Adjusting for undercoverage of access-points in creel surveys with fewer overflights
| Autor: | Richard A. Lockhart, Steven K. Arndt, Audrey Béliveau, Carl J. Schwarz |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Statistics and Probability General Immunology and Microbiology Operations research Aerial survey 010604 marine biology & hydrobiology Applied Mathematics Fishing Estimator Sample (statistics) General Medicine 01 natural sciences Ground survey General Biochemistry Genetics and Molecular Biology 010104 statistics & probability Geography Optimal allocation TRIPS architecture 14. Life underwater 0101 mathematics General Agricultural and Biological Sciences Estimation methods |
| Zdroj: | Biometrics. 71:1050-1059 |
| ISSN: | 0006-341X |
| Popis: | Summary Creel surveys are used in recreational fisheries to estimate angling effort, catch, and harvest. Aerial-access creel surveys rely on two components: (1) a ground component in which fishing parties returning from their trips are interviewed at some access-points of the fishery; (2) an aerial component in which the number of fishing parties is counted. A common practice is to sample fewer aerial survey days than ground survey days. This is thought by practitioners to reduce the cost of the survey, but there is a lack of sound statistical methodology for this case. In this article, we propose various estimation methods to handle this situation and evaluate their asymptotic properties from a design-based perspective. We also propose formulas for the optimal allocation of the effort between the ground and the aerial portion of the survey, for given costs and budget. A simulation study investigates the performance of the estimators. Finally, we apply our methods to data from an annual Kootenay Lake survey (Canada). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|