Exploring New Resources For The West Coast Deep Sea Crustacean Managed Fishery In Western Australia
Funder
Fisheries Research and Development Corporation
Funding Amount
$278,047.00
Summary
This project will address the strategic challenge of identifying additional resources for the WCDSCMF. With the onset of the COVID-19 pandemic in early 2020, export markets in China closed, rendering the highly valued crystal crab fishery uneconomical. When the markets again opened within China and demand grew, the logistics of moving live crab to China became the next hurdle for the fishery due to a lack of air space and the related high cost of transport. Logistics remained difficult for all o ....This project will address the strategic challenge of identifying additional resources for the WCDSCMF. With the onset of the COVID-19 pandemic in early 2020, export markets in China closed, rendering the highly valued crystal crab fishery uneconomical. When the markets again opened within China and demand grew, the logistics of moving live crab to China became the next hurdle for the fishery due to a lack of air space and the related high cost of transport. Logistics remained difficult for all of 2020 and into 2021. Although fishers are now again able to sell their catch within this premium market, they have started to experience a cost squeeze, with rising costs associated with bait, salaries and their main input, diesel fuel. This fishery necessitates steaming large distances from port to the fishing grounds over expansive areas that they do not fish. If additional fishing gear could be deployed when traversing these distances, the fishery has the opportunity to expand its revenue with little increases in costs. Using several different pots that have been successful around Australia and the world, this study will deploy these across a minimum of four latitudes along the west coast (additional latitudes added based on vessel behaviour) encompassed by the WCDSCMF. Across these latitudes, we will target 9 depth categories, starting at 150M to 1000M. Additionally, cameras and Conductivity Temperature and Depth (CTDs) loggers will be attached to the pots to analyse the species present, habitat and water chemistry, which allows better prediction of species associations. In doing this, this project will explore and identify possible viable commercial species that the WCDSCMF can include in their landings.
Objectives: 1. Identification of potential new marine crustacean resources located within the water of the WCDSCMF. 2. Document associations between all marine crustacean species and their habitat within the grounds of the WCDSCMF to identify potential un-fished marine resources. 3. Trial modified traps designed to catch potential new crustacean stocks. Read moreRead less
Giant Crab Enhanced Data Collection - Innovative Approaches To Enhance Data Collection In The Victorian, South Australian And Tasmanian Giant Crab Fisheries
Funder
Fisheries Research and Development Corporation
Funding Amount
$325,241.00
Summary
Giant Crabs are a long, lived, slow reproducing xanthoid crab distributed from southern Western Australia to central New South Wales that are considered to be a single stock across southern Australia.
The giant crab fishery (GCF) across southern Australia has a small tonnage of large, individually valuable animals. Despite the implementation of harvest strategies and management plans guiding the setting of conservative TACC’s, declining trends are evident across the shared Southern Aus ....Giant Crabs are a long, lived, slow reproducing xanthoid crab distributed from southern Western Australia to central New South Wales that are considered to be a single stock across southern Australia.
The giant crab fishery (GCF) across southern Australia has a small tonnage of large, individually valuable animals. Despite the implementation of harvest strategies and management plans guiding the setting of conservative TACC’s, declining trends are evident across the shared Southern Australian resource.
The fishery has had ongoing problems collecting quality stock assessment data, leading to uncertainty in the assessment and management. Owing to the size of the fishery, and the remote nature of the fishing operations, assessments now rely on fisher dependant catch rate data with an inherent high level of volatility due to the small number of operators.
Attempts to improve the collection of fishery data over the years have been challenging, in particular for fisher-based collection of length-frequency data from volunteer measuring programs.
Innovative data collection methods for small scale fisheries such as the GCF are required to improve the monitoring of stock status of this important commercial fishery and enhance long-term sustainability of the Giant Crab resource.
A length based model has previously been developed and was designed to integrate assessments across the jurisdictions. The model for giant crab and was being used for South Australia and Tasmania but was not applied to Victoria due to data limitations. In recent years the modelling has discontinued in SA and Tas because of insufficient length frequency data, which compounded uncertainty present due to weak growth data. The lack of length data in previous years was the critical change that has forced the model to be discontinued. So our ability to understand changes in the stock has become weakest at precisely the period in the history of the fishery when information is most needed. This project is designed specifically in response to this need to address the lack of data through development of an efficient method to collect LF information, with minimal burden on fishers to improve accuracy of stock assessments.
