Fisheries Resource Monitoring and Assessment Flashcards
What does MSY stand for?
Maximum sustainable yield
What does MEY stand for?
Maximum economic yield
What are the objectives of fisheries management?
-Biological
-Financial
Goals that should be considered
-Recreational value
-Social value
What is the definition of maximum sustainable yield?
For a given fish stock
-That the highest possible annual catch that can be sustained overtime-
What does maximum economic yield mean?
Is the value of the largest positive difference between total revenues and total costs of fishing (including the cost of labour and capital)
What are some issues facing fisheries management?
-Fisheries in common areas
-Open to exploitation from all
-Tendency is always towards over-exploitation
-All mature fisheries are over exploited
What are some methods to reduce exploitation?
-Restrict access to fishery
-Reduce the catch rate
-Protect undersized and juvenile fish
-Quotas
-Controlled fishing seasons
-Licsencing
How are fisheries restricted?
-By reducing the capacity of the fleet
-By reducing time spent fishing by the fleet
How can catch rates be reduced?
Imposing TACs
Imposing quotas
What is the first priority of fisheries management?
Restricting access to the fishery
What is the second priority of fisheries management?
Reducing catch rates
What is the third priority of fisheries managemnet?
Protecting undersized and juvenile fish by using Technical conservation measures (TCMs)
How are Technical conservation measures benefical?
-Commercially important as small fish increase in size and value if not removed
-Biologically important as fish allowed to contribute to spawning stock
What does MLS stand for?
Minimum landing sizes
What are some EC technical measures?
-Minimum landing sizes and minimum conservation sizes
-Specifications for design and use of gears
-Minimum mesh sizes for nets
-Requirement of selective gears to reduce unwanted catches
-Closed areas and seasons (spawning/ nursery areas)
-Limits on by-catches
-Measures to limit environmental impacts