Fish Stock Assessment: A Manual of Basic MethodsWiley, 12 jul 1983 - 236 páginas Describes the scientific techniques used in assessing fish stocks, evaluating the effect of fishing on these stocks, and the probable impact of different policies for developing and managing fisheries. Covers the techniques developed starting with simple models and continuing to more complex methods. |
Índice
BASIC CONCEPTS AND DATA SOURCES | 21 |
xi | 51 |
12 | 60 |
Página de créditos | |
Otras 12 secciones no se muestran.
Términos y frases comunes
adult stock age-groups amount of fishing analysis anchovy assumptions average Bertalanffy biomass by-catch calculated catch per unit catchability coefficient changes CIEM cohort constant demersal density determined distribution effect estimates example Exercise exploited expressed factors FAO Fish fish populations fish stocks fishermen fishery fishing effort fishing intensity fishing mortality fishing power fitting gill-net give given group of fish growth curve Gulland haddock increase individual fish linear regression maximum sustainable yield measure mesh methods mortality coefficient mortality rates N₁ natural mortality North Sea number of fish observed obtained otoliths parameters pattern of fishing pelagic period plaice plot population dynamics possible practice predators procedure production model proportion purse-seine recruitment regression relation result Ricker sampling selection curve shrimp spawning species statistical stock abundance stock assessment surveys tagged fish tons total catch total mortality trawl trawlers unit effort unit stock usually vessels weight year-class yellowfin tuna yield-per-recruit