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  • 1
    Book
    Book
    Response of deep-sea benthic foraminifera to simulated phytodetritus pulses under laboratory conditions (1999)
    Tübingen : Institut und Museum für Geologie und Paläontologie, Univ. Tübingen
    Details Availability
    Keywords: Forschungsbericht ; Dissertation ; Hochschulschrift ; Foraminiferen ; Benthos ; Tiefseetiere ; Detritus ; Pflanzen ; Mittelmeer ; Tiefsee ; Foraminiferen ; Ernährung ; Experiment
    Type of Medium: Book
    Pages: II, 126 S. , Ill., graph. Darst., Kt.
    Series Statement: Tuebinger mikropalaeontologische Mitteilungen 20
    RVK:
    TQ 1044
    Language: English
    Note: Zugl.: Tübingen, Univ., Diss., 1999
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  • 2
    Online Resource
    Online Resource
    Impact of elevated pCO2 on benthic foraminifera from the southwestern Baltic Sea (2013)
    Kiel
    Details Availability
    Keywords: Hochschulschrift ; Ostsee Südwest ; Foraminiferen
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (202 Blatt = 9 MB) , Illustrationen
    URL: http://nbn-resolving.de/urn:nbn:de:gbv:8-diss-124604
    URL: http://d-nb.info/1036872114
    URL: http://macau.uni-kiel.de/receive/dissertation_diss_00012460
    URN: urn:nbn:de:gbv:8-diss-124604
    DDC: 570
    Language: English
    Note: Zusammenfassung in deutscher und englischer Sprache
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  • 3
    Online Resource
    Online Resource
    Bodennaher Partikelfluß, Habitatsansprüche benthischer Foraminiferen und frühdiagenetische Prozesse in der Tiefsee (2001)
    Tübingen : : Inst. und Museum für Geologie und Paläontologie, Univ.
    Details Availability
    Description / Table of Contents: Benthic foraminifera, recent, deep-sea, Arabian Sea, NE-Atlantic, in situ experiment, turn over processes, microhabitat
    Type of Medium: Online Resource
    Pages: Online-Ressource (p. 112 - 137 = 305 KB) , graphs
    Edition: [Elektronische Ressource]
    Series Statement: Biogeochemische Stoff- und Energietransporte in der Tiefsee, BIGSET II : BIGSET Abschlußbericht Teilprojekt 5
    URL: https://edocs.tib.eu/files/e01fb02/359342930.pdf
    URL: https://edocs.tib.eu/files/e01fb02/359342930l.pdf
    Language: German
    Note: Contract BMBF 03F0273 C. - Differences between the printed and electronic version of the document are possible. - nBibliography p. 134 - 135. - nIndex p. 136 - 137. - Engl. title: Particle fluxes in the bottom nepheloid layer, habitat demands of benthic foraminifera and early diagenetic processes in the deep-sea , Also available as printed version , Systemvoraussetzungen: Acrobat Reader.
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  • 4
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    Living benthic foraminifera in sediments influenced by gas hydrates at the Cascadia convergent margin, NE Pacific (2005)
    Inter Research
    In:  Marine Ecology Progress Series, 304 . pp. 77-89.
