Phoebastria nigripes: Population traits

at T = 39.4 °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: 2023/10/04
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.989227 0.989227 0.991855 0.991855 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000874023 0.000874023 0.000195082 0.000195082 spec pop growth rate
t2 d NaN NaN NaN NaN 793.053 793.053 3553.1 3553.1 population doubling time
a_b d 46.9845 46.8266 46.9752 46.8177 46.9467 46.7905 46.9467 46.7905 age at birth
t_p d 766.324 300.284 575.949 295.027 441.598 280.611 441.598 280.611 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_p - 1 1 0.447546 0.436331 1 1 0.445496 0.434416 survival probability at puberty
theta_0b - 0.00300391 0.00292788 0.0170665 0.0181487 0.0402546 0.0401212 0.0530505 0.0570688 frac of ind that is embryo
theta_bp - 0.00300244 0.00292645 0.0110919 0.0116516 0.0386177 0.0384952 0.0341095 0.036252 fraction of individuals that is juvenile
theta_pi - 0.993994 0.994146 0.971842 0.9702 0.921128 0.921384 0.91284 0.906679 frac of ind that is adult
L_bi cm 4.69031 4.91002 4.67581 4.89108 4.51378 4.70765 4.61201 4.81118 mean structural length of post-natals
L2_bi cm^2 22.0253 24.1395 21.9436 24.0235 20.676 22.5253 21.5196 23.4625 mean squared structural length of post-natals
L3_bi cm^3 103.504 118.771 103.193 118.266 95.6005 108.882 101.079 115.281 mean cubed structural length of post-natals
Ww_bi g 2690.74 3227.38 2689.51 3221.88 2511.3 2989.7 2655.22 3165.39 mean wet weight of post-natals
L_pi cm 4.69702 4.91715 4.70172 4.92074 4.59943 4.80023 4.69438 4.90662 mean structural length of adults
L2_pi cm^2 22.0732 24.1921 22.1271 24.2405 21.2836 23.2035 22.1042 24.1622 mean squared structural length of adults
L3_pi cm^3 103.77 119.074 104.206 119.509 98.9517 112.759 104.313 119.296 mean cubed structural length of adults
Ww_pi g 2697.64 3235.6 2715.89 3255.72 2599.33 3096.13 2740.17 3275.63 mean wet weight of adults
R 1/d 0 0.0111784 0 0.0114907 0 0.00647634 6.26866e-05 0.0112997 mean reproduction rate of adults
J_X g/d 159.034 182.505 158.865 182.11 150.917 172.155 157.075 179.318 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 0.000553661 0.00055279 0.000125537 0.000125416 yield of living structure on food
Y_VX_d mol/mol 4.21007e-05 4.11843e-05 9.09946e-05 9.04669e-05 5.50846e-07 5.21034e-07 0.000168566 0.000172173 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.0139903 0.0146258 0.00317216 0.00331826 yield of living reserve on food
Y_EX_d mol/mol 0.00105237 0.00107792 0.00228058 0.00237408 1.39191e-05 1.37856e-05 0.00425945 0.00455537 yield of dead reserve on food
Y_CX mol/mol 0.722744 0.722724 0.721706 0.72163 0.711804 0.711289 0.717356 0.716994 yield of CO2 on food
Y_HX mol/mol 0.769444 0.769423 0.768339 0.768259 0.757798 0.757249 0.763708 0.763323 yield of H2O on food
Y_OX mol/mol -0.917328 -0.917303 -0.916011 -0.915915 -0.903444 -0.902789 -0.91049 -0.91003 yield of O2 on food
Y_NX mol/mol 0.166787 0.166782 0.166548 0.16653 0.164262 0.164144 0.165544 0.16546 yield of N-waste on food
mu_TX J/mol 463761 463748 463073 463022 456505 456161 460187 459946 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