# Arctic Ostracode Rabilimis Population Data during the Quaternary #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with '#' followed by a space # Data lines have no '#' # # NOAA_Landing_Page: https://www.ncdc.noaa.gov/paleo/study/33992 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-ocean-33992.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Paleoceanography # # Dataset_DOI: 10.25921/fdz8-5628 # # Science_Keywords: #--------------------------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/cronin2021b/cronin2021-ryder19-12-gc1.txt # Data_Download_Description: NOAA Template File; Ryder19-12-GC1 Rabilimis Cronin2021 Data # #--------------------------------------- # Contribution_Date # Date: 2021-08-26 #--------------------------------------- # File_Last_Modified_Date # Date: 2022-07-08 #--------------------------------------- # Title # Study_Name: Arctic Ostracode Rabilimis Population Data during the Quaternary #--------------------------------------- # Investigators # Investigators: Cronin, T.M.; Gemery, L.; Olds, B.M.; Regnier, A.M.; Poirier, R.K.; Sui, S. #--------------------------------------- # Description_Notes_and_Keywords # Description: # Provided Keywords: Paleoceanography, Paleoclimatology, Arctic Ocean, Ostracode, Rabilimis #--------------------------------------- # Publication # Authors: Cronin, T.M., L. Gemery, B.M. Olds, A.M. Regnier, R.K. Poirier, and S. Sui # Published_Date_or_Year: 2022-05-01 # Published_Title: Abrupt Quaternary Ocean-ice Events in the Arctic: Evidence from the Ostracode Rabilimis # Journal_Name: Micropaleontology # Volume: 68 # Edition: # Issue: 3 # Pages: 233-242 # Report_Number: # DOI: 10.47894/mpal.68.3.03 # Online_Resource: # Full_Citation: # Abstract: The Arctic Ocean has experienced orbital and millennial-scale climate oscillations over the last 500 kilo-annum (ka) involving massive changes in global sea level and components of the Arctic cryosphere, including sea-ice cover, land-based ice sheets and ice shelves. Although these climate events are only partially understood, micropaleontological studies utilizing ostracodes and benthic foraminifera have demonstrated that major changes in faunas have occurred at different timescales that signify ecosystem regime changes linked to sea-ice cover, surface productivity, bottom temperature and other factors. In addition to faunal changes characterizing glacial-interglacial cycles, Arctic sediments contain several unusual faunal events that cannot be explained by orbital-scale sea level and cryospheric changes. One indicator of such events involves the ostracode Rabilimis mirabilis (Brady, 1868), a shallow-water species that inhabits continental shelves in the modern Arctic. We conducted studies of the stratigraphic distribution of R. mirabilis in cores from the Northwind, Mendeleev, Lomonosov, and Alpha Ridges; the Siberian and North American (Beaufort Sea) continental margins; and the Lincoln Sea off North Greenland and in the northern Greenland Sherard Osborn Fjord. Evidence from these records suggests that this species occurs as a fossil in deeper water sediment cores on the upper parts of submarine ridges (mainly 700-900 meters water depth, mwd), in significant numbers (from 1% to 50% of total ostracodes) during Marine Isotope Stages (MIS) 5a (125-109 ka), MIS 4 (71-57 ka), and MIS 3 (57-29 ka). Furthermore, it occurs in cores from various depths on the Siberian margin, the Beaufort and Lincoln Seas during MIS 1 (the Holocene, ~11-0 ka). These occurrences involve well-preserved, stratigraphically consistent adult and juvenile populations, which are autochthonous in nature and not caused by downslope transport or ice rafting. Based on their age and associated paleoceanographic conditions in the Arctic, we interpret these R. mirabilis events as signifying basin-ward migration during abrupt changes in growth and decay of massive ice shelves and may be useful as biostratigraphic markers. #--------------------------------------- # Publication # Authors: Gemery, L., T.M. Cronin, W.M. Briggs Jr., E.M. Brouwers, E.I. Schornikov, A. Stepanova, A. Wood, and M. Yasuhara # Published_Date_or_Year: 2017 # Published_Title: An Arctic and Subarctic ostracode database: biogeographic and paleoceanographic applications. # Journal_Name: Hydrobiologia # Volume: 786 # Edition: # Issue: # Pages: 59-95 # Report_Number: # DOI: 10.1007/s10750-015-2587-4 # Online_Resource: # Full_Citation: # Abstract: A new Arctic Ostracode Database-2015 (AOD-2015) provides census data for 96 species of benthic marine Ostracoda from 1340 modern surface sediments from the Arctic Ocean and subarctic seas. Ostracoda is a meiofaunal, Crustacea group that secretes a bivalved calcareous (CaCO3) shell commonly preserved in sediments. Arctic and subarctic ostracode species have ecological limits controlled by temperature, salinity, oxygen, sea ice, food, and other habitat-related factors. Unique species ecology, shell chemistry (Mg/Ca ratios, stable isotopes), and limited stratigraphic ranges make them a useful tool for paleoceanographic reconstructions and biostratigraphy. The database, described here, will facilitate the investigation of modern ostracode biogeography, regional community structure, and ecology. These data, when compared to downcore faunal data from sediment cores, will provide a better understanding of how the Arctic has been affected by climatic and oceanographic change during the Quaternary. Images of all species and biogeographic distribution maps for selected species are presented, with brief discussion of representative species’ biogeographic and ecological significance. Publication of AOD-2015 is open-sourced and will be available online at several public websites with latitude, longitude, water depth, and bottom water temperature for most samples. It includes material from Arctic abyssal plains and submarine ridges, continental slopes, and shelves of the Kara, Laptev, East Siberian, Chukchi, Beaufort Seas, and several subarctic regions. #--------------------------------------- # Publication # Authors: Poirier, R.K., T.M. Cronin, W.M. Briggs Jr., and R. Lockwood # Published_Date_or_Year: 2012 # Published_Title: Central Arctic paleoceanography for the last 50 kyr based on ostracode faunal assemblages # Journal_Name: Marine Micropaleontology # Volume: 88-89 # Edition: # Issue: # Pages: 65-76 # Report_Number: # DOI: 10.1016/j.marmicro.2012.03.004 # Online_Resource: # Full_Citation: # Abstract: The paleoceanography of the central Arctic Ocean was reconstructed for the last 50kyr (Marine Isotope Stages (MIS) 1–3) based on ostracode assemblages from 21 14C-dated sediment cores from the Mendeleev, Lomonosov, and Gakkel Ridges. Arctic sediments deposited during the Holocene interglacial period (MIS 1), the Bølling–Allerød, and larger interstadial Dansgaard–Oeschger (DO) events (3–4, 8, and 12) contain abundant Cytheropteron spp., Henryhowella asperrima, and Krithe spp. at intermediate/deep-depths (~1000 to 3000m). These assemblages suggest a ventilated deep, Arctic Ocean water mass similar to the modern Arctic Ocean Deep Water (AODW) during these time periods. In contrast, sediment deposited during stadial events corresponding to Heinrich events 1, 2, 3, and 4, (also possibly the Younger Dryas; YD), contain abundant Polycope spp. (60–80%) suggesting a greater influence of the Atlantic Layer (AL) on the Arctic Intermediate Water (AIW) and AODW. Reduced sea-ice during the early Holocene, the last deglacial, and MIS 3 interstadials is indicated by the reoccurrence of Acetabulastoma arcticum, an epipelagic species that is parasitic on sea-ice dwelling amphipods. One hypothesis to explain these oceanographic changes during longer stadial events, particularly within the last glacial period (MIS 2), involves sluggish ocean circulation, thicker sea-ice cover, and a deeper halocline with ocean exchange between Greenland Sea and Arctic Ocean deep-water through the Fram Strait. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: U.S. Geological Survey Climate Research and Development Program # Grant: #--------------------------------------- # Site_Information # Site_Name: Ryder19-12-GC1 # Location: Arctic Ocean # Northernmost_Latitude: 82.5782 # Southernmost_Latitude: 82.5782 # Easternmost_Longitude: -52.5277 # Westernmost_Longitude: -52.5277 # Elevation_m: #--------------------------------------- # Data_Collection # Collection_Name: Ryder19-12-GC1 Rabilimis Cronin2021 # First_Year: 10500 # Last_Year: 4846 # Time_Unit: cal yr BP # Parameter_Keywords: population abundance # Core_Length_m: # Notes: #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # PaST_Thesaurus_Download_Resource: https://www.ncdc.noaa.gov/paleo/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## core_ID sample identification,,,,,Paleoceanography,,,C, ## Section notes,,,,,Paleoceanography,,,C, ## depth_top_cm depth at sample end,,,centimeter,,Paleoceanography,,,N, ## depth_bottom_cm depth at sample start,,,centimeter,,Paleoceanography,,,N, ## composition_depth depth ,,,centimeter,,Paleoceanography,,,N,Estimation ## age age,,,calendar year before present,,Paleoceanography,,,N, ## Rabilimis_mirabilis_count identified ostracod,,,count,,Paleoceanography,,,N,Rabilimis_mirabilis ## total_specimens total ostracods,,,count,,Paleoceanography,,,N,Total number of specimens #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: -999 core_ID Section depth_top_cm depth_bottom_cm composition_depth age Rabilimis_mirabilis_count total_specimens Ryder19-12-GC1 1 13 15 13 4846 0 30 Ryder19-12-GC1 1 23 25 23 6055 0 177 Ryder19-12-GC1 1 33 35 33 7348 0 43 Ryder19-12-GC1 1 43 45 43 7641 0 182 Ryder19-12-GC1 1 63 65 63 8226 0 82 Ryder19-12-GC1 1 83 85 83 8810 0 56 Ryder19-12-GC1 1 93 95 93 9103 0 19 Ryder19-12-GC1 BIN 103 25 136 10349 0 18 Ryder19-12-GC1 BIN 33 85 200 -999 0 11 Ryder19-12-GC1 2 93 95 233 -999 0 0 Ryder19-12-GC1 2 103 105 243 -999 0 0 Ryder19-12-GC1 2 123 125 263 -999 0 0 Ryder19-12-GC1 2 133 135 274 -999 0 0