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  • Berlin : Heinrich-Böll-Stiftung  (3)
  • Oxford Univ. Press  (2)
  • 1
    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
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  • 2
    Keywords: Atlas ; Meereskunde
    Type of Medium: Online Resource
    Pages: Online-Resource (50 Seiten, 23 MB)
    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
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  • 3
    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
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  • 4
    Publication Date: 2023-02-08
    Description: Many coastal oceans experience not only increased loads of nutrients but also changes in the stoichiometry of nutrient supply. Excess supply of nitrogen and stable or decreased supply of silicon lower silicon to nitrogen (Si:N) ratios, which may decrease diatom proportion in phytoplankton. To examine how Si:N ratios affect plankton community composition and food web structure, we performed a mesocosm experiment where we manipulated Si:N ratios and copepod abundance in a Baltic Sea plankton community. In high Si:N treatments, diatoms dominated. Some of them were likely spared from grazing unexpectedly resulting in higher diatom biomass under high copepod grazing. With declining Si:N ratios, dinoflagellates became more abundant under low and picoplankton under high copepod grazing. This altered plankton food web structure: under high Si:N ratios, edible diatoms were directly accessible food for copepods, while under low Si:N ratios, microzooplankton and phago-mixotrophs (mixoplankton) were a more important food source for mesograzers. The response of copepods to changes in the phytoplankton community was complex and copepod density-dependent. We suggest that declining Si:N ratios favor microzoo- and mixoplankton leading to increased complexity of planktonic food webs. Consequences on higher trophic levels will, however, likely be moderated by edibility, nutritional value or toxicity of dominant phytoplankton species.
    Type: Article , PeerReviewed
    Format: text
    Format: text
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  • 5
    Publication Date: 2024-02-07
    Description: Diatoms often dominate phytoplankton in temperate, polar and upwelling regions. Decreases in silicate availability or silicon to nitrogen (Si:N) ratios may induce silicon limitation in diatoms and lower their proportion within phytoplankton communities. The effects of such changes on the nutritional quality of phytoplankton are not well understood. To examine how changing Si:N ratios affect plankton nutritional value, we applied a range of Si:N ratios on a natural plankton community and manipulated grazing pressure to assess top-down effects of copepod selective grazing. Diatom proportion in phytoplankton increased with increasing Si:N ratios and so did phytoplankton nutritional quality in terms of major fatty acid concentrations, such as polyunsaturated fatty acids, docosahexaenoic (DHA) and eicosapentaenoic (EPA) acids. However, stoichiometric quality (carbon to nitrogen and carbon to phosphorus ratios), DHA:EPA and omega 3:6 (omega 3:omega 6) ratios declined with increasing Si:N ratios, suggesting that proportions between essential compounds in copepod diet may be more favorable in lowered Si:N ratios. Copepods had a negative effect on DHA contents, DHA:EPA and omega 3:omega 6 ratios, indicating possible selective grazing on more nutritious plankton. Our findings show that declining silicate concentrations can affect stoichiometric and biochemical quality of phytoplankton, which copepods can also moderate by selective grazing.
    Type: Article , PeerReviewed
    Format: text
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