noaa-ocean-29292 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2025-02-20 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Gulf of Maine bulk and amino acid nitrogen isotope data from 1783-2010 CE 2020-03-19 publication doi:10.25921/aqta-ey34 noaa-ocean-29292 NCEI DSI 1200_02 NCEI DSI 1200_01 Whitney, N.M. originator Whitney, N.M. author Johnson, B.J. originator Johnson, B.J. author Dostie, P.T. originator Dostie, P.T. author Luzier, K. originator Luzier, K. author Wanamaker, A.D. originator Wanamaker, A.D. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic location of Gulf Of Maine, North Atlantic Ocean. The time period coverage is from 167 to -60 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Records of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-ocean.png Paleoclimatology - Paleoceanography PNG Earth Science > Paleoclimate > Ocean/Lake Records Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 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. 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URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleocean > biomarkers earth science > paleoclimate > paleocean > other earth science > paleoclimate > paleocean > nitrogen isotopes earth science > paleoclimate > paleocean > carbon isotopes theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 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 What: sample identification; Material: null What: sample identification; Material: null What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: trophic position index; Material: bivalve What: hydroxyproline; Material: bivalve What: phenylalanine; Material: bivalve What: sample identification; Material: null What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: amino acid; Material: bivalve What: delta 15N; Material: bivalve What: leucine; Material: bivalve What: proline; Material: bivalve What: serine; Material: bivalve What: delta 13C; Material: bivalve What: age at sample start; Material: null What: amino acid; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: methionine; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 13C; Material: bivalve What: delta 13C; Material: bivalve What: age at sample end; Material: null What: delta 15N; Material: bivalve What: amino acid; Material: bivalve What: amino acid; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: isoleucine; Material: bivalve What: notes; Material: null What: delta 15N; Material: bivalve What: amino acid; Material: bivalve What: sample identification; Material: null What: lysine; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 13C; Material: bivalve What: delta 13C; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: age; Material: null What: aspartic acid; Material: bivalve What: delta 15N; Material: bivalve What: delta 13C; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: delta 15N; Material: bivalve What: age; Material: null What: glycine; Material: bivalve What: threonine; Material: bivalve What: delta 13C; Material: bivalve What: delta 15N; Material: bivalve What: age; Material: null What: amino acid; Material: bivalve What: delta 15N; Material: bivalve What: age; Material: null What: glutamic acid; Material: bivalve What: tyrosine; Material: bivalve What: valine; Material: bivalve theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Ocean > Atlantic Ocean > North Atlantic Ocean > Gulf Of Maine > Seguin Is.,Jonesport,Cobscook Bay,Isle au Haut,Damariscotta Est,Darling MC > LATITUDE > LONGITUDE place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 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 otherRestrictions Cite as: Whitney, N.M.; Johnson, B.J.; Dostie, P.T.; Luzier, K.; Wanamaker, A.D. (2020-03-19): NOAA/WDS Paleoclimatology - Gulf of Maine bulk and amino acid nitrogen isotope data from 1783-2010 CE. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/aqta-ey34. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. 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Paired bulk organic and individual amino acid d15N analyses of bivalve shell periostracum: A paleoceanographic proxy for water source variability and nitrogen cycling processes 2019 publication Whitney, Nina M., Johnson, Beverly J., Dostie, Philip T., Luzier, Katherine, and Wanamaker Jr., Alan D. author Geochimica et Cosmochimica Acta publisher https://doi.org/10.1016/j.gca.2019.03.019 HTTPS Web Browser Associated Reference published 2019 Whitney, Nina M., Johnson, Beverly J., Dostie, Philip T., Luzier, Katherine, and Wanamaker Jr., Alan D., 2019: Paired bulk organic and individual amino acid d15N analyses of bivalve shell periostracum: A paleoceanographic proxy for water source variability and nitrogen cycling processes. Geochimica et Cosmochimica Acta, 254, 67-85, 10.1016/j.gca.2019.03.019 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 1783 CE to 2010 CE; Date Range: 167 cal yr BP to -60 cal yr BP; -69.7 -67.1 43.7 44.9 1783 2010 STUDY NOTES: 2 sigma combined uncertainty (analytical uncertainty and average correction factor) for bulk d15N is +/- 0.36 per mil and for d13C is +/- 0.22 per mil. The long term, average 2 sigma analytical uncertainty for d15N of amino acids is +/- 1.9 per mil. The 2 sigma propagated analytical uncertainty for the trophic position calculation is +/- 0.5. Details