Sökning: "Pontoon trap"
Hittade 3 avhandlingar innehållade orden Pontoon trap.
1. Salmonids and grey seals (Halichoerus grypus) : mitigation in pontoon traps
Sammanfattning : In the 1970’s, the seal populations of the Baltic Sea Area were at historically low levels. They have recovered and increased since then. The increase of the seal populations is a success for the management of the Baltic Sea Area environment. It has also meant an increase in number of interactions with coastal fisheries. LÄS MER
2. Size Selection of Fish in the Trap Fisheries of the Baltic and Bothnian Seas
Sammanfattning : A sustainable fishery in the Baltic Sea requires fishing gear that fishes selectively and at the same time excludes raiding seals. A successful type of trap recently developed in response to the seal problem is the pontoon fish chamber, which significantly decreases damage to gear and catch losses caused by grey seals. LÄS MER
3. Seals and fisheries: a study of the conflict and some possible solutions
Sammanfattning : Interaction between seals and fisheries along the Swedish coast has serious environmental and economic consequences. This thesis describes the conflict as it affects four different small-scale coastal fisheries; the eel fisheries on the west coast, the herring fisheries and salmon fisheries in the northern Baltic and the cod fisheries in the central Baltic. LÄS MER