• Estimating jaguar densities with camera traps: Problems with current designs and recommendations for future studies

      Tobler, Mathias W.; Powell, G.V.N. (2013)
      Camera traps have become the main method for estimating jaguar (Panthera onca) densities. Over 74 studies have been carried out throughout the species range following standard design recommendations. We reviewed the study designs used by these studies and the results obtained. Using simulated data we evaluated the performance of different statistical methods for estimating density from camera trap data including the closed-population capture–recapture models Mo and Mh with a buffer of ½ and the full mean maximum distance moved (MMDM) and spatially explicit capture–recapture (SECR) models under different study designs and scenarios….
    • High jaguar densities and large population sizes in the core habitat of the southwestern Amazon

      Tobler, Mathias W.; Carrillo-Percastegui, S.E.; Zúñiga Hartley, A.; Powell, G.V.N. (2013)
      Over 80% of the currently occupied range of the jaguar (Panthera onca) lies in the Amazon. However, few density estimates exist for this habitat. Between 2005 and 2010 we carried out six camera trap surveys at three different sites in the department of Madre de Dios in the Peruvian Amazon….