    Details
    Publication Date: 2018-05-31
    Description: Living (Rose Bengal stained) foraminifera in gas-hydrate-influenced sediments at the Cascadia convergent margin were investigated. Foraminiferal assemblages from the southern Hydrate Ridge and neighboring basins were compared in terms of abundances, vertical distribution, diversity, and species composition. At Hydrate Ridge, the presence of shallow gas hydrates and increased porewater sulfide concentrations was indicated by extensive bacterial mats of Beggiatoa sp. and clam beds of the bivalve mollusk Calyptogena sp., generating different biological zones. Living foraminifera were found in all biological zones, in sediment layers down to 5 cm. They showed highly variable densities within all zones. The average abundance of benthic foraminifera at Hydrate Ridge differs from neighboring basins. Average species diversities are comparable between biological zones, while the average number of species increases from bacterial mats to clam fields and surrounding sediments. Foraminifera can be characterized by 5 principal component communities which explain 97.3% of the variance of the live assemblages at the southern Hydrate Ridge and neighboring basins. At Hydrate Ridge, 2 foraminiferal zones can be distinguished: (1) an Uvigerina peregrina community which characterizes sediments covered with bacterial mats and clam fields; (2) a ?Spiroplectammina biformis community in the surrounding non-seep sediments. Foraminiferal assemblages in the neighboring Western and Eastern Basin differ from the Hydrate Ridge stations.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.3354/meps304077
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 5
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    Assimilation of Particular Organic Matter and Dissolved Organic or Inorganic Compounds by Cribroelphidium selseyense (Foraminifera) (2021)
    Frontiers
    Details
    Publication Date: 2024-02-07
    Description: Marine carbon and nitrogen processing through microorganisms’ metabolism is an important aspect of the global element cycles. For that purpose, we used foraminifera to analyze the element turnover with different algae food sources. In the Baltic Sea, benthic foraminifera are quite common and therefore it is important to understand their metabolism. Especially, Cribroelphidium selseyense, also occurring in the Baltic Sea, has often been used for laboratory feeding experiments to test their effect on carbon or nitrogen turnover. Therefore, foraminifera were collected from the Kiel Fjord and fed with six different algal species in two qualities (freeze-dried algae vs. fresh algae, all 13C- and 15N-labeled). Also, labeled dissolved inorganic C and N compounds and glucose were offered to the foraminifera to test direct assimilation of dissolved compounds (carbon and nitrogen) from the water column. Our experiments showed that after 15 days of incubation, there were highly significant differences in isotope labeling in foraminifera fed with fresh algae and dry algae, depending on algal species. Further, different algal species led to different 13C and 15N enrichment in the studied foraminifera, highlighting a feeding preference for one diatom species and an Eustigmatophyte. A significant carbon assimilation from HCO3– was observed after 7 days of incubation. The N assimilation from NH4+ was significantly higher than for NO3– as an inorganic N source. The uptake of glucose showed a lag phase, which was often observed during past experiments, where foraminifera were in a steady state and showed no food uptake at regular intervals. These results highlight the importance of food quality on the feeding behavior and metabolic pathways for further studies of foraminiferal nutrition and nutrient cycling.
    Type: Article , PeerReviewed
    Format: text
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 6
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    Relationship between menopausal hormone therapy and mortality after breast cancer (2015)
    Wiley-Blackwell
    Details
    Publication Date: 2015-12-10
    Description: Cohort studies of breast cancer (BC) patients, but not of disease-free women at inclusion, have found menopausal hormone therapy (MHT) to be associated with decreased BC specific mortality (BCM). Here, the German population-based MARIE plus BC cohort was analyzed to further elucidate associations of pre-diagnostic MHT with BCM (and modification by tumor characters), recurrence, and secondarily with other cause and overall mortality. Enrolled 2002-2005, incident invasive BC cases (N = 3321) were followed up for a median of 6.1 years. Cox proportional hazards models adjusted for tumor characteristics, mammography and lifestyle were applied. Compared with never users of MHT, current users at date of diagnosis had significantly lower BCM (Hazard ratio (HR) 0.72, 95% CI 0.53-0.97) and risk of recurrence (HR 0.61, 95% CI 0.46-0.82). The MHT related reduced BCM was confined to patients with low grade tumors (HR 0.44, 95% CI 0.28-0.70; phet= 0.01) and not modified by estrogen receptor or nodal status. BCM decreased with MHT duration in current and increased in past users (phet = 0.015). Mortality due to causes other than BC and overall mortality were also reduced in current MHT users (HR 0.51, 95% CI 0.32-0.81, HR 0.66, 95% CI 0.52-0.86, respectively). Favorable tumor characteristics and mammographic surveillance could not fully explain associations of current MHT use with BCM and recurrence risk. Thus, the study contributes to the evidence that pre-diagnostic MHT does not have a negative impact on prognosis after BC. The restriction of a reduced BCM to low grade tumors should be confirmed in independent studies. This article is protected by copyright. All rights reserved.
