Strongylocentrotus purpuratus: Population traits

at T = 7 °C with background hazards for embryo, larva, 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 abj f_minf f_max date: 2025/05/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.176313 0.176313 0.588157 0.588157 1 1 scaled functional response
r 1/d 0 0 0.0174958 NaN 0.0318759 NaN spec pop growth rate
t2 d NaN NaN 39.6179 NaN 21.7452 NaN population doubling time
a_b d 6.03033 6.03033 4.94971 NaN 4.52699 NaN age at birth
t_j d 228.891 228.891 71.4926 NaN 45.0726 NaN time since birth at metam
t_p d 5918.51 5918.51 781.87 NaN 463.408 NaN time since birth at puberty
S_b - 1 1 1 NaN 1 NaN survival probability at birth
S_j - 1 0.81454 1 NaN 1 NaN survival probability at metam
S_p - 0.999999 0.000415458 1 NaN 1 NaN survival probability at puberty
theta_0b - 0.000224049 0.168965 0.0826272 NaN 0.133949 NaN frac of ind that is embryo
theta_bj - 0.000225564 0.153795 0.0761011 NaN 0.116374 NaN frac of ind between b and j
theta_jp - 0.00833608 0.675121 0.578656 NaN 0.543813 NaN frac of ind between j and p
theta_pi - 0.991214 0.0021196 0.262616 NaN 0.205864 NaN frac of ind that is adult
L_bi cm 1.16423 0.0105354 0.084029 NaN 0.0687376 NaN mean structural length of post-natals
L2_bi cm^2 1.39548 0.00199639 0.0236414 NaN 0.0168364 NaN mean squared structural length of post-natals
L3_bi cm^3 1.68665 0.00221022 0.0105915 NaN 0.00687396 NaN mean cubed structural length of post-natals
Ww_bi g 1.78194 0.00233509 0.0125877 NaN 0.0090766 NaN mean wet weight of post-natals
L_pi cm 1.17404 0.704597 0.239014 NaN 0.221663 NaN mean structural length of adults
L2_pi cm^2 1.40752 0.745294 0.0806218 NaN 0.0684659 NaN mean squared structural length of adults
L3_pi cm^3 1.70122 0.865948 0.0369026 NaN 0.0288042 NaN mean cubed structural length of adults
Ww_pi g 1.79733 0.914871 0.0438574 NaN 0.038034 NaN mean wet weight of adults
R 1/d 425.866 0 0 NaN 0 NaN mean reproduction rate of adults
J_X g/d 0.00797751 1.09811e-05 0.000451746 NaN 0.000545762 NaN mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 0.109375 0.109375 NaN 0.109375 NaN yield of faeces on food
Y_VX mol/mol 0 0 0.410203 NaN 0.401482 NaN yield of living structure on food
Y_VX_d mol/mol 0.00872383 0.0271921 1.60662e-07 NaN 4.47732e-08 NaN yield of dead structure on food
Y_EX mol/mol 0 0 0.0773089 NaN 0.128648 NaN yield of living reserve on food
Y_EX_d mol/mol 0.000492866 0.00153626 3.02792e-08 NaN 1.43468e-08 NaN yield of dead reserve on food
Y_CX mol/mol 0.881408 0.861897 0.403112 NaN 0.360495 NaN yield of CO2 on food
Y_HX mol/mol 0.639511 0.625354 0.29248 NaN 0.261559 NaN yield of H2O on food
Y_OX mol/mol -0.958532 -0.937313 -0.438385 NaN -0.392038 NaN yield of O2 on food
Y_NX mol/mol 0.132211 0.129284 0.0604669 NaN 0.0540743 NaN yield of N-waste on food
mu_TX J/mol 467867 458059 224878 NaN 201003 NaN yield of heat on food

Remarks

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