02715nas a2200229   4500008004100000245006800041210006600109520178800175653002401963653002301987653002402010653002302034653002202057653002002079100003102099700002702130700003002157700001802187700002502205700002102230856023402251       2019                        eng d00aA roadmap for survey designs in terrestrial acoustic monitoring0 aroadmap for survey designs in terrestrial acoustic monitoring3 a<p>Passive acoustic monitoring (PAM) is increasingly popular in ecological research and conservation programs, with high-volume and long-term data collection provided by automatized acoustic sensors offering unprecedented opportunities for faunal and ecosystem surveys. Practitioners and newcomers interested in PAM can easily find technical specifications for acoustic sensors and microphones, but guidelines on how to plan survey designs are largely scattered over the literature. Here, we (i) review spatial and temporal sampling designs used in passive acoustic monitoring, (ii) provide a synthesis of the crucial aspects of PAM survey design and (iii) propose a workflow to optimize recording autonomy and recording schedules. From 1992 to 2018, most of the 460 studies applying PAM in terrestrial environments have used a single recor- der per site, covered broad spatial scales and rotated recorders between sites to optimize sampling effort. Continuous recording of specific diel periods was the main recording procedure used. When recording schedules were applied, a larger number of recordings per hour was generally associated with a smaller recording length. For PAM survey design, we proposed to (i) estimate mem- ory/battery autonomy and associated costs, (ii) assess signal detectability to optimize recording schedules in order to recover maximum biological infor- mation and (iii) evaluate cost-benefit scenarios between sampling effort and budget to address potential biases from a given PAM survey design. Establish- ing standards for PAM data collection will improve the quality of inferences over the broad scope of PAM research and promote essential standardization for cross-scale research to understand long-term biodiversity trends in a changing world.</p>
10aacoustic monitoring10aacoustic recorders10arecording schedules10arecording settings10atemporal sampling10awildlife survey1 aSugai, Larissa, Sayuri Mor1 aDesjonquères, Camille1 aSilva, Thiago, Sanna Frei1 aLlusia, Diego1 aPettorelli, Nathalie1 aLecours, Vincent  uhttps://onlinelibrary.wiley.com/doi/abs/10.1002/rse2.131https://onlinelibrary.wiley.com/doi/pdf/10.1002/rse2.131https://onlinelibrary.wiley.com/doi/pdf/10.1002/rse2.131https://onlinelibrary.wiley.com/doi/full-xml/10.1002/rse2.131