We present a national social and economic benchmark for the Australian Marine Parks (AMPs), focussing on four key groups: the general public, recreational fishers, non-extractive recreational users, and charter operators. Establishing this benchmark involved conducting four integrated surveys nationally reaching approximately 4,000 respondents. The AMP benchmarks established here are amongst the most comprehensive globally in terms of the spatial extent and stakeholder groups considered. Overall, the surveys highlight the substantial values associated with the AMPs, and generally positive perceptions and attitudes towards the parks. The surveys also highlight potential areas for survey improvement, and data was collected to help address these (e.g. preferred modes of contact). The information is intended to inform management of the AMPs in ways that align with the preferences of stakeholders and the broader community. 

Marine reserves are a key tool for the conservation of marine biodiversity, yet only ~2.5% of the world's oceans are protected. The integration of marine reserves into connected networks representing all habitats has been encouraged by international agreements, yet the benefits of this design has not been tested empirically. Australia has one of the largest systems of marine reserves, providing a rare opportunity to assess how connectivity influences conservation success. An Australia-wide dataset was collected using baited remote underwater video systems deployed across a depth range from 0 to 100 m to assess the effectiveness of marine reserves for protecting teleosts subject to commercial and recreational fishing. A meta-analytical comparison of 73 fished species within 91 marine reserves found that, on average, marine reserves had 28% greater abundance and 53% greater biomass of fished species compared to adjacent areas open to fishing. However, benefits of protection were not observed across all reserves (heterogeneity), so full subsets generalized additive modelling was used to consider factors that influence marine reserve effectiveness, including distance-based and ecological metrics of connectivity among reserves. Our results suggest that increased connectivity and depth improve the aforementioned marine reserve benefits and that these factors should be considered to optimize such benefits over time. We provide important guidance on factors to consider when implementing marine reserves for the purpose of increasing the abundance and size of fished species, given the expected increase in coverage globally. We show that marine reserves that are highly protected (no-take) and designed to optimize connectivity, size and depth range can provide an effective conservation strategy for fished species in temperate and tropical waters within an overarching marine biodiversity conservation framework.