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Milner-gulland, E. J.; Garcia, Serge; Arlidge, William; Bull, Joseph; Charles, Anthony; Dagorn, Laurent; Fordham, Sonya; Zivin, Joshua Graff; Hall, Martin; Shrader, Jeffrey; Vestergaard, Niels; Wilcox, Chris; Squires, Dale. |
In terrestrial and coastal systems, the mitigation hierarchy is widely and increasingly used to guide actions to ensure that no net loss of biodiversity ensues from development. We develop a conceptual model which applies this approach to the mitigation of marine megafauna by-catch in fisheries, going from defining an overarching goal with an associated quantitative target, through avoidance, minimization, remediation to offsetting. We demonstrate the framework's utility as a tool for structuring thinking and exposing uncertainties. We draw comparisons between debates ongoing in terrestrial situations and in by-catch mitigation, to show how insights from each could inform the other; these are the hierarchical nature of mitigation, out-of-kind offsets,... |
Tipo: Text |
Palavras-chave: Albatrosses; Biodiversity offsetting; Economic incentives; No net loss; Sharks and rays; Turtles. |
Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00442/55324/74980.pdf |
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Garcia, Serge; Kolding, Jeppe; Rice, Jake; Rochet, Marie-joelle; Zhou, Shijie; Arimoto, Takafumi; Borges, Lisa; Bundy, Alida; Dunn, Daniel; Graham, Norman; Hall, Martin; Heino, Mikko; Law, Richard; Makino, Mitsutaku; Rijnsdorp, Adriaan D.; Simard, François; Smith, Anthony D.m.; Symons, Despina. |
The conventional selectivity paradigm is briefly reviewed and its performance examined from an ecosystem perspective. It is stressed that the overall (cumulative) selectivity of the harvest process in an ecosystem is the result of nested selection by fishers and fisheries of: (i) habitats; (ii) species assemblages; (iii) populations and (iv) individuals. A range of ecosystem models predict a strong impact of concentrated fishing (selective fishing) on the ecosystem structure stability, resilience and productivity. There seem to be advantages (in both yield and maintenance of ecosystem structure and functioning) to distribute fishing pressure broadly across available species and ecosystem compartments. Balanced harvesting was therefore defined by the... |
Tipo: Text |
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Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00026/13697/10775.pdf |
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