Crocodylus johnsoni: Population traits

at T = 22 °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: 2025/05/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.582098 0.582098 0.627913 0.627913 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.00170817 0.00170817 0.0001969 0.0001969 spec pop growth rate
t2 d NaN NaN NaN NaN 405.783 405.783 3520.3 3520.3 population doubling time
a_b d 93.9738 91.3681 93.2322 90.7549 89.4193 87.6507 89.4193 87.6507 age at birth
t_p d 4008.99 1246.94 2014.1 1123.27 926.992 751.382 926.992 751.382 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_p - 1 1 0.427754 0.385688 1 1 0.364078 0.336579 survival probability at puberty
theta_0b - 0.0048776 0.00428597 0.095361 0.131202 0.141634 0.139034 0.315825 0.363629 frac of ind that is embryo
theta_bp - 0.00487905 0.00428709 0.0617858 0.0807876 0.121594 0.119724 0.186037 0.206279 fraction of individuals that is juvenile
theta_pi - 0.990243 0.991427 0.842853 0.788011 0.736773 0.741242 0.498139 0.430093 frac of ind that is adult
L_bi cm 10.5637 13.9855 10.2965 12.915 8.66092 9.96342 9.60267 10.1781 mean structural length of post-natals
L2_bi cm^2 112.747 198.077 113.991 187.33 92.7848 128.08 131.712 169.217 mean squared structural length of post-natals
L3_bi cm^3 1209.39 2821.37 1296.71 2820.57 1139.67 1933.86 2110.14 3475.19 mean cubed structural length of post-natals
Ww_bi g 3197.19 8985.72 3595.77 9468.22 4357.67 9192.52 8068.42 16519.2 mean wet weight of post-natals
L_pi cm 10.6016 14.0331 10.8443 13.9414 9.5862 11.0661 12.0892 13.6187 mean structural length of adults
L2_pi cm^2 113.261 198.895 121.754 205.655 106.526 147.141 177.594 245.938 mean squared structural length of adults
L3_pi cm^3 1215.23 2833.45 1390.04 3107.09 1322.76 2240.88 2888.04 5127.94 mean cubed structural length of adults
Ww_pi g 3212.61 9024.19 3854.57 10430 5057.76 10651.9 11042.8 24375.4 mean wet weight of adults
R 1/d 0 0.0127152 0.00126975 0.0143729 0.00172087 0.00731253 0.0119184 0.0228531 mean reproduction rate of adults
J_X g/d 20.855 48.7036 22.7447 49.6862 29.4839 54.1017 41.8536 71.478 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 0.0660275 0.0610585 0.00992715 0.00957308 yield of living structure on food
Y_VX_d mol/mol 0.00319747 0.00290458 0.00796219 0.00745199 1.07064e-05 7.44808e-06 0.0185121 0.0181507 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.186438 0.22918 0.0280307 0.0359321 yield of living reserve on food
Y_EX_d mol/mol 0.00525548 0.00634615 0.014117 0.0175632 3.02311e-05 2.79561e-05 0.0522715 0.0681277 yield of dead reserve on food
Y_CX mol/mol 0.716765 0.716117 0.705694 0.703308 0.518471 0.487785 0.63528 0.616559 yield of CO2 on food
Y_HX mol/mol 0.762099 0.761409 0.750327 0.747791 0.551263 0.518636 0.675461 0.655555 yield of H2O on food
Y_OX mol/mol -0.90974 -0.908917 -0.895688 -0.89266 -0.65806 -0.619112 -0.806317 -0.782555 yield of O2 on food
Y_NX mol/mol 0.165407 0.165258 0.162852 0.162302 0.119647 0.112566 0.146603 0.142283 yield of N-waste on food
mu_TX J/mol 459939 459493 452807 451194 331085 310409 406960 394462 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