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  • 1
    Publication Date: 2019-10-01
    Repository Name: EPIC Alfred Wegener Institut
    Type: Book , peerRev
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  • 2
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    IUGG Secretariat, CIRES Cooperative Institute for Research in Environmental Sciences, University of Colorado
    Publication Date: 2020-02-12
    Language: English
    Type: info:eu-repo/semantics/other
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  • 3
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    IUGG Secretariat, KIT Karlsruhe Institute of Technology
    Publication Date: 2020-02-12
    Language: English
    Type: info:eu-repo/semantics/other
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  • 4
    Publication Date: 2024-02-09
    Description: The presence of a challenging microbial flora in larval rearing systems of the ornate rock lobster, Panulirus ornatus, requires the evaluation of suitable options for microbial management. Larval rearing on a commercially viable scale can only be established with a controlled microbial environment, since the proliferation of pathogenic and/or biofouling bacteria contribute to high mortalities of captive-reared larvae. In the present study, the bacterial colonization of three microbial compartments of an aquaculture larval rearing system of Panulirus ornatus was investigated and microbial management options for each compartment analyzed. Biofilm: Ozonation significantly modified the temporal progression of biofilm development and favoured the dominance of γ-Proteobacteria within the biofilm community, of which some dominant sequences showed most similarity to coral-associated bacterial strains. Ozonation delayed the establishment of filamentous bacteria, and also repressed the proliferation of pathogens and sulfur-metabolizing bacteria. The various effects of ozonation illustrated the presence of complex interactions during the process of bacterial colonization. Thus, the experiment highlighted the dynamics within the microbial community. Artemia: The distinct Vibrio load of Artemia demonstrated their potential as a vector of pathogenic bacteria to phyllosoma rearing. This potential was shown to be increased with older animals. Only a mixture of three different antibiotics reduced their load with cultivable vibrios. Concurrently, the problem of antibiotics resistance was underlined. The analysis accented the inadequacy of antibiotics for effective microbial management. At present however, alternative treatments cannot rely on commercial probiotics, whose poor efficiency was demonstrated likewise. Phyllosoma: The bacterial colonization vastly differed between cultured and wild phyllosoma. This confirmed the enhancement of biofouling processes in closed rearing environments, which was illustrated by the increased external attachment of filamentous and rod-shaped bacteria at the mouthparts and anus. The bacterial colonization of wild, healthy larvae was low, and comprised a diverse community including the Vibrionaceae. Thus, a presence of Vibrio-affiliated strains was separated from the occurrence of disease. Three bacterial isolates from wild larvae were demonstrated as inhibitory towards a pathogenic Vibrio strain and could represent probiotic candidates for implementation in phyllosoma rearing.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Thesis , notRev
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  • 5
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    Wuppertal : Wuppertal Institut für Klima, Umwelt, Energie | Wuppertal : Wuppertal Institut für Klima, Umwelt, Energie
    Publication Date: 2022-02-18
    Description: From 10 to 14 September 2003, the Ministerial Conference of the World Trade Organization (WTO) negotiated over a further liberalization of world trade. A lot was at stake there for the environment. It is true that in the current round of negotiations the Doha Declaration has agreed certain points relating to the environment. But this should not conceal the fact that the WTO is still a long way from taking due account of ecological aspects in its policies. The present paper begins by analyzing the discussion on environmental issues within the WTO, which for more than ten years has been conducted mainly in its Committee on Trade and Environment. It is shown that many environmental effects of trade liberalization have not been discussed at all, that conflicts of interest among WTO member-states prevent any deep discussion, and that an ecological reform of the WTO has up to now stood no chance. This analysis then forms the background for a twofold strategy. First, arguments are presented as to why the WTO, given its environmental policy deficits, should afford sufficient scope to institutions actively concerned with environmental policy. The conflictual relationship between Multilateral Environmental Agreements and the WTO is examined at this point. A distinction is drawn between minor and potentially critical conflicts, and it is shown how a limitation of the competence of the WTO's Dispute Settlement Body, together with cooperative political-legal processes to resolve conflicts between affected institutions, might offer a solution and lead to greater institutional equity in the global political arena. Second, the paper discusses how ecological aspects might be integrated step by step into the WTO. After a detailed examination of the potential and limits of instruments like impact assessments, it makes a number of recommendations for their further development. Finally, it considers how impact assessments might be integrated into the WTO's institutional structures, so that ecological aspects can be systematically input into policy-making processes and better public participation in WTO policy be ensured. In this connection, the paper discusses both the integration of impact assessments into the WTO's Trade Policy Review Mechanism and the creation of a new Strategic Impact Assessment Body within the WTO.
    Keywords: ddc:320
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: workingpaper , doc-type:workingPaper
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  • 6
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    Alfred Wegener Institute for Polar and Marine Research
    In:  EPIC3Berichte zur Polar- und Meeresforschung (Reports on Polar and Marine Research), Bremerhaven, Alfred Wegener Institute for Polar and Marine Research, 560, 228 p., ISSN: 1618-3193
    Publication Date: 2018-09-07
    Repository Name: EPIC Alfred Wegener Institut
    Type: "Berichte zur Polar- und Meeresforschung" , notRev
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  • 7
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Thesis , notRev
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  • 8
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/article
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  • 9
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    In:  German e-Science Conference (Baden-Baden 2007)
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/conferenceObject
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  • 10
    Publication Date: 2020-02-12
    Language: English
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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