6 results
Industry

Determination of cost effective techniques to monitor recreational catch and effort in Western Australian demersal finfish fisheries

Project number: 2005-034
Project Status:
Completed
Budget expenditure: $277,720.00
Principal Investigator: Warrick J. Fletcher
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 29 Apr 2005 - 6 Mar 2014
Contact:
FRDC

Need

The need for regular monitoring of recreational fishing activity in WA will increase substantially over the coming years. This increase will result from the overarching requirement for better data to enable the management of those fish stocks where recreational fishing takes a major component of the catch. In addition, these data will also be needed as inputs to the process of determining explicit sectoral allocations (e.g. between recreational, commercial, indigenous)through the Integrated Fisheries Management (IFM) processes which have recently been initiated (see DOF, 2003 for details). Moreover, some level of monitoring will be needed to determine if the outcomes of management arrangements do result in the catch of each sector (including the recreational sector) meeting these allocation decisions. One of the first fisheries to be put through this IFM process will be the west coast demersal (offshore) finfish fishery.

The traditional methods for estimating recreational catch and effort have been either creel-based or diary based surveys. Both of these methods can have a relatively high cost with each generating estimates that are subject to a number of different biases. Given that allocations decisions for these fisheries will be based on the estimates generated from surveys, all stakeholder groups are demanding that there is some assessment of the accuracy of any estimates produced. Such analyses are best completed by the simultaneous collection of data by alternative methods to allow suitable comparisons to be made of any differences in the estimates.

Furthermore, whilst there is little doubt that one or other of these intensive survey methods will need to be completed at periodic (eg 3 to 5 year) intervals, having information at a lower precision level between these intervals (i.e. annually) to provide an indication of whether recreational catches are remaining steady, increasing or declining within anticipated boundaries of any allocation will be of great benefit (possibly essential) to the effective management of the IFM outcomes.

Given that the IFM management of these offshore (boat-based) demersal fisheries is likely to be focused on only a relatively small number of indicator species, rather than trying to manage every species directly, ongoing indicator surveys may be able to use different sampling strategies to those used in the standard surveys. In addition, alternative methods of data collection are now more available. These include the use of remote monitoring technology (e.g. cameras), using information already collected by other agencies (boat ramp usage rates) and the potential to use data collected by the Department’s compliance staff in a more directed fashion.

Understanding the relative precision and accuracy of each of the various standard and innovative approaches along with their relative costs, benefits, limitations and interactions will be essential for determining what ongoing sampling methods need to be used to monitor the IFM outcomes for this fishery. If successful, these same techniques will be used to assist determine the appropriate sampling scheme for other fisheries requiring the ongoing collection of recreational data.

DoF (2003) Report to the Minister for Agriculture, Forestry and Fisheries by the Integrated Fisheries Management Review Committee - Fisheries Management Paper No. 165

Objectives

1. Complete a series of concurrent catch and effort surveys of the West Coast Demersal Recreational Fishery using a variety of survey techniques.
2. Compare the precision and accuracy of estimates generated using these various techniques
3. Using cost benefit analysis, produce a series of options to monitor annual catch and effort for a range of precision levels and indicator species

Final report

ISBN: 978-1-921845-64-2
Author: Rick Fletcher

Enhancing the availability of pearl oysters for pearl cultivation in WA

Project number: 1985-058
Project Status:
Completed
Budget expenditure: $0.00
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 28 Dec 1987 - 31 Dec 1987
Contact:
FRDC

Objectives

1. Husbandry techniques for nursery & ongrowing culture of hatchery-produced spat for pearl cultivation.
2. Build, evaluate on/offshore equip. Monitor environmental & biological conditions predisposing mortality on transfer to farms.
3. Develop husbandry protocol to prevent & contain mortality outbreak

Final report

Author: Robert A Rose
Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Environment
PROJECT NUMBER • 1988-093
PROJECT STATUS:
COMPLETED

An assessment of stocks of the pearl oyster Pinctada maxima

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were: The location of stocks within Western Australia, both geographically and by depth. ...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
PROJECT NUMBER • 1993-091
PROJECT STATUS:
COMPLETED

Fishery independent study of the spawning stock of the western rock lobster

The fishery for western lobster (Panulirus cygnus) has supported an annual catch of about 10 500 tonnes per annum over the last twenty years and is worth between $200-300 million per annum. The fishery has been experiencing increasing exploitation rates over time and estimates in the...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
PROJECT NUMBER • 2018-050
PROJECT STATUS:
COMPLETED

Where did the Snapper go? Determining factors influencing the recovery of Snapper stocks on the west coast of Australia

This report describes a collaborative project focused on Snapper (Chrysophrys auratus) carried out between 2018 and 2021 by researchers from the Western Australian Department of Primary Industries and Regional Development (DPIRD), Flinders University, University of Adelaide, University of Western...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
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