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Evaluating the behavioural consequences of external pop‐off biologging packages on two freshwater fishesNARA Subscribed
Quantifying the behaviour of animals in the wild can provide important information on their ecology and welfare. External biologgers that ‘pop‐off’ to enable tag retrieval have been widely used in marine systems; however, they have only recently been applied to freshwater fishes. As a result, questions remain about the impact that external biologgers have on the behaviour of freshwater fishes. Here, two species of freshwater f...
Local Angler Knowledge Reveals Declines in Fishing Quality for Black Bass in Lakes of Eastern OntarioNARA Subscribed
Local ecological knowledge can be useful to assess data‐limited fisheries such as the Ontario Black Bass ( Micropterus spp.) recreational fishery. We surveyed local anglers using the Life History Calendar approach to determine if there were perceived changes in fishing quality for Black Bass in eastern Ontario across different time periods. For both species (Largemouth Bass and Smallmouth Bass), respondents noted declines in n...
Role of funders in embedding tests in conservation practiceNARA Subscribed
Effective conservation practice requires decisions based on reliable and relevant evidence, but significant gaps in the evidence base exist. Incorporating well‐designed tests of the effectiveness of interventions for biodiversity in conservation projects is one of the best ways to scale up the rate of evidence generation. Funders of conservation projects are uniquely positioned to support and incentivize such tests as part of...
Non‐lethal biopsy is a valuable tool for gaining insight into the physiological status of fish in the wild and for predicting their subsequent behaviour and survival. However, linking the insights from biopsy to post‐release behaviour relies on the assumption that the biopsy itself has no meaningful impact on post‐release behaviour or survival (e.g. in animals tagged with electronic devices). This assumption is likely to be qu...
Prevalence and Implications of “Must‐Kill” Angling Regulations for the Management of Invasive FishesNARA Subscribed
Freshwater biodiversity is increasingly threatened by invasive species, which can disrupt native fish populations and the fisheries they support. Must‐kill regulations, which prohibit the live release of invasive fish caught by recreational anglers, are a management strategy that can be implemented to limit the negative effects of invasive fish populations. Our review of angling regulations around the globe revealed that must‐...
Connectivity is a multifaceted concept that has important implications for the management and conservation of marine and freshwater fishes. We developed a conceptual framework that encompasses multiple, interrelated categories of connectedness, including landscape (e.g., structural, functional) connectivity and ecological (e.g., trophic, genetic, demographic) connectivity, that together shape the flow of organisms, energy and...
Freshwater ecosystems around the world are increasingly impacted by climate change, yet there remains a lack of long‐term empirical data on how these changes are manifesting. In the Laurentian Great Lakes, a globally significant freshwater system, fish and their habitats are expected to be affected by warming water temperatures and increasing risks of species invasions. Despite these projections, relatively few studies have do...
New values for accumulation of unerupted magma inside Mt Etna volcano, determined from 42 years of ground deformation dataNARA Subscribed
Volcanoes grow and change shape by eruption, magma intrusion and by spreading outwards under their own weight. To understand the workings of a volcano, the balance of these processes must be quantified, requiring decades of observation. Here, we measure displacement of 72 survey points on and around Mt Etna to millimetre accuracy for periods of up to 42 years. We find that Etna is increasing in volume by 2.68 million cubic met...
Validation of a new acoustic telemetry transmitter for the study of predation events in small fishesNARA Subscribed
Acoustic telemetry has emerged as an important tool for studying the movement and behavior of aquatic animals. Predation‐sensing acoustic transmitters combine the functions of typical acoustic transmitters with the added ability to identify the predation of tagged animals. The objective of this paper was to assess the performance of a newly miniaturized acid‐based predation‐sensing acoustic transmitter (Innovasea V3D; 0.33 g i...
Application of telemetry‐based fish habitat models to predict spatial habitat availability and inform ecological restorationNARA Subscribed
Conservation decisions surrounding which fish habitats managers choose to protect and restore are informed by fish habitat models. As acoustic telemetry has allowed for improvements in our ability to directly measure fish positions year‐round, so too have there been opportunities to refine and apply fish habitat models. In an area with considerable anthropogenic disturbance, Hamilton Harbour in the Laurentian Great Lakes, we u...