A5067797281- Animal Vocal Communication and Behavior
- Species Distribution and Climate Change
- Rangeland and Wildlife Management
- Fire effects on ecosystems
- Wildlife Ecology and Conservation
- Ecology and Vegetation Dynamics Studies
- Marine animal studies overview
- Animal Behavior and Reproduction
- Avian ecology and behavior
- Remote Sensing and LiDAR Applications
- Animal Ecology and Behavior Studies
- Plant and animal studies
- Marine and coastal plant biology
- Data Analysis with R
- Data Quality and Management
- Acoustic Wave Phenomena Research
- Noise Effects and Management
- Physiological and biochemical adaptations
- Isotope Analysis in Ecology
- Environmental DNA in Biodiversity Studies
- Amphibian and Reptile Biology
- Vehicle Noise and Vibration Control
- Identification and Quantification in Food
- Animal Behavior and Welfare Studies
- Recommender Systems and Techniques
Cornell University
2021-2025
Center for Environmental Health
2021-2025
Cornell Lab of Ornithology
2021-2023
University of Wisconsin–Madison
2018-2022
University of Maine
2015-2020
University of Aberdeen
2017-2018
Variation in avian diversity space and time is commonly used as a metric to assess environmental changes. Conventionally, such data were collected by expert observers, but passively acoustic rapidly emerging an alternative survey technique. However, efficiently extracting accurate species richness from large audio datasets has proven challenging. Recent advances deep artificial neural networks (DNNs) have transformed the field of machine learning, frequently outperforming traditional signal...
Abstract Passive acoustic monitoring (PAM) has emerged as a transformative tool for applied ecology, conservation and biodiversity monitoring, but its potential contribution to fundamental ecology is less often discussed, PAM studies tend be descriptive, rather than mechanistic. Here, we chart the most promising directions ecologists wishing use suite of currently available methods address long‐standing questions in explore new avenues research. In both terrestrial aquatic habitats, provides...
The BirdNET App, a free bird sound identification app for Android and iOS that includes over 3,000 species, reduces barriers to citizen science while generating tens of millions observations globally can be used replicate known patterns in avian ecology.
Abstract Ecological disturbances are becoming more extensive and intensive globally, a trend exemplified by ‘megafires’ industrial deforestation, which cause widespread losses of forest cover. Yet the hypothesis that contemporary environmental affecting biodiversity has been difficult to test directly. The novel combination landscape‐scale passive acoustic monitoring, new machine learning algorithm, BirdNET improved Bayesian model‐fitting engines enables cohesive, community‐level...
Abstract Bioacoustic assessments of species richness are rapidly becoming attainable, but uncertainty regarding the optimal acoustic survey design remains. Selecting duration recording and number units critical decisions, we used both simulated empirical data to quantify trade‐offs those choices present. We evaluated performance 30 hypothetical designs (e.g. continuous recording, every other 5 min, etc.). Simulated bird species' ( n ≤ 60) abundance across study area, probability daily...
Passive acoustic monitoring has proven effective for broad-scale population surveys of acoustically active species, making it a valuable tool conserving threatened species. However, successful automated classification anuran vocalisations in large audio datasets been limited. We deployed five autonomous recording units at three known breeding areas the Yosemite toad (Anaxyrus canorus), which is and relatively uncommon, sympatric Pacific chorus frog (Pseudacris regilla), widespread more...
Abstract Fire shapes biodiversity in many forested ecosystems, but historical management practices and anthropogenic climate change have led to larger, more severe fires that threaten animal species where such disturbances do not occur naturally. As predators, owls can play important ecological roles biological communities, how changing fire regimes affect individual assemblages is largely unknown. Here, we examined the impact of severity, history, configuration over past 35 years on an...
ABSTRACT Aim Occupancy models are ubiquitous in ecological and biogeographical applications, but they rely upon an assumption of site closure that is sometimes applied across many weeks or even months. Nomadic species challenge this approach because likely to exhibit within‐season movements violate the closure. Assuming for nomadic a full season results depressed estimates detection probability inflated occupancy can obscure important habitat associations. However, selecting appropriate...
