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Selective fishing and balanced harvest in relation to fisheries and ecosystem sustainability. Report of a scientific workshop organized by the IUCN-CEM Fisheries Expert Group (FEG) and the European Board of Conservation and Development (EBCD) in Nagoya (Japan) 14-16 October 2010 ArchiMer
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...
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Ano: 2011 URL: http://archimer.ifremer.fr/doc/00026/13697/10775.pdf
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Individual transferable quota contribution to environmental stewardship: a theory in need of validation ArchiMer
Van Putten, Ingrid; Boschetti, Fabio; Fulton, Elizabeth A.; Smith, Anthony D.m.; Thebaud, Olivier.
We explored the extent to which (1) individual transferable quotas (ITQs) may lead to changes in environmental stewardship and (2) environmental stewardship may in turn contribute to explain the success or otherwise of ITQs in meeting sustainability objectives. ITQs are an example of incentive-based fisheries management in which fishing rights can be privately owned and traded. ITQs are aimed at resolving the problems created by open-access fisheries. ITQs were proposed to promote economic efficiency, and there is growing empirical evidence that ITQs meet a number of economic and social fisheries management objectives. Even though improved stock status arises as a consequence of the total allowable catch levels implemented together with ITQs, the effect is...
Tipo: Text Palavras-chave: Comanagement; Environmental ethics; Fisheries management; Fishing rights; Stewardship.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00250/36165/34720.pdf
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Of sets of offsets: Cumulative impacts and strategies for compensatory restoration ArchiMer
Thebaud, Olivier; Boschetti, Fabio; Jennings, Sarah; Smith, Anthony D.m.; Pascoe, Sean.
Biodiversity offsets are increasingly advocated as a flexible approach to managing the ecological costs of economic development. Arguably, however, this remains an area where policy-making has run ahead of science. A growing number of studies identify limitations of offsets in achieving ecologically sustainable outcomes, pointing to ethical and implementation issues that may undermine their effectiveness. We develop a novel system dynamic modelling framework to analyze the no net loss objective of development and biodiversity offsets. The modelling framework considers a marine-based example, where resource abundance depends on a habitat that is affected by a sequence of development projects, and biodiversity offsets are understood as habitat restoration...
Tipo: Text Palavras-chave: Biodiversity offsets; Compensatory restoration; Cumulative impacts; Habitat-resource interactions; Bio-economic modelling; Social acceptability.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00270/38156/36312.pdf
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