gov.noaa.nmfs.inport:26374 eng UTF8 dataset CSV Files Alaska Fisheries Science Center 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 0700-1700 Pacific Time resourceProvider Vance, Tiffany C tiffany.c.vance@noaa.gov email 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) Obsolete - AFSC/RACE/EcoFOCI - Otolith measurements and analyses performed in support of FOCI assessment surveys and ecosystem observations in the Bering, Beaufort, and Chukchi Seas and the Gulf of Alaska. 1995 - Present Obsolete - EcoFOCI Otolith measurements and analyses in the Bering, Beaufort, and Chukchi Seas and the Gulf of Alaska. 1995 - Present 2015 publication NOAA/NMFS/EDM 26374 https://www.fisheries.noaa.gov/inport/item/26374 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Dougherty, Annette annette.dougherty@noaa.gov email originator tableDigital Otolith data are collected to measure age and growth of larval pollock. They are used to determine whether growth rate, hatch data and/or temperature influence fish size. The otolith data sets were constructed to allow researchers to compare intra- and inter-annual comparisons in age and growth data of larval walleye pollock in the Gulf of Alaska. This data was collected in conjunction with physical oceanographic data such as temperature and salinity underDevelopment Dougherty, Annette annette.dougherty@noaa.gov email pointOfContact Dougherty, Annette annette.dougherty@noaa.gov custodian annually Obsolete theme PARR Exclusion biological oceanography growth larval fish otolith theme Bering Sea Gulf of Alaska place 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 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Recruitment Processes Program project InPort otherRestrictions Cite As: Alaska Fisheries Science Center, [Date of Access]: Obsolete - AFSC/RACE/EcoFOCI - Otolith measurements and analyses performed in support of FOCI assessment surveys and ecosystem observations in the Bering, Beaufort, and Chukchi Seas and the Gulf of Alaska. 1995 - Present [Data Date Range], https://www.fisheries.noaa.gov/inport/item/26374. 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: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Data will reside at the Alaska Fisheries Science Center. otherRestrictions Use Constraints: 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. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 26374 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/26374.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 oceans Data are stored in .csv files. 170 -130 50 65 Gulf of Alaska samples collected in alternate odd years. Bering Sea samples collected in alternate even years. Gulf of Alaska annually prior to 2011. | Currentness: Publication Date 1995 Otolith age data is reported in days, not years. Haul date is reported in Julian days. Temperature and salinity data is available in 1 meter depth intervals.|Larval walleye pollock were collected from three areas of interest in the Gulf of Alaska: Shumagin Islands, Sutwik Island, and Shelikof Strait during the late larval surveys conducted from mid-May to early June. All stations were 10 km apart. Larvae were sampled using a 60-cm bongo frame equipped with 505-um mesh nets and codends. The nets were towed to a maximum depth of 100 m, or in shallow areas 10 m off bottom. A Sea-Bird Electronics SBE-19 SEACAT profiler CTD was attached on the wire above the bongo frame to acquire in situ environmental data. Larvae were quickly sorted from the net 2 codend and preserved in 95% ethanol for otolith analysis. The contents of the other codend were preserved in 1.8 % buffered formaldehyde for quantitative sorting of all larval fish species. All formaldehyde-preserved larvae were enumerated, and their SL measured (±0.1 mm) with a dissection microscope. Up to 50-100 larvae preserved in ethanol from each area/year were selected to represent the full size range of fish occurring in each study area of interest. The standard length of larvae used for otolith analysis was corrected for shrinkage according to Porter et al. (2001). Sagitta otoliths were dissected from the fish and mounted in clear nail polish for age reading at 1,0000X magnification using a Zeiss Axioskop compound microscope. Age and length data were used to calculate linear growth equations and hatch date distributions. Dougherty, A., Bailey, K., Vance, T., and Cheng, W. 2012. Underlying causes of habitat-associated differences in size of age-0 walleye pollock (Theragra chalcogramma) in the Gulf of Alaska. Marine Biology, 159, 1733–1744.</gco:CharacterString> Dougherty, Annette annette.dougherty@noaa.gov distributor https://www.fisheries.noaa.gov/inport/item/26374 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information dataset Representativeness To best of current science Accuracy NA Analytical Accuracy NA Quantitation Limits NA Bias NA Comparability NA Completeness Measure Contains data that has been through the QA/QC process. Some sample have not been examined but are preserved and stored for future studies. Precision NA Analytical Precision NA Field Precision NA Sensitivity NA Detection Limit NA Completeness Report Samples selected and analyzed for specific studies. Not all available samples have been analyzed. Conceptual Consistency NA Larval walleye pollock were collected from three areas of interest in the GOA: Shumagin Islands, Sutwik Island, and Shelikof Strait during the late larval surveys conducted within the last 2 weeks in May 2000 and 2001, but as late as early June in 2000 in Shelikof Strait (Fig. 1). Whenever possible, the same stations from 2000 to 2001 were selected for otolith analyses. All stations were 18.5 km apart. Larvae were sampled with a 60-cm bongo frame equipped with 505-lm mesh nets and codends. The nets were towed to a maximum depth of 100 m, or in shallow areas 10 m off bottom. A Sea-Bird Electronics1 SBE-19 SEACAT profiler CTD was attached on the wire above the bongo frame to acquire in situ environmental data. Larvae were quickly sorted from one of the codends and preserved in 95 % ethanol for otolith analysis. The contents of the other codend were preserved in 1.8 % buffered formaldehyde for quantitative sorting of all larvae. All formaldehyde-preserved larvae were removed, enumerated, and their SL measured (±0.1 mm) with a dissection microscope. Up to 50 larvae preserved in ethanol from each area/year were selected to represent the full size range of fish occurring in each area. The Standard Length of larvae used for otolith analysis was corrected for shrinkage according to Porter et al. (2001). Sagitta otoliths were dissected from the fish and mounted in clear nail polish for age reading at 1,0009 magnification using a Zeiss Axioskop compound microscope. Age and length data were used to calculate linear growth equations.|Annette - can you add this?|||Dougherty, A., Bailey, K., Vance, T., and Cheng, W. 2012. Underlying causes of habitat-associated differences in size of age-0 walleye pollock (Theragra chalcogramma) in the Gulf of Alaska. Marine Biology, 159, 1733–1744 otherRestrictions otherRestrictions Access Constraints: None | Use Constraints: None