Empirical investigation about statistical properties of abundance estimates based on line-intercept and network sampling of tracks
- 41 Downloads
Line-intercept sampling (Becker, 1991) and network sampling (Becker et al., 1998) seem to be the most appropriate procedures for estimating animal abundance in a study area on the basis of tracks. The purpose of this paper is to investigate the statistical properties of these alternative procedures by constructing confidence intervals for abundance and comparing the interval performances in terms of width and coverage.
Key wordsAbundance estimation line-intercept sampling network sampling variance estimation asymptotic distribution confidence intervals
Unable to display preview. Download preview PDF.
- Becker EF (1991) A terrestrial furbearer estimator based on probability sampling. J. Wildl. Manage.55: 730–737Google Scholar
- Becker EF, Spindler MA, Osborne TO (1998) A population estimator based on network sampling of tracks in the snow. J. Wildl. Manage.62: 968–977Google Scholar
- Thompson SK (1992) Sampling, Wiley, New YorkGoogle Scholar
- Tyson EL, (1952) Estimating deer populations from tracks, 62-th Annual Conference, South Eastern Association of Game and Fish Committee, October 19–22 Savannah, GAGoogle Scholar