GLORIA

GEOMAR Library Ocean Research Information Access

X
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
  • ASLO (Association for the Sciences of Limnology and Oceanography)  (8)
  • Berlin : Heinrich-Böll-Stiftung  (3)
  • Kiel : Inst. für Meereskunde  (2)
  • 1
    Book
    Book
    Bildung, Zusammensetzung und Sinkgeschwindigkeiten mariner Aggregate (1998)
    Kiel : Inst. für Meereskunde
    Details Availability
    Keywords: Report ; Dissertation ; Forschungsbericht ; Hochschulschrift
    Type of Medium: Book
    Pages: 145 S , Ill., graph. Darst
    Series Statement: Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel 300
    Language: German
    Note: Literaturverz. S. 137 - 144 , Zugl.: Kiel, Univ., Diss., 1998
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 2
    Online Resource
    Online Resource
    Bildung, Zusammensetzung und Sinkgeschwindigkeiten mariner Aggregate (2017)
    Kiel : Inst. für Meereskunde
    Details Availability
    Keywords: Report ; Dissertation ; Hochschulschrift
    Type of Medium: Online Resource
    Pages: Online-Ressource (148 Seiten, 7 MB) , Illustrationen, Diagramme, Karten
    Series Statement: Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel 300
    URL: https://oceanrep.geomar.de/20566/
    URL: http://dx.doi.org/10.3289/IFM_BER_300
    DOI: 10.3289/IFM_BER_300
    Language: German
    Note: Zusammenfassung in deutscher und englischer Sprache
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 3
    Book
    Book
    Ocean atlas : facts and figures about our relationship with the ocean (2017)
    Berlin : Heinrich-Böll-Stiftung
    Details Availability
    Keywords: Atlas ; Meer ; Überfischung ; Meeresverschmutzung ; Meeresökosystem ; Naturschutz
    Description / Table of Contents: The publishers – the Heinrich Böll Stiftung Schleswig-Holstein, the Heinrich Böll Stiftung (national foundation), the University of Kiel Future Ocean Cluster of Excellence and the monthly magazine “Le Monde diplomatique” – want to point out the most important dimensions of our interaction with the ocean and its coasts. According to them, it is imperative to rethink our relationship with the ocean and its resources that are important parts of our environment and that urgently need international protection. On 23 graphically illustrated double pages the Atlas provides compact knowledge and current data on the ocean.
    Type of Medium: Book
    Pages: 50 Seiten
    Parallel Title: Übersetzung von Meeresatlas
    Parallel Title: Pösel, Natascha Parallele Sprachausgabe Atlas de los océanos
    Language: English
    Note: The publishers – the Heinrich Böll Stiftung Schleswig-Holstein, the Heinrich Böll Stiftung (national foundation), the University of Kiel Future Ocean Cluster of Excellence and the monthly magazine “Le Monde diplomatique” – want to point out the most important dimensions of our interaction with the ocean and its coasts. According to them, it is imperative to rethink our relationship with the ocean and its resources that are important parts of our environment and that urgently need international protection. On 23 graphically illustrated double pages the Atlas provides compact knowledge and current data on the ocean
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 4
    Map
    Map
    Meeresatlas : Daten und Fakten über unseren Umgang mit dem Ozean (2017)
    Berlin : Heinrich-Böll-Stiftung
    Details Availability
    Keywords: Atlas ; Meereskunde
    Description / Table of Contents: Ohne das Meer gäbe es kein Leben auf unserem Planeten. Es regelt weitgehend das Klima, gibt uns Nahrung und liefert Energie. Darüber hinaus ist es ein wichtiger Verkehrsweg, ein Erholungsraum und ein Quell ästhetischen Vergnügens. Aber das Meer steht unter Stress, denn das alte Prinzip von der „Freiheit der Meere“ hat zu Überfischung, Artenverlust und einer immensen Verschmutzung der Ozeane geführt.Deshalb muss der Umgang mit dem Meer auf nachhaltige und gerechte Grundlagen gestellt werden. Der Meeresatlas 2017 liefert dazu die Daten, Fakten und Zusammenhänge. Er zeigt in zahlreichen Beiträgen und über 50 Grafiken, in welch schlechtem Zustand sich die Weltmeere befinden, warum das so ist und was man tun muss, um die Situation der Ozeane zu verbessern.
