10.6084/m9.figshare.7491809.v1
John Feenstra
John
Feenstra
Richard McGarvey
Richard
McGarvey
Adrian Linnane
Adrian
Linnane
Malcolm Haddon
Malcolm
Haddon
Janet Matthews
Janet
Matthews
André E. Punt
André
E. Punt
Impacts on CPUE from vessel fleet composition changes in an Australian lobster (<i>Jasus edwardsii</i>) fishery
Taylor & Francis Group
2018
Miles Lamare
Southern rock lobster
Jasus edwardsii
entry and exit of vessels
rising catchability
fleet dynamics
standardised CPUE
2018-12-20 14:07:34
Dataset
https://tandf.figshare.com/articles/dataset/Impacts_on_CPUE_from_vessel_fleet_composition_changes_in_an_Australian_lobster_i_Jasus_edwardsii_i_fishery/7491809
<p>The Australian Victorian Western Zone rock lobster fishery is assessed using standardised catch-per-unit-effort (CPUE). Nominal CPUE declined over 1978–2009, but this underrepresents the estimated decline in abundance, and since 2009 standardised CPUE rose notably less than nominal CPUE. This study identified vessel as a key factor that explains the discrepancy between nominal and standardised CPUE. The composition of the fleet changed since 2009, under the pressure of constraining total allowable catch quotas, with vessels exiting the fishery having substantially lower estimated catchability, which increased the average catchability of the remaining fleet. New diagnostic indices were constructed to quantify discrepancies between trends in nominal and standardised CPUE that assisted in identifying periods during which both catchability and fleet composition changed.</p>