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Table 2 Indirect methods used to calculate mortality rates

From: Modeling the population dynamics of lemon sharks

Method Relationship Value
Hoenig (1983) (fish) l n(Z)=1.46−1.01 l n(t max ) 0.167
Hoenig (1983) (cetacean) l n(Z)=0.941−0.873 l n(t max ) 0.154
Hoenig (1983) (combined) l n(Z)=1.44−0.982 l n(t max ) 0.179
Pauly (1980) l o g(M)=−0.0066−0.279 l o g(L )  
  +0.6543 l o g(K)+0.4634 l o g(T) 0.140
Jensen (1996) (age) M=1.65/x m 0.138
Jensen (1996) (growth) M=1.5 K 0.086
Jensen (1996) (Pauly) M=1.6 K 0.091
  1. Here M and Z represent natural and total mortality, respectively. Similar analysis as [41] and [42]. Note: Life history parameters are based on [36]. K, body growth parameter (0.057); L , maximum theoretical length (317.65 cm); x m , age at maturity (12 years); t max , maximum age (25); T, mean temperature (27.1°C, [43]).