    Type of Medium: Map
    Pages: 1 Atlas (50 Seiten) , Illustrationen, Karten
    Parallel Title: Pösel, Natascha Übersetzt als Atlas de los océanos
    Language: German
    Note: Zur Erstellung des „Meeresatlas“ haben viele Expertinnen und Experten mit ihrem Fachwissen beigetragen. Beteiligt waren insbesondere Wissenschaftlerinnen und Wissenschaftler der Christian-Albrechts-Universität zu Kiel (CAU), die gemeinsam im Kieler Exzellenzcluster „Ozean der Zukunft“ zu Fragestellungen der Entwicklung unserer Meere forschen. Die Texte des Atlas beruhen auf Interviews, die mit den Expertinnen und Experten geführt wurden. Interviewführung: Natascha Pösel, Peter Wiebe, Ulrich Bähr , Hier auch später erschienene, unveränderte Nachdrucke
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 5
    Online Resource
    Online Resource
    Meeresatlas : Daten und Fakten über unseren Umgang mit dem Ozean (2017)
    Berlin : Heinrich-Böll-Stiftung
    Details Availability
    Keywords: Atlas ; Meereskunde
    Type of Medium: Online Resource
    Pages: Online-Resource (50 Seiten, 23 MB)
    URL: https://www.boell.de/de/2017/04/25/meeresatlas-daten-und-fakten-ueber-unseren-umgang-mit-dem-ozean
    Language: English
    Note: Zur Erstellung des „Meeresatlas“ haben viele Expertinnen und Experten mit ihrem Fachwissen beigetragen. Beteiligt waren insbesondere Wissenschaftlerinnen und Wissenschaftler der Christian-Albrechts-Universität zu Kiel (CAU), die gemeinsam im Kieler Exzellenzcluster „Ozean der Zukunft“ zu Fragestellungen der Entwicklung unserer Meere forschen. Die Texte des Atlas beruhen auf Interviews, die mit den Expertinnen und Experten geführt wurden. Interviewführung: Natascha Pösel, Peter Wiebe, Ulrich Bähr
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 6
    facet.materialart.
    Unknown
    Temporal decoupling of carbon and nitrogen dynamics in a mesocosm diatom bloom (2002)
    ASLO (Association for the Sciences of Limnology and Oceanography)
    In:  Limnology and Oceanography, 47 (3). pp. 753-761.
    Details
    Publication Date: 2014-01-30
    Description: Flows of the major biogeochemical elements (C, N, P, Si) and of transparent exopolymer particles (TEP) were traced during a bloom of a natural assemblage of marine diatoms in a mesocosm (l m(3)) to determine whether the exudation and subsequent gelation of carbon-rich phytoplankton exopolymers can account for the formation and potential export of carbon in excess of that predicted by Redfield ratios. Exponential growth of the phytoplankton community in the mesocosm extended for 10 d until nitrate concentration fell below detection and concentrations of dissolved inorganic and particulate organic nitrogen and phosphorus remained stable. Tight covariation of particulate organic elements occurred as long as nutrients were replete. But, after nitrate depletion, decoupling of carbon dynamics from that of nitrogen and phosphorus was observed, with a large flow of carbon into TEP An uptake of 72% more dissolved inorganic carbon (DIC) than inferred from nitrate supply and Redfield stoichiometry (referred to as carbon overconsumption) occurred during the study, largely during the postbloom phase, and was almost entirely traced to the particulate organic matter (POM) pool. Marine snow (aggregates 〉0.5 mm) appeared at the onset of nitrate depletion and coincided with rapid increase in TEP concentrations. Elemental composition of marine snow differed from the Redfield ratio by an enrichment in carbon and a depletion in phosphorus relative to nitrogen. It is suggested that sinking of TEP-rich marine snow could be a possible mechanism for export of carbon above calculations that are based on the Redfield stoichiometry.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.4319/lo.2002.47.3.0753
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
    facet.materialart.
    Unknown
    Multiple environmental changes induce interactive effects on bacterial degradation activity in the Arctic Ocean (2015)
    ASLO (Association for the Sciences of Limnology and Oceanography)
    In:  Limnology and Oceanography, 60 (4). pp. 1392-1410.
    Details
    Publication Date: 2019-09-23
    Description: The Arctic Ocean faces multiple environmental changes induced by climate change on both global and regional scale. In addition to global changes in seawater temperature and pH, Arctic waters receive organic matter enrichment due to increasing pelagic primary production, enhanced sea ice melting and increasing terrestrial carbon loads. We experimentally tested individual and combined effects of warming, acidification and organic matter amendment on growth, biomass production and extracellular enzyme activities of bacterioplankton in Fram Strait during early summer. Results reveal pH optima of 6.7–7.6 for extracellular leucine-aminopeptidase and below pH 6.0 for beta-glucosidase in the West Spitsbergen Current. These optima well below the current seawater pH imply increasing hydrolytic activity with ongoing ocean acidification. However, the new synthesis of extracellular enzymes during 4-d incubations obscured the biochemical pH effects. Elevated temperature and carbohydrate supply had strongly interactive effects on bacterial biomass production in both Atlantic Water of the West Spitsbergen Current and Polar Water of the East Greenland Current. Activation energies ranged from 45 kJ mol−1 to 52 kJ mol−1 at in situ substrate concentration, while substantially higher values of 122–174 kJ mol−1 could be estimated from incubations with carbohydrate addition. The net loss of total amino acids in carbohydrate-amended incubations was significantly reduced at elevated temperature in all experiments, suggesting enhanced de novo synthesis. Our findings show that the complexity of combined effects must be considered to better assess the potential of climate change to alter biogenic carbon and energy fluxes in marine systems.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1002/lno.10112
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 8
    facet.materialart.
