The use of on‐animal acoustical recording devices for studying animal behavior

Lynch, Emma; Angeloni, Lisa M.; Fristrup, Kurt M.; Joyce, Damon; Wittemyer, George

doi:10.1002/ece3.608

Cited by 39 publications

(50 citation statements)

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“…Mastication could not be measured in a comparable way to the behaviours recorded in this study as the jaws could not always be seen, however we note that, where observable, mastication without vigilance appeared to be the dominant “other” behaviour. Herbivores have been observed to temporally and spatially partition their ruminating behaviour from their foraging behaviour (Lynch et al 2013; Nellemann 1998). Mesopredators like foxes may also adjust their digestive behaviour in response to predation risk.…”

Section: Discussionmentioning

confidence: 99%

“…Foxes may have chewed more quickly, chewed less or even swallowed pieces whole under wolf urine treatment, digesting away from risky patches instead of investing time aiding the digestive process by masticating while at patches. Mastication may also be reduced in risky locations because it can inhibit auditory vigilance (Lynch et al 2013, 2015). …”

Section: Discussionmentioning

confidence: 99%

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Fear, foraging and olfaction: how mesopredators avoid costly interactions with apex predators

et al. 2018

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Where direct killing is rare and niche overlap low, sympatric carnivores may appear to coexist without conflict. Interference interactions, harassment and injury from larger carnivores may still pose a risk to smaller mesopredators. Foraging theory suggests that animals should adjust their behaviour accordingly to optimise foraging efficiency and overall fitness, trading off harvest rate with costs to fitness. The foraging behaviour of red foxes, Vulpes vulpes, was studied with automated cameras and a repeated measures giving-up density (GUD) experiment where olfactory risk cues were manipulated. In Plitvice Lakes National Park, Croatia, red foxes increased GUDs by 34% and quitting harvest rates by 29% in response to wolf urine. In addition to leaving more food behind, foxes also responded to wolf urine by spending less time visiting food patches each day and altering their behaviour in order to compensate for the increased risk when foraging from patches. Thus, red foxes utilised olfaction to assess risk and experienced foraging costs due to the presence of a cue from gray wolves, Canis lupus. This study identifies behavioural mechanisms which may enable competing predators to coexist, and highlights the potential for additional ecosystem service pathways arising from the behaviour of large carnivores. Given the vulnerability of large carnivores to anthropogenic disturbance, a growing human population and intensifying resource consumption, it becomes increasingly important to understand ecological processes so that land can be managed appropriately.Electronic supplementary materialThe online version of this article (10.1007/s00442-018-4133-3) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Fear, foraging and olfaction: how mesopredators avoid costly interactions with apex predators

et al. 2018

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“…Acoustic tags have the benefit that they can record both intentional and unintentional vocalizations. Feeding noise is an example of an unintentional vocalization and has been used to quantify daily time budgeting of mule deer (Odocoileus hemionus; Lynch et al 2013). Acoustic tags could prove useful for a wider variety of avian studies assuming the size of the technology decreases in coming years.…”

Section: Current and Future Applicationsmentioning

confidence: 99%

Autonomous recording units in avian ecological research: current use and future applications

