422 results

A comprehensive ESD analysis of a fishery: the incorporation of regulatory, ecological, economic and sociological aspects

Project number: 2007-013
Project Status:
Completed
Budget expenditure: $161,461.50
Principal Investigator: Tor J. Hundloe
Organisation: WHAT
Project start/end date: 28 Aug 2007 - 30 Jun 2008
Contact:
FRDC

Need

This has been covered in both the Background and Consultation. The benefits of including social science and economic information in fisheries management are not well recognised. The bringing together on one agenda – at the one time and one place – of the ecological, economic, and sociological aspects simply does not occur – with one or two notable exceptions.

One reason for this is that fisheries managers take the view that it is simply too difficult to do because of the lack of appropriate scale data and its application. On the other hand, fisheries managers know that what is missing is important.

Written-up in easy-to-read English, with informative illustrations, the proposed “How To Guide” will be an invaluable tool for to-day’s managers and source for the training of the next generation.

Objectives

1. Provide a tool for today s fisheries managers
2. Provide a reference/text for the next generation of managers

Comparison of the engineering and catching performance of existing prawn trawls in the Spencer Gulf prawn fishery to three new prawn trawl designs

Project number: 1984-013
Project Status:
Completed
Budget expenditure: $0.00
Organisation: Australian Maritime College (AMC)
Project start/end date: 28 Dec 1985 - 31 Dec 1985
Contact:
FRDC

Objectives

1. Measure the engineering of six prawn trawl designs.
2. Investigate the change in drag & spread using different sized otterboards, the emphasis of the trials being reduced drag & increased performance in net opening

Final report

Final Report • 2017-09-29 • 1.33 MB
1984-013-DLD.pdf

Summary

In 1981-82 the cost of fuel and oil in the Northern Prawn Fishery amounted to 25% ($M23.65) of the total costs for a prawn trawler (Hundloe 1984). In the East Coast Prawn Fishery, fuel and oi 1 amounted to 24% ($M9.77) of the costs (BAE 1984). In recent years the dramatic rise In fuel prices has prompted many people to look closely at ways of reducing fuel costs. Much of this work has been directed towards improving the engineering performance of trawl gear. Van Marlen ( 1982) showed that total gear drag could be reduced by using larger meshes in the fore parts of midwater trawls. Chopin ( 1982) suggested that US shrimp trawls could have gear drag reduced by increasing the mesh size of the fore parts of the trawl. The design of more efficient otterboards (Karlsen 1982), (Lee and Mel lwane 1982), (Wray 1986) could also reduce the total gear drag as might the correct choice of angle of attack (FAO 1974), (Wray 1986).

The large variation in net designs, otterboard sizes and otterboard angles used in similar prawn fisheries in Australia has led many fishermen to question the choice of particular combinations of trawl gear.

This paper is the result of a joint submission by the Spencer Gulf and West Coast Prawn Boat Owners Association and the Australian Maritime College, Launceston, Tasmania to the Fishing Industry Research Trust Account (FIRTA). The performance of different combinations of conventional trawl gear used In the Spencer Gulf Prawn Trawl fishery Is compared with three East Coast prawn trawl gears.

Environment
PROJECT NUMBER • 1989-013
PROJECT STATUS:
COMPLETED

Causes of decline in stocks of commercially important prawns in the Northern Prawn Fishery

The following report is a description of the two FIRTA projects (85/85 & 89/13) which examined recruitment processes in penaeids at Albatross Bay in the northeastern Gulf of Carpentaria over the years 1985 to 1992. The aim of the first of the two projects was to identify the main factors which...
ORGANISATION:
CSIRO Oceans and Atmosphere Cleveland
Environment
Environment
Blank
PROJECT NUMBER • 2019-013
PROJECT STATUS:
COMPLETED

Modelling environmental changes and effects on wild-caught species in Queensland

This project studied environmental factors which may be influencing the recruitment, catchability or productivity of Snapper, Pearl Perch, and Spanner Crab stocks in Queensland. Two environmental variables: GSLA and Chl-a were found to have strong associations with either abundance or catchability...
ORGANISATION:
University of Queensland (UQ)
Industry
PROJECT NUMBER • 2017-013
PROJECT STATUS:
COMPLETED

Rebuilding Southern Rock Lobster stocks on the east coast of Tasmania: informing options for management

Understanding relationships between fisher behaviour, their expectations/aspirations, responses to changes in stock status and to management intervention is critical when implementing effective management strategies. This project aims to inform on the practical challenges to achieving the stock...
ORGANISATION:
University of Tasmania (UTAS)
View Filter

Species

Organisation