Assessing the Use of Call Surveys to Monitor Breeding Anurans in Rhode Island
115 citations recorded by the source corpus.
Abstract Our objective was to develop a long-term monitoring program that quantified anuran population trends in Rhode Island. Because road-based, manual call surveys are widely used in North America to monitor anurans, we assessed the efficacy of using this method to monitor the impact of anthropogenic change of anuran populations in the state. We quantified interspecific variation in calling chronology, calling frequency, and calling intensity at 31 breeding ponds in southern Rhode Island in 1998. Four distinct sampling periods were needed to monitor the seven species we detected. During a species' peak sampling period, males of some species called only sporadically within our 16-min surveys, such as pickerel frogs (Rana palustris), whereas other species called continually [spring peepers (Pseudacris crucifer) and green frogs (Rana clamitans)]. Based on accumulation curves, we suggest that call surveys in Rhode Island be conducted for 10-min at breeding ponds to have a high probability of detecting all species. Assuming we conduct one call survey annually during the four sampling periods, a power analysis estimated that we need to conduct 283 or 690 10-min surveys annually to detect 10% or 5% annual declines, respectively, to monitor most anurans in Rhode Island. Common species that are widespread and call frequently could be monitored with road-based call surveys. However, rarer species or those that call infrequently would be difficult to monitor with call surveys in Rhode Island; therefore other monitoring methods might be more appropriate.
Subfields: Developmental Biology, Ecology, Global and Planetary Change
View Paper: https://www.semanticscholar.org/paper/06b3a563a4f4b69b92509c9fc6fd3f97421870fa
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In Developmental Biology
In Ecology
In Global and Planetary Change
Citations in the corpus
- The amphibian decline crisis: A watershed for conservation biology? (2005, background): “Surveying for male advertisement calls (e.g., Bridges and Dorcas, 2000; Crouch and Paton, 2002) and counting spawn clumps or strings (e.”
- REGIONAL DYNAMICS OF WETLAND‐BREEDING FROGS AND TOADS: TURNOVER AND SYNCHRONY (2003, background): “Crouch and Paton (2002) illustrate many of the critical issues to be considered in designing and interpreting frog call surveys, ranging from setting the length of the listening period to differential detectability of species.”
- Evaluation of methods and data quality from a volunteer-based amphibian call survey (2003, background): “It appears that species that are widespread and call frequently can be adequately monitored with roadside call surveys; species that call infrequently will require more effort (i.e., more routes surveyed) to track meaningful population trends (Crouch and Paton 2002).”
- Effect of sampling effort and species detectability on volunteer based anuran monitoring programs (2005, background): “Crouch and Paton (2002) found that not all anuran species were detected using acoustic surveys, and that four sampling periods were necessary to monitor the seven species that were detected.”
- Monitoring distributions using call surveys: estimating site occupancy, detection probabilities and inferring absence. (2005, background): “However, it cannot replace a thorough knowledge of the natural history, calling behaviour, and phenology of the species (e.g., Shirose et al., 1997; Bridges and Dorcas, 2000; Crouch and Paton, 2002).”