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  • 1
    Book
    Book
    International Symposium on Foraminifera FORAMS 2014, Chile, 19 - 24 January 2014 : abstract volume (2014)
    Krákow, Poland : Grzybowski Foundation
    Details Availability
    Type of Medium: Book
    Pages: 124 pages
    ISBN: 9788388927355
    Series Statement: Grzybowski Foundation special publication 20
    Language: English
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    GEOMAR CATALOGUE
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  • 2
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    Glacial cold-water coral growth in the Gulf of Cádiz: Implications of increased palaeo-productivity (2010)
    Elsevier
    In:  Earth and Planetary Science Letters, 298 (3-4). pp. 405-416.
    Details
    Publication Date: 2019-09-23
    Description: A set of 40 Uranium-series datings obtained on the reef-forming scleractinian cold-water corals Lophelia pertusa and Madrepora oculata revealed that during the past 400 kyr their occurrence in the Gulf of Cádiz (GoC) was almost exclusively restricted to glacial periods. This result strengthens the outcomes of former studies that coral growth in the temperate NE Atlantic encompassing the French, Iberian and Moroccan margins dominated during glacial periods, whereas in the higher latitudes (Irish and Norwegian margins) extended coral growth prevailed during interglacial periods. Thus it appears that the biogeographical limits for sustained cold-water coral growth along the NE Atlantic margin are strongly related to climate change. By focussing on the last glacial-interglacial cycle, this study shows that palaeo-productivity was increased during the last glacial. This was likely driven by the fertilisation effect of an increased input of aeolian dust and locally intensified upwelling. After the Younger Dryas cold event, the input of aeolian dust and productivity significantly decreased concurrent with an increase in water temperatures in the GoC. This primarily resulted in reduced food availability and caused a widespread demise of the formerly thriving coral ecosystems. Moreover, these climate induced changes most likely caused a latitudinal shift of areas with optimum coral growth conditions towards the northern NE Atlantic where more suitable environmental conditions established with the onset of the Holocene.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    DOI: 10.1016/j.epsl.2010.08.017
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
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    The FORCIS database: A global census of planktonic Foraminifera from ocean waters (2023)
    Springer
    Details
    Publication Date: 2024-02-07
    Description: Planktonic Foraminifera are unique paleo-environmental indicators through their excellent fossil record in ocean sediments. Their distribution and diversity are affected by different environmental factors including anthropogenically forced ocean and climate change. Until now, historical changes in their distribution have not been fully assessed at the global scale. Here we present the FORCIS (Foraminifera Response to Climatic Stress) database on foraminiferal species diversity and distribution in the global ocean from 1910 until 2018 including published and unpublished data. The FORCIS database includes data collected using plankton tows, continuous plankton recorder, sediment traps and plankton pump, and contains similar to 22,000, similar to 157,000, similar to 9,000, similar to 400 subsamples, respectively (one single plankton aliquot collected within a depth range, time interval, size fraction range, at a single location) from each category. Our database provides a perspective of the distribution patterns of planktonic Foraminifera in the global ocean on large spatial (regional to basin scale, and at the vertical scale), and temporal (seasonal to interdecadal) scales over the past century.
    Type: Article , PeerReviewed
    Format: text
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
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    Spatial distribution of isotopic compositions of Globigerina bulloides and Neogloboquadrina pachyderma (dex.) and the faunal assemblages of planktic foraminifera in surface sediment samples along the Chilean continental slope between 23°S and 44°S
    PANGAEA
    In:  Supplement to: Mohtadi, Mahyar; Hebbeln, Dierk; Marchant, Margarita (2005): Upwelling and productivity along the Peru-Chile current derived from faunal and isotopic compositions of planktic foraminifera in surface sediments. Marine Geology, 216(3), 107-126, https://doi.org/10.1016/j.margeo.2005.01.008
    Details
    Publication Date: 2023-06-27
    Description: We report on the spatial distribution of isotopic compositions of the two planktic foraminifera species Globigerina bulloides and Neogloboquadrina pachyderma (dex.), and the faunal assemblages of planktic foraminifera in 91 surface sediment samples along the Chilean continental slope between 23°S and 44°S. Both d13C and d18O data of N. pachyderma (dex.) show little variability in the study area. North of 39°S, the isotopic values of N. pachyderma (dex.) are heavier than those of G. bulloides, whereas south of 39°S, this relation inverses. This is indicative for a change from a well-mixed, deep thermocline caused by coastal upwelling north of 39°S to well-stratified water masses in a non-upwelling environment south of 39°S. In addition, the faunal composition of planktic foraminifera marks this change by transition from an upwelling assemblage north of 39°S to a high-nutrient-non-upwelling assemblage south of 39°S, which is characterized by decreased contributions of upwelling indicators such as G. bulloides, N. pachyderma (sin.), and Globigerinita glutinata. In general, we can conclude that food and light rather than temperature are the primary control of the planktic foraminiferal assemblage between 23°S and 44°S off Chile. Our data point to higher marine productivity at upwelling centers north of 25°S and at 30-33°S. South of 39°S, significant supply of nutrients by fluvial input most likely boosts the productivity.
