scholarly journals Using camera traps to investigate spatial co‐occurrence between exotic predators and native prey species: a case study from northeastern Madagascar

2018 ◽  
Vol 307 (4) ◽  
pp. 264-273 ◽  
Author(s):  
A. Murphy ◽  
M. J. Kelly ◽  
S. M. Karpanty ◽  
V. Andrianjakarivelo ◽  
Z. J. Farris
Keyword(s):  
Prey Species ◽  
Camera Traps

scholarly journals Using BAD for good: how best available data facilitated a precautionary policy change to improve protection of the prey of the tiger Panthera tigris in Malaysia

Oryx ◽  
2013 ◽  
Vol 47 (3) ◽  
pp. 420-426 ◽  
Author(s):  
Kae Kawanishi ◽  
Gopalasamy Reuben Clements ◽  
Melvin Gumal ◽  
Gareth Goldthorpe ◽  
Mohd Nawayai Yasak ◽  
...  
Keyword(s):  
Prey Species ◽  
Action Plan ◽  
Legal Protection ◽  
Camera Trapping ◽  
Panthera Tigris ◽  
Policy Changes ◽  
Illegal Hunting ◽  
Tapirus Indicus ◽  
Prey Populations

AbstractTiger Panthera tigris populations are under threat from poaching and depletion of their prey populations. The National Tiger Action Plan for Malaysia contains several actions addressing the threat of legal and illegal hunting of tiger prey species. One action in this plan required an investigation of whether urgent policy changes were needed to improve the protection of the prey of tigers, based on existing data. As the lack of reliable baseline data prevented us from determining population trends accurately, we compiled camera-trapping data from 23 studies conducted between 1997 and 2008 on four principal tiger prey species (sambar Rusa unicolor, barking deer Muntiacus muntjac, wild boar Sus scrofa and bearded pig S. barbatus) and two potential prey species (gaur Bos gaurus and Malayan tapir Tapirus indicus) and compared their distributions and relative abundances. From 10,145 wildlife photographs spanning 40,303 trap-nights, sambar, bearded pig and gaur appeared to be most threatened given their restricted distribution and low relative abundance. Among these, the gaur has full legal protection and has received more conservation attention than the other two species. Following our assessment and advocacy a 6-year moratorium on hunting both sambar and barking deer was imposed by the Malaysian government and the highest protection status possible was afforded the bearded pig. This case study illustrates how best available data (BAD), in this case from camera-trapping studies, can be harnessed to effect precautionary policy changes to curb the impacts of hunting on threatened predator and prey populations that could crash well before resources would otherwise be available for rigorous scientific assessments.

scholarly journals Prey species and prey selection of dholes at three different sites in Thailand

2020 ◽  
Vol 21 (11) ◽  
Author(s):  
KHWANRUTAI CHARASPET ◽  
Ronglarp - Sukmasuang ◽  
NORASET KHOEWSREE ◽  
MANANYA PLA-ARD ◽  
YUWALUK CHANACHAI
Keyword(s):  
National Park ◽  
Prey Species ◽  
Dietary Diversity ◽  
Prey Selection ◽  
Selection Index ◽  
Camera Traps ◽  
Total Biomass ◽  
Wildlife Sanctuary ◽  
Khao Yai National Park ◽  
Selection Of

