gov.noaa.nmfs.inport:28004 eng UTF8 dataset 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 2026-03-04T19:17:17 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) AFSC/RACE/GAP/Nichol: Archival tag depth and temperature data from Atka mackerel AFSC/RACE/GAP/Nichol: Archival tag depth and temperature data from Atka mackerel publication NOAA/NMFS/EDM 28004 https://www.fisheries.noaa.gov/inport/item/28004 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Nichol, Dan dan.nichol@noaa.gov originator Alaska Fisheries Science Center (206) 526-4000 (206) 526-4004 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA afsc.webmaster@noaa.gov https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center WWW:LINK-1.0-http--link Alaska Fisheries Science Center Website AKFSC Home Page information 0700-1700 Pacific Time originator tableDigital Atka mackerel Pleurogrammus monopterygius were captured and tagged with depth and temperature recording devices (archival tags) on 23 July 2000 in Seguam Pass, Aleutian Islands, Alaska. Nine of the 117 tagged fish were recovered in Seguam Pass during September 2000, and an additional 5 fish recovered thereafter (14 total). In addition, 413 tags were released in Tanaga Pass in 2002, with 10 recoveries. Fish were tagged externally just below the dorsal fin. Atka mackerel displayed strong diel behavior, with vertical movements away from the bottom occurring almost exclusively during daylight hours and little to no movement at night. Vertical movements occurred when light levels at 150 m were greater than 7.31 × 10–5 µmol photons m–2 s–1, or approximately between 08:00 and 23:00 h Alaska Daylight Time (ADT; GMT – 8) during August. Daytime vertical movements were correlated with light intensity, time of day and current velocity. The occurrence of vertical movements tended to increase with increasing light during the morning and early afternoon, but then decrease with increasing hour of the day after 13:00 h ADT. The magnitude of surface-directed vertical excursions was reduced during spring tide periods, when current velocities are highest. By comparison, the magnitude of slope-directed excursions was greater during spring tide periods and reduced during neap tide periods. Eight fish were at liberty for 42 to 44 d and 1 for 65 d. Two of the tagged males displayed nest guarding behavior for the majority of their time at liberty. Depths for these 2 males (115 to 117 m) were much deeper than previously observed for Atka mackerel spawning grounds. Given that Atka mackerel are more likely to be on the bottom during the night and less likely during the day, the variance of abundance estimates from bottom trawl surveys may be reduced by accounting for these diel differences. To examine the vertical migration behavior of Atka mackerel, and relate the behavior to catchability in bottom trawl surveys. completed Nichol, Dan dan.nichol@noaa.gov pointOfContact Nichol, Dan dan.nichol@noaa.gov custodian ORA-30625: method dispatch on NULL SELF argument is disallowed place Error 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 Groundfish Assessment Program project InPort otherRestrictions Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/RACE/GAP/Nichol: Archival tag depth and temperature data from Atka mackerel [Data Date Range], https://www.fisheries.noaa.gov/inport/item/28004. 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: There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed. otherRestrictions 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. otherRestrictions Distribution Liability: The user is responsible for the results of any application of this data for other than its intended purpose. NOAA denies liability if the data are misused. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 28004 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/28004.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 environment oceans -172.75 -171.75 52 52.25 | Currentness: Ground Condition 2000 | Currentness: Ground Condition 2002 Publication: Nichol, D.G. and Somerton D.A. 2002. Diurnal vertical migration of the Atka Mackerel Pleurogrammus monopterygius as shown by archival tags. Mar. Ecol. Prog Ser. 239:193-207. CSV - Comma Separated Values (Text) Nichol, Dan dan.nichol@noaa.gov distributor https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/RACE/GAP/2000-2004%20Archival%20tag%20depth%20and%20temperature%20from%20Atka%20mackerel.csv WWW:LINK-1.0-http--link 28004_RACE_2000-2004_Archival_tag_depth_and_temper Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/15/2021. Contact: Daniel.woodrich@noaa.gov download dataset Atka mackerel were initially captured during two bottom trawl tows made on 23 July 2000 aboard the chartered F/V Morning Star in Seguam Pass, Alaska. Tow durations were kept short (< 15 min) in order to minimize injury to fish. Fish were held briefly in tanks plumbed with a continuous flow of fresh seawater. A total of 117 fish were tagged with archival tags and released on 23 July 2000; 66 fish from the first tow (Haul 4) at 119 m bottom depth and 51 fish from the second (Haul 7) at 110 m bottom depth. Fish were measured to the nearest cm fork length (FL) and released within 3.1 km of the capture location. Archival tags were externally attached just below the anterior section of the dorsal fin. Fish were secured in a V-shaped cradle and paired 18 gauge hypodermic needles were inserted through the fish. Stainless-steel wire (0.02 gauge, 0.5 mm diameter) was fed through the tag and then through the open end of the hypodermic needles. After removing the hypodermic needles, the stainless-steel wire ends were fed through a pink plastic oval and secured with stainless-steel connector sleeves. This procedure took approximately three minutes per fish. A tag reward program was implemented to retrieve tagged fish. This program was conducted in association with an ongoing spaghetti tag project for Atka mackerel in Seguam Pass (See Susanne McDermott). Publication: Nichol, D.G. and Somerton D.A. Diurnal vertical migration of the Atka Mackerel Pleurogrammus monopterygius as shown by archival tags. Mar. Ecol. Prog Ser. 239:193-207.