shelf (<200 m depth), the continental slope (400-750 m depth), and the abyss (>2,000 m depth). A total of 38,747 fish and squid representing 24 species were sampled in 56 trawl hauls. Of the targeted juvenile fish species, a total of 587 salmon, 11 rockfish, and 70 sablefish were captured. Sampling during day (1500-1900) and night (2200-0200) periods indicated that biomass of fish and squid was 2-4 times higher at night at (each?)all habitat types pooled across transects. No distinct patterns between day or night occurrence were noted for juvenile pink salmon (O. gorbuscha), chum salmon (O. keta), sockeye salmon (O. nerka), or coho salmon (O. kisutch), however, juvenile Chinook salmon (O. tshawytscha) were encountered only at night. Catches of juvenile rockfish and juvenile sablefish were quite low in this study, and larger sample sizes of these fish are needed to adequately determine their diel distribution. Diel differences were apparent with forage species such as Pacific herring (Clupea pallasi), capelin (Mallotus villosus), and eulachon (Thaleichthys pacificus) that were almost exclusively sampled at night. The offshore distribution patterns of target species were distinctly different, with the most common occurrences of juvenile salmon over continental shelf habitats, juvenile sablefish over continental shelf and slope habitats, and juvenile rockfish over slope and abyss habitats. Pacific herring, capelin, eulachon, and Pacific sardines (Sardinops sagax) were found over continental shelf habitats, whereas small squid and myctophids occurred primarily at slope and abyssal habitats. The greatest overall catch biomass was of gelatinous species (jellyfish), which was consistently higher than that of all fish and squid combined, usually by an order of magnitude. Individual fish or squid species with highest average weight per haul were pomfret (Brama japonica), adult coho salmon, Humboldt squid (Dosidicus gigas), and blue sharks (Prionace glauca). The occurrence of the latter two warm-water species and Pacific sardines were of interest because this study occurred during an anomalously warm year and the capture of Pacific sardines and Humboldt squid represent northern range extensions for these species. Stomach content analysis of potential predator species of the target species showed that only adult coho salmon were predating on juvenile salmon and sablefish, and only pomfret were predating on juvenile rockfish. Further sampling of the target species is needed in these habitats during more normal environmental conditions to validate these observations. |
Purpose: |
This dataset contains data from the 2005 & 2006 Medeia Gulf of Alaska surveys |
Notes: |
Loaded by FGDC Metadata Uploader, batch 7177, 10-05-2015 16:46 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
|
UNCONTROLLED | |
ITIS | Pacific ocean perch |
ITIS | rockfish |
ITIS | Sebastes |
ITIS | sebastes alutus |
None | diel |
None | distribution |
None | epipelagic |
None | pelagic |
Spatial Keywords
Thesaurus | Keyword |
---|---|
UNCONTROLLED | |
Geographic Names Information System | Alaska |
Geographic Names Information System | Gulf of Alaska |
Geographic Names Information System | Southeast Alaska |
Physical Location
Organization: | Auke Bay Laboratories |
---|---|
City: | Juneau |
State/Province: | AK |
Country: | US |
Data Set Information
Data Set Scope Code: | Data Set |
---|---|
Data Set Type: | Database |
Maintenance Frequency: | None Planned |
Data Presentation Form: | maps and data |
Distribution Liability: |
The user is responsible for the results of any application of this data for other than its intended purpose. |
Support Roles
Data Steward
Date Effective From: | 2015-10-05 |
---|---|
Date Effective To: | |
Contact (Person): | Orsi, Joe |
Email Address: | joe.orsi@noaa.gov |
Distributor
Date Effective From: | 2015-10-05 |
---|---|
Date Effective To: | |
Contact (Person): | Orsi, Joe |
Email Address: | joe.orsi@noaa.gov |
Metadata Contact
Date Effective From: | 2015-10-05 |
---|---|
Date Effective To: | |
Contact (Person): | MC, Metadata Coordinators |
Email Address: | AFSC.metadata@noaa.gov |
