منابع مشابه
Rents Drain in Fisheries: The Case of the Lake Victoria Nile Perch Fishery
Many fisheries are potentially very valuable. According to a recent report by the World Bank and the FAO (2008), global fisheries rents could be as high as US$ 40-60 billion annually on a sustainable basis. However, according to the report, due to the “common property problem”, most fisheries of the world are severely overexploited and generate no economic rents. The Lake Victoria Nile perch fi...
متن کاملWas Lates Late? A Null Model for the Nile Perch Boom in Lake Victoria
Nile perch (Lates niloticus) suddenly invaded Lake Victoria between 1979 and 1987, 25 years after its introduction in the Ugandan side of the lake. Nile perch then replaced the native fish diversity and irreversibly altered the ecosystem and its role to lakeshore societies: it is now a prised export product that supports millions of livelihoods. The delay in the Nile perch boom led to a hunt fo...
متن کاملCascading Effects of the Introduced Nile Perch on the Detritivorous/Phytoplanktivorous Species in the Sublittoral Areas of Lake Victoria
a In the 1980s an explosive increase o f the introduced Nile perch (Iates sp.; Harrison 1991) in Lake Victoria caused the destruction o f approximately 65% of the endemic haplochromine cichlid~ The eradication o f approximately 200 vertebrate species in less than a decade may well represent the largest extinction event among vertebrates during this century. The introduction o f the Nile perch c...
متن کاملSpatial Diversity in Small-scale Fishing: a Socio-cultural Interpretation of the Nile Perch Sector on Lake Victoria, Uganda
This paper discusses spatial patterns in small-scale fishing in Africa. It is located in Lake Victoria where since the 1990s a vibrant Nile perch fishing for overseas export developed. Focusing on a very small area in the Ugandan part of the lake, the paper uncovers a larger diversity in fishermen’s responses to the dynamic environment of the Nile perch sector than a widely adopted generic mode...
متن کاملFishing down and fishing hard: ecological change in the Nile perch of Lake Nabugabo, Uganda
Fishing is a potent ecological force. In Lake Victoria, East Africa, Nile perch, Lates niloticus contributes to a multi-million dollar fishing industry but is threatened by over-exploitation. We quantified spatial and temporal trends in the distribution, diet and size of Nile perch in Lake Nabugabo, Uganda, a satellite of Lake Victoria. From 1995 to 2007, we detected a decline in catch per unit...
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ژورنال
عنوان ژورنال: Oryx
سال: 1986
ISSN: 0030-6053,1365-3008
DOI: 10.1017/s0030605300020305