172 results

Utilisation of Restored Wetlands by Fish and Invertebrates

Project number: 1995-150
Project Status:
Completed
Budget expenditure: $148,336.13
Principal Investigator: Philip Gibbs
Organisation: Department of Primary Industries and Regional Development (NSW)
Project start/end date: 29 Jun 1995 - 30 Jun 2000
Contact:
FRDC

Objectives

1. To demonstrate whether fish and invertebrates use 'restored' wetlands.
2. To determine if the changed habitat within the wetlands sustains fish and invertebrate communities similar to other sites within the Macleay and Hunter estuaries and at sites within comparable reference estuaries.
3. To determine appropriate mechanisms for minimising the impacts of releasing low dissolved oxygen and low pH water to the estuary when the levees and floodgates are initially breached.
4. To identify the initial rate of recovery following opening / removal of the flood mitigation works and to determine whether additional intervention is required to assist the regeneration of fish habitat.
Industry
Environment

Fish attracting system

Project number: 1981-067
Project Status:
Completed
Budget expenditure: $0.00
Organisation: Department of Primary Industries and Regional Development (NSW)
Project start/end date: 28 Dec 1985 - 31 Dec 1985
Contact:
FRDC

Objectives

1. Study use of mid-water and surface structures (fish aggregating devices) in attracting commercial species of pelagic fish in economic quantities

Final report

Final Report • 1985-12-31 • 1.75 MB
1981-067-DLD.pdf

Summary

The purpose of this project was to study the use of mid-water and surface structures (Fish Aggregating Devices - F.A.D.'s) in attracting commercial species of pelagic fish in economic quantities.
Industry
Environment
PROJECT NUMBER • 1989-081
PROJECT STATUS:
COMPLETED

Red spot disease of sea mullet (Mugil cephalus)

Results of a previous FIRTA-funded project (86/53) indicated that red spot disease (RSD), a cutaneous ulcerative disease of estuarine fish, is caused by a number of interacting factors. The study showed that lower catchment rainfall is an important determinant of RSD outbreak occurrence. The study...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
Environment
PROJECT NUMBER • 1985-071
PROJECT STATUS:
COMPLETED

Redfish tagging study, New South Wales

The purpose of this report is to describe the methods used for tagging redfish and discuss the results achieved by the various segments of the project. In conjunction with the tagging study, data on commercial catches of redfish, fishing effort and catch length frequency were also analysed, and the...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
Industry
PROJECT NUMBER • 1978-044
PROJECT STATUS:
COMPLETED

Underwater measurement of trawl gear in operation

The objective of this report was to measure trawling gear with the Trawl Instrumentation System (TIS). The method was similar to that described in Cruise Report no. 76. Each net and door combination was towed at various log speeds, and was maintained at each log speed for about 20 minutes while...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
Environment
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