GB-Lowestoft: Cefas RFQ for review of methodologies to assess loss of early life stages of fish from entrapment

Loss of early stages of fish due to anthropogenic impacts from e.g. cooling water intakes has long been recognised as a potential issue in assessing environmental impact assessments. The main tool employed for fish loss assessment has been Equivalent Adult values (EAVs) which translate loss of eggs/juveniles into adults using usually generic information from lifetables on survival rates, natural and fishing mortalities. These lifetables have themselves varying degrees of certainty and evidence to support them. More...