32 results
Environment
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
TAGS
Rac Qld
SPECIES
Sea Cucumbers
Environment
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
TAGS
Stock Assessment
Environment
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
TAGS
Vaccine
SPECIES
Atlantic Salmon
Environment

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

Project number: 1993-077
Project Status:
Completed
Budget expenditure: $290,692.00
Principal Investigator: Vincent Lyne
Organisation: CSIRO Oceans and Atmosphere Hobart
Project start/end date: 22 Sep 1993 - 11 Jun 1999
:
TAGS
Oceanography
Fishing Gear
Fishing Effort
Environmental Impact
Data

Objectives

1. To provide quantative interpretation incorporating environmental effect of SBT CPUE for the East Tasmanian fishery
2. To develop scientific support on targeting strategies for the Australian longline fleet

Final report

Author: Vincent Lyne
Final Report • 2011-11-24 • 2.54 MB
1993-077-DLD.pdf

Summary

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 catch-per-unit-effort (CPUE) as well as the size of SBT and attempts were made to relate these to environmental influences. Of these variations, spatial temperature variations in the study zone, in association with bathymetry, appear to influence the general spatial distribution of CPUE and size of SBT. Catch rates and size of SBT off eastern and southern Tasmania are significantly correlated with the Southern Oscillation Index (SOI), opening the possibility of predicting catch rates through forecasts of the SOI index. A wider study examining the downstream effects of the western surface fishery off WA and SA is recommended to examine the impacts of regional variations in fishing activities. There is a noticeable increase in the mean value of catch rates with full moon, particularly the waxing phase. Overall, the changes in mean catch rates with moon phase are small and reflect. A bias by outliers of large catch rates which are inferred as being due to enhanced aggregations during full moon. Observations of large SBT in the northern section of the fishing zone appear to be related to the unique energetic oceanic conditions off southern NSW. Temporal variation in CPUE from 1990-1995 do not appear to be significantly correlated with the chosen environmental factors although the variance of CPUE is correlated to the extent of warn/cold water masses. The consistency of CPUE, latter than CPUE itself, appears to be more strongly influenced by local environmental factors.  
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
TAGS
Survey
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Research

Species

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