Daphnia magna

COMPLETE = 6.0; MRE = 0.194; SMAE = 0.285; SMSE = 0.135

Data & predictions

data prd RE symbol units description
1 0.6206 0.3794 ab d age at birth
45 43.65 0.02993 am d life span
0.1 0.09765 0.02348 Lb cm total length at birth
0.25 0.2626 0.05025 Lp cm total length at puberty
8.2 7.277 0.1126 Wd0 mug initial dry weight
6.6 4.51 0.3166 Wdb mug dry weight at birth
600 245.3 0.5911 Wd37 mug dry weight at L = 3.7 mm
see figure 0.2289 LpX length vs. ingestion rate
see figure 0.5522 LJO length vs. O2 consumption
see figure 0.08652 LJO_extra length vs. O2 consumption
see figure 0.141 tN time since birth vs. cumulative # of eggs
see figure 0.08607 tL_f time since birth vs. length
see figure 0.05875 tL_m time since birth vs. length
see figure 0.0586 tL1 time since birth vs. length
see figure 0.08433 tL2 time since birth vs. length
see figure 0.0688 tL3 time since birth vs. length
see figure 0.07532 tL4 time since birth vs. length
see figure 0.06933 tL5 time since birth vs. length
see figure 0.2726 tWd starvation time vs. dry weight
see figure 0.2553 tProt starvation time vs. protein
see figure 0.2009 tCarb starvation time vs. weight
see figure 0.2892 tGlyc starvation time vs. weight
see figure 0.2569 tLipi starvation time vs. weight
see figure 0.3927 tTrig starvation time vs. weight
see figure 0.05955 tS_f time since birth vs. surviving fraction
see figure 0.1859 tS_m time since birth vs. surviving fraction
see figure 0.1075 tL_SK1 time since birth vs. length
see figure 0.1035 tN_SK1 time since birth vs. cumulative # of eggs
see figure 0.09787 tL_SK2 time since birth vs. length
see figure 0.0913 tN_SK2 time since birth vs. cumulative # of eggs
see figure 0.05526 tL_SK3 time since birth vs. length
see figure 0.4458 tN_SK3 time since birth vs. cumulative # of eggs
see figure 0.04861 tL_SK4 time since birth vs. length
see figure 0.4595 tN_SK4 time since birth vs. cumulative # of eggs
see figure 0.2487 xf algae density vs. ingestion rate
see figure 0.04904 tL_C1 time since birth vs. length
see figure 0.215 tN_C1 time since birth vs. cumulative # of eggs
see figure 0.04301 tL_C2 time since birth vs. length
see figure 0.3824 tN_C2 time since birth vs. cumulative # of eggs
see figure 0.02102 tL_C3 time since birth vs. length
see figure 0.2821 tN_C3 time since birth vs. cumulative # of eggs
see figure 0.2198 LFx length vs. filtration rate
see figure 0.6016 LDw length vs. dry weight
see figure 0.2387 LDwA length vs. dry weight
see figure 0.1303 tS starvation time vs. survival
see figure 0.1603 Tap temperature vs. time since birth at puberty
see figure 0.1332 Tab temperature vs. time between broods
0.02 0.1858 8.29 psd.v cm/d energy conductance
0.8 0.5809 0.2739 psd.kap - allocation fraction to soma
0.95 0.95 0 psd.kap_R - reproduction efficiency
18 1200 65.67 psd.p_M J/d.cm^3 vol-spec som maint
0.002 0.2537 125.8 psd.k_J 1/d maturity maint rate coefficient
0.8 0.9034 0.1292 psd.kap_G - growth efficiency

std parameters at 20.0°C

symbol units value free description
z - 0.1516 1 zoom factor for female
F_m l/d.cm^2 30.17 1 {F_m}, max spec searching rate
kap_X - 0.9 0 digestion efficiency of food to reserve
kap_P - 0.05 0 faecation efficiency of food to faeces
v cm/d 0.1858 1 energy conductance
kap - 0.5809 1 allocation fraction to soma
kap_R - 0.95 0 reproduction efficiency
p_M J/d.cm^3 1200 1 [p_M], vol-spec somatic maint
p_T J/d.cm^2 0 0 {p_T}, surf-spec somatic maint
k_J 1/d 0.2537 1 maturity maint rate coefficient
E_G J/cm^3 4400 1 [E_G], spec cost for structure
E_Hb J 0.05464 1 maturity at birth
E_Hp J 1.09 1 maturity at puberty
h_a 1/d^2 0.0002794 1 Weibull aging acceleration
s_G - -0.3 0 Gompertz stress coefficient for female
T_A K 6400 0 Arrhenius temperature
T_ref K 293.1 0 Reference temperature
del_M - 0.264 1 shape coefficient
eR0 - 1 0 eR at start starvation
f - 1 0 scaled functional response for 0-var data
f_LJO - 0.78 0 scaled functional response for LJO data
f_tN - 1.343 1 scaled functional response for tN data
f_tL - 0.8404 1 scaled functional response for tL_f, tL_m data
f_tL1 - 1.031 1 scaled functional response for tL1 data
f_tL2 - 0.9601 1 scaled functional response for tL2 data
f_tL3 - 0.8563 1 scaled functional response for tL3 data
f_tL4 - 0.724 1 scaled functional response for tL4 data
f_tL5 - 0.6297 1 scaled functional response for tL5 data
s_Gm - -0.2 0 Gompertz stress coefficient for male
z_m - 0.08759 0 zoom factor for male
f_SK1 - 1.244 0 scaled functional response for tL_SK1, tN_SK1 data
f_SK2 - 1.096 0 scaled functional response for tL_SK2, tN_SK2 data
f_SK3 - 0.6747 0 scaled functional response for tL_SK3, tN_SK3 data
f_SK4 - 0.497 0 scaled functional response for tL_SK2, tN_SK2 data
f_ap - 0.8293 0 scaled functional response for Tap data
s_shrink - 4.38 0 shrinking stress coefficient
f_LW - 1 0 scaled functional response for LW data
t_0 d 2.324 0 time for egg production at 20�C
L_01 d 0.313 0 initial size for Coors data
L_02 d 0.313 0 initial size for Coors data
L_03 d 0.11 0 initial size for Coors data
fF_m - 1.5 0 increase in filtration rate at low food density, approximated from Lampert W. Limnol. Oceanogr., 39(5), 1994,997-1006