    Keywords: Center for Marine Environmental Sciences; GeoB; GeoB7103-4; GeoB7104-5; GeoB7106-1; GeoB7108-3; GeoB7112-1; GeoB7114-1; GeoB7115-1; GeoB7116-1; GeoB7118-1; GeoB7119-1; GeoB7120-1; GeoB7121-1; GeoB7122-2; GeoB7123-1; GeoB7127-1; GeoB7129-1; GeoB7130-1; GeoB7131-1; GeoB7132-1; GeoB7133-1; GeoB7134-1; GeoB7135-1; GeoB7136-1; GeoB7137-2; GeoB7138-1; GeoB7139-1; GeoB7140-1; GeoB7141-1; GeoB7142-2; GeoB7143-1; GeoB7144-1; GeoB7145-1; GeoB7146-1; GeoB7147-1; GeoB7148-1; GeoB7149-1; GeoB7150-1; GeoB7152-1; GeoB7153-1; GeoB7154-2; GeoB7156-1; GeoB7157-1; GeoB7158-1; GeoB7159-1; GeoB7160-3; GeoB7162-3; GeoB7163-4; GeoB7166-2; GeoB7167-3; GeoB7171-2; GeoB7172-3; GeoB7173-4; GeoB7174-2; GeoB7175-4; GeoB7177-2; GeoB7179-1; GeoB7180-1; GeoB7181-1; GeoB7182-1; GeoB7183-1; GeoB7186-1; GeoB7187-1; GeoB7189-1; GeoB7190-1; GeoB7191-1; GeoB7192-1; GeoB7193-1; GeoB7194-1; GeoB7195-1; GeoB7197-1; GeoB7198-1; GeoB7199-2; GeoB7200-1; GeoB7201-1; GeoB7202-1; GeoB7203-1; GeoB7204-1; GeoB7205-1; GeoB7207-1; GeoB7208-1; GeoB7209-2; GeoB7211-1; GeoB7212-1; GeoB7213-1; GeoB7214-1; GeoB7215-1; GeoB7216-1; GeoB7217-1; GeoB7218-1; GeoB7219-1; GeoB7220-1; Geosciences, University of Bremen; MARUM; MUC; MultiCorer; off Chile; PUCK; SO156/1; SO156/2; SO156/3; Sonne
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 5
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    Surface sediment samples from the Chilean continental slope between 23°S and 44°S with the stable isotopic data of Neogloboquadrina pachyderma dextral and Globigerina bulloides
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Center for Marine Environmental Sciences; DEPTH, sediment/rock; Elevation of event; Event label; GeoB; GeoB7115-1; GeoB7121-1; GeoB7122-2; GeoB7123-1; GeoB7127-1; GeoB7129-1; GeoB7130-1; GeoB7131-1; GeoB7132-1; GeoB7133-1; GeoB7134-1; GeoB7135-1; GeoB7136-1; GeoB7137-2; GeoB7138-1; GeoB7139-1; GeoB7140-1; GeoB7141-1; GeoB7142-2; GeoB7143-1; GeoB7144-1; GeoB7145-1; GeoB7146-1; GeoB7147-1; GeoB7148-1; GeoB7149-1; GeoB7150-1; GeoB7152-1; GeoB7153-1; GeoB7154-2; GeoB7156-1; GeoB7157-1; GeoB7158-1; GeoB7186-1; GeoB7187-1; GeoB7189-1; GeoB7190-1; GeoB7191-1; GeoB7192-1; GeoB7198-1; GeoB7199-2; GeoB7200-1; GeoB7207-1; GeoB7208-1; GeoB7209-2; Geosciences, University of Bremen; Globigerina bulloides, δ13C; Globigerina bulloides, δ18O; LATITUDE; LONGITUDE; MARUM; Mass spectrometer Finnigan MAT 251; MUC; MultiCorer; Neogloboquadrina pachyderma dextral, δ13C; Neogloboquadrina pachyderma dextral, δ18O; off Chile; PUCK; SO156/2; SO156/3; Sonne
    Type: Dataset
    Format: text/tab-separated-values, 156 data points
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    DATA PANGAEA
  • 6
