Monitoring population density and activity pattern of white-tailed deer (Odocoileus virginianus) in Central Mexico, using camera trapping

Mammalia ◽  
2014 ◽  
Vol 0 (0) ◽  
Author(s):  
Leroy Soria-Díaz ◽  
Octavio Monroy-Vilchis

AbstractWhite-tailed deer (

1950 ◽  
Vol 14 (C) ◽  
pp. 270-275 ◽  
Author(s):  
Eilif V. Miller ◽  
John B. Pitner ◽  
Ricardo Villa J. ◽  
Carlos Romo G.

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Stefano Anile ◽  
Sébastien Devillard

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


2020 ◽  
Vol 4 (1) ◽  
pp. 50-55
Author(s):  
Rama Mishra ◽  
Birendra Gautam ◽  
Shyam Kumar Shah ◽  
Naresh Subedi ◽  
Chiranjibi Prasad Pokheral ◽  
...  

Jungle cat (Felis chaus) is one of the widely distributed but less studied species in Nepal. We studied jungle cat distribution and their activity pattern in Koshi Tappu Wildlife Reserve (KTWR), Nepal. Photographs of the jungle cats obtained during camera trapping survey targeted to fishing cats in the winter season of two consecutive years (2016 and 2017) were used for this study. With an effort of 525 trap days from 69 stations, we obtained a total of 234 images/videos of jungle cats on 37 occasions from 15 stations. We recorded jungle cats distributed in the eastern buffer zone of the KTWR. All the jungle cat photographs were obtained in the night with peak activity within a couple of hours following the sunset. We suggest to carry out focused study specific to jungle cats to understand their distribution, status and diet.


2014 ◽  
Vol 7 (4) ◽  
pp. 690-705 ◽  
Author(s):  
Torrey W. Rodgers ◽  
Jacalyn Giacalone ◽  
Edward J. Heske ◽  
Jan E. Janečka ◽  
Christopher A. Phillips ◽  
...  

2011 ◽  
Vol 57 (2) ◽  
pp. 165-172 ◽  
Author(s):  
Emiliano Manzo ◽  
Paola Bartolommei ◽  
J. Marcus Rowcliffe ◽  
Roberto Cozzolino

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Stefano Anile ◽  
Sébastien Devillard

Abstract Power laws are cornerstone relationships in ecology and evolutionary biology. The density-mass allometry (DMA), which predicts an allometric scaling of population abundance, and Taylor’s law (TL), which predicts a decrease in the population abundance variation along with a decrease in population density, have enhanced our knowledge of inter- and intra-specific variation in population abundance. When combined, these two power laws led to the variance-mass allometry (VMA), which states that larger species have lower spatial variation in population density than smaller species. The VMA has been predicted through theoretical models, however few studies have investigated if this law is also supported by empirical data. Here, to formally test the VMA, we have used the population density estimates obtained through worldwide camera trapping studies for an emblematic and ecologically important carnivorous taxa, the Felidae family. Our results showed that the VMA law hold in felids, as well as the TL and the DMA laws; bigger cat species showed less variation for the population density than smaller species. These results have important implications for the conservation of wildlife population and confirm the validity of important ecological concepts, like the allometric scaling of population growth rate and the slow-fast continuum of life history strategies.


Oryx ◽  
2019 ◽  
pp. 1-10 ◽  
Author(s):  
Azlan Mohamed ◽  
Rahel Sollmann ◽  
Seth Timothy Wong ◽  
Jürgen Niedballa ◽  
Jesse F. Abrams ◽  
...  

AbstractEven with intensive sampling effort, data often remain sparse when estimating population density of elusive species such as the Sunda clouded leopard Neofelis diardi. An inadequate number of recaptures can make it difficult to account for heterogeneity in detection parameters. We used data from large-scale camera-trapping surveys in three forest reserves in Sabah, Malaysian Borneo, to (1) examine whether a high-density camera-trap network increases the number of recaptures for females, which tend to be more difficult to detect, thus improving the accuracy of density estimates; (2) compare density estimates from models incorporating individual heterogeneity in detection parameters with estimates from the null model to evaluate its potential bias; and (3) investigate how the size of the camera-trap grid affects density and movement estimates. We found that individual heterogeneity could not be incorporated in the single-site data analysis and only conservative null model estimates could be generated. However, aggregating data across study sites enabled us to account for individual heterogeneity and we estimated densities of 1.27–2.82 individuals/100 km2, 2–3 times higher than estimates from null models. In light of these findings, it is possible that earlier studies underestimated population density. Similar densities found in well-managed forest and recently selectively logged forest suggest that Sunda clouded leopards are relatively resilient to forest disturbances. Our analysis also revealed that camera-trapping grids for Sunda clouded leopard density estimations should cover large areas (c. 250 km2), although smaller grids could be appropriate if density or detectability are higher.


Crustaceana ◽  
2007 ◽  
Vol 80 (3) ◽  
pp. 313-325 ◽  
Author(s):  
Luis Abarca-Arenas ◽  
Fernando Alvarez ◽  
Mateo Escobar ◽  
Elizabeth Valero-Pacheco

2020 ◽  
Vol 8 ◽  
Author(s):  
Nilanjan Chatterjee ◽  
Parag Nigam ◽  
Bilal Habib

Studies on carnivores are skewed toward larger species in India, limiting ecological information of the smaller ones. Basic ecological understanding like population density, distribution, habitat-use patterns of small carnivores is lacking. This inadequate knowledge has led to disagreement between conservation approaches in different landscapes. Honey badgers (Mellivora capensis) are cryptic carnivores distributed across large areas of Africa and Asia; however, fundamental ecological knowledge is scarce. The species is thought to exist at low population densities throughout its range. We used a large camera trap dataset from a tiger reserve in Maharashtra State, India to understand the population density, habitat preference, and diel activity pattern of the species. We applied an extension of the spatial count model for the estimation of population. Habitat preference analyses were carried out using generalized linear models and activity patterns were analyzed using kernel-density functions. The population density was estimated as 14.09 (95% CI 10–22.25) individuals per 100 km2. Habitat use revealed a positive association with forest cover and negative association with elevation. This may expose the species to other large carnivores in the habitat but honey badger activity pattern peaked at midnight retaining minimum temporal overlap with other large carnivores (e.g., tiger Panthera tigris, leopard Panthera pardus, and dhole Cuon alpinus) and moderate overlap with small carnivores (e.g., jungle cat Felis chaus, rusty-spotted cat Prionailurus rubiginosus). These behaviors, in turn, may facilitate the coexistence of species at such high density even with high carnivore density. We hope the findings of this study will fill the existing knowledge gap of this species and aid in guiding the conservation of the species in other landscapes and reserves.


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