Atlantic Salmon Aquaculture Subprogram: assessment of the environmental impacts & sediment remediation potential associated with copper contamination from antifouling paint and associated recommendations for management
Industry monitoring has identified sizeable increases in sediment loading of copper and zinc at farm sites in the Huon and D’Entrecasteaux Channel, with Cu levels in some sites exceeding existing management trigger levels (ANZECC/ARMCANZ (2000)). This is a major concern for both farmers who are reliant on antifoulant use to ensure adequate environmental conditions within pens for fish growth and stock health. While there is some evidence to suggest that paint-associated copper may be less readily bioavailable than other forms, this information is currently insufficient to warrant changes to existing guidelines. Consequently the industry needs to better define the potential for environmental impacts associated with copper contamination, and a strategy for management and remediation of these sediments needs to be developed.
There is an urgent need to understand both the consequences of copper accumulation and the conditions that affect copper build up under cages, and to incorporate this information into management practice. Specifically, we need to
i) develop management limits for sediments,
ii) determine reliable approaches for monitoring Cu bioavailability,
iii) determine the potential for natural or assisted remediation (can it occur and can it be managed),
iv) the implications of farm management practices on sediment contamination (i.e. fallowing, in situ cleaning, sediment disturbance).
This information will enable the development and implementation of comprehensive management strategies.
Final report
FRDC- DCCEE: estuarine and nearshore ecosystems – assessing alternative adaptive management strategies for the management of estuarine and coastal ecosystems
Global issues require partnerships and concerted action. A partnership is in place across key agencies (DCC&EE, FRDC, NCCARF, DAFF and State/Territory) to assess adaptation strategies for marine biodiversity and fisheries, but there is no national program to set directions for adaptation strategies for highly vulnerable Estuarine and Nearshore Environments (E&NEs). This gap is highlighted with neither NCCARF-ARNs for Marine or Freshwater addressing issues for E&NEs, as recognised in the Key Elements of the Scoping Brief.
E&NEs are critical transition zones between terrestrial, freshwater and marine ecosystems, providing key ecosystem functions (e.g. nutrient exchange and cycling) and associated services (e.g. nursery ground provision). Impacts of sea-level rise, altered hydrology and increasing temperatures will be compounded through interactions with human structures and management interventions. Consequently, there is a strong need to assess the relative importance of Climate Change impacts versus those associated with other pressures, and to identify priorities and strategies for adaptation that support clear and consistent goal setting by policy and management agencies. DCC&EE-FRDC have identified the need to build on the large body of ecological and Climate Change impact work, and focus on developing a suite of strategies to support the adaptive management of biodiversity and fisheries/aquaculture values in E&NEs.
This proposal also addresses:
a) NARP Priority Research Questions 3.1 by determining the components of coastal ecosystems most in need of adaptation management based on ecological information about their status, value and vulnerability, and, 3.4 by defining ecologically sound management options to enable adaptation of practices to enhance system resilience and adjustment time, and by modelling outcomes of different options based on implications for ecosystem functions.
b) NCCAP for Fisheries and Aquaculture strategy (NCCAP 2010) for “Improving understanding and awareness of Climate Change impacts on fisheries” and “facilitating ongoing assessment and monitoring of Climate Change impacts at suitable scales”.
Final report
FRDC-DCCEE: preparing fisheries for climate change: identifying adaptation options for four key fisheries in South Eastern Australia
RFIDS: implications of climate change for recreational fishers and the recreational fishing industry
Climate change is manifesting in marine environments. Additional to climate variability there is documented shifts in ocean currents - temperature, behaviour and spatial impact. Biotic indications eg species changes in abundance and range suggest impacts are at a level greater than for terrestrial ecosystems and uses. Coupled with this is the common property nature of fisheries resources. Management imperatives are already upon Government and all key sectors - conservation, commercial and recreational fishery management and aquaculture.
The first two challenges are to -
a) smartly adapt to biotic changes and variations in abundance
b) foster a more flexible and responsive approach to marine management.
Climate change is a political issue - the public policy issue that has been most incompetently dealt with by Australia's political leaders. Community understanding of the complexities of climate change and how Australia should respond is varied with multiple areas for confusion and misunderstanding. Additionally, those promoting a mitigation response have been alarmist in their predictions - well beyond the science evidence.
With this confusion as to the implications of climate change and options for adaptation and mitigation strategies, informed debate is extremely difficult. The recreational fishing sector is no different to the wider community.
Given the economic and social importance of recreational fishing in Australia, there is a national need and strong regional demand for strategies and adaptation activities and management systems that respond wisely to climate change.
The second two challenges are to:
c) ensure accurate information on climate change information is available and is placed in context with other aspects such as habitat loss and water quality
d) foster knowledge and adaptation strategies from within the recreational fishing sector so that the sector can play its role in advocacy and public policy development.
Final report
RFIDS: a coordinated national data collection for recreational fishing in Australia
In many states and regions around Australia there is a lack of current and reliable recreational fisheries data (e.g. participation rates, catch) that can be used in decision-making processes. Since the stock boundaries of some recreationally-important species can span several State and Federal jurisdictions, reliable stock-specific data is needed. The results of the last national recreational fishing survey undertaken in 2000-2001 are now considered outdated in many respects, or are of limited use for rarely-caught species and some fisheries or regions due to issues of scale.
Since the national survey, various recreational fishing surveys have been undertaken by State fisheries agencies to address their own specific management issues. These surveys have generally been telephone-diary approaches based on the National survey methodology. Additionally, community-based recreational fishing data collection have been undertaken at regional levels by community and recreational fishing groups. However, there has been a lack of coordination between agencies to report at a national level. Therefore, there is a need to assess the feasibility of aggregating data from these surveys to provide reliable up-to-date information at regional and national levels.
Final report
Scoping current and future genetic tools, their limitations and their applications for wild fisheries management
The FRDC has commissioned a review of the role that existing and future genetic technologies may play in addressing critical challenges facing the exploitation of wild fisheries. Wild fisheries management has been assisted by genetic research for over 50 years, and in Australia this research has been largely funded by the FRDC. Both fisheries management and the methods of genetic analysis have changed significantly during this time. The capability of genetic technologies is ever-broadening, whilst fisheries managers must address fundamental challenges such as assessing the impact of fishing on target species and the ecosystem, as well as increasingly diverse issues such as illegal trade. Given these dynamics, as well as perceptions that communication between fisheries managers and geneticists has been poor in some cases, there is a strong need to reassess the ways in which genetic research can contribute to fisheries, and for fishery managers and researchers, industry representatives and fisheries geneticists to critically examine each other’s needs and capabilities.
There have been numerous recent reviews of the contributions of genetics to fisheries management overseas [e.g. 1, 2]. However, these reviews may be difficult to access, they do not target an industry audience, and none focus on the Australian fisheries context. An Australian-focused assessment that is based on both literature surveys as well as strong stakeholder engagement will promote clear joint understanding of the needs and capabilities of fishing industry, fisheries science and fisheries geneticists respectively. It will lead to more coordinated and consistent approaches to the application of genetic technologies in Australia, greater uptake of research outcomes, and build an enduring platform for future successes in genetic research and fisheries management.