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| Bush, Simon R.; Wageningen University; simon.bush@wur.nl; van Zwieten, Paul A.M.; Wageningen University; paul.vanzwieten@wur.nl; Visser, Leontine; Wageningen University; leontine.visser@wur.nl; van Dijk, Han; Wageningen University; han.vandijk@wur.nl; Bosma, Roel; Wageningen University; roel.bosma@wur.nl; de Boer, Willem F.; Wageningen University; Fred.deBoer@wur.nl; Verdegem, Marc; Wageningen University; marc.verdegem@wur.nl. |
| We contend there are currently two competing scenarios for the sustainable development of shrimp aquaculture in coastal areas of Southeast Asia. First, a landscape approach, where farming techniques for small-scale producers are integrated into intertidal areas in a way that the ecological functions of mangroves are maintained and shrimp farming diseases are controlled. Second, a closed system approach, where problems of disease and effluent are eliminated in closed recirculation ponds behind the intertidal zone controlled by industrial-scale producers. We use these scenarios as two ends of a spectrum of possible interactions at a range of scales between the ecological, social, and political dynamics that underlie the threat to the resilience of mangrove... |
| Tipo: Peer-Reviewed Synthesis |
Palavras-chave: Coastal fisheries; Governance; Livelihood decision making; Mangrove; Shrimp-aquaculture; Social-ecological systems; South-East Asia; Trans-disciplinary research; WSSV disease. |
| Ano: 2010 |
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| Tessier, Anne; Blin, Charlotte; Cottet, Maud; Kue, Kaoboun; Panfili, Jacques; Chanudet, Vincent; Descloux, Stephane; Guillard, Jean. |
| Biological traits of Oreochromis niloticus were studied in order to identify potential differences between the population of the Nam Theun 2 Reservoir and other populations in Asia and in Africa. The study also aimed to characterize the demographic structure of the exploited population by fisheries in the reservoir. Toluidine-stained transverse section of otoliths from 322 specimens, collected between November 2015 and January 2017, were analysed to identify the periodicity of annulus formation and to age individuals. Length, weight, sex and sexual maturity stage were recorded. Life history traits were characterized by length-weight and length age relationships. The periodicity of annulus formation was annual, with complete formation of the translucent... |
| Tipo: Text |
Palavras-chave: Otolith; Man-made Lake; South-East Asia; Fisheries. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00626/73771/75176.pdf |
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| Salazar, Rene; Louwaars, Niels P.; Visser, Bert. |
| Current farmers’ breeding goes beyond the gradual selection in landraces, and includes development and maintenance of major new farmers’ varieties that are rather uniform, in particular in South-East Asia. Modern varieties developed in the formal sector have simply replaced landraces as the source of diversity, but have not abolished farmers’ breeding practices. Interpretations of the new international agreements on plant genetic resources should protect the development of modern farmers’ varieties. However, ensuring recognition of collective innovation, allowing access to relevant germplasm sources for farmers’ breeding activities, keeping materials freely available, and arranging for effective benefit sharing, all form major challenges. This paper... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Farmers’ varieties; Collective rights; Origin recognition; Declaration of origin; South-East Asia; Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/42486 |
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