Fisheries dictionary

SURPLUS PRODUCTION

surplus production: translation

Inherent productivity of a fish stock that can be harvested on a sustainable basis. Based on the theory that, at large stock size, reproductive rates and rate of stock growth are slowed by self-regulating mechanisms, and that stock growth rates are faster after removals, as the stock attempts to rebuild. In theory, fishing can be moderated to take advantage of the more productive stock growth rates, provided that it does not exceed the stock recovery capacity.

  1. surplus production—surplus production translationproduction of new weight by a fishable stock plus recruits added to it less what is removed by natural mortality. Usually estimated as the c...Dictionary of ichthyology