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admb_real:two_qs_cohorts_per_run [2010/09/20 12:38] lennartfr |
admb_real:two_qs_cohorts_per_run [2010/09/20 12:39] (current) lennartfr |
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:!: As the number of cohorts increases, the catchabilities frequently become very low, resulting in enourmous N0 estimates and standard deviations. | :!: As the number of cohorts increases, the catchabilities frequently become very low, resulting in enourmous N0 estimates and standard deviations. | ||

- | :!: :!: :!: //Adding a cohort may result in a dramatic change of the estimates!// For instance, compare the single-cohort curves of the cohorts born in 1995 and 1996 (N0<sub>1995</sub> = **13.2**, N0<sub>1996</sub> = **1.4**), with the corresponding estimate of both these cohorts simultaneously (N0<sub>1995</sub> = **25.0**, N0<sub>1996</sub> = **24.3**). | + | :!: :!: :!: //Adding a single cohort may result in a dramatic change of the estimates!// For instance, compare the single-cohort curves of the cohorts born in 1995 and 1996 (N0<sub>1995</sub> = **13.2**, N0<sub>1996</sub> = **1.4**), with the corresponding estimate of both these cohorts simultaneously (N0<sub>1995</sub> = **25.0**, N0<sub>1996</sub> = **24.3**). |

==== First cohort born in 1994 ==== | ==== First cohort born in 1994 ==== |

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