gov.noaa.nmfs.inport:17231
eng
UTF8
dataset
Database
Alaska Fisheries Science Center
7600 Sand Point Way N.E., Building 4
Seattle
WA
98115
USA
http://www.afsc.noaa.gov
WWW:LINK-1.0-http--link
Website
Website for this organization
information
0700-1700 Pacific Time
resourceProvider
MC, Metadata Coordinators
AFSC.metadata@noaa.gov
pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
AFSC/ABL: Gulf of Alaska Diel Trawl Survey, 2005-2006
AFSC/ABL: Gulf of Alaska Diel Trawl Survey, 2005-2006
publication
NOAA/NMFS/EDM
17231
https://www.fisheries.noaa.gov/inport/item/17231
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
Orsi, Joe
joe.orsi@noaa.gov
originator
Fergusson, Emily A
907-789-6613
17109 Pt Lena Loop Road
Juneau
AL
emily.fergusson@noaa.gov
originator
Echave, Katy
katy.echave@noaa.gov
originator
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.
This dataset contains data from the 2005 & 2006 Medeia Gulf of Alaska surveys
completed
Orsi, Joe
joe.orsi@noaa.gov
pointOfContact
Orsi, Joe
joe.orsi@noaa.gov
custodian
notPlanned
Pacific ocean perch
Sebastes
rockfish
sebastes alutus
theme
ITIS
Alaska
Gulf of Alaska
Southeast Alaska
place
Geographic Names Information System
diel
distribution
epipelagic
pelagic
theme
DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2017-04-24
publication
8.5
Auke Bay Laboratories
project
InPort
otherRestrictions
Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/ABL: Gulf of Alaska Diel Trawl Survey, 2005-2006 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/17231.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
otherRestrictions
Access Constraints: Contact the Point of Contact for data request form.
otherRestrictions
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.
otherRestrictions
Distribution Liability: The user is responsible for the results of any application of this data for other than its intended purpose.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
17231
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/17231.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
eng; US
biota
Microsoft Access
-137.893
-134.986
57.44538
58.35035
Gulf of Alaska
| Currentness: Ground Condition
2005
2006
false
eng
false
Catch
2016-05-05
publication
Coded-wire Tags
2016-05-05
publication
Fish Codes
2016-05-05
publication
FMB
2016-05-05
publication
Haul
2016-05-05
publication
Lab Processing
2016-05-05
publication
Onboard analysis (fish)
2016-05-05
publication
Onboard analysis (stomach)
2016-05-05
publication
Paste Errors
2016-05-05
publication
Rank taxa names
2016-05-05
publication
Station
2016-05-05
publication
stomach prey categories
2016-05-05
publication
Orsi, Joe
joe.orsi@noaa.gov
distributor
https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/ABL/Gulf%20of%20Alaska%20Diel%20Trawl%20Survey%2C%202005-2006_ID_17231.csv
WWW:LINK-1.0-http--link
https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/ABL/Gulf%20of%20Alaska%20Diel%20Trawl%20Survey%2C%202005-2006_ID_17231.csv
NCEI to be determined
Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/14/2021. Contact: Daniel.woodrich@noaa.gov
download
dataset
Completeness Report
The 2006 data has been entered into the database but has not been proof read.
Conceptual Consistency
None
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.
Contact POC for methodology