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    Faunal distribution of the most important planktic foraminiferal species in the investigated surface sediment samples from the Chilean continental slope between 23°S and 44°S
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Center for Marine Environmental Sciences; Comment; Counting, foraminifera, planktic; DEPTH, sediment/rock; Elevation of event; Event label; Foraminifera, planktic; GeoB; GeoB7103-4; GeoB7104-5; GeoB7106-1; GeoB7108-3; GeoB7112-1; GeoB7114-1; GeoB7115-1; GeoB7116-1; GeoB7118-1; GeoB7119-1; GeoB7120-1; GeoB7121-1; GeoB7122-2; GeoB7123-1; GeoB7127-1; GeoB7129-1; GeoB7130-1; GeoB7131-1; GeoB7132-1; GeoB7133-1; GeoB7134-1; GeoB7135-1; GeoB7136-1; GeoB7137-2; GeoB7138-1; GeoB7139-1; GeoB7140-1; GeoB7141-1; GeoB7142-2; GeoB7143-1; GeoB7144-1; GeoB7145-1; GeoB7146-1; GeoB7147-1; GeoB7148-1; GeoB7149-1; GeoB7150-1; GeoB7152-1; GeoB7153-1; GeoB7154-2; GeoB7156-1; GeoB7157-1; GeoB7158-1; GeoB7159-1; GeoB7160-3; GeoB7162-3; GeoB7163-4; GeoB7166-2; GeoB7167-3; GeoB7171-2; GeoB7172-3; GeoB7173-4; GeoB7174-2; GeoB7175-4; GeoB7177-2; GeoB7179-1; GeoB7180-1; GeoB7181-1; GeoB7182-1; GeoB7183-1; GeoB7186-1; GeoB7187-1; GeoB7189-1; GeoB7190-1; GeoB7191-1; GeoB7192-1; GeoB7193-1; GeoB7194-1; GeoB7195-1; GeoB7197-1; GeoB7198-1; GeoB7199-2; GeoB7200-1; GeoB7201-1; GeoB7202-1; GeoB7203-1; GeoB7204-1; GeoB7205-1; GeoB7207-1; GeoB7208-1; GeoB7209-2; GeoB7211-1; GeoB7212-1; GeoB7213-1; GeoB7214-1; GeoB7215-1; GeoB7216-1; GeoB7217-1; GeoB7218-1; GeoB7219-1; GeoB7220-1; Geosciences, University of Bremen; Globigerina bulloides; Globigerina falconensis; Globigerinella calida; Globigerinita glutinata; Globigerinita iota; Globigerinoides ruber; Globigerinoides tenellus; Globorotalia crassaformis; Globorotalia inflata; Globorotalia scitula; Globorotalia truncatulinoides; Globorotalia tumida; Globorotaloides hexagonus; Globoturborotalita rubescens; Hastigerina digitata; Latitude of event; Longitude of event; MARUM; MUC; MultiCorer; Neogloboquadrina dutertrei; Neogloboquadrina pachyderma dextral; Neogloboquadrina pachyderma sinistral; off Chile; Orbulina universa; PUCK; Pulleniatina obliquiloculata; SO156/1; SO156/2; SO156/3; Sonne; split; Split; Turborotalita quinqueloba
    Type: Dataset
    Format: text/tab-separated-values, 2128 data points
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    DATA PANGAEA
  • 7
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    Stable isotope measurements of benthic foraminifera in surface sediment cores (2005)
    PANGAEA
    In:  MARUM - Center for Marine Environmental Sciences, University Bremen
    Details
    Publication Date: 2023-06-27
