ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Data  (10)
  • 2010-2014  (7)
  • 2000-2004  (1)
  • 1995-1999  (2)
Collection
Keywords
Publisher
Years
Year
  • 1
    Publication Date: 2023-01-14
    Keywords: DATE/TIME; DEPTH, water; Ganssen1991; LATITUDE; LONGITUDE; OCE; Oceanography; δ18O, water
    Type: Dataset
    Format: text/tab-separated-values, 37 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Nederbragt, Alexandra J; Erlich, Robert N; Fouke, Bruce W; Ganssen, Gerald M (1998): Palaeoecology of the biserial planktonic foraminifer Heterohelix moremani (Cushman) in the late Albian to middle Turonian Circum-North Atlantic. Palaeogeography, Palaeoclimatology, Palaeoecology, 144(1-2), 115-133, https://doi.org/10.1016/S0031-0182(98)00089-3
    Publication Date: 2023-07-11
    Description: The Cretaceous Heterohelix moremani (Cushman) was the only biserial planktonic foraminiferal species from its first appearance in the late Albian up to the Cenomanian/Turonian boundary. Within that time, it increased gradually in abundance relative to other planktonic foraminifera in five Circum-North Atlantic sections. It is generally rare in upper Albian sediments, common in most of the Cenomanian and very abundant in sediments representing the latest Cenomanian Oceanic Anoxic Event. Short-term variations on the overall abundance trend correlate with positive excursions in the bulk carbonate delta13C record. Maximum rain rates of H. moremani during OAE2 show that this species was an opportunist that did well in extreme conditions, but its overall distribution indicates that it is not necessarily a marker for very high palaeoproductivity environments. Stable oxygen and carbon isotope measurements on foraminiferal species indicate that H. moremani was a surface water dweller at least in part of its geographic range, but incorporated 13C out of equilibrium with ambient seawater. It is depleted in delta13C relative to other planktonic foraminifera, which is attributed to vital effects related to its opportunistic character.
    Keywords: 14-137; 80-551; Counting, foraminifera, planktic; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Foraminifera, benthic δ13C; Foraminifera, benthic δ18O; Glomar Challenger; Guembelitria cenomana, δ13C; Guembelitria cenomana, δ18O; Hedbergella delrioensis, δ13C; Hedbergella delrioensis, δ18O; Heterohelix moremani; Heterohelix moremani, δ13C; Heterohelix moremani, δ18O; Isotope ratio mass spectrometry; Leg14; Leg80; North Atlantic/ESCARPMENT; North Atlantic/HILL; ORDINAL NUMBER; Praeglobotruncana spp., δ13C; Praeglobotruncana spp., δ18O; Rotalipora cushmani, δ13C; Rotalipora cushmani, δ18O; Rotalipora gandolfii, δ13C; Rotalipora gandolfii, δ18O; Sample code/label; δ13C, carbonate; δ18O, carbonate
    Type: Dataset
    Format: text/tab-separated-values, 58 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: van Eijden, AJM; Ganssen, Gerald M (1995): An Oligocene multi-species foraminiferal oxygen and carbon isotope record from ODP Hole 758A (Indian Ocean): paleoceanographic and paleo-ecologic implications. Marine Micropaleontology, 25(1), 47-65, https://doi.org/10.1016/0377-8398(94)00028-L
    Publication Date: 2024-01-09
    Description: An Oligocene-basal Miocene (Zones P19-P22/N4) oxygen and carbon isotope stratigraphy is presented based on mixed benthic foraminiferal faunas and different species of planktic foraminifers from Eastem Indian Ocean ODP Hole 758A. Lack of covariance in planktic and benthic delta18O ratios indicates that many Oligocene sea level fluctuations, including the major fall at 30 Ma, are not of glacio-eustatic origin. Delta18O values suggest that test morphology is a poor indicator of preferred depth habitat of Oligocene planktic foraminifers. Also, some groups show considerable shifts in preferred depth habitat. Reconstructed surface water temperature was nearly constant during the investigated period, but even assuming a large Antarctic icecap, values are unrealistically low, 18°-20°C. Most likely, water masses with markedly different oxygen isotopic composition existed, this poses great problems for quantitative temperature reconstructions. Planktic foraminiferal species show similar delta13C ratios, indicating well-mixed surface waters. This contrasts with the strong oxygen isotopic gradient, which suggests well-stratified surface waters. During the Oligocene the difference in delta13C ratio between the average ratio of planktic foraminiferal species and the benthic foraminifers (Delta delta13C P-B') shows an inverse relation with the known circulation intensity record and thus with productivity. This Delta delta13C pattern is interpreted as being caused by the presence of younger bottom waters at this site during periods with lower temperatures and/or larger Antarctic ice sheets.
