Ursus arctos: Population traits

at T = 37.3 °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_min f_max date: 2024/07/13
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.994653 0.994653 NaN NaN 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000733887 0.000733887 NaN NaN spec pop growth rate
t2 d NaN NaN NaN NaN 944.488 944.488 NaN NaN population doubling time
a_b d 25.915 25.915 NaN NaN 25.915 25.915 NaN NaN age at birth
t_x d 2687.44 702.482 NaN NaN 1625.56 692.397 NaN NaN time since birth at weaning
t_p d 203.279 180.174 NaN NaN 202.24 179.382 NaN NaN time since birth at puberty
S_b - 1 1 NaN NaN 1 1 NaN NaN survival probability at birth
S_x - 1 1 NaN NaN 1 1 NaN NaN survival probability at weaning
S_p - 0.999997 1 NaN NaN 1 1 NaN NaN survival probability at puberty
theta_0b - 0.00170067 0.00151706 NaN NaN 0.0188399 0.0188395 NaN NaN frac of ind that is embryo
theta_bx - 0.00170065 0.00151704 NaN NaN 0.0184849 0.0184844 NaN NaN fraction of individuals that is baby
theta_xp - 0.17466 0.0396056 NaN NaN 0.665101 0.372404 NaN NaN fraction of individuals that is juvenile
theta_pi - 0.821938 0.95736 NaN NaN 0.297574 0.590272 NaN NaN frac of ind that is adult
L_bi cm 38.7402 44.385 NaN NaN 33.4825 37.7315 NaN NaN mean structural length of post-natals
L2_bi cm^2 1511.43 1984.1 NaN NaN 1196.29 1531.15 NaN NaN mean squared structural length of post-natals
L3_bi cm^3 59153.2 88966.1 NaN NaN 44105.4 64301.7 NaN NaN mean cubed structural length of post-natals
Ww_bi g 142794 233053 NaN NaN 106805 169003 NaN NaN mean wet weight of post-natals
L_pi cm 39.4072 45.0441 NaN NaN 39.5886 44.4377 NaN NaN mean structural length of adults
L2_pi cm^2 1552.93 2029.18 NaN NaN 1567.26 1976.34 NaN NaN mean squared structural length of adults
L3_pi cm^3 61196.7 91420.6 NaN NaN 62045.8 87965.9 NaN NaN mean cubed structural length of adults
Ww_pi g 147727 239483 NaN NaN 150249 231199 NaN NaN mean wet weight of adults
R 1/d 8.20686e-05 0.0760097 NaN NaN 0.00241899 0.0688114 NaN NaN mean reproduction rate of adults
J_X g/d 2013.01 3026.77 NaN NaN 1601.85 2348.34 NaN NaN mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 0.109375 NaN NaN 0.109375 0.109375 NaN NaN yield of faeces on food
Y_VX mol/mol 0 0 NaN NaN 0.0202069 0.0200951 NaN NaN yield of living structure on food
Y_VX_d mol/mol 0.00199844 0.00178128 NaN NaN 1.22723e-06 5.25797e-07 NaN NaN yield of dead structure on food
Y_EX mol/mol 0 0 NaN NaN 0.0287257 0.0327204 NaN NaN yield of living reserve on food
Y_EX_d mol/mol 0.00282574 0.00288491 NaN NaN 1.7446e-06 8.56144e-07 NaN NaN yield of dead reserve on food
Y_CX mol/mol 0.819366 0.819512 NaN NaN 0.778563 0.774973 NaN NaN yield of CO2 on food
Y_HX mol/mol 0.698798 0.698923 NaN NaN 0.663999 0.660938 NaN NaN yield of H2O on food
Y_OX mol/mol -0.963308 -0.96348 NaN NaN -0.915337 -0.911116 NaN NaN yield of O2 on food
Y_NX mol/mol 0.0664351 0.0664469 NaN NaN 0.0631267 0.0628356 NaN NaN yield of N-waste on food
mu_TX J/mol 461842 461916 NaN NaN 438894 436790 NaN NaN 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