Enhydra lutris: Population traits

at T = 37.5 °C with background hazards for embryo, baby, juv, adult: 0, 0, 0, 0 1/d

Ln survival probability as function of age, with (dashed) and without (solid) thinning at max (red) and min (blue) scaled functional response for females.
Ln survivor function of the stable age distribution as function of age, with (dashed) and without (solid) thinning at max (red) and min (blue) scaled functional response for females.
model stx f_minf f_max date: 2025/05/19
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.977966 0.985178 0.992589 0.992589 1 1 scaled functional response
r 1/d 0 0 0.000606445 0.000111948 0.000783203 0.000192823 spec pop growth rate
t2 d NaN NaN 1142.97 6191.68 885.016 3594.74 population doubling time
a_b d 88.7782 88.7782 88.7782 88.7782 88.7782 88.7782 age at birth
t_x d 1493.97 1101.86 967.09 967.09 885.803 885.803 time since birth at weaning
t_p d 198.904 197.492 196.086 196.086 194.723 194.723 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_x - 1 0.471789 1 0.469728 1 0.467704 survival probability at weaning
S_p - 0.999999 0.17183 1 0.170713 1 0.16964 survival probability at puberty
theta_0b - 0.00825621 0.0451941 0.0525353 0.0742787 0.067203 0.0982725 frac of ind that is embryo
theta_bx - 0.00825604 0.0303081 0.0497807 0.0492444 0.0626878 0.0645773 fraction of individuals that is baby
theta_xp - 0.130678 0.110978 0.371636 0.152352 0.404241 0.178987 fraction of individuals that is juvenile
theta_pi - 0.85281 0.81352 0.526048 0.724125 0.465869 0.658163 frac of ind that is adult
L_bi cm 10.6957 10.5868 10.1914 10.4481 10.0589 10.3369 mean structural length of post-natals
L2_bi cm^2 114.809 113.314 105.995 111.165 103.77 109.483 mean squared structural length of post-natals
L3_bi cm^3 1235.11 1220.47 1117.04 1195.36 1088.49 1176.37 mean cubed structural length of post-natals
Ww_bi g 25556.5 25430.8 23442.5 25085.9 23005.7 24863 mean wet weight of post-natals
L_pi cm 10.8311 10.9099 10.9809 10.9894 11.0526 11.0676 mean structural length of adults
L2_pi cm^2 117.313 119.027 120.582 120.767 122.16 122.493 mean squared structural length of adults
L3_pi cm^3 1270.64 1298.57 1324.11 1327.15 1350.21 1355.72 mean cubed structural length of adults
Ww_pi g 26291.7 27058.3 27788 27851.9 28537.2 28653.7 mean wet weight of adults
R 1/d 0.000109079 0.000626115 0.00109481 0.00114968 0.00156865 0.00166748 mean reproduction rate of adults
J_X g/d 450.277 447.694 421.928 442.506 416.153 439.063 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 0.109375 0.109375 0.109375 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0.00160555 0.000302409 0.00204855 0.000516623 yield of living structure on food
Y_VX_d mol/mol 0.000264627 0.000572521 4.56915e-06 0.00066449 1.32951e-06 0.000795981 yield of dead structure on food
Y_EX mol/mol 0 0 0.0320888 0.006044 0.0412484 0.0104024 yield of living reserve on food
Y_EX_d mol/mol 0.00521096 0.0113571 9.13197e-05 0.0132806 2.67701e-05 0.0160274 yield of dead reserve on food
Y_CX mol/mol 0.818763 0.812793 0.792572 0.805059 0.783752 0.798166 yield of CO2 on food
Y_HX mol/mol 0.698285 0.693193 0.675947 0.686596 0.668426 0.680719 yield of H2O on food
Y_OX mol/mol -0.9626 -0.955581 -0.931808 -0.946488 -0.921439 -0.938385 yield of O2 on food
Y_NX mol/mol 0.0663862 0.0659022 0.0642626 0.065275 0.0635475 0.0647162 yield of N-waste on food
mu_TX J/mol 461403 457927 446156 453424 441021 449412 yield of heat on food

Remarks

  • Reprod-code O applies. Sex ratio is assumed to be 1:1. Parameters of male and female are the same.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer