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Tactical Research Fund: Using innovative techniques to analyse trends in abundance for non-target species

Project number: 2010-057
Project Status:
Completed
Budget expenditure: $68,235.00
Principal Investigator: Malcolm Haddon
Organisation: CSIRO Oceans and Atmosphere Hobart
Project start/end date: 30 Nov 2010 - 30 Jul 2011
Contact:
FRDC

Need

EBFM requires performance indicators for a wide range of species that interact with fisheries, and systems to monitor those performance indicators. However, there is no routine monitoring of the status of the many commercially important byproduct and bycatch species. The assessment of these non-target species remains important in terms of the Commonwealth Harvest Strategy Policy and AFMA have expressed a need for a solution to how to assess the relative status of these species. Such monitoring is required for strategic assessment under the EPBC Act (1997).

Most of non-target species are not under quota and while not directly targeted they can still experience significant fishing mortality and add value to the landed catch. Currently, if they are assessed at all, the assessments merely apply the same strategies as adopted for target species. There is often a perception that CPUE should be disregarded “because the species was not targeted”. There is a need to determine whether alternative methods should be applied to such species that take into account the fact that their catch is incidental to the main activities of the fishers and hence the fishery dependent data for the non-target species will have different qualities. By definition these fisheries are multi-species in nature and this too can complicate their assessment. Technically this is not a trivial problem and more clarity is needed concerning the scope of the issue and how to deal with it. Rather than launch immediately into a relatively long term attempt at finding a solution, a more efficient approach is proposed that involves expert examination and rapid review to map the road ahead. Hence there is a need to conduct workshops aimed at clarifying the management requirements and the most cost effective approach to solving these management issues, which apply to all multi-species data poor fisheries.

Objectives

1. Test analysis methods against available datasets capable of providing trend in abundance estimates for byproduct and bycatch species
2. Conduct two workshops, aimed at identifying the management issues and the techniques available for analyzing trends in abundance in non-target species.

Final report

ISBN: 978-0-643-10812-7
Author: Malcolm Haddon
Industry
Environment
PROJECT NUMBER • 1995-016
PROJECT STATUS:
COMPLETED

The impact of changes in fishing patterns on red-legged banana prawns (Penaeus indicus) in the Joseph Bonaparte Gulf

The fishery for red-legged banana prawns in the Joseph Bonaparte Gulf (JBG) developed in the early 1980s. Since then, fishing effort has varied from 700 to 2600 boat-days per year and catches range from 200 to 1000 tonnes per year. Initially the JBG fishery developed as an alternative to fishing in...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
Industry
Industry
Industry
Industry
PROJECT NUMBER • 2016-018
PROJECT STATUS:
COMPLETED

Determination of the spatial dynamics and movement rates of the principal target species within the Eastern Tuna and Billfish Fishery and connectivity with the broader western and central Pacific Ocean – beyond tagging

Accessing samples from broadbill swordfish from two sites within the WCPFC area was particularly problematic and was exacerbated by a poor fishing season in 2019. This resulted in samples for broadbill swordfish consisting of samples collected from the ETBF (2 years), Norfolk Island (1 year) and New...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
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