The use of camera traps for estimating jaguar <i>Panthera onca</i> abundance and density using capture/recapture analysis

Silver, Scott C.; Ostro, Linde E. T.; Marsh, Laura K.; Maffei, Leonardo; Noss, Andrew J.; Kelly, Marcella J.; Wallace, Robert B.; Gómez, Humberto; Ayala, Guido

doi:10.1017/s0030605304000286

Cited by 418 publications

(442 citation statements)

References 15 publications

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“…Specifically, a camera trap was installed at a site on a probable jaguar route in the vicinity of a guard stations named "caseta Cusumbo." The photographic records obtained from larger cats allowed us to identify species and determine the population estimate for jaguar in BPCB by capturing and recapturing individuals through the identification of natural jaguar marks with the methodology proposed elsewhere [31,32]. Similarly, the photo-records of medium and large mammals were used to determine the tropical fauna and/or potential prey of big cats, including jaguars.…”

Section: Camera Trap Deploymentmentioning

confidence: 99%

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The Last Coastal Jaguars of Ecuador: Ecology, Conservation and Management Implications

Mendoza¹,

Cun²,

Horstman³

et al. 2017

Big Cats

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Ecuador is one of the top countries with the highest biodiversity indexes in the planet. Among the mammal species inhabiting tropical forests along Ecuador's coast, wild cats such as ocelots (Leopardus pardalis), jaguarundis (Puma yagouaroundi), cougars (Puma concolor) and jaguars (Panthera onca) are a key group of carnivores deserving critical consideration because these species are facing several anthropogenic threats and conservation challenges. Of particularly attention is the critically endangered subspecies of jaguar (Panthera onca centralis) from the Ecuadorian coast. Despite this species is the largest cat in Ecuador's coastal tropical forests and demanding large territories to survive, little is known about its population and conservation status. In most forests along Ecuador's coast, habitat loss due to deforestation and fragmentation, poaching of prey and illegal hunting threaten the survival of jaguars and questions linger about its ecology and population health. Based on recent field observations using transects and deployment of camera traps, as well as surveys conducted with the local community in and around Cerro Blanco Protected Forest and surrounding areas of the Cordillera Chongón-Colonche Mountain Range, we advance the state of the ecological knowledge of coastal jaguar populations with conservation implications of its threatened habitat and long-term survival in Ecuador.

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Section: Camera Trap Deploymentmentioning

confidence: 99%

“…The field studies on jaguar abundances conducted in Central and South America indicate absolute abundances ranging from 1 to 9 jaguars per 100 km 2 [17,32,[35][36][37][38]. Assuming that the lower bound of this abundance range (i.e.…”

Section: Abundance Estimatesmentioning

confidence: 99%

The Last Coastal Jaguars of Ecuador: Ecology, Conservation and Management Implications

Mendoza¹,

Cun²,

Horstman³

et al. 2017

Big Cats

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“…O'Brien (2008) stated that the next challenge for researchers will be the elaboration of projects about the potential use of camera traps in biodiversity monitoring. Some authors state that a standardised method allows simple comparisons between sampling sites and inventories (Silver et al, 2004;Karanth and Nichols, 1998;O'Brien, 2008;Tobler et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Comparison of two mammalian surveys made with camera traps in southeastern Brazil, focusing the abundance of wild mammals and domestic dogs

Carvalho

Adania²,

Esbérard

2013

Braz. J. Biol.

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Sampling allows assessing the impact of human activities on mammal communities. It is also possible to assess the accuracy of different sampling methods, especially when the sampling effort is similar. The present study aimed at comparing two mammalian surveys carried out over a three-year interval, in terms of sampling effort, capture success, abundance of domestic dogs, impact of human activities, and relative biomass using camera traps, in the Serra do Japi Biological Reserve and surroundings, located in Jundiaí, state of São Paulo, southeastern Brazil. The total richness recorded was 13 species, one domestic and 12 wild mammals. Sampling effort in both surveys was similar, but capture success and number of captures differed. The abundance of wild mammals and dogs did also differ between surveys. There was a highly significant correlation between abundance of wild mammals and capture effort for the survey performed in 2006/2007, but not for the survey performed in 2009/2010. The difference between samples may be related to human disturbance, since the number of domestic mammals photographed was higher in the second survey, three years after the first survey. Despite being a reserve, the area is still under pressure from urbanization, biological invasion, environmental degradation, and hunting, which may reduce the abundance of wild mammals.Keywords: survey, diversity, domestic animals, methods, nature reserves.Comparação entre duas amostragens de mamíferos feitas com armadilhas fotográficas no sudeste do Brasil, com foco na abundância de mamíferos silvestres e cães domésticos Resumo Uma das formas de avaliar o impacto das atividades humanas nas comunidades de mamíferos e ter maior conhecimento e acurácia sobre o método utilizado é realizar amostragens, proporcionando a comparação do método, principalmente quando o esforço amostral é semelhante. O presente estudo visou a comparar dois levantamentos de mamíferos realizados na mesma área com três anos de intervalo, quanto aos seguintes aspectos: esforço amostral, sucesso de captura, abundância de cães domésticos, presença de atividades humanas e biomassa relativa das espécies. A riqueza total obtida nos dois períodos de amostragem foi de 13 espécies, sendo 12 espécies selvagens e uma de animal doméstico. O esforço de amostragem para as duas pesquisas foi semelhante, porém o sucesso de captura foi diferente, quando comparados entre si. A abundância de mamíferos selvagens e cães também mostrou diferenças entre os dois períodos. A correlação entre a abundância de mamíferos selvagens e o esforço de captura provou ser altamente significativa para a amostragem realizada em 2006/2007, mas não foi significativa para a realizada em 2009/2010. A diferença entre as amostras pode estar ligada à perturbação humana nesse ambiente, já que o número de animais domésticos fotografados foi maior após três anos de amostragem. Apesar de ser uma área de conservação, também está sujeita a pressões, como especulação imobiliária, invasões, destruição e caça, o que pode estar dim...

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“…These four small Neotropical felids occur in low densities and are difficult to find in their natural environment (CHIARELLO 1999, SILVER et al 2004, DI BITETTI et al 2010. Furthermore, they have large home ranges and territories, and have nocturnal/twilight activity, which reduce the efficiency of direct sampling techniques in-situ and results in insufficient ecological data in the literature (DOWNEY et al 2007, ABREU et al 2008, DI BITETTI et al 2010.…”

mentioning

confidence: 99%

Is it possible to identify four small Neotropical felids (Carnivora: Felidae) based on hair microstructure?

Rinaldi

Rodriguez²,

Passos

2015

Zoologia (Curitiba)

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The use of camera traps for estimating jaguar Panthera onca abundance and density using capture/recapture analysis

Cited by 418 publications

References 15 publications

The Last Coastal Jaguars of Ecuador: Ecology, Conservation and Management Implications

The Last Coastal Jaguars of Ecuador: Ecology, Conservation and Management Implications

Comparison of two mammalian surveys made with camera traps in southeastern Brazil, focusing the abundance of wild mammals and domestic dogs

Is it possible to identify four small Neotropical felids (Carnivora: Felidae) based on hair microstructure?

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