Recent bioacoustic advances have facilitated large-scale population monitoring for acoustically active species. Animal sounds, however, can of information that is underutilized in typical approaches to passive acoustic (PAM) treat sounds simply as detections. We developed 3 methods extracting additional ecological detail from data are applicable a broad range conducted landscape-scale surveys declining owl species and an invasive congeneric competitor California. then used sex-specific...
Abstract Population declines and range contractions due to habitat loss are pervasive among nonhuman primates, with 60% of species threatened extinction. However, the extensive vocal activity displayed by many primates makes them excellent candidates for passive acoustic surveys. Passive survey data is increasingly being used support occupancy models, which have proven be an efficient means estimating both population trends distributions. surveys can conducted relatively quickly at broad...
Fire-adapted forests in western North America are experiencing rapid changes to fire regimes that outside the range of historic norms. Some habitat-specialist species have been negatively impacted by increases large, high-severity fire, yet, responses many especially at longer time scales, remain ambiguous. We studied response a widely distributed species, mountain quail (Oreortyx pictus), wildfire across Sierra Nevada California, because its habitat selection patterns provided an...
Monitoring population size at ecosystem scales is difficult for most species of conservation concern. While assessing site occupancy broad has proven feasible, rigorous tracking changes in over time not – even though it can provide a stronger basis status and conservation-decision making. Therefore, we demonstrate how relatively low-intensity, ecosystem-scale passive acoustic monitoring (PAM) be linked to local-density estimate the native California spotted owls (Strix occidentalis...
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Changing fire regimes in western North America have raised the possibility of widespread loss forest cover, making restoration a major priority. In one such ecosystem, Sierra Nevada California, implications management policy been evaluated primarily via their potential effects on California Spotted Owl (<em>Strix occidentalis occidentalis</em>). Yet owl's cryptic life history, large home range, and declining population all make it difficult to study. The Hermit Warbler (<em>Setophaga...
Occupancy modelling is an increasingly common framework for analysing acoustic data to study the variation in populations through space and time, but different survey designs endow locations with varying degrees of biological meaning. Recording units may be preferentially deployed areas known important a species, which implies ‘area occupancy’ conception species range, or recording randomly without knowledge focal space‐use (e.g. grid), ‘extent occurrence’ range. Preferential sampling...
Abstract Preserving biodiversity is a central goal of conservation, but, in practice, monitoring often involves assessing population trends for one or handful species that are presumed proxies biodiversity. Despite the popularity surrogate strategies, links between and rarely tested, especially across broad spatial scales at which they applied. We quantitatively evaluated prominent strategy 25,000 km 2 California's Sierra Nevada, an ecosystem undergoing substantial forest loss due to...
The role of cannibalism in crayfish populations is not well understood, despite being a potentially key density-dependent process underpinning population dynamics. We studied the incidence an introduced signal Pacifastacus leniusculus Scottish lowland river September 2014. Animals were sampled using six different sampling techniques simultaneously, revealing variable densities and size distributions across site. Cannibalism prevalence was estimated by analysing gut contents >20 mm CL for...
Abstract Managing complex social-ecological systems in an era of rapid climate change and changing human pressures represents a major challenge sustainability science. The Sierra Nevada, USA is large system facing tipping point that could result ecosystem changes. A century fire suppression have set the stage for mega-disturbances threaten biodiversity, life values, services, forest persistence. Stakeholders face multidimensional often contentious trade-offs with costs benefits can be...
Abstract Pesticide use is pervasive and the exposure of non-target wildlife has been well documented over past half-century. Among pesticides, anticoagulant rodenticides (AR) have emerged as a particularly important threat in forests western United States, with mortality reported for several species conservation concern. To further quantify this threat, we collected specimens Barred Owls (Strix varia) Owl x Spotted hybrids from Klamath Cascade Mountains Sierra Nevada California, USA to...