Changes between Version 11 and Version 12 of EwEugMortalityForaPreyIsConsumptionForaPredator
 Timestamp:
 20101123 23:57:34 (10 years ago)
Legend:
 Unmodified
 Added
 Removed
 Modified

EwEugMortalityForaPreyIsConsumptionForaPredator
v11 v12 47 47 Of the terms in Eq. 2.3, the production rate, ''P,,i,,'', is calculated as the product of ''B,,i,,'', the biomass of (''i'') and ''P,,i,,/B,,i,,'', the production/biomass ratio for group (''i''). The ''P,,i,,/B,,i,,'' rate under most conditions corresponds to the total mortality rate, ''Z'', see Allen (1971), commonly estimated as part of fishery stock assessments. The 'other mortality' is a catchall term including all mortality not elsewhere included, e.g., mortality due to diseases or old age, and is internally computed from, 48 48 49 ''M0,,i,, = P,,i,,'' ·''(''1'' – ''EE,,i,,'')'' ''' Eq. 9'''49 ''M0,,i,, = P,,i,,'' ^.^ ''(''1'' – ''EE,,i,,'')'' ''' Eq. 9''' 50 50 51 51 where ''EE,,i,,'' is called the 'ecotrophic efficiency' of (''i''), and can be described as the proportion of the production that is utilized in the system. The production term describing predation mortality, ''M2'', serves to link predators and prey as,