Abstract. Charaspet K, Sukmasuang R, Khoewsree N, Pla-ard M, Chanachai Y. 2020. Prey species and prey selection of dholes at three different sites in Thailand. Biodiversitas 21: 5248-5262. The study of prey species and prey selection of Dholes at 3 different sites was conducted at Khao Yai National Park, Salak Pra, and Huai Kha Khaeng Wildlife Sanctuaries from 2013 to 2020. Information on Dhole prey at the sites was collected from the residues of dhole scats, from which the selection index, the relative biomass of the prey, and the relative amounts of the consumed prey were calculated. The data were collected simultaneously with the use of camera traps at each site. The study revealed that there were 13 species of Dhole prey with body weight over 5 kg. The result indicated that there were 7 species of even-toed ungulates. The relative biomass of even-toed ungulates ranged between 76.78 - 90.50% of the total biomass of all the Dholes’ consumed prey for all study sites. The dietary diversity index unveiled a similar index in all areas, which proved the adequacy of the analyzed scats. However, the Niche breadth index, which indicates the relevance of prey selection and prey species to the appearances of the prey at each site, was found to be high at Huai Kha Khaeng Wildlife Sanctuary, Khao Yai National Park, while the index was found to be low at Salak Pra Wildlife Sanctuary. The results revealed that Dholes consumed viverrid species and Malayan porcupine more often at the site where there were large carnivores. The recommendation from this study was the conservation and restoration of the ungulate populations, the main prey, as it greatly affects the conservation of the Dhole populations in Thailand.  Grassland and salt lick sites, water sources improvements are also important to promote prey population. The conservation of wildlife prey by releasing them to nature, as currently conducted, has an effect on the increase of Dholes’ prey species.

scholarly journals Does intraspecific variation in the energy value of a prey species to its predators matter in studies of ecological energetics? A case study using insectivorous vertebrates

Ecoscience ◽  
1996 ◽  
Vol 3 (3) ◽  
pp. 247-251 ◽  
Author(s):  
Stephen J. Brooks ◽  
Michael C. Calver ◽  
Christopher R. Dickman ◽  
Catherine E. Meathrel ◽  
J. Stuart Bradley
Keyword(s):  
Intraspecific Variation ◽  
Prey Species ◽  
Energy Value ◽  
Ecological Energetics

Is camera-trapping an efficient method for surveying mammals in Neotropical forests? A case study in south-eastern Brazil

2005 ◽  
Vol 21 (1) ◽  
pp. 121-125 ◽  
Author(s):  
Ana Carolina Srbek-Araujo ◽  
Adriano Garcia Chiarello
Keyword(s):  
Atlantic Forest ◽  
Indirect Evidence ◽  
Camera Traps ◽  
Camera Trapping ◽  
Neotropical Forests ◽  
South Eastern ◽  
Eastern Brazil ◽  
Line Transects

Although highly diverse (Fonseca et al. 1996), the Atlantic forest mammal fauna is still poorly known, with very few sites exhaustively inventoried or subjected to long-term studies (Passamani et al. 2000). Although the first surveys using camera traps were carried out in the 1920s (e.g. Chapman 1927), most studies are rather recent (Karanth & Nichols 1998). This is not different in Brazil, where few studies have been published (Marques & Ramos 2001, Santos-Filho & Silva 2002, Silveira et al. 2003, Trolle 2003, Trolle & Kéry 2003). Given this, the objective of this paper is to assess the efficiency of camera trapping as an inventory technique for Neotropical forests in general and Atlantic forest in particular. The study was conducted at the Santa Lúcia Biological Station (SLBS), a biologically rich Atlantic Forest preserve located in south-eastern Brazil (Mendes & Padovan 2000) where mammals have been intensively live-trapped, observed from line-transects or had indirect evidence of their presence (faeces, footprints, scratches, etc.) recorded in earlier years (Passamani et al. 2000).

scholarly journals Critically Endangered Arabian leopards Panthera pardus nimr persist in the Jabal Samhan Nature Reserve, Oman

Oryx ◽  
2006 ◽  
Vol 40 (3) ◽  
pp. 287-294 ◽  
Author(s):  
James Andrew Spalton ◽  
Hadi Musalam al Hikmani ◽  
David Willis ◽  
Ali Salim Bait Said
Keyword(s):  
Nature Reserve ◽  
Prey Species ◽  
Red List ◽  
Camera Traps ◽  
Panthera Pardus ◽  
Mammal Species ◽  
Trail Use ◽  
Main Challenge ◽  
Two Peaks ◽  
Temporal Overlap

