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  1. Article

    Open Access

    Long-term trends of local bird populations based on monitoring schemes: are they suitable for justifying management measures?

    Local biodiversity monitoring is important to assess the effects of global change, but also to evaluate the performance of landscape and wildlife protection, since large-scale assessments may buffer local fluc...

    Antonio J. Hernández-Navarro, Francisco Robledano in Journal of Ornithology (2024)

  2. Article

    Open Access

    Movement-assisted localization from acoustic telemetry data

    Acoustic telemetry technologies are being increasingly deployed to study a variety of aquatic taxa including fishes, reptiles, and marine mammals. Large cooperative telemetry networks produce vast quantities o...

    Nathan J. Hostetter, J. Andrew Royle in Movement Ecology (2020)

  3. Article

    Open Access

    Using bear rub data and spatial capture-recapture models to estimate trend in a brown bear population

    Trends in population abundance can be challenging to quantify during range expansion and contraction, when there is spatial variation in trend, or the conservation area is large. We used genetic detection data...

    Katherine C. Kendall, Tabitha A. Graves, J. Andrew Royle in Scientific Reports (2019)

  4. Article

    Open Access

    Author Correction: Large-scale variation in density of an aquatic ecosystem indicator species

    An amendment to this paper has been published and can be accessed via a link at the top of the paper.

    Chris Sutherland, Angela K. Fuller, J. Andrew Royle, Matthew P. Hare in Scientific Reports (2019)

  5. Article

    Open Access

    Modeling spatially and temporally complex range dynamics when detection is imperfect

    Species distributions are determined by the interaction of multiple biotic and abiotic factors, which produces complex spatial and temporal patterns of occurrence. As habitats and climate change due to anthrop...

    Clark S. Rushing, J. Andrew Royle, David J. Ziolkowski in Scientific Reports (2019)

  6. Article

    Open Access

    Large-scale variation in density of an aquatic ecosystem indicator species

    Monitoring indicator species is a pragmatic approach to natural resource assessments, especially when the link between the indicator species and ecosystem state is well justified. However, conducting ecosystem...

    Chris Sutherland, Angela K. Fuller, J. Andrew Royle, Matthew P. Hare in Scientific Reports (2018)

  7. No Access

    Article

    Spatially explicit dynamic N-mixture models

    Knowledge of demographic parameters such as survival, reproduction, emigration, and immigration is essential to understand metapopulation dynamics. Traditionally the estimation of these demographic parameters ...

    Qing Zhao, J. Andrew Royle, G. Scott Boomer in Population Ecology (2017)

  8. No Access

    Chapter

    Concepts: Assessing Tiger Population Dynamics Using Capture–Recapture Sampling

    Capture-recapture can be viewed as an animal survey method in which the count statistic is the total number of animals caught, and the associated detection probability is the probability of capture.

    J. Andrew Royle, Arjun M. Gopalaswamy in Methods For Monitoring Tiger And Prey Popu… (2017)

  9. No Access

    Chapter

    Concepts and Practices: Estimating Abundance of Prey Species Using Hierarchical Model-Based Approaches

    Tigers predominantly prey on large ungulate species, such as sambar (Cervus unicolor), red deer (Cervus elaphus), gaur (Bos gaurus), banteng (Bos javanicus), chital (Axis axis), muntjac (Muntiacus muntjak), wild ...

    Robert M. Dorazio, N. Samba Kumar in Methods For Monitoring Tiger And Prey Popu… (2017)

  10. Article

    Open Access

    Integrating occurrence and detectability patterns based on interview data: a case study for threatened mammals in Equatorial Guinea

    Occurrence models that account for imperfect detection of species are increasingly used for estimating geographical range, for determining species-landscape relations and to prioritize conservation actions wor...

    Chele Martínez-Martí, María V. Jiménez-Franco, J. Andrew Royle in Scientific Reports (2016)

  11. Article

    Open Access

    Study of biological communities subject to imperfect detection: bias and precision of community N-mixture abundance models in small-sample situations

    Community N-mixture abundance models for replicated counts provide a powerful and novel framework for drawing inferences related to species abundance within communities subject to imperfect detection. To assess t...

    Yuichi Yamaura, Marc Kéry, J. Andrew Royle in Ecological Research (2016)

  12. No Access

    Article

    Spatial capture–recapture models allowing Markovian transience or dispersal

    Spatial capture–recapture (SCR) models are a relatively recent development in quantitative ecology, and they are becoming widely used to model density in studies of animal populations using camera traps, DNA s...

    J. Andrew Royle, Angela K. Fuller, Chris Sutherland in Population Ecology (2016)

  13. No Access

    Article

    Rachel S. McCrea and Byron J. T. Morgan, Analysis of Capture–Recapture Data

    J. Andrew Royle in Journal of Agricultural, Biological, and Environmental Statistics (2015)

  14. No Access

    Article

    Estimating landscape resistance to dispersal

    Dispersal is an inherently spatial process that can be affected by habitat conditions in sites encountered by dispersers. Understanding landscape resistance to dispersal is important in connectivity studies an...

    Tabitha Graves, Richard B. Chandler, J. Andrew Royle, Paul Beier in Landscape Ecology (2014)

  15. No Access

    Article

    Inference for finite-sample trajectories in dynamic multi-state site-occupancy models using hidden Markov model smoothing

    Ecologists and wildlife biologists increasingly use latent variable models to study patterns of species occurrence when detection is imperfect. These models have recently been generalized to accommodate both a...

    Ian J. Fiske, J. Andrew Royle, Kevin Gross in Environmental and Ecological Statistics (2014)

  16. No Access

    Article

    Biodiversity of man-made open habitats in an underused country: a class of multispecies abundance models for count data

    Since the 1960s, Japan has become highly dependent on foreign countries for natural resources, and the amount of managed lands (e.g. coppice, grassland, and agricultural field) has declined. Due to infrequent ...

    Yuichi Yamaura, J. Andrew Royle, Naoaki Shimada in Biodiversity and Conservation (2012)

  17. No Access

    Article

    Spatial modeling of survival and residency and application to the Monitoring Avian Productivity and Survivorship program

    Broad-scale bird-ringing programs are a core component of national and international avian monitoring and research efforts. Despite rich spatial structure in data from these programs, little attention has been...

    James F. Saracco, J. Andrew Royle, David F. DeSante, Beth Gardner in Journal of Ornithology (2012)

  18. No Access

    Article

    Parameter-expanded data augmentation for Bayesian analysis of capture–recapture models

    Data augmentation (DA) is a flexible tool for analyzing closed and open population models of capture–recapture data, especially models which include sources of hetereogeneity among individuals. The essential c...

    J. Andrew Royle, Robert M. Dorazio in Journal of Ornithology (2012)

  19. No Access

    Article

    Bayesian analysis of multi-state data with individual covariates for estimating genetic effects on demography

    Inbreeding depression is frequently a concern of managers interested in restoring endangered species. Decisions to reduce the potential for inbreeding depression by balancing genotypic contributions to reintro...

    Sarah J. Converse, J. Andrew Royle, Richard P. Urbanek in Journal of Ornithology (2012)

  20. No Access

    Chapter

    Hierarchical Spatial Capture–Recapture Models for Estimating Density from Trap** Arrays

    Much of the theory and methodology underlying inference about population size is concerned with populations that are well-defined in the sense that one can randomly sample individuals associated with some loca...

    J. Andrew Royle in Camera Traps in Animal Ecology (2011)

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