catchability
11force of fishing mortality — the extent to which a stock is susceptible to fishing; quantitatively, the proportion of the stock removed by a defined unit of fishing effort. In pelagic fishes, an inverse function of stock biomass. When it is 0.01 or less it can be used as an… …
12Karner Blue — Taxobox name = Karner Blue image width = 240px status = G2 status system = TNC regnum = Animalia phylum = Arthropoda classis = Insecta ordo = Lepidoptera familia = Lycaenidae genus = Lycaeides species = L. melissa subspecies = L. m. samuelis… …
13Milner Baily Schaefer — Milner Baily ( Benny ) Schaefer was born in Cheyenne, Wyoming, in 1912 and died at the age of 57 in San Diego, California in 1970. He is notable for his work on the population dynamics of fisheries. Schaefer worked as a biologist at the… …
14aggregating device — artificial or natural floating objects placed on the ocean surface, often anchored to the bottom, to attract several schooling fish species underneath, thus increasing their catchability. Used with tuna, for example. Also called fish attracting… …
15attracting device — fish aggregating device (artificial or natural floating objects placed on the ocean surface, often anchored to the bottom, to attract several schooling fish species underneath, thus increasing their catchability. Used with tuna, for example.… …
16capturability — the ease or difficulty of catching a given species or stock under defined conditions. Also called catchability …
17fish aggregating device — artificial or natural floating objects placed on the ocean surface, anchored to the bottom or drifting, to attract several schooling fish species underneath, thus increasing their catchability. Used with tuna, for example. Also called fish… …
18fishing intensity — 1) effective fishing effort 2) fishing effort per unit area (must be proportional to fishing mortality through the relation F q(f/A) where (f/A) is the fishing intensity and “q” the catchability coefficient) 3) effectiveness of fishing …
19intensity — 1) effective fishing effort 2) fishing effort per unit area (must be proportional to fishing mortality through the relation F q(f/A) where (f/A) is the fishing intensity and “q” the catchability coefficient) 3) effectiveness of fishing …
20nominal effort — fishing effort or vessel carrying capacity that has not been standardised. When catchability changes through, for example, changes in gear technology, trends in nominal effort can be misleading as a picture of trends in exploitation …
