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How many fish need to be measured to effectively evaluate trawl selectivity?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
The aim of this study was to provide practitioners working with trawl selectivity with general and easily understandable guidelines regarding the fish sampling effort necessary during sea trials. In particular, we focused on how many fish would need to be caught and length measured in a trawl haul in order to assess the selectivity parameters of the trawl at a designated uncertainty level. We also ...
Broadening the horizon of size selectivity in trawl gears
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-12)
The discussion of alternative harvest patterns in commercial fisheries has been raised by stock assessment and fishery modelers, especially in the wider context of balanced harvesting. But often, these theoretical approaches propose alternative exploitation patterns that are difficult to achieve within the current limitations in the selectivity characteristics of fishing gears, such as trawl gears. ...