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Mountain et al.

Seasonal Trends Interannual Differences. Modeling the change in biomass of cod cohorts. Mountain et al. Buckley et al. Growth Model. Gi = m1*ln(Pro) + m2*PP + C Hold effect of photoperiod constant prior to March 20. GAMs. Modeling the change in biomass of cod cohorts.

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Mountain et al.

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  1. Seasonal Trends Interannual Differences Modeling the change in biomass of cod cohorts Mountain et al. Buckley et al. Growth Model Gi = m1*ln(Pro) + m2*PP + C Hold effect of photoperiod constant prior to March 20 GAMs

  2. Modeling the change in biomass of cod cohorts Mi = m1*cohort + m2*(cohort)3 + C Low (98+99) or High (95+96) M G Gi = m1*ln(Pro) + m2*PP + C Poor (95) or Fast (99) M/G High Mortality with 1995 Growth Biomass March February April April May

  3. Conclusions Strong seasonal trends in growth and mortality rates Large interannual differences Position in fixed solar cycle explains more variability in M and G than temperature Low mortality and rapid growth are necessary but not sufficient for production of a strong year-class

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