    Print ISSN: 0020-7136
    Electronic ISSN: 1097-0215
    Topics: Biology , Medicine
    Published by Wiley-Blackwell
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  • 7
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    Elastin is heterogeneously cross-linked [Glycobiology and Extracellular Matrices] (2018)
    The American Society for Biochemistry and Molecular Biology (ASBMB)
    Details
    Publication Date: 2018-09-29
    Description: Elastin is an essential vertebrate protein responsible for the elasticity of force-bearing tissues such as those of the lungs, blood vessels, and skin. One of the key features required for the exceptional properties of this durable biopolymer is the extensive covalent cross-linking between domains of its monomer molecule tropoelastin. To date, elastin's exact molecular assembly and mechanical properties are poorly understood. Here, using bovine elastin, we investigated the different types of cross-links in mature elastin to gain insight into its structure. We purified and proteolytically cleaved elastin from a single tissue sample into soluble cross-linked and noncross-linked peptides that we studied by high-resolution MS. This analysis enabled the elucidation of cross-links and other elastin modifications. We found that the lysine residues within the tropoelastin sequence were simultaneously unmodified and involved in various types of cross-links with different other domains. The Lys–Pro domains were almost exclusively linked via lysinonorleucine, whereas Lys–Ala domains were found to be cross-linked via lysinonorleucine, allysine aldol, and desmosine. Unexpectedly, we identified a high number of intramolecular cross-links between lysine residues in close proximity. In summary, we show on the molecular level that elastin formation involves random cross-linking of tropoelastin monomers resulting in an unordered network, an unexpected finding compared with previous assumptions of an overall beaded structure.
    Print ISSN: 0021-9258
    Electronic ISSN: 1083-351X
    Topics: Biology , Chemistry and Pharmacology
    Published by The American Society for Biochemistry and Molecular Biology (ASBMB)
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  • 8
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    Assemblage of living benthic foraminifera in sediment core SO119_MC501, 30-63 µm fraction (2006)
    PANGAEA
    Details
    Publication Date: 2023-02-12
    Keywords: Alliatina primitiva; Ammobaculites sp.; Arabian Sea; BIGSET; Biogeochemical Fluxes of Matter and Energy in the Deep Sea; Bolivina pacifica; Bolivina spp.; Bulimina alazanensis; Bulimina spp.; Buliminella sp.; Counting 30-63 µm fraction; DEPTH, sediment/rock; Epistominella exigua; Epistominella pusilla; Foraminifera, benthic agglutinated indeterminata; Foraminifera, benthic calcareous indeterminata; Fursenkoina spp.; Globocassidulina subglobosa; Gyroidinoides sp.; Gyroidinoides umbonatus; Hippocrepina indivisa; JGOFS-IN-2; Miliolinella oblonga; Miliolinella rotunda; MUC; MultiCorer; Nodellum membranaceum; Nonionella bradyi; Nonionella spp.; Reophax micaceus; Reophax scorpiurus; Reophax scotti; Reophax spp.; Robertinoides subzylindrica; Rosalina sp.; Saccammina sp.; SO119; SO119_MC501; Sonne; Spirillina sp.; Spiroplectinella sp.; Textularia spp.; Trochammina inflata; Trochammina spp.; Valvulineria sp.; Virgulina texturata
    Type: Dataset
    Format: text/tab-separated-values, 280 data points
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  • 9
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    Assemblage of living benthic foraminifera in sediment core SO117_MC464, 30-63 µm fraction (2006)
    PANGAEA
    Details
    Publication Date: 2023-02-12
    Keywords: 7/30; Allogromides sp.; Arabian Sea; BIGSET; Biogeochemical Fluxes of Matter and Energy in the Deep Sea; Bolivina pygmaea; Buliminella sp.; Counting 30-63 µm fraction; DEPTH, sediment/rock; Epistominella pusilla; Foraminifera, benthic agglutinated indeterminata; Foraminifera, benthic calcareous indeterminata; Fursenkoina spp.; Hippocrepina indivisa; JGOFS-IN-1; MUC; MultiCorer; Oridorsalis cf. umbonatus; Oridorsalis umbonatus; SO117; SO117_MC464; Sonne; Trochammina inflata
    Type: Dataset
    Format: text/tab-separated-values, 77 data points
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  • 10
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    Assemblage of living benthic foraminifera in sediment core SO117_MC468, 30-63 µm fraction (2006)
    PANGAEA
    Details
    Publication Date: 2023-02-12
    Keywords: 23/25; Allogromides sp.; Arabian Sea; BIGSET; Biogeochemical Fluxes of Matter and Energy in the Deep Sea; Bolivina pygmaea; Buliminella sp.; Counting 30-63 µm fraction; DEPTH, sediment/rock; Epistominella pusilla; Foraminifera, benthic agglutinated indeterminata; Foraminifera, benthic calcareous indeterminata; Fursenkoina spp.; Hippocrepina indivisa; JGOFS-IN-1; MUC; MultiCorer; Oridorsalis cf. umbonatus; Oridorsalis umbonatus; SO117; SO117_MC468; Sonne; Trochammina inflata
    Type: Dataset
    Format: text/tab-separated-values, 77 data points
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