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🧬 The Felid Wiki — 3,000 research summaries
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17 summaries matching “jaguar” in Camera-Trap Methods
Differential use of trails by forest mammals and implications for camera-trap studies in Belize
PaperHarmsen and colleagues documented how different mammal species use trails versus off-trail forest to varying degrees, and showed that this differential trail use biases camera-trap data when stations…
Bart J. Harmsen, Rebecca J. Foster, Scott C. Silver, Linde E. T. Ostro, C. Patrick Doncaster · Biotropica · 2010
Estimating jaguar densities with camera traps: problems with current designs and recommendations
PaperTobler and Powell used extensive simulations and empirical jaguar data to expose how common camera-trap study designs produce biased or imprecise density estimates. They showed that arrays too small r…
Mathias W. Tobler, George V. N. Powell · Biological Conservation · 2013
Estimating jaguar density in the Pantanal using camera traps combined with GPS telemetry
PaperSoisalo and Cavalcanti combined camera-trap capture-recapture with GPS radio-telemetry to refine jaguar density estimates in the Brazilian Pantanal, using telemetry-derived movement data to better def…
Marianne K. Soisalo, Sandra M. C. Cavalcanti · Biological Conservation · 2006
Estimating puma densities from camera trapping across three study sites: Bolivia, Argentina, Belize
PaperKelly and colleagues estimated puma densities at multiple Latin American sites using camera-trap capture-recapture, confronting the challenge that pumas, unlike jaguars, have relatively uniform coats…
Marcella J. Kelly, Andrew J. Noss, Marcelo S. Di Bitetti, Leonardo Maffei, Rosario L. Arispe, et al. · Journal of Mammalogy · 2008
Estimation of ocelot density in the Pantanal using capture-recapture analysis of camera-trapping data
PaperTrolle and Kery produced one of the early rigorous density estimates for ocelots, applying closed-population capture-recapture to camera-trap data from the Brazilian Pantanal. Ocelots are well suited…
Mogens Trolle, Marc Kery · Journal of Mammalogy · 2003
Improving density estimates for elusive carnivores: sex-specific detection and movement in SCR
PaperSollmann and colleagues demonstrated that ignoring sex differences in movement and detectability biases carnivore density estimates, using jaguar camera-trap data from central Brazil. Because male jag…
Rahel Sollmann, Mariana M. Furtado, Beth Gardner, Heribert Hofer, Anah T. A. Jacomo, et al. · Biological Conservation · 2011
One thousand jaguars in Bolivia's Chaco? Camera trapping in Kaa-Iya National Park
PaperMaffei, Cuellar, and Noss applied jaguar camera-trap capture-recapture in the dry Chaco forest of Bolivia's Kaa-Iya National Park, one of the largest protected areas in the region. From individually i…
Leonardo Maffei, Erika Cuellar, Andrew Noss · Journal of Zoology · 2004
Research overview: computer-vision individual identification from coat patterns
OverviewIdentifying individual cats from their unique stripe, spot, or rosette patterns is the cornerstone of capture-recapture, and software increasingly assists this once wholly manual task. This overview s…
Research overview: deep-learning re-identification of individual cats
OverviewEmerging deep-learning methods aim to automate not just species classification but individual identification, re-identifying specific cats from their coat patterns to build capture histories for captu…
Research overview: jaguar density networks and range-wide monitoring
OverviewJaguars are monitored across the Americas through camera-trap capture-recapture, and coordinated initiatives increasingly link local surveys into range-wide networks producing comparable density estim…
Research overview: scent-marking and communication behavior on camera
OverviewWild cats communicate through scent-marking, spraying, scraping, cheek-rubbing, and clawing, leaving signals at conspicuous sites that they revisit, behavior that camera traps are uniquely positioned…
Research overview: spatial and temporal avoidance among sympatric felids
OverviewWhere multiple cat species coexist, smaller felids often adjust their use of space and time to avoid larger, dominant competitors, and camera-trap data are a primary means of detecting these interacti…
Research overview: stripe and rosette pattern-matching software for felid identification
OverviewDifferent cat species carry different natural marks, tiger stripes, leopard and jaguar rosettes, ocelot chains, cheetah spots, and pattern-matching software exploits these to identify individuals semi…
Research overview: the geographic and demographic closure assumption in capture-recapture
OverviewClosed-population capture-recapture models assume the population neither gains nor loses individuals during the survey, through births, deaths, immigration, or emigration, an assumption central to est…
Research overview: white-flash versus infrared cameras and image quality trade-offs
OverviewCamera traps illuminate night scenes either with a bright white (xenon or LED) flash that yields full-color images or with infrared illumination that produces monochrome photos invisible to most anima…
Spatially explicit maximum likelihood methods for capture-recapture studies
PaperBorchers and Efford provided the rigorous likelihood-based foundation for spatially explicit capture-recapture, formalizing how to estimate density when detectors such as camera stations have fixed lo…
David L. Borchers, Murray G. Efford · Biometrics · 2008
The use of camera traps for estimating jaguar abundance and density using capture/recapture analysis
PaperSilver and colleagues adapted the tiger camera-trap framework to jaguars, whose unique rosette patterns serve as individual marks. Working in Belize and across Latin American sites, they detailed prac…
Scott C. Silver, Linde E. T. Ostro, Laura K. Marsh, Leonardo Maffei, Andrew J. Noss, et al. · Oryx · 2004