32 results
Environment
PROJECT NUMBER • 2012-200
PROJECT STATUS:
COMPLETED

Evaluating rotational harvest strategies for sea cucumber fisheries

This project evaluated the benefits of a rotational harvest strategy (the Rotational Zoning Scheme - RZS) in the Queensland East Coast Sea Cucumber (Bêche-de-mer) Fishery and found that, in general, the current management arrangements result in a low risk to most fishery species and reduce the...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
Environment
PROJECT NUMBER • 2012-201
PROJECT STATUS:
COMPLETED

Improve catch rate standardizations to account for changes in targeting

In Australia many stock assessments are dependent upon catch-per-unit-effort (CPUE) to act as an index of relative abundance of fished stocks through time. But CPUE trends can be affected by many factors other than just stock size changes. Around Australia, and internationally, numerous and...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart

ERA extension to assess cumulative effects of fishing on species

Project number: 2011-029
Project Status:
Completed
Budget expenditure: $197,367.00
Principal Investigator: Shijie Zhou
Organisation: CSIRO Oceans and Atmosphere Hobart
Project start/end date: 28 Sep 2011 - 14 Oct 2012
Contact:
FRDC

Need

National and international fisheries management policies require that the exploitation of fisheries resources should be conducted in a manner consistent with the principles of ecologically sustainable development, in particular the need to consider the impact of fishing activities on non-target species and the long term sustainability of the marine environment. AFMA’s Ecological Risk Management (ERM) framework details a process for assessing and progressively addressing the impacts that fisheries’ activities have on marine ecosystems based on the ecological risk assessment for the effect of fishing (ERAEF). The ERAEF, which assesses species-by-species impacts of fishing on all species encountering a particular fishing activity, is perhaps the most comprehensive assessment method supporting ecosystem-based fisheries management currently available. This method has been applied to the majority of Commonwealth fisheries, however, these assessments only take account of risk to individual species from individual Commonwealth fisheries or sub-fisheries. It is the cumulative impact from all fisheries/sub-fisheries on each individual species that determines the species’ overall sustainability. However, the cumulative risk to a species across all Commonwealth and state-managed fisheries in which it is captured cannot currently be quantified at level 2 in ERAEF, the productivity-susceptibility assessment (PSA), nor at level 3 sustainability assessment for fishing effect (SAFE) for most fisheries. A recent study shows potentially very high levels of overlap for many species across several Commonwealth fisheries, and some state-based fishery assessments have also highlighted the importance of extending the ERAEF toolbox to include a cumulative risk assessment tool. There is an urgent need to develop methods and conduct ecological risk assessments on the cumulative impact of all species encountered by multiple fisheries.

Objectives

1. Scope the range of applications and review existing methods for measuring cumulative effects of capture fishing on species that are caught across a number of different fisheries or sub-fisheries.
2. Scope the different data sources that are currently available and those that may be required to include assessment of cumulative effects under future ERAs.
3. Develop methods for assessing cumulative risk from multiple fisheries or sub-fisheries including recreational and international fisheries, where feasible, on each individual fish species and stock, especially methods that can be applied to data poor fisheries.
4. Apply the method to selected Commonwealth fisheries that operate in the same area with high levels of effort and multiple gear types, e.g., in the southeast region, with further consultation with AFMA.
5. Describe the trade-off between the costs of collecting data for ERA as compared to the benefit returned to the industry/management of the approach.

Final report

ISBN: 978-1-4863-0153-9
Author: Shijie Zhou
Environment
PROJECT NUMBER • 2010-741
PROJECT STATUS:
COMPLETED

Seafood CRC: synopsis of Amoebic Gill Disease (AGD) research to date and review/recommendation of future AGD related R&D directions including the development of a vaccine for AGD

The major outcome of this project was the development of a 2011 R&D strategy by the TSGA. This included a list of R&D priorities for 2011, including AGD related research, and a specific list of areas of interest for 2011. Subsequent to this the TSGA received 7 project proposals pertaining to...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
Environment
PROJECT NUMBER • 1993-077
PROJECT STATUS:
COMPLETED

Quantitative interpretation of fine-scale SBT catch per unit effort for south east Australia

An analysis of spatial and temporal variations in catch rates of Southern Bluefin Tuna (SBT) in relation to environmental factors was conducted for the region south of Tasmania up to 1he southern half of New South Wales. Substantial temporal and spatial variations were evident in...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
Industry
Environment
PROJECT NUMBER • 2014-204
PROJECT STATUS:
COMPLETED

Implications of current spatial management measures on AFMA ERAs for habitats

In this project, CSIRO researchers implemented the first Australia-wide spatial approach to quantifying the exposure of mapped seabed assemblages to the footprints of Commonwealth demersal trawl fisheries, as well as their spatial protection in areas closed to trawling. These outputs are assisting...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
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