    Unknown
    Nutrient regulation of late spring phytoplankton blooms in the midlatitude North Atlantic (2020)
    ASLO (Association for the Sciences of Limnology and Oceanography) | Wiley
    Details
    Publication Date: 2023-02-08
    Description: The duration and magnitude of the North Atlantic spring bloom impacts both higher trophic levels and oceanic carbon sequestration. Nutrient exhaustion offers a general explanation for bloom termination, but detail on which nutrients and their relative influence on phytoplankton productivity, community structure, and physiology is lacking. Here, we address this using nutrient addition bioassay experiments conducted across the midlatitude North Atlantic in June 2017 (late spring). In four out of six experiments, phytoplankton accumulated over 48–72 h following individual additions of either iron (Fe) or nitrogen (N). In the remaining two experiments, Fe and N were serially limiting, that is, their combined addition sequentially enhanced phytoplankton accumulation. Silicic acid (Si) added in combination with N + Fe led to further chlorophyll a (Chl a) enhancement at two sites. Conversely, addition of zinc, manganese, cobalt, vitamin B12, or phosphate in combination with N + Fe did not. At two sites, the simultaneous supply of all six nutrients, in combination with N + Fe, also led to no further Chl a enhancement, but did result in an additional 30–60% particulate carbon accumulation. This particulate carbon accumulation was not matched by a Redfield equivalent of particulate N, characteristic of high C:N organic exudates that enhance cell aggregation and sinking. Our results suggest that growth rates of larger phytoplankton were primarily limited by Fe and/or N, making the availability of these nutrients the main bottom‐up factors contributing to spring bloom termination. In addition, the simultaneous availability of other nutrients could modify bloom characteristics and carbon export efficiency.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: text
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 9
    facet.materialart.
    Unknown
    New guidelines for the application of Stokes' models to the sinking velocity of marine aggregates (2020)
    ASLO (Association for the Sciences of Limnology and Oceanography) | Wiley
    Details
    Publication Date: 2023-02-08
    Description: Numerical simulations of ocean biogeochemical cycles need to adequately represent particle sinking velocities (SV). For decades, Stokes' Law estimating particle SV from density and size has been widely used. But while Stokes' Law holds for small, smooth, and rigid spheres settling at low Reynolds number, it fails when applied to marine aggregates complex in shape, structure, and composition. Minerals and zooplankton can alter phytoplankton aggregates in ways that change their SV, potentially improving the applicability of Stokes' models. Using rolling cylinders, we experimentally produced diatom aggregates in the presence and absence of minerals and/or microzooplankton. Minerals and to a lesser extent microzooplankton decreased aggregate size and roughness and increased their sphericity and compactness. Stokes' Law parameterized with a fractal porosity modeled adequately size‐SV relationships for mineral‐loaded aggregates. Phytoplankton‐only aggregates and those exposed to microzooplankton followed the general Navier‐Stokes drag equation suggesting an indiscernible effect of microzooplankton and a drag coefficient too complex to be calculated with a Stokes' assumption. We compared our results with a larger data set of ballasted and nonballasted marine aggregates. This confirmed that the size‐SV relationships for ballasted aggregates can be simulated by Stokes' models with an adequate fractal porosity parameterization. Given the importance of mineral ballasting in the ocean, our findings could ease biogeochemical model parameterization for a significant pool of particles in the ocean and especially in the mesopelagic zone where the particulate organic matter : mineral ratio decreases. Our results also reinforce the importance of accounting for porosity as a decisive predictor of marine aggregate SV.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 10
    facet.materialart.
    Unknown
    Testing the direct effect of CO2 concentration on a bloom of the coccolithophorid Emiliania huxleyi in mesocosm experiments (2005)
    ASLO (Association for the Sciences of Limnology and Oceanography)
    In:  Limnology and Oceanography, 50 . pp. 493-504.
    Details
    Publication Date: 2014-01-30
    Description: We studied the direct effects of CO2 Engel et al. in the seawater was modified by an aeration system. The triplicate mesocosm treatments represented low (190 parts per million by volume (ppmV) CO2 organisms in a mesocosm experiment. In nine outdoor enclosures (11 m3 present (410 ppmV CO2 and high (710 ppmV CO2 pCO2 and related changes in seawater carbonate chemistry on marine planktonic each), the partial pressure of CO2 (pCO2 conditions. After initial fertilization with nitrate and phosphate a bloom dominated by the coccolithophorid Emiliania huxleyi occurred simultaneously in all of the nine mesocosms; it was monitored over a 19-day period. The three CO2 treatments assimilated nitrate and phosphate similarly. The concentration of particulate constituents was highly variable among the replicate mesocosms, disguising direct CO2 within each treatment, however, indicated that the net specific growth rate of E. huxleyi, the rate of calcification per cell, and the elemental stoichiometry of uptake and production processes were sensitive to changes in pCO2 This broad influence of CO2 -related effects. Normalization of production rates . on the E. huxleyi bloom suggests that changes in CO2 physiology with likely effects on the marine biogeochemistry.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.4319/lo.2005.50.2.0493
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...