Functions to allow fisheries managers to simulate a bus route creel survey
Creel surveys allow fisheries scientists and managers the ability to sample anglers in a fishery and achieve statisticaly-valid estimates of catch rate, harvest rate, and in some cases, fish populations. Depending upon the size of the fishery, creel surveys can be challenging to implement correctly. Further, creel surveys can be costly. Much research has been spent on identifying methods for creel surveys. However, relatively little research time has been spent on answering the question what is the best creel-survey type to implement in my fishery? The package(s) and code contained in this repository include functions to allow fisheries managers the ability to simulate a creel survey with a priori data.
AnglerCreelSurveySimulation from CRAN:
Install the latest (development) version of
AnglerCreelSurveySimulation from GitHub with devtools and the following code:
devtools::install_github("stevenranney/AnglerCreelSurveySimulation", ref = "InProgress")
Additional information: *
catch_rate are estimated from the
gamma distribution * The Bus Route Estimator is used to estimate
effort (Jones and Pollock 2012) * The Ratio of Means is used to estiate
catch (Malvestuto 1996; Jones and Pollock 2012) * Creel surveys can be estimated as a ‘one-off’ or bus route-type surveys (e.g., multiple stops along a route) * Simulations can be run to estimate
>= 1 surveys * Resulting values for estimated catch and estimated effort can be plotted as a function of true catch and true effort to evaluate how accurately the survey reflects reality.
Jones, C. M., and K. H. Pollock. 2012. Recreational survey methods: estimation of effort, harvest, and released catch. Pages 883-919 in A. V. Zale, D. L. Parrish, and T. M. Sutton, editors. Fisheries Techniques, 3rd edition. American Fisheries Society, Bethesda, Maryland.
Malvestuto, S. P. 1996. Sampling the recreational creel. Pages 591-623 in B. R. Murphy and D. W. Willis, editors. Fisheries techniques, 2nd edition. American Fisheries Society, Bethesda, Maryland.