Data from: Pairing field methods to improve inference in wildlife surveys while accommodating detection covariance

Clare J, McKinney ST, DePue JE, Loftin CS

Date Published: May 22, 2017

DOI: https://doi.org/10.5061/dryad.4mt00

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Title Fisher Detections
Downloaded 1 time
Description The binary detection history of fisher via camera at non-invasive detection stations. Fisher detections were used as a covariate for the probability of falsely detecting American marten; the dimensions of the file represent the number of detection stations (238 rows) and the maximum number of sampling occasions (9 columns) for any given station; 0 indicates no fisher detection, 1 indicates fisher detection, and NA indicates the station was not active for a particular check.
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Title MartenOccupancyEncounters
Downloaded 1 time
Description Encounter history for American martens at 238 detection stations in Maine, used to model marten occurrence. Rows represent unique stations (238), columns represent sampling occasions (maximum of 9). Cell values correspond to detection outcomes: 1 indicates a marten was detected by a camera only, 2 indicates a marten was detected via snow-tracking, 3 indicates that both a camera image and marten snow tracks were observed, and 4 indicates no marten detection.
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Title Detection Station Locations
Downloaded 2 times
Description This file provides the x and y coordinates of 238 detection stations used to survey American marten in Maine, USA. Units are UTM/1000 (thus, km units); original projection of the data was UTM Zone 19N.
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Title Detection Station Activity History
Downloaded 3 times
Description The detection station activity history used for Spatial Capture-Recapture modeling of American marten density. 238 rows correspond to distinct station, with 22 total checks corresponding to columns. Cell values of 1 indicate that a detection station was active during a specific check period, and cell values of 0 indicate it was not active.
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Title Marten site covariates, occupancy models
Downloaded 2 times
Description Two site covariates used for occupancy modeling. each row corresponds to 1 of 238 detection stations: "Early" is a binary variable indicating whether a station was active during early winter (Jan. & Feb.), "MNEVC" corresponds to the z-standardized proportion of existing Tree vegetation cover within a 1km buffer surrounding the detection station location.
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Title Individual Marten Captures
Downloaded 4 times
Description Individual marten encounter history used for Spatial Capture-recapture modeling of marten density in 'flat format': data must be coerced to a 3-dimensional array for model fitting using the BUGS language. Individual represents the identity of the marten encountered, trap represents the trap number at which the individual was encountered, check corresponds to the check # during which the individual marten was detected at the specific detection station, and detection type corresponds to the type of detection: 2 represents detection by camera only, 3 represents detection by non-invasive genetic sampling only, and 4 represents detection by both camera and non-invasive genetic sampling.
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When using this data, please cite the original publication:

Clare J, McKinney ST, DePue JE, Loftin CS (2017) Pairing field methods to improve inference in wildlife surveys while accommodating detection covariance. Ecological Applications 27(7): 2031-2047. https://doi.org/10.1002/eap.1587

Additionally, please cite the Dryad data package:

Clare J, McKinney ST, DePue JE, Loftin CS (2017) Data from: Pairing field methods to improve inference in wildlife surveys while accommodating detection covariance. Dryad Digital Repository. https://doi.org/10.5061/dryad.4mt00
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