Optimising the management of tropical reef fish through the development of indigenous scientific capability

Project number: 2013-017
Project Status:
Completed
Budget expenditure: $649,456.00
Principal Investigator: Thor Saunders
Organisation: Department of Agriculture and Fisheries (NT)
Project start/end date: 30 Jun 2013 - 29 Jun 2016
Contact:
FRDC

Need

Tropical reef fish species are popular targets by both the commercial and recreational fishing sectors and are increasingly becoming the focus in developing indigenous fisheries. They are highly prone to overexploitation because of their vulnerable biology, aggregative nature and susceptibility to barotrauma related injuries upon release. In the Northern Territory (NT), these issues have resulted in the substantial declines of key reef species around population centres and managers have been unable to apply appropriate arrangements due to a lack of knowledge on the stock structure, unknown levels of recreational harvest and contested resource ownership and access rights. It is clear that the knowledge gap on stock structure needs to be filled to move towards the spatial management needed to ensure the sustainability of the reef fish resources as well as their optimal allocation amongst sectors.
However, the exploitation of reef fish in remote areas of the NT is increasing due to an expanding recreational fleet, new mining and gas developments placing increased population in these areas and aspirations by the indigenous sector to develop fisheries on these species. While gaining information on stock structure of key reef fish species will greatly aid the sustainable development of fisheries in this area there is still the requirement to ensure regular collection of biological data to monitor these stocks. The most efficient method of obtaining this information is to train indigenous rangers/community members by developing an appropriately certified course. By underpinning the course with the stock structure component of this project, students will also receive skills to assist with co-management and developing sustainable indigenous fisheries.
This project addresses the number one NTFRAB research priority on reef fish biology as well as NT and cross-jurisdictional priorities on indigenous development.

Objectives

1. Gain information on stock structure of key tropical reef fish species
2. Develop indigenous capability in scientific monitoring and participation in co-management through the development of a certified training program
3. Identify appropriate spatial scale of management for tropical reef fish based on biological sustainability and sectoral aspirations

Final report

ISBN: 978-0-7245-4769-2
Author: Thor Saunders

Related research

Environment
Industry
Environment

Using commercial and recreational fisher knowledge to reconstruct historical catch rates for Queensland Snapper (Chrysophrys auratus), Spanish Mackerel (Scomberomorus commerson) and Coral Trout (Plectropomus spp.): long-term data for incorporation into future stock assessments

Project number: 2013-018
Project Status:
Completed
Budget expenditure: $44,800.00
Principal Investigator: Ruth H. Thurstan
Organisation: University of Queensland (UQ)
Project start/end date: 30 Jun 2013 - 22 Dec 2013
Contact:
FRDC

Need

It is acknowledged that there is a lack of information on past fisheries (i.e. catch rates, fishing effort, proportion of recorded landings) throughout Queensland prior to the start of individual logbook records in 1988 (Halliday and Robins 2007). Yet information prior to this period is critical for successful management, as longer-term perspectives provide data that can help reduce uncertainty associated with projected historical catch levels (Campbell et al. 2009). Long-term data also informs past fishery states, thus equipping managers, stock assessment modellers and the fishing industry with knowledge of historical fishery trends. This can then be used to facilitate informed discussion of appropriate management methods into the future.

During a review of the 2008 Queensland snapper stock assessment, Francis (2009) called for consultation of ‘knowledgeable people’ in order to reconstruct past catch histories, thereby improving estimates for future stock assessments. We aim to fill this gap in research for two fish species that are of particular economic, social and cultural importance to Queensland, pink snapper (Pagrus auratus) and Spanish mackerel (Scomberomorus commerson), through the collation and synthesis of commercial and recreational fisher knowledge.

Our project has broad application to the FRDC’s Research Plan, as it provides a long-term view of the use and management of aquatic resources. It applies to the National Fishing and Aquaculture RD&E Strategy, as it will gather knowledge that can inform environmentally sustainable fishing through determining past changes to catch rates, locations fished and relative fishing effort. In addition, perceptions of changes to fisheries and the broader ecosystem as a result of non-fishery drivers, i.e. coastal development, resource management measures and social drivers of change, will be gathered. Our proposed research will focus upon commercial and recreational fishers, thus incorporating the two major sectors involved in wild-catch fisheries.

Objectives

1. • To reconstruct relative changes in abundance and distribution of pink snapper (Pagrus auratus) and Spanish mackerel (Scomberomorus commerson), using commercial and recreational fishers’ testimony and historical data.
2. • ‘To use fishers’ data to expand our temporal scope of knowledge by providing robust historical data, thereby reducing uncertainty in past exploitation rates and making information available for potential use in future management decisions.’
3. • To determine the impact of evolving fishing technologies, fishing effort and changing management regimes upon fish catches and abundance over time.
4. • To compare perceptions of change between commercial and recreational groups, and identify common areas/species of concern held by both groups.