    Keywords: Calculated, see reference(s); Center for Marine Environmental Sciences; Cibicides elmaensis, δ13C; Cibicides elmaensis, δ18O; Cibicidoides wuellerstorfi, δ13C; Cibicidoides wuellerstorfi, δ18O; CTD/Rosette; CTD-RO; DEPTH, sediment/rock; Elevation of event; Event label; Foraminifera, benthic; GeoB7103-4; GeoB7104-5; GeoB7106-1; GeoB7108-3; GeoB7112-1; GeoB7114-1; GeoB7115-1; GeoB7116-1; GeoB7118-1; GeoB7119-1; GeoB7120-1; GeoB7121-1; GeoB7122-2; GeoB7123-1; GeoB7127-1; GeoB7129-1; GeoB7130-1; GeoB7131-1; GeoB7132-1; GeoB7133-1; GeoB7134-1; GeoB7135-1; GeoB7136-1; GeoB7137-2; GeoB7138-1; GeoB7139-1; GeoB7140-1; GeoB7141-1; GeoB7142-2; GeoB7143-1; GeoB7144-1; GeoB7145-1; GeoB7146-1; GeoB7147-1; GeoB7148-1; GeoB7149-1; GeoB7150-1; GeoB7152-1; GeoB7153-1; GeoB7154-2; GeoB7156-1; GeoB7157-1; GeoB7158-1; GeoB7159-1; GeoB7160-4; GeoB7162-4; GeoB7163-4; GeoB7163-5; GeoB7166-3; GeoB7167-4; GeoB7171-2; GeoB7172-5; GeoB7173-5; GeoB7174-1; GeoB7175-1; GeoB7177-1; GeoB7179-1; GeoB7180-1; GeoB7181-1; GeoB7182-1; GeoB7183-2; GeoB7186-1; GeoB7187-1; GeoB7189-1; GeoB7190-1; GeoB7191-1; GeoB7192-1; GeoB7193-1; GeoB7194-1; GeoB7195-1; GeoB7197-1; GeoB7198-1; GeoB7199-2; GeoB7200-1; GeoB7201-1; GeoB7202-1; GeoB7203-1; GeoB7204-1; GeoB7205-1; GeoB7207-1; GeoB7208-1; GeoB7209-2; GeoB7211-1; GeoB7212-1; GeoB7213-1; GeoB7214-1; GeoB7215-1; GeoB7216-1; GeoB7217-1; GeoB7218-1; GeoB7219-1; GeoB7220-1; Latitude of event; Longitude of event; MARUM; Mass spectrometer Finnigan MAT 251; MG; MUC; Multiboxcorer; MultiCorer; off Chile; PUCK; SO156/1; SO156/2; SO156/3; Sonne
    Type: Dataset
    Format: text/tab-separated-values, 164 data points
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    DATA PANGAEA
  • 8
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    Planktic/Benthic (P/B) ratio, total alkenones, benthic foraminiferal accumulation rate (BFAR) and benthic foraminiferal abundance in sediment core GeoB3327-5 (2020)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Description: This data set contains Planktic/Benthic + Planktic (P/B+P) ratio, Total alkenones concentrations, Alkenones accumulation rate , Benthic foraminiferal accumulation rate (BFAR) and benthic foraminiferal abundance in GeoB3327-5. The Humboldt Current System (HCS) is characterized by high marine primary productivity, the dynamics of which are closely linked to climate variability. However, its changes beyond the last glacial cycle are virtually unknow due to a dearth of long sediment records. Here we present a 500 ka multi-proxy marine productivity reconstruction from the southernmost part of the HCS (~43º S). At these latitudes, changes in marine productivity have been typically attributed to glacial-interglacial changes in the South Pacific Subtropical High (SPSH) and Southern Westerlies Winds (SWWs).
