USGS logo PWRC web-site link USGS web-site link
[Link to USGS] [Link to PWRC] [USGS accessibility statement]
Wednesday, April 26, 2017 05:58AM

PRESENCE 11.8 - 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.

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).


book cover image MacKenzie, D. I., J. D. Nichols, J. A. Royle, K. H. Pollock, L.L. Bailey, and J. E. Hines. 2005. Occupancy Estimation and Modeling - Inferring Patterns and Dynamics of Species Occurrence. 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.


view user manual buttonPRESENCE user-manual

view user manual buttonWorked Examples and Exercises in PRESENCE

view user manual buttonGENPRES user-manual