1.How do we parameterize mortality?
       Whole populations: 
         Inverse methods: Ohman, Nisbit & Wood; McGillicuddy adjoint; Hall ‘64
Patchy Predators:
         Predation by planktivorous fish, schooling herring/mackerel
         Small scale patchiness, ctenophores
      Gelatinous predation, sparse data
      The recruitment problem, exponential losses,
106
0
Cohort Age
Abundance
10
100
106
0
Cohort Age
Abundance
10
100
0.0500  vs  0.0475
Chronic vs Episodic Mortality
Some questions