Originator
Date Effective From: | 2015-10-05 |
---|---|
Date Effective To: | |
Contact (Person): | Orsi, Joe |
Email Address: | joe.orsi@noaa.gov |
Originator
Date Effective From: | 2015-10-05 |
---|---|
Date Effective To: | |
Contact (Person): | Fergusson, Emily A |
Address: |
17109 Pt Lena Loop Road Juneau, AL |
Email Address: | emily.fergusson@noaa.gov |
Phone: | 907-789-6613 |
Originator
Date Effective From: | 2015-10-05 |
---|---|
Date Effective To: | |
Contact (Person): | Echave, Katy |
Email Address: | katy.echave@noaa.gov |
Point of Contact
Date Effective From: | 2015-10-05 |
---|---|
Date Effective To: | |
Contact (Person): | Orsi, Joe |
Email Address: | joe.orsi@noaa.gov |
Extents
Currentness Reference: | Ground Condition |
---|
Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -137.893 | |
---|---|---|
E° Bound: | -134.986 | |
N° Bound: | 58.35035 | |
S° Bound: | 57.44538 | |
Description |
Gulf of Alaska |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2005 |
End: | 2006 |
Access Information
Security Class: | Unclassified |
---|---|
Data Access Procedure: |
N/A |
Data Access Constraints: |
Contact the Point of Contact for data request form. |
Data Use Constraints: |
User must read and fully comprehend the metadata prior to use. Data should not be used beyond the limits of the source scale. Acknowledgement of NOAA, 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
Download URL: | https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/ABL/Gulf%20of%20Alaska%20Diel%20Trawl%20Survey%2C%202005-2006_ID_17231.csv |
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Distributor: | |
Description: |
NCEI to be determined Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/14/2021. Contact: Daniel.woodrich@noaa.gov |
Technical Environment
Description: |
Microsoft Access |
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Data Quality
Completeness Report: |
The 2006 data has been entered into the database but has not been proof read. |
---|---|
Conceptual Consistency: |
None |
Quality Control Procedures Employed: |
Contact the dataset POC for full QA/QC methodology |
Data Management
Have Resources for Management of these Data Been Identified?: | Yes |
---|---|
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: | yes |
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: |
no delay |
Actual or Planned Long-Term Data Archive Location: | To Be Determined |
If To Be Determined, Unable to Archive, or No Archiving Intended, Explain: |
NCEI cite yet to be determined |
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?: |
IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption. |
Lineage
Lineage Statement: |
For methodology see: Orsi, J. A., D. M. Clausen, A. C. Wertheimer, D. L. Courtney, and J. E. Pohl. 2006. Diel Epipelagic Distribution of Juvenile Salmon, Rockfish, Sablefish and Ecological Interactions with Associated Species in Offshore Habitats of the Northeast Pacific Ocean (NPAFC Doc. 956) Auke Bay Lab., Alaska Fish. Sci. Cen., Nat. Mar. Fish. Serv., NOAA, 11305 Glacier Highway, Juneau, AK 99801-8626, USA, 26 p. |
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Process Steps
Process Step 1
Description: |
Contact POC for methodology |
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Child Items
Rubric scores updated every 15m
Type | Title | |
---|---|---|
Entity | Catch | |
Entity | Coded-wire Tags | |
Entity | FMB | |
Entity | Fish Codes | |
Entity | Haul | |
Entity | Lab Processing | |
Entity | Onboard analysis (fish) | |
Entity | Onboard analysis (stomach) | |
Entity | Paste Errors | |
Entity | Rank taxa names | |
Entity | Station | |
Entity | stomach prey categories |
Catalog Details
Catalog Item ID: | 17231 |
---|---|
GUID: | gov.noaa.nmfs.inport:17231 |
Metadata Record Created By: | Doug Turnbull |
Metadata Record Created: | 2012-12-18 14:31+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-05-30 18:10+0000 |
Metadata Record Published: | 2016-05-05 |
Owner Org: | AFSC |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2016-05-05 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2017-05-05 |