    Keywords: Accumulation rate, alkenone C37; Accumulation rate, number of benthic foraminifera; AGE; Alkenone, C37 total (C37:2+C37:3); Benthic foraminifera; CHIPAL; Cibicides spp., δ18O; Cibicidoides wuellerstorfi; DEPTH, sediment/rock; Discorbis peruvianus; Eggerella bradyi; Foraminifera, benthic; Foraminifera, benthic, other; Foraminifera, planktic; Foraminifera, planktic/benthic ratio; GeoB3327-5; Globocassidulina subglobosa; Gravity corer (Kiel type); Gyroidina soldanii; Humboldt Current System; Oridorsalis umbonatus; paleoproductivity; Pullenia bulloides; SL; SO102/1; Sonne; Southeast Pacific; South-East Pacific; Uvigerina peregrina
    Type: Dataset
    Format: text/tab-separated-values, 2681 data points
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    DATA PANGAEA
  • 9
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    Fluxes and foraminifera fluxes of sediment traps in the Peru-Chile Current (2000)
    PANGAEA
    In:  Supplement to: Hebbeln, Dierk; Marchant, Margarita; Wefer, Gerold (2000): Seasonal variations of the particle flux in the Peru-Chile Current at 30°S under normal and El Nino conditions. Deep Sea Research Part II: Topical Studies in Oceanography, 47(9-11), 2101-2128, https://doi.org/10.1016/S0967-0645(00)00018-7
    Details
    Publication Date: 2024-02-01
    Description: Time-series sediment traps were deployed 180 km off the Chilean coast at 30°S in the Peru-Chile Current during the El Niño period 1991/1992 (6 months) and during the 'normal' period 1993/1994 (12 months). Under normal conditions in 1993/1994 the particle fluxes display a pronounced seasonal cycle marked by a settling phytoplankton bloom in September, intermediate fluxes until January, and low fluxes between January and July. This seasonal pattern is also reflected in stable isotope data, measured on the planktic foraminifera species Neogloboquadrina pachyderma (dex.) and Globigerina bulloides, which indicate persistent upwelling conditions between August and February followed by a stratified water column between March and July. The total flux under normal conditions amounts to 65.1 g m**-2 a**-1, with the main flux constituents contributing 47.6% (carbonate), 26.4% (lithogenic matter), 17.4% (biogenic opal), and 8.6% (organic matter), respectively. Based on these particle flux data the export production has been estimated to be 42 gC m**-2 a**-1. Although the main flux event in September was not sampled in the El Niño period 1991/1992, the available record from November 1991 to April 1992 allows an interesting comparison with the fluxes of the normal year. The total amount of fluxes and the timing of minor flux events are very similar under normal and under El Niño conditions. However, increased proportions of organic carbon and lithogenic matter under El Niño conditions are interpreted to reflect faster sedimentation and preferred scavenging of organic matter by elevated lithogenic fluxes rather than increased productivity. The higher lithogenic fluxes under El Niño conditions are probably due to increased precipitation and terrestial runoff in the arid to semiarid northern part of Chile.
    Keywords: CH3-1_trap; CH4-1_trap; JGOFS; Joint Global Ocean Flux Study; OCEMOS 1; OCEMOS 2; off Chile; Trap; TRAP
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 10
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    Foraminifera flux data of trap CH3-1 (2000)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: Calculated; Calculated, see reference(s); CH3-1_trap; DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; Foraminifera, planktic, flux; Globigerina bulloides, flux; Globigerinella calida, flux; Globigerinita glutinata, flux; Globigerinita uvula, flux; Globigerinoides ruber, flux; Globorotalia inflata, flux; Globorotalia menardii, flux; Globorotalia scitula, flux; Globorotalia truncatulinoides, flux; Globorotaloides hexagonus, flux; JGOFS; Joint Global Ocean Flux Study; Neogloboquadrina dutertrei, flux; Neogloboquadrina pachyderma dextral, flux; Neogloboquadrina pachyderma sinistral, flux; OCEMOS 1; off Chile; Orbulina universa, flux; Sample code/label; Tenuitella iota, flux; Trap; TRAP; Turborotalita quinqueloba, flux
    Type: Dataset
    Format: text/tab-separated-values, 400 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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