Evaluating differences in density estimation for central Iowa butterflies using two methodologies.

ABSTRACT: The Pollard-Yates transect is a widely used method for sampling butterflies. Data from these traditional transects are analyzed to produce density estimates, which are then used to make inferences about population status or trends. A key assumption of the Pollard-Yates transect is that detection probability is 1.0, or constant but unknown, out to a fixed distance (generally 2.5 m on either side of a transect line). However, species-specific estimates of detection probability would allow for sampling at farther distances, resulting in more detections of individuals. Our objectives were to (1) evaluate butterfly density estimates derived from Pollard-Yates line transects and distance sampling, (2) estimate how detection probabilities for butterflies vary across sampling distances and butterf

SUBMITTER: Patterson S 

PROVIDER: S-EPMC10569161 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature