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An empirical demonstration of the effect of study design on density estimations

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  • 1.

    Cardillo, M. et al. Human population density and extinction risk in the world’s carnivores. PLoS Biol. https://doi.org/10.1371/journal.pbio.0020197 (2004).

    Article 
    PubMed 
    PubMed Central 

    Google Scholar 

  • 2.

    Jackson, R. & Hunter, D. O. Snow leopard Survey and conservation handbook (First edition). In Report: 1–120. International Snow leopard Trust 1–120 (1995). 

    Google Scholar 

  • 3.

    Karanth, K. U. & Nichols, J. D. Estimation of tiger densities in India using photographic captures and recaptures. Ecology 79, 2852–2862 (1998).

    Article 

    Google Scholar 

  • 4.

    McCarthy, K. P. et al. Assessing estimators of snow leopard abundance. J. Wildl. Manage. 72, 1826–1833 (2008).

    Article 

    Google Scholar 

  • 5.

    Sharma, K. et al. Vigorous dynamics underlie a stable population of the endangered snow leopard Panthera uncia in Tost Mountains, South Gobi, Mongolia. PLoS ONE 9, e101319 (2014).

    ADS 
    PubMed 
    PubMed Central 
    Article 

    Google Scholar 

  • 6.

    Ale, S. B. & Mishra, C. The snow leopard’ s questionable comeback. Science 359, 1110–1111 (2018).

    ADS 
    CAS 
    PubMed 
    Article 
    PubMed Central 

    Google Scholar 

  • 7.

    Mallon, D. P. & Jackson, R. M. A downlist is not a demotion: Red List status and reality. Oryx. https://doi.org/10.1017/S0030605317000606 (2017).

    Article 

    Google Scholar 

  • 8.

    Sharma, K. et al. PAWS Guidelines. Global Snow Leopard and Ecosystem Protection Program. https://globalsnowleopard.org/wp-content/uploads/2020/08/PAWS-guidelines-2020.pdf (2020).

  • 9.

    Jackson, R. M., Roe, J. D., Wangchuk, R. & Hunter, D. O. Estimating snow leopard population abundance using photography and capture–recapture techniques. Wildl. Soc. Bull. 34, 772–781 (2006).

    Article 

    Google Scholar 

  • 10.

    Karanth, K. U. et al. Science deficiency in conservation practice: The monitoring of tiger populations in India. Anim. Conserv. 6, 141–146 (2003).

    Article 

    Google Scholar 

  • 11.

    Din, J. U. & Nawaz, M. A. Status of snow leopard and prey species in Torkhow valley, district Chitral, Pakistan. J. Anim. Plant Sci. 21, 836–840 (2011).

    Google Scholar 

  • 12.

    O’Connell, A. F., Nichols, J. D. & Karanth, K. U. Camera Traps in Animal Ecology: Methods and Analyses (Springer, 2011).

    Book 

    Google Scholar 

  • 13.

    Durbach, I., Borchers, D., Sutherland, C. & Sharma, K. Fast, exible alternatives to regular grid designs for spatial 2 capture-recapture. Methods Ecol. Evol. 12, 298 (2020).

    Article 

    Google Scholar 

  • 14.

    Suryawanshi, K. R., Khanyari, M., Sharma, K., Lkhagvajav, P. & Mishra, C. Sampling bias in snow leopard population estimation studies. Popul. Ecol. 61, 268–276 (2019).

    Article 

    Google Scholar 

  • 15.

    Dupont, G., Royle, J. A., Nawaz, M. A. & Sutherland, C. Optimal sampling design for spatial capture–recapture. Ecology 102, 1–9 (2020).

    Google Scholar 

  • 16.

    Royle, J. A., Fuller, A. K. & Sutherland, C. Unifying population and landscape ecology with spatial capture–recapture. Ecography (Cop.) 41, 444–456 (2018).

    Article 

    Google Scholar 

  • 17.

    Otis, D. L., Burnham, K. P., White, G. C. & Anderson, D. R. Statistical inference from capture data on closed animal populations. Wildl. Monogr. 62, 3–135 (1978).

    MATH 

    Google Scholar 

  • 18.

    Boulanger, J., Mclellan, B. N., Woods, J. G., Proctor, M. F. & Strobeck, C. Sampling design and bias in dna-based capture–mark–recapture population and density estimates of grizzly bears. J. Wildl. Manage. 68, 457–469 (2004).

    Article 

    Google Scholar 

  • 19.

    White, G. C., Anderson, D. R., Burnham, K. P. & Otis, D. L. Capture-Recapture and Removal Methods for Sampling Closed Populations (Los Alamos National Laboratory, 1982).

    Google Scholar 

  • 20.

    Efford, M. G. & Boulanger, J. Fast evaluation of study designs for spatially explicit capture–recapture. Methods Ecol. Evol. 10, 1529 (2019).

    Article 

    Google Scholar 

  • 21.

    Royle, J. A., Chandler, R. B., Sollmann, R. & Gardner, B. Spatial Capture-Recapture (Academic Press, 2014).

    Google Scholar 

  • 22.

    Morrison, M. L., Block, W. M., Strickland, M. D., Collier, B. A. & Peterson, M. J. Wildlife Study Design (Springer, 2008).

    Book 

    Google Scholar 

  • 23.

    Williams, B. K., Nichols, J. D. & Conroy, M. J. Analysis and Management of Animal Populations (Academic Press, 2002).

    Google Scholar 

  • 24.

    Khan, B. U. Effect of Study Design on Density Estimates of Large Ranging Species (Quaid-i-Azam University, 2019).

    Google Scholar 

  • 25.

    Foster, R. J. & Harmsen, B. J. A critique of density estimation from camera-trap data. J. Wildl. Manage. 76, 224–236 (2012).

    Article 

    Google Scholar 

  • 26.

    Janečka, J. E. et al. Comparison of noninvasive genetic and camera-trapping techniques for surveying snow leopards. J. Mammal. 92, 771–783 (2011).

    Article 

    Google Scholar 

  • 27.

    Subbotin, A. E. & Istomov, S. V. The population status of snow leopards Uncia uncia (Felidae, Carnivora) in the Western Sayan mountain ridge. Dokl. Biol. Sci. 425, 183–186 (2009).

    Article 

    Google Scholar 

  • 28.

    Mackenzie, D. I. & Royle, J. A. Designing occupancy studies: General advice and allocating survey effort. J. Appl. Ecol. 42, 1105–1114 (2005).

    Article 

    Google Scholar 

  • 29.

    Thomas, L. et al. Distance software: Design and analysis of distance sampling surveys for estimating population size. J. Appl. Ecol. 47, 5–14 (2010).

    PubMed 
    Article 
    PubMed Central 

    Google Scholar 

  • 30.

    Sollmann, R., Gardner, B. & Belant, J. L. How does spatial study design influence density estimates from spatial capture-recapture models? PLoS ONE 7, 1–8 (2012).

    Article 
    CAS 

    Google Scholar 

  • 31.

    Tobler, M. W. & Powell, G. V. N. Estimating jaguar densities with camera traps: Problems with current designs and recommendations for future studies. Biol. Conserv. 159, 109–118 (2013).

    Article 

    Google Scholar 

  • 32.

    Sun, C. C., Fuller, A. K. & Andrew Royle, J. Trap configuration and spacing influences parameter estimates in spatial capture-recapture models. PLoS ONE 9, e88025 (2014).

    ADS 
    PubMed 
    PubMed Central 
    Article 
    CAS 

    Google Scholar 

  • 33.

    Shedayi, A. A. et al. Threatened plant resources: Distribution and ecosystem services in the world’s high elevation park of the Karakoram Ranges. Pak. J. Bot. 48, 999–1012 (2016).

    Google Scholar 

  • 34.

    Johansson, Ö. Unveiling the Ghost of the Mountain; Snow Leopard Ecology and Behaviour (Swedish University of Agricultural Sciences, 2017).

    Google Scholar 

  • 35.

    Bischof, R. et al. Using time-to-event analysis to complement hierarchical methods when assessing determinants of photographic detectability during camera trapping. Methods Ecol. Evol. 5, 44–53 (2014).

    Article 

    Google Scholar 

  • 36.

    Efford, M. Density estimation in live-trapping studies. Oikos 106, 598–610 (2004).

    Article 

    Google Scholar 

  • 37.

    R Core Team. R: A Language and Environment for Statistical Computing (2021).

  • 38.

    Sutherland, C., Royle, J. A. & Linden, D. W. oSCR: A spatial capture–recapture R package for inference about spatial ecological processes. Ecography (Cop.) 42, 1459 (2019).

    Article 

    Google Scholar 

  • 39.

    Akaike, H. Akaike’s information criterion. In International Encyclopedia of Statistical Science (ed. Lovric, M.) (Springer, 2011).

    Google Scholar 

  • 40.

    Khan, B. et al. Abundance, distribution and conservation status of Siberian ibex, Marco Polo and Blue sheep in Karakoram-Pamir mountain area. J. King Saud Univ. Sci. 28, 216–225 (2016).

    Article 

    Google Scholar 

  • 41.

    Haider, J., Khan, M. Z., Anwer, M., Ali, S. & Ali, H. Population status and migration trends of Marco Polo argali (Ovis ammon polii) in Pakistan. Mammalia 82, 481–485 (2018).

    Article 

    Google Scholar 

  • 42.

    Ahmad, S. et al. Critical assessment of Asiatic ibex (Capra ibex sibirica) for sustainable harvesting in northern areas of Pakistan. Glob. Ecol. Conserv. 22, e00907 (2020).

    Article 

    Google Scholar 

  • 43.

    Arnold, T. W. Uninformative parameters and model selection using Akaike’s information criterion. J. Wildl. Manage. 74, 1175–1178 (2010).

    Article 

    Google Scholar 

  • 44.

    Flemming, J., Grant, E. H. C., Sterrett, S. C. & Sutherland, C. Experimental evaluation of spatial capture-recapture study design. Ecol. Appl. (2021). In Press

  • 45.

    Sutherland, C., Fuller, A. K. & Royle, J. A. Modelling non-Euclidean movement and landscape connectivity in highly structured ecological networks. Methods Ecol. Evol. 6, 169–177 (2015).

    Article 

    Google Scholar 

  • 46.

    Chetri, M., Odden, M., Sharma, K., Flagstad, Ø. & Wegge, P. Estimating snow leopard density using fecal DNA in a large landscape in north-central Nepal. Glob. Ecol. Conserv. 17, e00548 (2019).

    Article 

    Google Scholar 

  • 47.

    Alexander, J. S., Zhang, C., Shi, K. & Riordan, P. A granular view of a snow leopard population using camera traps in Central China. Biol. Conserv. 197, 27–31 (2016).

    Article 

    Google Scholar 

  • 48.

    Alexander, J. S., Gopalaswamy, A. M., Shi, K., Riordan, P. & Margalida, A. Face value: Towards robust estimates of snow leopard densities. PLoS ONE 10, 1–17 (2015).

    Article 
    CAS 

    Google Scholar 

  • 49.

    Efford, M. G., Dawson, D. K. & Robbins, C. S. DENSITY: Software for analysing capture-recapture data from passive detector arrays. Anim. Biodivers. Conserv. 27, 217 (2004).

    Google Scholar 

  • 50.

    Tourani, M., Dupont, P., Nawaz, M. A. & Bischof, R. Multiple observation processes in spatial capture-recapture models: How much do we gain? Ecology 101, e03030 (2020).

    PubMed 
    Article 
    PubMed Central 

    Google Scholar 

  • 51.

    Efford, M. secr: Spatially explicit capture–recapture models. R package version 3.1.6. secr 3.1 R Packag. 1–20 (2018). https://doi.org/10.1002/14651858.

  • 52.

    Clark, J. D. Comparing clustered sampling designs for spatially explicit estimation of population density. Popul. Ecol. 61, 93–101 (2019).

    Article 

    Google Scholar 

  • 53.

    Humm, J. M., McCown, J. W., Scheick, B. K. & Clark, J. D. Spatially explicit population estimates for black bears based on cluster sampling. J. Wildl. Manage. 81, 1187–1201 (2017).

    Article 

    Google Scholar 

  • 54.

    Morin, D. J., Waits, L. P., McNitt, D. C. & Kelly, M. J. Efficient single-survey estimation of carnivore density using fecal DNA and spatial capture-recapture: A bobcat case study. Popul. Ecol. 60, 197–209 (2018).

    Article 

    Google Scholar 

  • 55.

    Steenweg, R. et al. Scaling-up camera traps: Monitoring the planet’s biodiversity with networks of remote sensors. Front. Ecol. Environ. 15, 26–34 (2017).

    Article 

    Google Scholar 


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