PRESENCE - Estimates patch occupancy rates and related parameters. This work is in collaboration with Darryl MacKenzie, and is largely funded by the Amphibian Research and Monitoring Initiative (ARMI). Contact Darryl if you would like to learn more about this project.

Current Version: 12.32

RPresence - Provides an R interface for running occupancy models available in Program PRESENCE plus some additional helpful routines.

GENPRES - Generates patch occupancy data and analyzes using program PRESENCE.

OccPower.xlsx - Spreadsheet to compute power to detect difference in 2 independent occupancy estimates using asymptotic approximations described in Guillera-Arroita et. al. (2012).

References

book cover image MacKenzie, D. I., J. D. Nichols, J. A. Royle, K. H. Pollock, L.L. Bailey, and J. E. Hines. 2018. Occupancy Estimation and Modeling - Inferring Patterns and Dynamics of Species Occurrence. 2nd Edition. Elsevier Publishing.

ecology image MacKenzie, D. I., J. D. Nichols, G. B. Lachman, S. Droege, J. A. Royle and C. A. Langtimm. 2002. Estimating site occupancy rates when detection probabilities are less than one. Ecology 83(8): 2248-2255 ecology image MacKenzie, D. I., J. D. Nichols, J. E. Hines, M. G. Knutson and A. B. Franklin. 2003. Estimating site occupancy, colonization and local extinction probabilities when a species is detected imperfectly. Ecology 84(8) 2200-2207.
ecological Applications image Bailey, L. L., J.D. Nichols and J.E. Hines. 2007. Exploring Sampling Design Trade-Offs In Occupancy Studies With imperfect detection: examples and software. Ecological Applications, 17(1). pp. 281-290. methods in ecology and evolution image Guillera-Arroita, G. and J.J. Lahoz-Monfort. 2012. Designing studies to detect differences in species occupancy: power analysis under imperfect detection. Methods in Ecology and Evolution 2012, 3, 860-869.

Documentation

view user manual buttonPRESENCE user-manual

view user manual buttonWorked Examples and Exercises in PRESENCE

view user manual buttonGENPRES user-manual

Downloads

Current Version: 12.32
PRESENCE (includes GenPres) (last modified:)
PRESENCE (includes GenPres, no install/setup program) (last modified:)
RPresence binary package for Windows (last modified:)
RPresence source package for OSX/Linux (last modified:)
OccPower.xlsx (last modified:)

Recent Modifications

Ver 12.32 (11Jul2019) = fix bug output of p for missing data
Ver 12.31 (21May2019) = fix bug dynamic 2sp output (gamma)
Ver 12.29 (15Apr2019) = fix bug in gof test
Ver 12.28 (09Apr2019) = fix import func in RPresence, add multi-threading in Presence
Ver 12.26 (16Mar2019) - fix bugs mod-avg, import-proj

PRESENCE workshops

Information about upcoming workshops on the use of Occupancy modeling using PRESENCE can be found
here.