Shonfield¹,

Bayne²

2017

ACE

246

241

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ABSTRACT. Acoustic surveys are a widely used sampling tool in ecological research and monitoring. They are used to monitor populations and ecosystems and to study various aspects of animal behavior. Autonomous recording units (ARUs) can record sound in most environments and are increasingly used by researchers to conduct acoustic surveys for birds. In this review, we summarize the use of ARUs in avian ecological research and synthesize current knowledge of the benefits and drawbacks of this technology. ARUs enable researchers to do more repeat visits with less time spent in the field, with the added benefits of a permanent record of the data collected and reduced observer bias. They are useful in remote locations and for targeting rare species. ARUs are mostly comparable to human observers in terms of species richness, but in some cases, they detect fewer species and at shorter distances. Drawbacks of ARUs include the cost of equipment, storage of recordings, loss of data if units fail, and potential sampling trade-offs in spatial vs. temporal coverage. ARUs generate large data sets of audio recordings, but advances in automated species recognition and acoustic processing techniques are contributing to make the processing time manageable. Future applications of ARUs include biodiversity monitoring and studying habitat use, animal movement, and various behavioral ecology questions based on vocalization activity. ARUs have the potential to make significant advances in avian ecological research and to be used in more innovative ways than simply as a substitute for a human observer in the field. Unités d'enregistrement autonomes en écologie aviaire : utilisations actuelles et futuresRÉSUMÉ. Les relevés acoustiques sont largement employés comme outil d'échantillonnage pour la recherche et les suivis écologiques. Ils sont utilisés pour suivre les populations et les écosystèmes et étudier le comportement animal sous divers angles. Les unités d'enregistrement autonomes (ARU, pour autonomus recording units) peuvent enregistrer les sons dans la plupart des environnements et sont utilisés de plus en plus souvent par les chercheurs pour effectuer des relevés acoustiques d'oiseaux. Dans la présente revue, nous résumons l'utilisation d'ARU en écologie aviaire et synthétisons les avantages et désavantages connus de cette technologie. Les ARU permettent aux chercheurs de faire plus de visites répétées tout en passant moins de temps sur le terrain, avec l'avantage d'avoir un enregistrement permanent des données récoltées et de réduire le biais associé à l'observateur. Ils sont utiles en milieu éloigné et dans les cas où on cible des espèces rares. Les ARU sont comparables aux observateurs humains pour ce qui est de la richesse spécifique, mais dans certains cas, ils détectent moins d'espèces et à des distances plus courtes. Les désavantages des ARU comprennent le coût de l'équipement, la sauvegarde des enregistrements, la perte de données en cas de défaillance des unités, et le compromis possible à devoir faire sur le plan de la...

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“…Successful implementation of such devices includes monitoring cattle-foraging behavior (Clapham et al 2011), characterizing activity budgets of wildlife (Lynch et al 2013), investigation of species communication (Payne et al 2003), or identifying the presence of marine mammals (Klinck et al 2012). Real-time directional tracking of sounds is also possible (Bergamo et al 2004) and gunshot detection (e.g., ''ShotSpotter,'' available online)…”

Section: Acoustic Datamentioning

confidence: 99%

Novel opportunities for wildlife conservation and research with real‐time monitoring

Wall

Wittemyer

Klinkenberg

et al. 2014

Ecological Applications

Self Cite

106

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Abstract. The expansion of global communication networks and advances in animaltracking technology make possible the real-time telemetry of positional data as recorded by animal-attached tracking units. When combined with continuous, algorithm-based analytical capability, unique opportunities emerge for applied ecological monitoring and wildlife conservation. We present here four broad approaches for algorithmic wildlife monitoring in real time-proximity, geofencing, movement rate, and immobility-designed to examine aspects of wildlife spatial activity and behavior not possible with conventional tracking systems. Application of these four routines to the real-time monitoring of 94 African elephants was made. We also provide details of our cloud-based monitoring system including infrastructure, data collection, and customized software for continuous tracking data analysis. We also highlight future directions of real-time collection and analysis of biological, physiological, and environmental information from wildlife to encourage further development of needed algorithms and monitoring technology. Real-time processing of remotely collected, animal biospatial data promises to open novel directions in ecological research, applied species monitoring, conservation programs, and public outreach and education.

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The use of on‐animal acoustical recording devices for studying animal behavior

Cited by 39 publications

References 23 publications

Fear, foraging and olfaction: how mesopredators avoid costly interactions with apex predators

Fear, foraging and olfaction: how mesopredators avoid costly interactions with apex predators

Autonomous recording units in avian ecological research: current use and future applications

Novel opportunities for wildlife conservation and research with real‐time monitoring

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