3,912 results
Environment
PROJECT NUMBER • 1995-031
PROJECT STATUS:
COMPLETED

Development of acoustic methods to survey orange roughy in the eastern and southern zones

Three acoustic surveys were carried out between 17 and 20 July 1996 on the orange roughy spawning ground off St. Helens, Tasmania. A combination of 22 demersal trawls and ensonification with three frequencies (12, 38 and 120 kHz) was used to assess the species composition around the spawning hill....
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
Environment
PROJECT NUMBER • 1995-025
PROJECT STATUS:
COMPLETED

Biological and ecological research needed for the effective management of the bar-cheeked coral trout and the chinaman cod, including an investigation into the factors controlling sex-change in the serranids (cods, groupers and coral trout).

This study provides detailed biological and ecological information on the chinaman cod, Epinephelus rivulatus, and biological information on the bar-cheeked coral trout, Plectropomus maculatus, in West Australian waters. Both of these species are members of a large group of predatory fish known as...
ORGANISATION:
University of Western Australia (UWA)
Environment
PROJECT NUMBER • 1995-022
PROJECT STATUS:
COMPLETED

Population dynamics and management of spanner crabs in southern Queensland

Spanner crabs (Ranina ranina) represent a valuable resource to southern Queensland and northern NSW. The fishery became established in the late 1970s, and as a result of an almost exponential increase in fishing effort between 1992 and 1995 an output-controlled limited entry management arrangement...
ORGANISATION:
Department of Agriculture and Fisheries EcoScience Precinct
Environment
PROJECT NUMBER • 1995-020
PROJECT STATUS:
COMPLETED

Mortality, growth and movements of the western rock lobster, Panulirus cygnus

The very high levels of exploitation in the western rock lobster fishery have resulted in the introduction of regional or zone-specific management arrangements in recent years. This is a permanent departure from an holistic approach to the fishery’s regulation. A detailed knowledge of...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
Environment
PROJECT NUMBER • 1995-017
PROJECT STATUS:
COMPLETED

Condition and its assessment in the southern rock lobster (Jasus edwardsii). Assessment of condition indices and moult staging techniques

In July 1993, a program was initiated by the South Australian Research and Development Institute (SARDI) and the South Australian Rock Lobster Research Association (SARLRA) to study the population dynamics of the Southern Rock Lobster. The study fitted with, and became part of, the tri-state...
ORGANISATION:
SARDI Food Safety and Innovation
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
Environment
PROJECT NUMBER • 1995-015
PROJECT STATUS:
COMPLETED

Estimation of population parameters for Australian prawn fisheries

One of the main objectives of fisheries management is to ensure the sustainability of fished stocks. To reach this objective scientists have to adequately assess the status of fished populations with quantitative models of the fishery systems. Most of these models require estimates of population...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
Environment
Environment
PROJECT NUMBER • 1995-014
PROJECT STATUS:
COMPLETED

Indices of recruitment and effective spawning for tiger prawns stocks in the Northern Prawn Fishery

In the mid to late 1980s NORMAC began to suspect that tiger prawn spawning stocks in the NPF may have been reduced by fishing to levels that reduced recruitment to the fishery. A vessel buy-back scheme and other effort reductions were introduced to reverse this trend but, by the mid-1990s, the...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
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