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Density estimation of tiger and leopard using spatially explicit capture-recapture framework.

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Summary
This summary is machine-generated.

Accurate population estimates for tigers and leopards were obtained using spatially explicit capture-recapture (SECR) methods. Both species thrive in human-dominated landscapes, highlighting the need for prey management in buffer zones.

Keywords:
BandhavgarhCamera trappingLeopardPopulation densitySECRTiger

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Area of Science:

  • Wildlife ecology
  • Conservation biology
  • Population dynamics

Background:

  • Estimating populations of elusive large carnivores like tigers and leopards is crucial for conservation.
  • Traditional capture-recapture (CR) methods can be biased due to carnivores' cryptic nature and low densities.
  • Spatially explicit capture-recapture (SECR) offers a more robust framework for density estimation.

Purpose of the Study:

  • To estimate tiger (Panthera tigris tigris) and leopard (Panthera pardus fusca) densities using the SECR framework.
  • To identify biotic and abiotic factors influencing tiger and leopard densities.
  • To provide baseline data for conservation management in human-dominated landscapes.

Main Methods:

  • Utilized capture-recapture data from camera traps for tigers and leopards.
  • Modeled data within the spatially explicit capture-recapture (SECR) framework.
  • Incorporated covariates such as road density, terrain ruggedness, and habitat composition (cropland, natural vegetation).

Main Results:

  • Estimated tiger density at 4.71 ± 1.20 per 100 km² and leopard density at 3.03 ± 0.78 per 100 km².
  • Leopard density positively correlated with road density, terrain ruggedness, and mixed habitats of cropland and natural vegetation.
  • Tiger density was positively influenced by a mosaic of cropland and natural vegetation.

Conclusions:

  • This study provides the first robust density estimates for tigers and leopards in the study area.
  • Large carnivores can maintain moderate densities in human-dominated regions adjacent to protected areas, utilizing livestock.
  • Effective conservation requires management strategies that sustain wild prey populations in buffer zones around protected areas.