Reviewing solutions to reduce unwanted fisher interactions with elasmobranchs
This project will build on the 2022 FRDC National Workshop on Shark Depredation (project number 2021-038) and have four complementary phases through: (1) a detailed review of the peer-reviewed and grey literature to identify and assess the efficacy of the most recently developed mitigation methods, (2) a survey of the scientific community and fishing-industry stakeholders (i.e. fishers, industry representatives, managers) to identify lesser known methods developed and/or used by fishers, (3) a series of workshops to identify the most promising approaches for mitigating depredation and plan the design of field trials, with a stop/go point occurring at the end of this phase based on whether suitable methods are found, and if so, (4) a robust experimental trial of the most promising mitigation method(s) to assess their effectiveness at reducing shark depredation. Phase 4 would be dependent on whether suitable methods can be identified through Phases 1–3. Stakeholder involvement and outreach will be a critical part of this project across all phases. The findings of this project will be widely disseminated via presentations to fishing clubs and industry members, written articles in the FRDC and fishing magazines, a final project report and subsequent peer reviewed publications. All off these outreach activities will be conducted in collaboration with the FRDC Extension Officer network. This will ensure broad adoption of the identified depredation mitigation measure(s).
Sea Change: co-developing pathways to mitigate and adapt to a changing climate for fisheries and aquaculture in Australia
There is a need to increase effective engagement between fishing and aquaculture stakeholders and climate science and scientists in an ongoing strategic way, and not ‘just’ for single-project outcomes.
Improved engagement will help increase understanding of the likely implications of a changing climate in relevant contexts, and lay foundations for a shared exploration of available options for reducing risk exposure. We have worked with stakeholders and the FRDC Extension Officer Network to design a strategy that will engage fishing and aquaculture stakeholders on existing knowledge regarding risks and opportunities associated with a changing climate, to enable resource managers and researchers to better understand the ways in which many sectors are already adapting autonomously and to identify the barriers to further adaptation, and to co-design solutions that are relevant at local- and industry-levels to help build climate-ready communities and to stimulate economic resilience.
In many cases (but not all), extensive information regarding marine climate change - including key risks to fisheries and aquaculture producers (at a high level) - is already available, along with information on how to develop adaptation plans. However, despite this, progress and uptake within most sectors in terms of planned adaptation responses has been very slow – although many individual operators are already making ‘autonomous’ changes to their day-to-day operations in response to climate change drivers. If these changes are being made without access to best available knowledge, then it is very likely that substantial portions of these responses are maladaptive in the longer term, or may be countervailing to planned government adaptations (see Pecl et al 2019, Ambio, https://link.springer.com/article/10.1007/s13280-019-01186-x). This is a pattern evident within many different industries around Australia and across the rest of the world. ‘What’ needs to happen has thus been outlined in general terms in many cases, but such information is not co-developed or provided in consultation with end-users in ways that resonate or are useful to them. This project will address this need for relevance and usefulness.
The project aims to develop reflexive, ongoing, and two-way knowledge exchange between industry representatives, operators and manager, and the marine climate change impacts and adaptation research sector, so that solutions are co-designed, usable, and adoptable.
Research to support the development of a Tasmanian Sardine Fishery
Developing a cost-effective and novel fisheries-independent monitoring program to inform scalefish fisheries management
Target species of Tasmanian scalefish fisheries (TSF) remain difficult to assess and manage due to the wide range of species (> 20 species) and variety of both commercial and recreational fisheries methods. TSF are currently assessed using commercial catch and effort data as well as age and length information. However, some key TSF species landings are increasingly greater in the recreational sector, with a comparatively low commercial catch. Therefore, due to the absence of regular and robust CPUE data, innovative fishery independent data collection programs are required to routinely monitor TSF species and provide adequate data for stock assessment models. This project will review and collate data from previous studies to design and test strategic and cost-effective novel fishery-independent survey methods that collect population dynamics data for a suite of key scalefish fisheries species, across both environmental and fishing intensity gradients in Tasmania. Outcomes will improve stock assessment methods by providing new and additional data for data-poor and undefined species, and, if proven cost-effective, establish an ongoing, long-term fishery-independent monitoring program to enhance the sustainability of TSF. We will collate historical data on Tasmanian scalefish abundance, biomass, distribution, and length-frequencies collected in previous research projects and collect and compare new data to fill current knowledge gaps about localised population depletion and population dynamics across different habitats. Many of the popular commercial and recreational scalefish fisheries are increasingly of concern, with southern sand flathead, southern garfish, and bastard and striped trumpeters all assessed as depleted in the most recent (2020/21) Tasmanian stock assessment (Fraser et al 2022), while others (such as flounder - Pleuronectidae family, longsnout boarfish, and barracouta) were assessed as undefined due to lack of available data for these species. Our results will better inform data-poor stock assessment approaches and will have implications for fisheries managers making critical management decisions for depleted, depleting, and undefined Tasmanian scalefish fisheries species.