Between 1997 and 2000 a survey of the Arabian subspecies of leopard Panthera pardus nimr was conducted in the little known Jabal Samhan Nature Reserve in southern Oman. Using camera-traps 251 photographic records were obtained of 17 individual leopards; nine females, five males, two adults of unknown sex and one cub. Leopards were usually solitary and trail use and movements suggested large ranges characterized by spatial sharing but little temporal overlap. More active by day than night in undisturbed areas, overall the leopards exhibited two peaks in activity, morning and evening. The survey also provided records of leopard prey species and first records of nine Red List mammal species previously unrecorded in Jabal Samhan. Although people are mostly absent from the Reserve there is some conflict between leopards and shepherds who live outside the Reserve. The numbers and activities of frankincense harvesters in the Reserve need to be managed to safeguard the leopard and its habitat. The main challenge for the future is to find ways whereby local communities can benefit from the presence of the Reserve and from the leopards that the Reserve seeks to safeguard.

scholarly journals Baiting/Luring Improves Detection Probability and Species Identification—A Case Study of Mustelids with Camera Traps

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2178
Author(s):  
Christoph Randler ◽  
Tobias Katzmaier ◽  
Jochen Kalb ◽  
Nadine Kalb ◽  
Thomas K. Gottschalk
Keyword(s):  
Species Identification ◽  
Camera Traps ◽  
Biological Research ◽  
Control Group ◽  
Target Species ◽  
Control Group Design ◽  
Species Activity ◽  
Trail Cameras ◽  
Scent Lures

Motion-triggered trail cameras (hereafter camera traps) are powerful tools which are increasingly used in biological research, especially for species inventories or the estimation of species activity. However, camera traps do not always reliably detect animal visits, as a target species might be too fast, too small, or too far away to trigger an image. Therefore, researchers often apply attractants, such as food or glandular scents, to increase the likelihood of capturing animals. Moreover, with attractants, individuals might remain in front of a camera trap for longer periods leading to a higher number of images and enhanced image quality, which in turn might aid in species identification. The current study compared how two commonly used attractants, bait (tuna) and glandular scent (mustelid mix), affected the detection and the number of images taken by camera traps compared to control camera sites with conventional camera traps. We used a before–after control group design, including a baseline. Attractants increased the probability of detecting the target species and number of images. Tuna experiments produced on average 7.25 times as many images per visit than control camera traps, and scent lures produced on average 18.7 times as many images per visit than the control traps.

scholarly journals Visitor Counting and Monitoring in Forests Using Camera Traps: A Case Study from Bavaria (Southern Germany)

Land ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 736
Author(s):  
Gerd Lupp ◽  
Valerie Kantelberg ◽  
Bernhard Förster ◽  
Carolina Honert ◽  
Johannes Naumann ◽  
...  
Keyword(s):  
National Parks ◽  
Camera Traps ◽  
Wildlife Monitoring ◽  
Urban Green Spaces ◽  
Visitor Management ◽  
Recreation Areas ◽  
Outdoor Environments ◽  
Visitor Numbers ◽  
Correlation Factors

A variety of counting methods exist to analyze visitor numbers of outdoor settings such as national parks, recreation areas and urban green spaces, with sensor-based approaches being the most frequently applied. In this paper, we describe the application and practicality of camera traps originally designed for wildlife monitoring for visitor management purposes. The focus of the work is on the practicality of trigger camera traps and data collection for visitor monitoring from a more practice- and management-oriented perspective. Camera traps can provide interesting in-depth and detailed information about recreationists and are flexible and suitable for various uses; however, assessing the visual data manually requires significant staff and working time. To deal with the large amounts of data gathered for numbers of passersby and recreation activities, correlation factors between passersby and pictures were determined, so that the number of passersby related to the number of pictures taken per day or per other time unit could be established. In focusing on using the camera traps and assessing the generated data, it became clear that more studies have to be conducted to compare different methods of visitor monitoring and their accuracy in different outdoor environments.

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