Untitled - CNR

Marine research at CNRFigure 4: Sardine recruit numbers (thousands) estimated by VPA are plotted as a functionof Po River flow rate (m 3 · s −1 ) in April-June of years from 1974 to 2001, a) withoutand b) with 1 year lag. Simple linear regression analysis did not provide significant (p >0.05) slope. Redrawn from [17].ment of Adriatic anchovy and sardine, allowingalso an improvement in stock management.In particular, some environmentalvariables could be employed in the predictionsof catch and biomass at sea in thefuture. These can be performed on the basisof population dynamics methods, whereusually more scenarios of fishing effort /fishing mortality and strength of recruitmentare evaluated. The knowledge of theeffects due to environment could be takeninto account to select these different scenariosof recruitment at least for short termpredictions, reducing, therefore, the uncertaintyin the future estimates.1903