A new method for the estimation of minimum adult frog density from a large-scale audial survey.

ABSTRACT: Audial surveys of anuran amphibians (frogs, toads and similar) are cost-effective and allow for the coverage of large areas, but they are usually regarded as unsuitable for population size estimations due to imperfect detection. Our study demonstrated a method for obtaining minimum adult population size estimates from vocalising anuran counts by using sex ratios, life history and vocalising behaviour parameters from other studies. We collected data from 2016 to 2018 for seven taxa on 65 plots (each 25 km²) representing the entirety of Latvia. Among taxa, average breeding waterbody audible detection probabilities ranged from 0.56 to 0.88 per plot, minimum adult frog density (MAFD) estimates were from 12.0 to 51.7 individuals per km², but the estimated fraction of popul

SUBMITTER: Ceirans A 

PROVIDER: S-EPMC7248064 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature