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  • PANGAEA  (3)
  • Wiley
  • 2020-2024  (3)
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Keywords
Publisher
Years
Year
  • 1
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    Unknown
    Shell size and weight data of Trilobatus sacculifer shells off Puerto Rico (Caribbean Sea) (2020)
    PANGAEA
    Details
    Publication Date: 2024-02-15
    Description: The state of a population of planktic foraminifers at a certain time reflects multiple processes in the upper ocean, including environmental conditions to which the population was exposed during its growth, the age of the cohorts, and spatiotemporal patchiness. We carried out depth-stratified (0-60, 60-100 m) replicated sampling off Puerto Rico in autumn 2012, revisiting three stations previously sampled in autumn 1994 and spring 1995, in order to analyze seasonal and interannual variability of planktic foraminifers and the stable isotopic composition of their tests. The merged dataset from all three sampling campaigns allows us to assess short- and long-term changes in foraminiferal population dynamics and the spatial assemblage coherency along the shelf edge. All three sample series cover more than 2 weeks during either spring (1995) or autumn (1994, 2012) and include the time of the full moon when reproduction of some surface-dwelling planktic foraminifers has been postulated to take place. Our analyses indicate that interannual variability affected the faunal composition, and both autumn assemblages were characterized by oligotrophic tropical species, dominated by Trilobatus sacculifer and Globigerinoides ruber (white and pink variety). However, G. ruber (white) had a higher abundance in 1994 (37 %) than in 2012 (3.5 %), which may be partially due to increasing sea surface temperatures since the 1990s. Between 60 and 100 m water depth, a different faunal composition with a specific stable oxygen isotope signature provides evidence for the presence of the Subtropical Underwater at the sampling site. Measurements on T. sacculifer sampled in autumn 2012 revealed that test size, calcification and incidence of sac-like chambers continued to increase after full moon, and thus no relation to the synodic lunar reproduction cycle was recognized. During autumn 2012, outer bands of hurricane Sandy passed the Greater Antilles and likely affected the foraminifers. Lower standing stocks of living planktic foraminifers and lower stable carbon isotope values from individuals collected in the mixed layer likely indicate the response to increased rainfall and turbidity in the wake of the hurricane.
    Keywords: 1; 2; Caribbean Sea; DATE/TIME; Depth, bottom/max; Depth, top/min; DEPTH, water; Event label; Foraminifera, planktic, shell area density; Identification; Morphotype; Planktonic foraminifera; Plankton net samples; Puerto_Rico_2012-1; Puerto_Rico_2012-2; Shell calcification intensity; Shell dimension; Shell size; Species; Station label; Trilobatus sacculifer
    Type: Dataset
    Format: text/tab-separated-values, 4241 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Analyses on Cibicidoides wuellerstorfi from ODP Hole 165-999A (2020)
    PANGAEA
    Details
    Publication Date: 2024-06-01
    Description: For trace element analyses, single specimens of C. wuellerstorfi have been analyzed using femtosecond laser ablation inductively coupled plasma mass spectrometry (fs-LA-ICP131 MS) at the Geochemistry Laboratory at the Max Planck Institute for Chemistry. Na, Mg, and Sr of 142 specimens of C. wuellerstorfi have been measured at high-resolution on (up to) each of the final five chambers to eliminate possible inaccuracies that are likely to be caused by varying sample size. The fs-LA-ICP-MS analyses were performed on 25-μm diameter spots on each chamber with a pulse repetition rate of 15 Hz at low fluence (0.1-0.3 J/cm2). Calibration was performed with the microanalytical synthetic reference material MACS‐3 for carbonate and NIST612 for silica. Average values of all chambers analyzed in the same specimen were used for further analyses. Since foraminifers from different regions show particular offsets in the Mg/Ca composition of their shell, depending on region specific temperature ranges of ambient seawater, region-specific formulas are used. We have applied the formula Mg/Ca=0.82e^0.19*BWT of Tisserand et al. (2013) from samples collected from similar geographic situations to avoid offsets. The formula has been applied to calculate temperature variability of each analyzed chamber. The average value obtained from chamber-to-chamber temperature variability of each specimen has been applied as average temperature data of the entire test.
    Keywords: 165-999A; Caribbean Sea; Cibicidoides wuellerstorfi, Magnesium/Calcium ratio; Cibicidoides wuellerstorfi, Sodium/Calcium ratio; Cibicidoides wuellerstorfi, Strontium/Calcium ratio; DRILL; Drilling/drill rig; Joides Resolution; LA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer; Leg165; Sample code/label; Sample ID; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 3701 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
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    Unknown
    Occurrence of Globorotalia cavernula in the water column and sediments: global compilation of sightings and abundances (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: Here, we present a global compilation of previously reported sightings of the rare planktic foraminifer Globorotalia cavernula Bé, 1967 as well as new observations of live-collected specimens from the Southern Ocean (Subantarctic south of Africa). The goal of this synthesis is to provide the geographic and stratigraphic context needed to investigate the past and present-day distributions of this rare but possibly under-recognized species. The previous records include modern occurrences in the water column (collected by plankton net tows and a single sediment trap) and seafloor sediments ranging in age from recent to Eocene. Seafloor sediment samples were collected by dredge, sediment grabs and core-tops. Deeper sediments came from drilling cores. Existing databases provided a foundation for this compilation, particularly ForCenS for surface sediments (Siccha & Kucera, 2017) and FORCIS for water-column collections (de Garidel-Thoron et al., 2022; Chaabane et al., 2022, 2023). These records were supplemented with occurrences from the literature, PANGEA, and cruise reports of the Deep Sea Drilling Project (DSDP) / Ocean Drilling Program (ODP). Searches were conducted in October 2022 using Google Scholar, GBIF, EOL (Encyclopedia of Life, "http://eol.org", which includes records from the Smithsonian NMNH). Where available, we include information on the abundance of G. cavernula in each collection, and indicate whether photographic evidence (or drawings) could be found to support the identification. Globorotalia crozetensis Thompson, 1973 (reclassified as G. cavernula by Brummer & Kučera, 2022) and closely related Globorotalia petaliformis Boltovskoy, 1974 were also included in compilation.
    Keywords: 15-147; 154-925; 164-997A; 180-1108B; 26-253; 26-254; 26-258A; 2803; 2804; 29-284; 40-362A; 49-411A; 49-412; 54-423; 54-424; 54-425; 73-519; Abundance; abundance data; Abundance per volume; Age, comment; Antarctic Ocean/Tasman Sea/PLATEAU; ATLANTIS_II_cruise31_36; Author(s); Be67_EL_10-1-130; Be67_EL_10-1-131; Be67_EL_10-19-186; Be67_EL_10-19-187; Be67_EL_10-20-190; Be67_EL_10-2-133; Be67_EL_10-24-208; Be67_EL_10-28-219; Be67_EL_10-29-221; Be67_EL_10-31-225; Be67_EL_10-31-226; Be67_EL_10-31-227; Be67_EL_10-3-136; Be67_EL_10-32-230; Be67_EL_10-4-139; Be67_EL_10-5-141; Be67_EL_11-5-249; Be67_EL_13-1-443; Be67_EL_13-2-449; Be67_EL_13-3-456; Be67_EL_13-6-474; Be67_EL_14-4-594; Be67_EL_15-17-806; Be67_EL_15-23-843; Be67_EL_15-26-864; Be67_EL_15-5-751; Be67_EL_15-5-752; Be67_EL_17-34-1112; Be67_EL_18-1-1137; Be67_EL_18-2-1138; Be67_EL_18-3-1150; Be67_EL_19-1171; Be67_EL_19-13-1233; Be67_RC9_80; Be67_RC9_92; Be67_V16_202; BOFS31/1K; BOFS31#1; Caribbean Sea/RIDGE; CD53; Charles Darwin; Closing Discovery net, Manufacturer unknown, N70V; Comment; COMPCORE; Composite Core; Core tops; CP_trap; Cruise/expedition; Depth, description; Disc2_1951_2803; Disc2_1951_2804; DRILL; Drilling/drill rig; EL 10-1-130; EL 10-1-131; EL 10-19-186; EL 10-19-187; EL 10-20-190; EL 10-2-133; EL 10-24-208; EL 10-28-219; EL 10-29-221; EL 10-31-225; EL 10-31-226; EL 10-31-227; EL 10-3-136; EL 10-32-230; EL 10-4-139; EL 10-5-141; EL 11-5-249; EL 13-1-443; EL 13-2-449; EL 13-3-456; EL 13-6-474; EL 14-4-594; EL 15-17-806; EL 15-23-843; EL 15-26-864; EL 15-5-751; EL 15-5-752; EL 17-34-1112; EL 18-1-1137; EL 18-2-1138; EL 18-3-1150; EL 19-1171; EL 19-13-1233; ELT10; ELT11; ELT13; ELT14; ELT15; ELT17; ELT18; ELT19; Eltanin; Event label; GeoB1728-3; Giant box corer; GIK15612-2; GIK15637-1; GIK15667-1; GIK15669-2; GIK15672-2; GIK17933-2; GKG; Globorotalia cavernula; Globorotalia crozetensis; Globorotalia petaliformis; Glomar Challenger; Gravity corer (Kiel type); Hayward86_station17; Indian Ocean//PLATEAU; Indian Ocean//RIDGE; Joides Resolution; KAL; Kasten corer; Knorr73_MOC131; KOL; LATITUDE; Leg15; Leg154; Leg164; Leg180; Leg26; Leg29; Leg40; Leg49; Leg54; Leg73; LONGITUDE; M20/2; M35/1; M35027-1; M53; M53_167; M53_169; M53_172-1; M57; M6; M9; Meteor (1964); Meteor (1986); MOC; MOCNESS opening/closing plankton net; MONITOR MONSUN; Namibia Continental Margin; net tows; Nicaraguan Rise, North Atlantic Ocean; North Atlantic; North Atlantic/BASIN; North Atlantic/FRACTURE ZONE; Northeast Atlantic; North Pacific/MOUND; North Pacific/SEDIMENT POND; Number of specimens; occurrence data; Ocean and sea region; off West Africa; Optional event label; PC; Persistent Identifier; Piston corer; Piston corer (Kiel type); PLA; planktic foraminifera; Plankton net; R/V_Knorr_73_MOC131; RC08; RC08-39; RC 9-80; RC 9-92; Reference/source; Robert Conrad; S. A. Agulhas II; Sample method; Sediment cores; Sediment sample; SES; Site; SL; SO95; Solomon Sea; Sonne; South Atlantic/RIDGE; South Atlantic Ocean; South China Sea; Species; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); station 17; Trap; TRAP; Uniform resource locator/link to reference; V16; V 16-202; van Veen Grab; Vema; VGRAB; VOY016; VOY016_W2; VOY016_W3; VOY019; VOY019_M6; VOY019_M9; W2; W3
    Type: Dataset
    Format: text/tab-separated-values, 1061 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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