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DAPSTOM Phase 3 - Understanding trophic interactions in the Irish Sea [DAPSTOM3] - MF1109

Summary Objective:
Use fish stomach content data to describe how fish feeding preferences have changed in the last century and understand how changes in the abundance of one species can affect others, focusing on interactions between cod and Norway lobster in the Irish Sea.

Key Customer Purpose:
Cod is thought to be the most important predator of Norway lobster Nephrops norvegicus in the Irish Sea, however both species support important commercial fisheries. A duel species stock assessment for Irish Sea cod and Nephrops proposed almost 2 decades ago indicated that fishing mortality should be reduced on Nephrops and increased on cod to maximise profits to the industry. Although fishing mortality on cod has increased significantly there is no evidence of a corresponding increase in Nephrops. Using detailed data, this project will attempt to provide more accurate predictions with regard to the potential impact that changes in cod abundance might have on Irish Sea Nephrops stocks.

Project Documents
• TPS - Two Page Summary : MF1109 Two Page Summary: Who eats who in the oceans, and how has this changed?   (361k)
Time-Scale and Cost
From: 2009

To: 2010

Cost: £50,000
Contractor / Funded Organisations
Fields of Study
Marine Fisheries