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Do fish predators in the North Sea live beyond their means: Is prey production sufficient to meet consumption?

The ICES International Bottom Trawl Survey (IBTS) quarter 3 (Q3) data, Dutch Beam Trawl Survey (BTS) Q3 data, and ICES stock assessment data were analysed to model the catchability of each 1-cm size class of demersal fish caught in the Q3 IBTS. Estimates of catchability were generally low, suggesting that raw trawl survey density data seriously underestimated actual densities.

Identiferoai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:493490
Date January 2008
CreatorsFraser, Helen M.
PublisherUniversity of Aberdeen
Source SetsEthos UK
Detected LanguageEnglish
TypeElectronic Thesis or Dissertation

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