rate of fishing

rate of fishing
instantaneous rate of fishing mortality (the decrease in numbers of fish over time when fishing and natural mortality act concurrently (Nt
No * e^-Zt , where No is the initial number and Nt is the number of the remaining fish at the end of time t. Z is the instantaneous total mortality rate, usually composed of M + F, where M is the natural mortality rate and F is the mortality rate caused by the fishery)). Abbreviated as F

Dictionary of ichthyology. 2009.

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  • instantaneous rate of fishing mortality — used to describe the decrease in numbers of fish over time when fishing and natural mortality act concurrently (Nt = No * e^ Zt , where No is the initial number and Nt is the number of the remaining fish at the end of time t. Z is the… …   Dictionary of ichthyology

  • instantaneous rate of fishing mortality — When fishing and natural mortality act concurrently, F is equal to the instantaneous total mortality rate, multiplied by the ratio of fishing deaths to all deaths. Also called: rate of fishing; instantaneous rate of fishing; force of fishing… …   Fisheries — dictionary

  • instantaneous rate of fishing mortality — When fishing and natural mortality act concurrently, F is equal to the instantaneous total mortality rate, multiplied by the ratio of fishing deaths to all deaths. Also called: rate of fishing; instantaneous rate of fishing; force of fishing… …   Fisheries — dictionary

  • rate of natural increase — instantaneous rate of surplus production (equal to rate of growth plus rate of recruitment less rate of natural mortality all in terms of weight and on an instantaneous basis. In a balanced or equilibrium fishery, this increment replaces what is… …   Dictionary of ichthyology

  • rate of removal — An inexactly defined term that can mean either rate of exploitation or rate of fishing depending on the context …   Fisheries — dictionary

  • rate of removal — An inexactly defined term that can mean either rate of exploitation or rate of fishing depending on the context …   Fisheries — dictionary

  • rate of removal — a poorly defined term that can mean either rate of exploitation or rate of fishing depending on the context (Ricker, 1975) …   Dictionary of ichthyology

  • fishing coefficient — rate of exploitation (the fraction, by number, of the fish in a population at a given time, which is caught and killed by man during the year immediately following (= FA/Z when fishing and mortality are concurrent). The term may also be applied… …   Dictionary of ichthyology

  • fishing mortality — A mathematical expression of the rate of deaths of fish due to fishing. Fishing mortality is often expressed as a rate that indicates the percentage of the population caught in a year; e.g. a fishing mortality rate of 0.2 implies that… …   Fisheries — dictionary

  • Fishing techniques — There is an intricate link between various fishing techniques and knowledge about the fish and their behavior including migration, foraging and habitat (Keegan 1986). All fish traps and methods of catching fish are based on this intimate… …   Wikipedia

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