sExtinct-package: sExtinct

In sExtinct: Calculates the historic date of extinction given a series of sighting events

Description

sExtinct combines several sighting based estimators of historical extinction.

Details

Package:	sExtinct
Type:	Package
Version:	1.1
Date:	2012-10-25
License:	GPL-2 | GPL-3

This package brings together several sighting-based estimators of species loss. These estimators use historical sighting events to calculate the probability of a species persistance. The esitimators can be run simultaneously (using run.all), or individually (see help files). Care should be taken if using low level functions (functions ending in .fun). New users should use intermediate level functions (Robson1964, Solow1993.eq2, OLE) which correct data before running the estimators.

This is a work in progress, and additional estimators are sought. Please contact author (see below).

Author(s)

Package written by Christopher Clements <[e-mail]>.

Code for functions was contributed by:

Ben Collen

Gene Hunt

Tracy Rout

Additional code take from the Appendix of McPherson & Myers (2009)

References

Burgman, M. A., Grimson, R. C., & Ferson, S. (1995). Inferring Threat from Scientific Collections. Conservation Biology, 9(4), 923-928.

Roberts, D. L., & Solow, A. R. (2003). Flightless birds: When did the dodo become extinct? Nature, 426(6964), 245.

Robson, D. S., & Whitlock, J. H. (1964). Estimation of a Truncation Point. Biometrika, 31(1/2), 33-39.

Solow. (1993). Inferring extinction from sighting data. Ecology, 74(3), 962-964.

Solow. (2005). Inferring extinction from a sighting record. Mathematical Biosciences, 195(1), 47-55.

Strauss, D., & Sadler, P. M. (1989). Classical confidence intervals and Bayesian probability estimates for ends of local taxon ranges. Mathematical Geology, 21(4), 411-427.

See Also

run.all Robson1964 Solow1993.eq2 OLE

Examples

data(example.data)
run.all(example.data, 0.05, 2012, FALSE, FALSE)

Example output

Loading required package: lattice
           Test Estimate
1           OLE     1935
2       Strauss     1944
3 Solow1993.eq2     1936
4 Solow2005.eq7     1941
5        Robson     1950
6       Burgman     1942

sExtinct documentation built on May 30, 2017, 7:23 a.m.