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Nevertheless, there are a number of problems associated with study design which are motivating researchers to search for a compromise that ensures improvement of precision while being cost\u2010effective. We have used data from a capture\u2013recapture study in a forested area in central Brazil to evaluate the effectiveness of using one versus two cameras per trapping station for determining jaguar (\n                    <jats:italic>Panthera onca<\/jats:italic>\n                    ) density and capture rates of several other mammals. The capture rate for the jaguar and other species recorded with only one camera was lower than that with two cameras. The number of jaguars identified using photos from one camera ranged between six and seven animals, but reached ten individuals when two\u2010camera sets were used where pictures of both flanks could be positively individualized. These differences, combined with different estimates of effective sampled area size, resulted in jaguar densities estimates ranging from 2.18 to 5.40 and 3.99 individuals\/100 km\n                    <jats:sup>2<\/jats:sup>\n                    when one and two cameras were used per station, respectively (using the half\u2010MMDM and Heterogeneity model). Based on our results, we recommend the use of two cameras per station for jaguar density monitoring to ensure reasonable levels of reliability and accuracy of estimates despite a small sample size.\n                  <\/jats:p>","DOI":"10.1007\/s11284-012-0938-4","type":"journal-article","created":{"date-parts":[[2012,3,7]],"date-time":"2012-03-07T23:43:13Z","timestamp":1331163793000},"page":"639-648","source":"Crossref","is-referenced-by-count":16,"title":["One or two cameras per station? Monitoring jaguars and other mammals in the Amazon"],"prefix":"10.1111","volume":"27","author":[{"given":"Nuno","family":"Negr\u00f5es","sequence":"first","affiliation":[{"name":"Center for Environmental and Marine Studies (CESAM) and Biology Department Aveiro University Campus Universit\u00e1rio de Santiago Aveiro 3810\u2010193 Portugal"},{"name":"Department of Conservation Biology, Estaci\u00f3n Biol\u00f3gica de Do\u00f1ana Consejo Superior de Investigaciones Cient\u00edficas (CSIC) Calle Americo Vespucio s\/n Seville 41092 Spain"},{"name":"Jaguar Conservation Fund Caixa\u2010Postal 193 GO\u2010341 km 84, Zona Rural Mineiros GO 75.830\u2010000 Brazil"}]},{"given":"Rahel","family":"Sollmann","sequence":"additional","affiliation":[{"name":"Jaguar Conservation Fund Caixa\u2010Postal 193 GO\u2010341 km 84, Zona Rural Mineiros GO 75.830\u2010000 Brazil"},{"name":"Leibniz Institute for Zoo and Wildlife Research Alfred\u2010Kowalke\u2010Str. 17 Berlin 10315 Germany"}]},{"given":"Carlos","family":"Fonseca","sequence":"additional","affiliation":[{"name":"Center for Environmental and Marine Studies (CESAM) and Biology Department Aveiro University Campus Universit\u00e1rio de Santiago Aveiro 3810\u2010193 Portugal"}]},{"given":"Anah T. 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