Evaluation of a smart-phone application to collect recreational fishing catch estimates, including an assessment against an independent probability based survey, using South Australia as a case study
There is need to collect accurate and robust information on recreational fishing levels to inform fisheries management. Recreational fishing estimates are critical to ensure sustainable harvest of community owned fisheries resources. In South Australia, established Fishery Management Plans are in place and recreational catch must be monitored to ensure that the sector is operating within its allocated shares of the resource. Recent changes to the availability of traditional sampling frames and shifts in the way the people communicate mean that it is becoming increasingly cost-prohibitive to undertake surveys using the established methodology. There is a need to re-evaluate how recreational fishing catch and effort is assessed and to develop revised survey methodologies using the latest survey tools and techniques.
Smartphone applications may provide a cost-effective method to collect information on recreational catch. However, as most apps are self-selected, sampling is non-probability based and it is not possible to calculate confidence intervals or margins of error. There is a need to compare app-based data with traditional phone-diary surveys to compare estimates and evaluate the accuracy of the results measured relative to independent population benchmarks. The outputs from this project will provide valuable information to other jurisdictions who have existing apps or are looking to implement an app.- based survey
Final report
The review of existing technologies and knowledge assets highlighted some of the challenges faced by probability-based surveys due to changing communication practices and sampling limitations. Although smartphone apps are acknowledged for their potential to engage users and collect recreational fishing data, they have limitations such as participant non-response and possible unknown biases that may affect reported catch rates and data quality. It was acknowledged that recruiting participants without a license frame is challenging, requires substantial communication investment, and that private companies may be able to advance app technology for broader user appeal. While app-based data collection is likely to complement probability-based methods, successful implementation requires validation, bias control, user-friendly design, transparency, and measures to ensure adequate recruitment and retention. Key to this is addressing concerns around privacy, security, and representativeness to encourage app adoption, which has the potential to promote the collection of near real-time data to inform fisheries assessment and management.
Determination of the impacts of direct harvest of coral species in northern Australia
Australia’s aquarium fisheries are high value (GVP >$20 million), small scale fisheries that rely on exporting CITES listed corals for profitability and viability. The Australian government requires fisheries collecting and exporting these species to demonstrate that their harvest is sustainable under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) in order to meet Australia's obligations under CITES.
In the absence of empirical evidence, precautionary harvest limits are set on all coral species, and monitored and reported by NT Fisheries to the Commonwealth Department of Environment and Energy (DoEE), to fulfil EPBC requirements. Increased global demand for valuable coral species presents an opportunity for licenced fishers to develop new and existing international markets. However, in order to increase harvest limits, evidence is required to reinforce that the harvest and subsequent export will not have a detrimental effect on the population status of the species (CITES non-detriment finding). Any supporting non-detriment finding must be corroborated with new empirical evidence on the impacts of harvesting corals.
The FRDC project ‘Establishing baselines and assessing vulnerability of commercially harvested corals across northern Australia’ (FRDC 2014-029) (currently underway) attempts to address some of these issues including taxonomy, abundance and distribution of key coral species but fails to address the long-standing concern of the impacts of coral harvesting. Understanding and quantifying the impacts of harvesting coral has the potential for providing the greatest benefit to industry. The specific need is to investigate the extent of recovery (or not) of key species of Scleractinian (hard) corals harvested at the level of individual colonies over an appropriate temporal scale.
Members of the A12 Aquarium display fishery are supportive of this project and will be actively involved in assisting with data collection. This project directly addresses the NT Research Advisory Committee priority ‘Impact of harvesting key species of Scleractinian (hard) corals in the Northern Territory’.