    Keywords: 121-758A; Catapsydrax dissimilis, δ13C; Catapsydrax dissimilis, δ18O; Catapsydrax spp., δ13C; Catapsydrax spp., δ18O; Catapsydrax unicavus, δ13C; Catapsydrax unicavus, δ18O; Comment; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Fohsella kugleri, δ13C; Fohsella kugleri, δ18O; Foraminifera, benthic δ13C; Foraminifera, benthic δ18O; Foraminifera, planktic δ13C; Foraminifera, planktic δ18O; Globigerina binaiensis, δ13C; Globigerina binaiensis, δ18O; Globigerina euapertura, δ13C; Globigerina euapertura, δ18O; Globigerina galavisi, δ13C; Globigerina galavisi, δ18O; Globigerina sellii, δ13C; Globigerina sellii, δ18O; Globigerina tripartita, δ13C; Globigerina tripartita, δ18O; Globorotaloides suteri, δ13C; Globorotaloides suteri, δ18O; Indian Ocean; Jenkinsella spp., δ13C; Jenkinsella spp., δ18O; Joides Resolution; Leg121; Mass spectrometer Finnigan MAT 251; Ocean Drilling Program; ODP; ORDINAL NUMBER; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 418 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2024-04-13
    Keywords: 905B; BC; Box corer; DEPTH, water; EPOCA; European Project on Ocean Acidification; Indian Ocean; Mass; Mass, brutto; Mass, tara; NIOP-C2; Number of tests; Sample comment; Size fraction; Species; Tyro
    Type: Dataset
    Format: text/tab-separated-values, 84 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: de Moel, Hans; Ganssen, Gerald M; Peeters, Frank J C; Jung, Simon J A; Kroon, Dick; Brummer, Geert-Jan A; Zeebe, Richard E (2009): Planktic foraminiferal shell thinning in the Arabian Sea due to anthropogenic ocean acidification? Biogeosciences, 6, 1917-1925, https://doi.org/10.5194/bg-6-1917-2009
    Publication Date: 2024-04-13
    Description: About one third of the anthropogenic carbon dioxide (CO2) released into the atmosphere in the past two centuries has been taken up by the ocean. As CO2 invades the surface ocean, carbonate ion concentrations and pH are lowered. Laboratory studies indicate that this reduces the calcification rates of marine calcifying organisms, including planktic foraminifera. Such a reduction in calcification resulting from anthropogenic CO2 emissions has not been observed, or quantified in the field yet. Here we present the findings of a study in the Western Arabian Sea that uses shells of the surface water dwelling planktic foraminifer Globigerinoides ruber in order to test the hypothesis that anthropogenically induced acidification has reduced shell calcification of this species. We found that light, thin-walled shells from the surface sediment are younger (based on 14C and d13C measurements) than the heavier, thicker-walled shells. Shells in the upper, bioturbated, sediment layer were significantly lighter compared to shells found below this layer. These observations are consistent with a scenario where anthropogenically induced ocean acidification reduced the rate at which foraminifera calcify, resulting in lighter shells. On the other hand, we show that seasonal upwelling in the area also influences their calcification and the stable isotope (d13C and d18O) signatures recorded by the foraminifera shells. Plankton tow and sediment trap data show that lighter shells were produced during upwelling and heavier ones during non-upwelling periods. Seasonality alone, however, cannot explain the 14C results, or the increase in shell weight below the bioturbated sediment layer. We therefore must conclude that probably both the processes of acidification and seasonal upwelling are responsible for the presence of light shells in the top of the sediment and the age difference between thick and thin specimens.
    Keywords: 905B; BC; BC21WP7; Box corer; EPOCA; European Project on Ocean Acidification; Indian Ocean; NIOP-B0/C0; NIOP-C2; Tyro
    Type: Dataset
    Format: application/zip, 6 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2024-04-13
    Keywords: BC; BC21WP7; Box corer; Category; Comment; EPOCA; European Project on Ocean Acidification; Indian Ocean; Mass; NIOP-B0/C0; Number of tests; Percentage; Size fraction; Tyro
    Type: Dataset
    Format: text/tab-separated-values, 74 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2024-04-13
    Keywords: Average; BC; BC21WP7; Box corer; Comment; EPOCA; European Project on Ocean Acidification; Image number/name; Indian Ocean; NIOP-B0/C0; Tyro; x; y; z
    Type: Dataset
    Format: text/tab-separated-values, 120 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2024-04-13
    Keywords: BC; BC21WP7; Box corer; Comment; DEPTH, sediment/rock; EPOCA; European Project on Ocean Acidification; Globigerinoides ruber, δ13C; Globigerinoides ruber, δ18O; Indian Ocean; NIOP-B0/C0; Tyro
    Type: Dataset
    Format: text/tab-separated-values, 373 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2024-04-13
    Keywords: 905B; BC; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EPOCA; European Project on Ocean Acidification; Indian Ocean; Mass; Mass, brutto; Mass, tara; NIOP-C2; Number of tests; Tyro
    Type: Dataset
    Format: text/tab-separated-values, 169 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2024-04-13
    Keywords: Age, 14C AMS; Age, 14C conventional; Age, dated; Age, dated material; Age, dated standard deviation; BC; BC21WP7; Box corer; DEPTH, sediment/rock; Description; EPOCA; European Project on Ocean Acidification; Indian Ocean; NIOP-B0/C0; Sample, optional label/labor no; Tyro; δ13C; δ13C, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 18 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...