Objectives: 1. Develop effective low-cost data collection method specific to Giant Crab 2. Trial and refine new data collection method 3. Analysis of fishery-independent biological data and investigation of usability to enhance assessment of Victorian, Tasmanian and South Australian giant crab fisheries Read moreRead less
Investigation And Improvement Of Live Blue Swimmer Crab Handling In NSW
Funder
Fisheries Research and Development Corporation
Funding Amount
$102,107.00
Summary
As the NSW fishing industry moves forward into the future with quota managed fisheries, there is a need for industry to develop procedures and process on catching, holding and transporting Blue swimmer crab that would value add to the wild harvest sector’s product – particularly for the live sales market.
The current market is predominantly made of sales of cooked and raw blue swimmer crabs. An approx. price range of blue swimmer crab for 2015 / 2016 was $8.50 < $9.00 per kilo. The liv ....As the NSW fishing industry moves forward into the future with quota managed fisheries, there is a need for industry to develop procedures and process on catching, holding and transporting Blue swimmer crab that would value add to the wild harvest sector’s product – particularly for the live sales market.
The current market is predominantly made of sales of cooked and raw blue swimmer crabs. An approx. price range of blue swimmer crab for 2015 / 2016 was $8.50 < $9.00 per kilo. The live trade in blue swimmer crab in 2016 / 2017 is approx. $20.00 per kilo. A move to selling into the live market would provide a better return for effort and would help in maximizing return on investment in the blue swimmer crab quota fishery.
The “Live Blue Swimmer Crab” trade is in its infancy and it is timely to invest in technologies that will assist in lowering the mortality rates of these animals. Any investment now will accelerate the development of this fishery and ensure the best chance for the restructure of the NSW fishery to achieve its goals.ie viability and efficient use of a quota species.
The industry needs to have an easy to read handling guideline developed and training workshops to improve their access to the market and reduce mortality rates.
Objectives: 1. To produce handling guidelines and conduct a series of industry training workshops to reduce the mortality rate of blue swimmer crabs and thereby increase the volume of live product to market 2. To improve fishermen returns who adopt the guidelines and undertake the training provided Read moreRead less
Climate Driven Shifts In Benthic Habitat Composition As A Potential Demographic Bottleneck For Western Rocklobster: Understanding The Role Of Recruitment Habitats To Better Predict The Under-size Lobster Population For Fishery Sustainability
Funder
Fisheries Research and Development Corporation
Funding Amount
$433,791.00
Summary
The marine heat waves (MHW) of 2010/11, 2011/12 and 2012/13 provide a benchmark with which to investigate changes in habitat composition and potential flow on effects to the fishery.
A 2018 independent review of the science used for stock assessment of the fishery recommended that studies should be undertaken to
a) investigate the impacts of the previous MHW on juvenile recruitment to the fishery and,
b) to better understand the role of habitat composition in recruitme ....The marine heat waves (MHW) of 2010/11, 2011/12 and 2012/13 provide a benchmark with which to investigate changes in habitat composition and potential flow on effects to the fishery.
A 2018 independent review of the science used for stock assessment of the fishery recommended that studies should be undertaken to
a) investigate the impacts of the previous MHW on juvenile recruitment to the fishery and,
b) to better understand the role of habitat composition in recruitment
To understand the impact of habitat change on the fishery, either through warming events or changes in coastal processes, we need an increased understanding of the role of habitat on the survivorship and growth of puerulus, post-puerulus, juvenile and adult life stages of lobster.
In the 40 year time-series of puerulus settlement index a very strong relationship has persisted between puerulus abundance and commercial lobster catches 3 - 4 years larter (de lestang et al., 2010). An undersize catch rate index, based on historical (1985 - present) catch-rate records, evidenced the existence of a strong correlation between puerulus and undersize catch rate (de Lestang pers. com.). However, two-four years after the MHW of 2010/11, this relationship degraded, with the observed catch rate of lobsters being far less than expected at northern locations of the fishery. Although the relationship has now started to return to its historical form, the severity and longevity of its departure are cause for concern and highlight the marked impact future MHW or changes in coastal processes could have on the fishery.
