Relation Between Reproductive Potential and Sustained Yield of Fisheries

1974 ◽  
Vol 31 (3) ◽  
pp. 359-362
Author(s):  
Rögnvaldur Hannesson
Keyword(s):  
Growth Rate ◽  
Steady State ◽  
Relative Growth Rate ◽  
Growth Curve ◽  
Yield Curve ◽  
Reproductive Potential ◽  
Relative Growth ◽  
Monotonically Decreasing Function ◽  
Sustained Yield

The steady-state yield curve is derived from the growth curve of biomass and shown to bend back toward the origin only if the relative growth rate of biomass is not a monotonically decreasing function of biomass. The bearing of this shape of the yield curve on the possibility of extinction of species is discussed.

A Novel Unification Method to Characterize a Broad Class of Growth Curve Models Using Relative Growth Rate

2019 ◽  
Vol 81 (7) ◽  
pp. 2529-2552
Author(s):  
Biman Chakraborty ◽  
Amiya Ranjan Bhowmick ◽  
Joydev Chattopadhyay ◽  
Sabyasachi Bhattacharya
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Growth Curve ◽  
Broad Class ◽  
Relative Growth ◽  
Growth Curve Models

La première feuille des plantules d'orge. II. Croissance en longueur

1982 ◽  
Vol 60 (12) ◽  
pp. 2877-2881 ◽  
Author(s):  
A. Silvy
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Growth Curve ◽  
Growth Curves ◽  
Relative Growth ◽  
Leaf Initiation ◽  
Line Breeding ◽  
The Moment

The growth in length, of the first leaf was studied after an improvement by line breeding and seed grading. Similar to leaf initiation which occurs in two distinct periods for the blade and for the sheath, the growth curve of the whole leaf equals the sum of the growth curves for the blade and for the sheath, respectively. The relative growth rate for the whole leaf reaches a maximum, then decreases with a shoulder. The maximum corresponds to the greatest relative growth rate for the blade. The change in the rate of decrease corresponds to the beginning of the sheath growth at the moment when the blade is emerging.

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