gov.noaa.nmfs.inport:27842 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 Foy, Robert robert.foy@noaa.gov email pointOfContact 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/SAP/Foy: The effects of ocean acidification on ovigerous Tanner crab size, calcium, and magnesium content. : Kodiak Island, Alaska. AFSC/RACE/SAP/Foy: The effects of ocean acidification on ovigerous Tanner crab size, calcium, and magnesium content. : Kodiak Island, Alaska. publication NOAA/NMFS/EDM 27842 https://www.fisheries.noaa.gov/inport/item/27842 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Foy, Robert robert.foy@noaa.gov originator Long, Chris chris.long@noaa.gov originator Swiney, Katherine katherine.swiney@noaa.gov originator Kodiak Fisheries Research Center 907 481-1700 301 Research Court Kodiak AK 99615 USA https://www.afsc.noaa.gov/kodiak/ WWW:LINK-1.0-http--link Kodiak Fisheries Research Center Website Website listed for Kodiak Fisheries Research Center information originator tableDigital To study the effects of ocean acidification we conducted laboratory experiments with adult ovigerous females of the economically important southern Tanner crab, Chionoecetes bairdi. Ovigerous females were reared in one of 3 treatments: control (ambient pH ~8.1), pH 7.8, and pH 7.5 for 2 years. The adult female sizes used for the experiments ranged from 87 to 112 mm among the three treatments. Throughout the experiment , pH and temperature were measured daily in each of the 3 treatments. The mean daily temperature was 5.0 C, varied seasonally from a low of ~1 C in January 2012 to a high of ~ 9C in August 2011, and did not vary between treatments. pH remained significantly different among the treatments. Brooding duration for each female was defined as beginning the day of egg extrusion in 2012 and ended when larval hatching began in 2013. Mean brood duration ranged from 340 to 366 days. Magnesium and calcium content were determined at the end of the experiment from a portion of exoskeleton. Magnesium did not differ with pH treatment but the ratio of magnesium to calcium did differ among treatments. The purpose of the female Tanner crab experiment is to provide the initial carapace length, the brood duration, and the death date for each female and the specific treatment data (pH and temperature) used in the experiment. The (calcium) Ca and (magnesium) Mg dataset is to provide the carapace mineral data associated with the three treatments collected at the end of the experiment completed Foy, Robert robert.foy@noaa.gov pointOfContact Foy, Robert robert.foy@noaa.gov email custodian notPlanned Kodiak Island place Alaska Female calcium content Female magnesium content Tanner crab size Tunner crab brood duration seawater pH seawater temperature tunner crab Female Ca and Mg 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 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 Shellfish Assessment Program project InPort otherRestrictions Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/RACE/SAP/Foy: The effects of ocean acidification on ovigerous Tanner crab size, calcium, and magnesium content. : Kodiak Island, Alaska. [Data Date Range], https://www.fisheries.noaa.gov/inport/item/27842. 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: none otherRestrictions Use Constraints: Must read and fully comprehend the metadata prior to data use; acknowledgement of the Originator when using the data set as a source; sharing of data products developed using the source data set with the Originator; data should not be used beyond the limits of the source scale; the data set is NOT a survey document and should not be utilized as such unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 27842 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/27842.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 MS Excel 2012 -152.3 -151.1 57.65 57.72 Kodiak Island, Alaska | Currentness: Observation 2011-05-10 2013-07-16 false eng false Female Ca and Mg.xlsx 2016-05-16 publication Female pH temp.xls 2016-05-16 publication Female data.xlsx 2016-05-16 publication Brooding duration.xlsx 2016-05-16 publication 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 distributor https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/RACE/SAP/Foy%3B%20The%20effects%20of%20ocean%20acidification%20on%20ovigerous%20Tanner%20crab%20size%2C%20calcium%2C%20and%20magnesium%20content.%20%3B%20Kodiak%20Island%2C%20Alaska..csv WWW:LINK-1.0-http--link https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/RACE/SAP/Foy%3B%20The%20effects%20of%20ocean%20acidification%20on%20ovigerous%20Tanner%20crab%20size%2C%20calcium%2C%20and%20magnesium%20content.%20%3B%20Kodiak%20Island%2C%20Alaska..csv Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/15/2021. Contact: Daniel.woodrich@noaa.gov download dataset Accuracy The accuracy of the size, seawater pH and temperature, and female calcium and magnesium content is high (less than 1% difference from actual) due to the low measurement error of the instruments used, measurement accuracy and precision controlled through system calibrations, and frequency of observations during the experiment. The brood duration data is 100% accurate due to daily (repeated) checking of female condition so that the hatch date is known. Completeness Report The data collected on the adult female experiments are complete (i.e. not filtered). Conceptual Consistency Female size data were compared to known size frequency data. No quantitative assessments of consistency were made. Brood Duration information was broadly compared to previous studies conducted on Tanner crab at the Kodiak Laboratory and to similar species from similar collection locations while considering environmental and laboratory conditions. No quantitative assessments of consistency were made. Female pH temperature information was broadly compared to known seawater conditions in the Gulf of Alaska while taking into account laboratory variability and statistically compared to a control (alpha=0.05). Female Ca and Mg information was broadly compared to previous studies on crab shell mineral content and to similar measurements made on similar crab species and statistically compared to a control (alpha=0.05). For example, for comparing we used the study described in Mathis, Jeremy T., Jessica N. Cross, and Nicholas R. Bates. "Coupling primary production and terrestrial runoff to ocean acidification and carbonate mineral suppression in the eastern Bering Sea." Journal of Geophysical Research: Oceans (19782012) 116.C2 (2011). Measurement of female size, brood duration, seawater pH, and seawater temp 2013-07-16T00:00:00 Comparing size data were compared to known size classes 2013-07-15T00:00:00 brood duration data analysis was completed by 2014-03-19T00:00:00 Analysis of seawater pH and temperature data. 2014-04-17T00:00:00 Female Ca and Mg data were measured on 2013-07-15T00:00:00 Statistical analysis 2013-12-03T00:00:00