Change in the extent and configurations of coastal habitats is already occurring in response to natural physical forcing (coastal processes) and accelerated by climate change related stressors. It is crucial to have a detailed knowledge of how habitat change affects survival and recruitment key life-stages of the western rock lobster, so these can be taken into consideration for management practices that ensure the sustainability of the fishery. Such information is currently lacking. Objectives: 1. The overall objective is to evaluate the implications of habitat change for the western rock lobster fishery, by determining the relative importance of habitat for the survivorship and growth of critical western rock lobster life stages, to inform the interpretation of existing settlement and recruitment metrics where and when habitat change also occurs. This will be examined via four linked objectives: 2. Synthesise evidence of habitat change: use novel and historical habitat imagery and other remote sensing datasets to determine the spatial extent of habitat loss and recovery, either attributed to 2011/2012 marine heat wave or changes in coastal processes. 3. Investigate fine-scale correlations in anomalies between predicted and observed undersize catch rate index and areas of habitat loss and recovery, either attributed to 2011/2012 marine heat waves or changes in coastal processes. 4. Evaluate evidence of essential benthic habitat for juvenile lobster, by measuring how habitat quality (cover and composition) influences lobster survival. 5. Create a spatial index of essential habitats to inform the interpretation of existing settlement and recruitment metrics. Read moreRead less
Examining The Potential Impacts Of Seismic Surveys On Octopus And Larval Stages Of Southern Rock Lobster
Funder
Fisheries Research and Development Corporation
Funding Amount
$669,770.00
Summary
CGG has NOPSEMA approval for a 3D seismic survey in the Gippsland Basin to commence in early 2020. This survey overlaps the Victorian shelter-pot octopus fishery off Lakes Entrance. This overlap has raised concerns from the fishing industry about the potential impacts to octopus and the fishers. Tank-based experiments simulating seismic exposure have resulted in high levels of damage in several species of octopus, however, it is unclear how experiments conducted in tanks translate into the field ....CGG has NOPSEMA approval for a 3D seismic survey in the Gippsland Basin to commence in early 2020. This survey overlaps the Victorian shelter-pot octopus fishery off Lakes Entrance. This overlap has raised concerns from the fishing industry about the potential impacts to octopus and the fishers. Tank-based experiments simulating seismic exposure have resulted in high levels of damage in several species of octopus, however, it is unclear how experiments conducted in tanks translate into the field. Field-based seismic experiments have rarely been conducted on invertebrates, with no such studies conducted on octopus. However, the benthic and relatively sessile habit of octopus leaves them potentially vulnerable to impacts, as they have limited capacity to avoid the waterborne and ground-borne energy of seismic signals. CCG has agreed to provide funds to fill the knowledge gap surrounding the potential impact of seismic surveying on octopus and to do this in conjunction with a commercial scale seismic survey, with the lack of a full array often a perceived limitation of seismic research. CGG has also agreed to value add to the work around octopus. This opportunity allows for the potential impact of seismic surveying on larval forms to be examined, with some concerns around localised depletion of larvae of commercially and ecologically important species, such as southern rock lobster and commercial scallops. This project will use a field and laboratory experimental approach to provide a thorough assessment of the potential impacts of seismic surveys on octopus pallidus and its catches, along with rock lobster larvae and other important larvae. These approaches may assist fisheries and petroleum regulators to make informed decisions on the timing and manner in which future surveys are performed. Importantly, along with that of CGG, it has the support of the Victorian Fisheries Authority, who have also offered in-kind support, the two octopus fishers in the region, the Lakes Entrance Fishermen’s co-op, the sustainable shark fishing association and Southern Rock Lobster Inc. Objectives: 1. Determine the impact of intense low frequency acoustic signals on adult pale octopus (Octopus pallidus) 2. Determine the impact of intense low frequency acoustic signals on the development of eggs, hatching rates and competency of the resultant hatchlings. 3. Outline threshold distances for potential impacts of seismic surveying 4. Determine the impact of intense low frequency acoustic signals on pale octopus (Octopus pallidus) catch. 5. Determine the impact of intense low frequency seismic signals on the pueruli of southern rock lobsters. 6. Determine the impact of intense low frequency seismic signals on important planktonic larvae, particularly crustaceans and molluscs. Read moreRead less
Fish Jenga: metapopulation management for coastal river fish. This project aims to address the escalating threats to coastal freshwater fish from drought, fire, and other disturbances. The project expects to generate new knowledge on contemporary distributions of NSW coastal freshwater fishes, and will develop models of population dynamics to explore the consequences of alternative water management and disturbance scenarios. The expected outcome of the project is to revolutionise management by r ....Fish Jenga: metapopulation management for coastal river fish. This project aims to address the escalating threats to coastal freshwater fish from drought, fire, and other disturbances. The project expects to generate new knowledge on contemporary distributions of NSW coastal freshwater fishes, and will develop models of population dynamics to explore the consequences of alternative water management and disturbance scenarios. The expected outcome of the project is to revolutionise management by replacing the current practice of managing river basins separately, with a framework that accounts for among-basin linkages that are essential for the long-term persistence of fish populations. Significant benefits include more efficient use of water resources and improved conservation outcomes for native fish.Read moreRead less
Postgraduate Funding - Stock Structure And Connectivity Of Black Bream Including Implications For Management
Funder
Fisheries Research and Development Corporation
Funding Amount
$75,000.00
Summary
Understanding the demographic characteristics, connectivity and stock structure of a fish species is crucial for identifying the appropriate scale and strategy for management.
