Application of a mixed modelling approach to standardize catch-per-unit-effort data for an abalone dive fishery in Western Victoria, Australia
Khageswor Giri, Harry Gorfine
Journal of the Marine Biological Association of the United Kingdom | CAMBRIDGE UNIV PRESS | Published : 2019
Despite the prevalence of catch per unit effort (CPUE) as a key metric in fisheries assessments it can be fraught with inherent problems that often cause its use as an index of abundance to become contentious. This is particularly the case with abalone, a sedentary shellfish targeted by commercial dive fishers around the globe. It is common practice to standardize CPUE to at least partly address issues about how well it reflects the actual abundance of a stock. Differences between standardized and unstandardized trends may lead to controversy between scientists and stakeholders when standardized trends provide a less optimistic picture of stock status. It is within this context that we appli..View full abstract
The senior author undertook the work whilst employed by the Department of Economic Development, Jobs, Transport and Resources, Victoria, Australia in its Agriculture Research Division. The co-author is also employed by the same Department, but his contribution occurred as part of voluntary research activities conducted under the auspices of RMIT University where he holds an unpaid associate position. The study was part of a programme of recurrent State-funded research into abalone stock assessment by Fisheries Victoria, as the State authority responsible for fisheries policy and regulation. Neither author has any commercial interest in the Victorian abalone fishery.