Bison bison: Population traits

at T = 38.7 °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: 2023/04/13
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.773425 0.773425 0.800612 0.800612 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000860291 0.000860291 0.000219832 0.000219832 spec pop growth rate
t2 d NaN NaN NaN NaN 805.712 805.712 3153.08 3153.08 population doubling time
a_b d 196.248 196.248 196.248 196.248 196.248 196.248 196.248 196.248 age at birth
t_x d 2710.95 1076.65 1728.72 983.534 833.933 673.706 833.933 673.706 time since birth at weaning
t_p d 330.403 277.942 315.453 268.302 249.252 222.821 249.252 222.821 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_x - 0.999999 1 0.534825 0.493317 1 1 0.473092 0.440877 survival probability at weaning
S_p - 0.999675 0.999986 0.189919 0.186538 0.999992 0.999996 0.184929 0.182417 survival probability at puberty
theta_0b - 0.0105576 0.00966164 0.0552242 0.0651788 0.155402 0.15539 0.218716 0.249477 frac of ind that is embryo
theta_bx - 0.0105561 0.00966029 0.0397415 0.0450388 0.131243 0.131233 0.142142 0.156614 fraction of individuals that is baby
theta_xp - 0.135254 0.0433376 0.114203 0.0727227 0.301305 0.240354 0.174203 0.148118 fraction of individuals that is juvenile
theta_pi - 0.843633 0.93734 0.790831 0.81706 0.41205 0.473022 0.464939 0.44579 frac of ind that is adult
L_bi cm 35.1211 40.4304 35.3518 40.2754 34.1856 37.4758 36.3158 39.2868 mean structural length of post-natals
L2_bi cm^2 1239.97 1645.26 1270.48 1660.94 1253.93 1532.75 1434.45 1730.69 mean squared structural length of post-natals
L3_bi cm^3 43923.7 67211.2 46104.1 69380.3 48390.2 66645.5 59709.1 81669.5 mean cubed structural length of post-natals
Ww_bi g 186206 318433 200699 337825 251061 388728 309787 476360 mean wet weight of post-natals
L_pi cm 35.7961 41.1192 37.0057 42.4607 42.2865 46.2406 44.4063 49.6786 mean structural length of adults
L2_pi cm^2 1281.36 1691.29 1369.46 1803.92 1797.49 2164.2 1979.45 2492.37 mean squared structural length of adults
L3_pi cm^3 45867.7 69583.6 50680.8 76677.7 76788.5 102441 88538.3 126094 mean cubed structural length of adults
Ww_pi g 194447 329673 220622 373358 398399 597518 459360 735478 mean wet weight of adults
R 1/d 6.37465e-05 0.00140928 0.000355565 0.00177564 0.00176386 0.00289343 0.00234518 0.0039706 mean reproduction rate of adults
J_X g/d 1248.7 1911.81 1324.4 1997.88 1632.68 2302.85 1867.73 2600.23 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 0.0254977 0.0248972 0.00702776 0.00690461 yield of living structure on food
Y_VX_d mol/mol 0.00199854 0.0018336 0.00434569 0.00417003 1.39102e-05 1.01196e-05 0.0100396 0.0102201 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.106791 0.120323 0.0294341 0.0333684 yield of living reserve on food
Y_EX_d mol/mol 0.00647386 0.00685362 0.0145719 0.0161346 5.82596e-05 4.89059e-05 0.0420483 0.0493915 yield of dead reserve on food
Y_CX mol/mol 0.815991 0.815792 0.806329 0.805046 0.701394 0.689445 0.74192 0.731435 yield of CO2 on food
Y_HX mol/mol 0.69592 0.695751 0.68768 0.686586 0.598186 0.587995 0.632748 0.623806 yield of H2O on food
Y_OX mol/mol -0.959341 -0.959107 -0.947982 -0.946473 -0.824612 -0.810564 -0.872257 -0.85993 yield of O2 on food
Y_NX mol/mol 0.0661614 0.0661453 0.0653781 0.065274 0.0568698 0.0559009 0.0601556 0.0593055 yield of N-waste on food
mu_TX J/mol 459868 459744 454337 453578 394039 387022 417312 411184 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