Black bream is a slow growing and long-lived finfish species with reproduction confined to estuarine habitats. It is distributed in the estuaries and inshore marine waters of southern Australia, from central NSW to central west coast WA, including Tasmania. Throughout its broad distribution, black bream is thoug ....Understanding the demographic characteristics, connectivity and stock structure of a fish species is crucial for identifying the appropriate scale and strategy for management.
Black bream is a slow growing and long-lived finfish species with reproduction confined to estuarine habitats. It is distributed in the estuaries and inshore marine waters of southern Australia, from central NSW to central west coast WA, including Tasmania. Throughout its broad distribution, black bream is thought to be composed of a number of isolated spawning stocks, with limited evidence of movements between estuaries.
In SA, black bream supports important commercial fisheries, and is highly sought-after by recreational anglers. Most of the State-wide commercial catch is taken by the Lakes and Coorong Fishery (LCF) in the Coorong estuary, with smaller contributions taken by the Marine Scalefish Fishery. In 2016, the LCF for black bream, which was historically one of Australia’s most productive black bream fisheries, was classified as ‘overfished’. It is unknown whether this status is reflective of the broader population in SA waters, or if current management arrangements for the Coorong population, which are aimed to promote stock recovery, are adequate in terms of the spatial scale that they apply.
There is a need to understand the demography, connectivity and stock structure of black bream populations across southern Australia (SA, VIC and WA). This information will assist in identifying appropriate scales and strategies for management.
‘People development’ is one of several priorities identified in the FRDC’s RD&E Plan 2015-20. The proposed project will be undertaken by a high-performing student as a PhD project. The student will undertake applied research relevant to FRDC stakeholders (scientists, fishery managers, commercial, recreational and indigenous fishers) in SA, and gain industry experience by being co-supervised by scientists from SARDI. The project will increase fisheries science capacity in SA through training of the next generation of researchers.
Objectives: 1. Define the stock structure of black bream in southern Australia using a multi-methods approach incorporating genetics/genomics and otolith-based techniques 2. Review information on and determine how black bream respond to changing environmental conditions 3. Provide recommendations for fishery managers based on results of stock structure analyses 4. Increase fisheries science capacity in South Australia through training of the next generation of researchers Read moreRead less
Integrating Indigenous Fishing: Extending Adoption Pathways To Policy And Management
Funder
Fisheries Research and Development Corporation
Funding Amount
$140,000.00
Summary
See Opportunities section Objectives: 1. Document the impediments and opportunities for Indigenous engagement and adoption of IRG project outputs across fisheries management jurisdictions in Australia. 2. Identify the priorities for Indigenous fishing in jurisdictions with a focus on the 5 IRG RD&E priorities. 3. Develop a report synthesizing the impediments, opportunities and priorities for Indigenous fishing engagement and adoption to guide future IRG investm .... See Opportunities section Objectives: 1. Document the impediments and opportunities for Indigenous engagement and adoption of IRG project outputs across fisheries management jurisdictions in Australia. 2. Identify the priorities for Indigenous fishing in jurisdictions with a focus on the 5 IRG RD&E priorities. 3. Develop a report synthesizing the impediments, opportunities and priorities for Indigenous fishing engagement and adoption to guide future IRG investment. 4. Develop a template for future IRG projects that will ensure engagement and adoption are maximized. 5. Professional development and capacity building of the Indigenous Principal Investigator and grow cultural awareness in wider participants. Read moreRead less
Integrating Indigenous Fishing: Extending Adoption Pathways To Policy And Management
Funder
Fisheries Research and Development Corporation
Funding Amount
$140,000.00
Summary
See Opportunities section Objectives: 1. Document the impediments and opportunities for Indigenous engagement and adoption of IRG project outputs across fisheries management jurisdictions in Australia. 2. Identify the priorities for Indigenous fishing in jurisdictions with a focus on the 5 IRG RD&E priorities. 3. Develop a report synthesizing the impediments, opportunities and priorities for Indigenous fishing engagement and adoption to guide future IRG investm .... See Opportunities section Objectives: 1. Document the impediments and opportunities for Indigenous engagement and adoption of IRG project outputs across fisheries management jurisdictions in Australia. 2. Identify the priorities for Indigenous fishing in jurisdictions with a focus on the 5 IRG RD&E priorities. 3. Develop a report synthesizing the impediments, opportunities and priorities for Indigenous fishing engagement and adoption to guide future IRG investment. 4. Develop a template for future IRG projects that will ensure engagement and adoption are maximized. 5. Professional development and capacity building of the Indigenous Principal Investigator and grow cultural awareness in wider participants. Read moreRead less