10 results
Environment
Environment
PROJECT NUMBER • 1995-034
PROJECT STATUS:
COMPLETED

Age and growth of jack mackerel, and the age structure of the jack mackerel purse seine catch

Jack mackerel (Trachurus declivis) is a pelagic species that is found in waters off southern Australia and New Zealand. It is the subject of a major fishery, predominantly off Tasmania, with annual landings in the range of 9,000 - 42,000 tonnes. The fishery commenced in the mid 1980s and uses purse...
ORGANISATION:
University of Tasmania (UTAS)
Environment
PROJECT NUMBER • 1994-021
PROJECT STATUS:
COMPLETED

Radiometric aging of sharks

Determining the age of sharks is difficult. A reliable independent method of validating age estimates is needed, apart from relying on tag return data. The success of radiometric analysis for bony fish overseas and in Australia suggested that it would be worth trying the method on sharks. Four...
ORGANISATION:
University of Tasmania (UTAS)
Environment
PROJECT NUMBER • 2012-008
PROJECT STATUS:
COMPLETED

Assessing the impact of marine seismic surveys on southeast Australian scallop and lobster fisheries

The present study, undertaken by University of Tasmania’s Institute for Marine and Antarctic Studies in conjunction with Curtin University’s Centre for Marine Science and Technology, was developed to investigate the potential impact of seismic surveys on economically important fishery...
ORGANISATION:
University of Tasmania (UTAS)
Blank
PROJECT NUMBER • 2009-746
PROJECT STATUS:
COMPLETED

SCRC: Could harvests from abalone stocks be increased through better management of the size limit / quota interaction?

The aims of this project were to: Quantify density-dependent effects on wild abalone growth and meat quality Develop a statistical tool for classification of shell age Use length-based models to test the adequacy of shell age performance measures Use length-based models to determine...
ORGANISATION:
University of Tasmania (UTAS)

El-Nemo SE: identifying management objectives hierarchies and weightings for four key fisheries in South Eastern Australia

Project number: 2009-073
Project Status:
Completed
Budget expenditure: $51,685.88
Principal Investigator: Sarah M. Jennings
Organisation: University of Tasmania (UTAS)
Project start/end date: 26 Jul 2010 - 29 Dec 2010
Contact:
FRDC

Need

While this program will cover the South-Eastern Australia marine region (including State and Commonwealth waters from approximately the South Australia/ Western Australia border to approximately the New South Wales/ Queensland border), the outputs will contribute to developing and implementing relevant national plans and strategies such as the National Climate Change and Fisheries Action Plan (Draft), and the National Adaptation Research Plan for Marine Biodiversity and Resources.

Within the context of the SEAP, the outcomes of this project will be used to inform the need and priorities for additional social and economic research, and will inform subsequent analyses of management and adaptation strategies. It will also complement and inform the development of a vulnerability framework for use in the marine context in SEAP.

Objectives

1. To develop a clear understanding of key dimensions of social and economic risk in the fishing and aquaculture sectors in relation to climate change drivers.
2. To develop a practical method for conducting high-level fisheries sector risk assessments.
3. To conduct a high-level social and economic climate change related risk assessment for selected key fisheries and aquaculture sectors.
4. To identify key fisheries and aquaculture sectors that are most at risk (social and economic) due to climate change drivers.
Environment

El-Nemo SE: risk assessment of impacts of climate change for key species in South Eastern Australia

Project number: 2009-070
Project Status:
Completed
Budget expenditure: $140,163.66
Principal Investigator: Gretta T. Pecl
Organisation: University of Tasmania (UTAS)
Project start/end date: 21 Dec 2009 - 30 Oct 2010
Contact:
FRDC

Need

Climate change is expected to alter physical and chemical oceanographic conditions and processes around Australia, yet the influence this could have on the distributions of various marine species is still relatively unknown. The marine waters of South Eastern Australia are expected to be significantly affected by climate change, experiencing the greatest climate-driven changes in the southern hemisphere over the next century. The impacts and opportunities that will result from these changes will depend, in part, on how well the fisheries and aquaculture sectors and their managers respond to these challenges. A sound risk-based approach to informing both management arrangements and decisions by the sectors will be critical for optimizing outcomes. It is essential that the potential impacts of climate change on key resources are assessed and effectively communicated to support the development of policies that allow industry to minimize adverse effects by optimizing adaptation responses (e.g. by providing flexible management arrangements) and seizing opportunities as they arise (e.g. for species where productivity increases).

This project has been identified as a clear and immediate need through the SEAP Plan (draft) and also establishes a platform of baseline information from which we can start to address several key priority areas identified in the Draft Marine National Adaptation Research Plan (NARP). Priorities identified in the draft NARP include 1/ Which farmed species in which locations are most likely to be impacted as a result of climate change?, and for fisheries 2/ Which fishery stocks, in which locations, are most likely to change as a result of climate change? What will those changes be (e.g., in distribution, productivity) and when are they likely to appear under alternative climate change scenarios? Clearly, comprehensive and synthesised information on the sensitivities and tolerances of key species are the first steps required to address these priorities.

Objectives

1. Identify the life history stages, habitats and aquaculture systems of key species that may be impacted by climate change
2. Identify the physical and chemical parameters that may determine the potential impacts of climate change on key species
3. Conduct a preliminary risk assessment of each key species to the potential impacts of climate change
4. Highlight what additional information on the tolerances and sensitivities will be needed to develop bioclimatic envelope models for key species
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