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  1. Shedding light on the migratory patterns of the Amazonian goliath catfish, Brachyplatystoma platynemum , using otolith 87 Sr/ 86 Sr analyses
    Autor*in: Hauser, Marilia; Doria, Carolina R.C.; Santos, Roberto; García-Vasquez, Aurea; Pouilly, Marc; Pécheyran, Christophe; Ponzevera, Emmanuel; Torrente-Vilara, Gislene; Bérail, Sylvain; Panfili, Jacques; Darnaude, Audrey,; Renno, Jean-François; García-Dávila, Carmen; Nuñez, Jesus; Ferraton, Franck; Vargas, Gladys; Duponchelle, Fabrice
    Erschienen: 2019
    Verlag:  HAL CCSD ; Wiley

    International audience ; In the Amazon, migratory catfishes of the genus Brachyplatystoma are apex predators that are important for fisheries and conservation. The life cycle of Brachyplatystoma platynemum Boulenger, 1898 is poorly known, although it... mehr

     

    International audience ; In the Amazon, migratory catfishes of the genus Brachyplatystoma are apex predators that are important for fisheries and conservation. The life cycle of Brachyplatystoma platynemum Boulenger, 1898 is poorly known, although it has been hypothesized to be very similar to that of Brachyplatystoma rousseauxii Castelnau, 1855, which uses the entire length of the Amazon basin to complete its life cycle (from the Andes to the estuary). This study provides the first data on the migratory patterns of B. platynemum at the individual level using otolith microchemistry. In total, 94 individuals were sampled close to major breeding areas in the Amazon basin (78 fish from the middle and upper Madeira River and 14 fish from the upper Amazon), and their lifetime movements were assessed by measuring variations in 87 Sr/ 86 Sr along transverse sections of their otoliths (ear stones), using laser ablation multi-collector mass spectrometry (LA-MC-ICP-MS). The migrations of B. platynemum are not as extensive as those of B. rousseauxii, and do not involve natal homing. Furthermore, the estuary is not a nursery area, at least for fish hatched in the Madeira. Nevertheless, B. platynemum migrates several thousand kilometres within the Amazon basin, with transboundary displacements between at least Bolivia, Brazil, and Peru. Current and planned hydroelectric development in the Amazon basin will severely disrupt both migration and access to breeding grounds, ultimately affecting the recruitment and population dynamics of these apex predators. The conservation of B. platynemum is crucial for the stability of the Amazonian aquatic food webs. This requires building effective fish passage on the two existing Madeira dams and considering alternative options to the large-scale hydropower development in the Amazon basin

     
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    Quelle: BASE Fachausschnitt AVL
    Sprache: Englisch
    Medientyp: Aufsatz aus einer Zeitschrift
    Format: Online
    Übergeordneter Titel: ISSN: 1052-7613 ; EISSN: 1099-0755 ; Aquatic Conservation: Marine and Freshwater Ecosystems ; https://hal.science/hal-02055491 ; Aquatic Conservation: Marine and Freshwater Ecosystems, 2019, 29 (3), pp.397-408. ⟨10.1002/aqc.3046⟩
    Schlagworte: fish; conservation evaluation; catchment; fishing; hydroelectric dams; migration; river; [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry; [CHIM.ANAL]Chemical Sciences/Analytical chemistry; [CHIM.POLY]Chemical Sciences/Polymers; [CHIM.MATE]Chemical Sciences/Material chemistry
  2. Firm's response and unintended health consequences of industrial regulations
    Autor*in: Hansman, Christopher; Hjort, Jonas; León, Gianmarco
    Erschienen: February 13, 2015
    Verlag:  [Universitat Pompeu Fabra, Department of Economics and Business], [Barcelona]

    Standort:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
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    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Buch (Monographie)
    Format: Online
    Schriftenreihe: [Working papers / Universitat Pompeu Fabra, Department of Economics and Business ; 1469]
    Schlagworte: Industrial regulations; firms; externalities; air pollution; health; fishing; Peru; ITQs
    Umfang: 1 Online-Ressource (circa 70 Seiten), Illustrationen
  3. Firms' response and unintended health consequences of industrial regulations
    Autor*in: Hansman, Christopher; Hjort, Jonas; León, Gianmarco
    Erschienen: February 2015
    Verlag:  GSE, Graduate School of Economics, Barcelona

    Standort:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
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    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Buch (Monographie)
    Format: Online
    Schriftenreihe: Barcelona GSE working paper series ; no 809
    Schlagworte: Industrial regulations; firms; externalities; air pollution; health; fishing; Peru; ITQs
    Umfang: 1 Online-Ressource (circa 70 Seiten), Illustrationen
  4. A glance into the willingness to reduce overfishing
    field evidence from a fishnet exchange program
    Autor*in: Cavalcanti, Carina; Leibbrandt, Andreas
    Erschienen: [2017]
    Verlag:  [Monash University, Monash Business School, Department of Economics], [Canberra]

    Standort:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
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    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Buch (Monographie)
    Format: Online
    Schriftenreihe: Discussion paper / Monash Business School, Department of Economics ; 17, 09
    Schlagworte: auction; common pool resources; fishing; resource exploitation; willingness to change
    Umfang: 1 Online-Ressource (circa 20 Seiten)