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...

Two mass-balance trophic models are constructed to describe the Gulf of Thailand ecosystem (10–50 m depth): one model pertains to the initial phase of fisheries development, and the other to when the resources were severely depleted. The two phases are compared, and changes brought about by fishing discussed. A dynamic simulation model, Ecosim, is then used successfully to reproduce the 1980 st...

Myths recalling how islands were ‘‘fished up’’ or ‘‘thrown down’’ by (demi)gods are widespread in the Pacific Islands. Fishing-up myths are more numerous and are concentrated in a heartland comprising parts of Samoa, Tonga, the southern Cook Islands, and the Society Islands of French Polynesia. Geological details in many fishing-up myths suggest these recall the activities of shallow submarine ...

Fishing in the area of Cachoeira de Emas dates from the aboriginal Painguás who inhabited its margins. The socioeconomic conditions of the fishers and fishing are described, derived from personal interviews with 33 fishers. Their mean age is 48.6 years and they have been fishing on average for 24.2 years. The monthly total raw income is US$ 575.52 and the raw income just from fishing is of US$ ...

The non utilization of fishing management techniques in the Amazônia has many causes such as land tenure instability, inadequate legislation and public policies, the advance of cattle ranching over the floodplains and lack of adequate credit and incentives. Amongst the effects caused by this problem we find the alteration of the ecological process in the floodplains, a decrease in some fish sto...

—Catch-and-release fisheries have become very important in the management of overexploited recreational fish stocks. Tag return studies, where the tag is removed regardless of fish disposition, have been used to assess the effectiveness of restoration efforts for these fisheries. We extend the instantaneous rate formulation of tag return models to allow for catch and release as well as harvest....

The paper develops a biological-economic evaluation tool to analyse the consequences for trawl fishers of implementing more selective fishing technologies. This is done by merging a dynamic biological population model and an economic cost-benefit evaluation framework to describe the consequences for the fish stocks, fishermen and society. The bio-economic evaluation is applied to the case of th...

The paper presents a multi-agent system aiming to solve the problem of rational exploitation of natural renewable resources by self-interested agents, known also as the Tragedy of Commons. The system is geared towards a particular instance of this problem, namely the FishBanks game. The agents use genetic algorithms to build plans for fishing in several fishing banks and to buy or sell ships in...

The welfare of the fishing community in Cirebon City indicates that management and development are not equally distributed. carried out will run optimally if there is no in-depth understanding characteristics regional community. This research aims to map economic characteristics, as well analyze driving inhibiting factors Cangkol Village. was April–June 2023. result showed average income skippe...

The Kaibartas are one of the sixteen Scheduled Castes of Assam. Fishing is considered to be the primary occupation of the Kaibartas. The present work was undertaken among the Kaibartas of Boripara village, nearby Guwahati city in Kamrup District, Assam. The society and economy of these people and the occupational changes noticed among them due to the impact of urbanization is discussed in this ...