Strix occidentalis: Population traits

at T = 40.2 °C with background hazards for embryo, juv, adult: 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 std f_min f_max date: 2025/02/12
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.843135 0.843135 0.863078 0.863078 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.00146191 0.00146191 0.00038799 0.00038799 spec pop growth rate
t2 d NaN NaN NaN NaN 474.137 474.137 1786.51 1786.51 population doubling time
a_b d 21.8634 21.9619 21.7764 21.8744 21.2378 21.3328 21.2378 21.3328 age at birth
t_p d 1019 NaN 719.908 1126.29 365.117 395.582 365.117 395.582 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_p - 1 1 0.794483 0.801713 1 1 0.754403 0.761512 survival probability at puberty
theta_0b - 0.00172996 0.00177084 0.00751101 0.00730818 0.0305388 0.0306726 0.04079 0.0392689 frac of ind that is embryo
theta_bp - 0.00173234 0.00177333 0.0066885 0.0065381 0.0296394 0.0297659 0.035092 0.0339439 fraction of individuals that is juvenile
theta_pi - 0.996538 0.996456 0.9858 0.986154 0.939822 0.939562 0.924118 0.926787 frac of ind that is adult
L_bi cm 6.80029 6.62422 6.90158 6.72604 7.10729 6.94483 7.42137 7.25688 mean structural length of post-natals
L2_bi cm^2 46.3287 43.9577 47.8698 45.4511 52.184 49.7535 56.7726 54.1744 mean squared structural length of post-natals
L3_bi cm^3 316.011 292.047 333.064 308.046 391.861 364.26 442.471 411.622 mean cubed structural length of post-natals
Ww_bi g 387.408 356.316 410.093 377.439 496.867 459.334 561.038 519.058 mean wet weight of post-natals
L_pi cm 6.80591 6.62967 6.92417 6.74702 7.21678 7.05 7.56555 7.39027 mean structural length of adults
L2_pi cm^2 46.387 44.0134 48.1079 45.6682 53.4122 50.9127 58.4288 55.6793 mean squared structural length of adults
L3_pi cm^3 316.481 292.486 335.013 309.788 402.697 374.284 457.456 424.96 mean cubed structural length of adults
Ww_pi g 387.984 356.852 412.494 379.573 510.606 471.975 580.039 535.877 mean wet weight of adults
R 1/d 7.43745e-05 0 0.000564406 0 0.00281376 0.00206792 0.00388455 0.00306152 mean reproduction rate of adults
J_X g/d 9.96458 9.2091 10.5396 9.74717 13.3122 12.3625 14.4827 13.461 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 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.0430334 0.043075 0.0118537 0.0118642 yield of living structure on food
Y_VX_d mol/mol 0.00256066 0.00260937 0.00536109 0.00539676 4.27546e-06 4.56144e-06 0.0143276 0.014128 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.0115315 0.0112429 0.00317639 0.00309665 yield of living reserve on food
Y_EX_d mol/mol 0.000578535 0.000574229 0.00123989 0.00121573 1.14568e-06 1.19057e-06 0.00383932 0.0036875 yield of dead reserve on food
Y_CX mol/mol 0.721082 0.721046 0.71827 0.71826 0.679294 0.679495 0.69666 0.697002 yield of CO2 on food
Y_HX mol/mol 0.767675 0.767637 0.764681 0.764671 0.723187 0.723401 0.741675 0.742039 yield of H2O on food
Y_OX mol/mol -0.91522 -0.915174 -0.91165 -0.911638 -0.862181 -0.862436 -0.884223 -0.884656 yield of O2 on food
Y_NX mol/mol 0.166404 0.166395 0.165755 0.165752 0.15676 0.156806 0.160768 0.160847 yield of N-waste on food
mu_TX J/mol 462781 462759 461049 461044 436988 437124 447705 447923 yield of heat on food

Remarks

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