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SYMBOLS


Symbols

Indicating:

A

Constant of the simple linear model (intercept of the straight line)

α

Constant of the Stock-Recruitment relations (limit value of R/S when S→0)

amr(y)

Absolute mean rate of variation of y

air(y)

Absolute instantaneous rate of variation of y

B

Constant of the simple linear model (slope of the straight line)

B

Biomass

SP, SB

Spawning Biomass

C

Catch, in number

C

Constant of the Stock-Recruitment relations (generalizes the models)

D

Total number of deaths

E

Exploitation rate

F

Fishing mortality coefficient

Cconst

Non defined constant

Cte

Non defined constant

H

General power function

ITQ

Individual Transferable Quotas

K

Constant of the individual growth models (associated to growth rate)

k

Constant of the Stock-Recruitment relations

k

Constant of the production models (Carrying capacity)

L,L

Total length of an individual

MBAL

Minimum Biomass Acceptable Level (biological reference limit point)

M

Natural mortality coefficient

N

Number of individuals of a cohort

P

Constant of the Production models (generalizes the models)

Q

Capturability coefficient

R

Constant of the Production models (intrinsic rate associated with the biomass growth)

R2

Determination coefficient

R

Recruitment to the exploitable phase

rmr(y)

Relative mean rate of variation of y

rir(y)

Relative instantaneous rate of variation of y

S

Annual Survival rate

S

Adult or total biomass (in the relations S-R)

s

Exploitation pattern (selectivity)

SQ

Sum of the squares of the deviations

S-R

Stock-Recruitment relation

t

Instant of time

T

Interval of time between 2 instants

TAC

Total Allowed Catch

TRP

Biological Target Reference Point

U

Stock abundance index

V

Function to be maximized for the determination of F0.1

W

Individual weight

Y

Catch in weight

Z

Total mortality coefficient (total mortality instantaneous rate)


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