fish stock
111depressed stock — a stock of fish whose production is below expected levels based on available habitat and natural variations in survival levels, but above the level where permanent damage to the stock is likely …
112spawning stock — the mature part of the stock that is able to spawn; the number or biomass of all fish beyond the age or size class in which 50% of the individuals are mature. Also called adult stock …
113virgin stock — a stock of fish that is never caught by fishing. Growth and recruitment add biomass while death removes biomass. The biomass stays steady apart from natural fluctuations caused by good and bad years a stock in its natural condition before anyone… …
114List of heroic stock characters — This is a list of stock characters within the heroic archetype.The Chosen OneMust typically fulfill an ancient prophecy to save the world, often requiring the help of a Wise Old Man or Elderly Martial Arts Master to fulfill this destiny. Almost… …
115usable stock — The number or weight of all fish in a stock that lie within the range of sizes customarily considered usable (or designated so by law). Also called: standing crop …
116usable stock — The number or weight of all fish in a stock that lie within the range of sizes customarily considered usable (or designated so by law). Also called: standing crop …
117catchability-led stock collapse — the tendency for small schools of fish to aggregate into larger schools, resulting in a continued high fishing pressure although the total stock has declined. Also called hyperaggregation …
118known-stock fishery — a fishery taking place in an area and during a time where only fish of a certain stock are present …
119mixed stock exception — where many species of fish occur together, some may be overfished while others are being harvested in a sustainable fashion. If these mixed stocks were managed on the basis of the overfished stock then no fishery could occur an exception is made… …
120mixed stock fishery — a fishery catching fish from more than one stock …
