435 results
Environment

Aquatic disease preparedness assessment

Project number: 1995-087
Project Status:
Completed
Budget expenditure: $12,418.00
Principal Investigator: Mark S. Crane
Organisation: CSIRO Australian Animal Health Laboratory
Project start/end date: 20 Nov 1995 - 22 Jun 1998
Contact:
FRDC

Objectives

1. To assess the current fish disease legislation in each state, territory and New Zealand
2. To recommend improvements in the current legislation and lines of command in the event of a serious fish disease outbreak
3. To determine the requirement for chemicals/vaccines for use during a fish disease outbreak

Final report

ISBN: 0-643-06292-0
Author: Mark S. Crane and Grant T. Rawlin
Final Report • 1997-10-22 • 1.45 MB
1995-087-DLD.pdf

Summary

Prior to the initiation of this project, it was recognised that while State/Territory, as well as Commonwealth, legislation is well-developed for the management of traditional stock animal diseases, legislation has not addressed adequately issues concerning aquatic animal diseases and their control. Thus animal health policy makers established a working party to assess the effectiveness of State/Territory aquatic animal disease legislation in the face of hypothetical, severe fisheries disease outbreaks in public waters, aquaculture sites, in finfish and in aquatic invertebrates.

Accordingly, the Working Party visited each State/Territory to discuss with those officials responsible for managing aquatic animal disease outbreaks, the current status of State legislation, whether the legislation is appropriate and whether the State has adequate resources and legislative support to manage effectively aquatic animal disease emergencies. In this way the strengths and weaknesses of each State/Territory with regard to aquatic animal disease preparedness were identified for further consideration by the local authorities. Over the past two years significant progress on aquatic animal health policy development at the Commonwealth and State/Territory levels has been made and is outlined in this report.

Major outcomes of the project include a significant raising of the profile of aquatic animal disease. At both State/Territory and Commonwealth levels the issue of aquatic animal disease, even in the face of the emergence of newer fisheries industries and a growth in fisheries production, had attracted relatively little attention and hence few resources. During the course of the project, there have been interaction with other projects and activities, coordinated by the Department of Primary Industries and Energy, which has had a synergistic effect on the progress of the issue. Recently, there has been very significant progress on aquatic animal health policy development at State/Territory and Commonwealth Government levels.

In the majority of States/Territories, either new or revised legislation has been enacted, is currently being enacted or current legislation is being reviewed to determine whether revised/new legislation is required. Thus, most of the States/Territories have addressed, or are addressing, the legislative issue.

In addition to ensuring appropriate legislation is in place, each State/Territory is responsible for ensuring the legislation is invoked as needed and effective management of aquatic animal disease emergencies is undertaken. Regardless of the scale of the incident the State/Territory should be notified, and should then make an assessment of appropriate action, ensuring that such action is in accordance with national policy.

Management of an aquatic animal disease emergency will require a collaborative approach and will, primarily, involve expertise in aquatic animal biology and aquaculture systems which would normally reside in State Departments of Fisheries or the equivalent, as well as expertise in animal diseases and epizootiology normally available from State Departments of Agriculture or the equivalent. In some cases, this expertise resides within one department (e.g. Departments of Primary Industries and Fisheries) and coordination of the response presents little difficulty. In other cases, the expertise is not centralised and coordination of the response becomes a more complex issue.

A major achievement, clearly evident, was the bringing together of the principal decision makers required in the event of an aquatic animal disease emergency. In some States/Territories these meetings represented the first instance in which this had occurred for the purposes of aquatic animal disease emergency contingency planning. Hence, together with the respective roles and responsibilities, important linkages were immediately put in place which later formed the basis for development of an action plan. In each State/Territory, a theoretical scenario, an aquatic animal disease emergency relevant to the particular State/Territory, was presented and worked through to its conclusion. This illustrated the resources, responsibilities and roles required for effective management of the emergency.

Water abstraction impacts on flow dependent fisheries species of the Northern Territory, Australia - a synthesis of current knowledge and future research needs

Project number: 2021-114
Project Status:
Completed
Budget expenditure: $101,740.68
Principal Investigator: Kaitlyn O'Mara
Organisation: Griffith University Nathan Campus
Project start/end date: 30 Jul 2022 - 30 Jul 2023
Contact:
FRDC

Need

The tropical waters of northern Australia contain unique and diverse aquatic species that are adapted to the seasonally variable climate. Many species rely on seasonal river flows to move, forage, reproduce and fulfil critical life history stages, particularly in ephemeral rivers which become disconnected in the dry season. River flows and harvest are known to influence both freshwater and marine fish and fisheries. However, river flows have been modified in several tropical catchments by water abstraction and development of water storage infrastructure for agriculture and drinking water. Additionally, there is increasing pressure to develop new water resource infrastructure in northern Australia. A large and disparate body of literature exists that has documented the relationships between tropical fish species and the seasonal variations in river flow. Production of several commercially, recreationally, and traditionally important tropical aquatic species is linked to flow, suggesting that these may be at risk from the multiple pressures of water abstraction and harvesting, warranting the need for a synthesis of current knowledge on water abstraction impacts and identification of knowledge gaps for targeted future research.

We will address this priority task through the delivery of a stakeholder targeted synthesis of current knowledge on the impacts of water abstraction on tropical aquatic species by a team of recognised experts who have worked extensively on the flow dependence of tropical aquatic species in northern Australia. Through this synthesis, we aim to increase stakeholder understanding of water abstraction impacts on aquatic species.

Objectives

1. Determine key directives for the synthesis during initial meeting in Darwin with the NT government research advisory committee
2. Review and synthesise relevant grey and published literature
3. Identify potential risks of surface water abstraction on priority fish species and identify critical knowledge gaps and future research needs
4. Share the outcomes with project stakeholders and provide research advice

Final report

Authors: Kaitlyn O’Mara Leah Beesley Keller Kopf Michele Burford Michael Douglas Ben Stewart-Koster Mark Kennard
Final Report • 2023-12-12 • 14.77 MB
2021-114-DLD.pdf

Summary

This project synthesised information that could be used to help guide decision making around the protection of fisheries species that may be impacted by water abstraction. This review was led by Griffith University and conducted in collaboration with the University of Western Australia, Charles Darwin University, and the Northern Territory Fisheries. The synthesis of existing information on the impacts of water abstraction found substantial evidence for impacts on some species and large gaps in the research literature for others. The reviewed studies showed that the severity of predicted impacts varies between river systems and between different modes of water abstraction, as well as with different timing, magnitude, and thresholds of water take. The collective results of these studies modelling potential impacts of water abstraction warrant a precautionary approach to setting water takes, with particular emphasis on ensuring the continuation of high flow years which disproportionately support fishery biomass. It is recommended that the flow dependencies of these species be carefully considered when implementing water policies and research be conducted to fill knowledge gaps for species where little is known about their dependency on the natural flow regime.
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