of the construction of the chronology used for this study can be found in Wanamaker et al., 2019 (https://doi.org/10.1007/s00382-018-4513-8). Core water depths range from -38 to -80 m. Provided Keywords: geochemistry, Arctica islandica, nitrogen isotopes, compound specific isotopic analyses of amino acids, Gulf of Maine, ocean circulation ABSTRACT SUPPLIED BY ORIGINATOR: Developing high resolution, well-dated marine proxies of environmental, climatic, and oceanographic conditions is critical in order to advance our understanding of the ocean's role in the global climate system. While some work has investigated bulk and compound specific stable nitrogen isotopes (d15N) in bivalve shells as proxies for environmental variability, the small concentrations of nitrogen found in the organic matrix of the shell calcium carbonate (CaCO3) makes developing high resolution records challenging. This study investigates the potential of using the bulk and amino acid d15N of bivalve periostracum, the protein layer on the outside of the shell, as a proxy archive of nitrogen cycling processes and water source variability. Bulk d15N values were measured on the periostracum, aragonitic CaCO3, and adductor muscle of Arctica islandica shells collected in the Gulf of Maine. Increased variability of isotopic values across growth lines compared to along growth lines support mechanistic reasoning based on growth processes that periostracum is recording changes in d15N over the course of the clam's lifetime (up to 500 years). In addition, the statistically significant relationship between periostracum d15N and contemporaneous carbonate d15N of the same shell (r= 0.82, p<.0001, n=40) suggests that periostracum preserves a similar d15N signal to that preserved in the carbonate. This finding, coupled with the fact that source amino acid d15N values of periostracum are similar to that of the adductor muscle and the particulate organic matter (POM) consumed by the clam, suggests that periostracum bulk d15N reflect the d15N of the clam's food source. The isotopic offsets between periostracum, carbonate, and adductor muscle d15N values are primarily caused by differences in amino acid composition of the different tissue types, as evidenced by isotope mass balance calculations, although may also be related to differences in d15N values of the individual amino acids of the different tissue types, especially the trophic amino acids. Compound specific d15N analyses of the periostracum of A. islandica shells were used to determine that the calculated trophic position of the clams in this study (1.4 +/- 0.4) did not change significantly between 1783 and 1997. Phenylalanine d15N values over the last 70 years show similar trends to that of the bulk record, suggesting that changes in bulk d15N of that time period are related to changes in baseline d15N. Periostracum d15N values from shells collected in the western Gulf of Maine have decreased by ~1‰ since the mid-1920s. This trend (-0.008‰/year) is not statistically different from the trend of previously published d15N values of deep-sea corals from the entrance to the Gulf of Maine over the same time period. This coral record has been shown to indicate a shift in water mass source to the region and therefore the similarity between the two records suggest that changes in periostracum d15N values are reflecting broader North Atlantic hydrographic changes. Our study introduces a new, high-resolution and absolutely dated paleoceanographic proxy of baseline d15N, presenting the opportunity for future reconstructions of aspects of nitrogen cycling and water source changes in the global oceans. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. 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Native Format(s) https://doi.org/10.25921/aqta-ey34 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/29292 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/paleoceanography HTTPS Information NCEI Paleoceanography Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/whitney2019/whitney2019-supp-fig2.txt HTTPS Download /contributions_by_author/whitney2019/whitney2019-supp-fig2.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/whitney2019/whitney2019-fig8.txt HTTPS Download /contributions_by_author/whitney2019/whitney2019-fig8.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/whitney2019/whitney2019-fig7.txt HTTPS Download /contributions_by_author/whitney2019/whitney2019-fig7.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/whitney2019/whitney2019-fig6.txt HTTPS Download /contributions_by_author/whitney2019/whitney2019-fig6.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/whitney2019/whitney2019-fig5.txt HTTPS Download /contributions_by_author/whitney2019/whitney2019-fig5.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/whitney2019/whitney2019-fig4.txt HTTPS Download /contributions_by_author/whitney2019/whitney2019-fig4.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/whitney2019/whitney2019-fig3.txt HTTPS Download /contributions_by_author/whitney2019/whitney2019-fig3.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/whitney2019/whitney2019-fig2.txt HTTPS Download /contributions_by_author/whitney2019/whitney2019-fig2.txt Original Data and Full Metadata download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21