Why should fishery managers not view cod stocks such as capelin and mackerel?

Fishery managers should not view cod stocks like capelin and mackerel as interchangeable because each species plays a unique ecological role and has different biological and life history traits. Capelin and mackerel serve as key forage species for cod, meaning their abundance and health directly impact cod populations. Managing these stocks separately allows for more targeted conservation efforts and helps maintain the overall balance of the marine ecosystem. Additionally, different management strategies are required to account for the specific threats and challenges each species faces.