# Estimating density of mountain hares using distance sampling: a comparison of daylight visual surveys, night-time thermal imaging and camera traps

## Cite this dataset

Bedson, Carlos (2021). Estimating density of mountain hares using distance sampling: a comparison of daylight visual surveys, night-time thermal imaging and camera traps [Dataset]. Dryad. https://doi.org/10.5061/dryad.3r2280gg0

## Usage notes

META DATA DESCRIPTIONS

_____DAYLIGHT VISUAL SAMPLING_____

STUDY AREA = HOLME MOSS for all sites

SITE = Sites within the study, numbered 1 through 6 as per the manuscript.

AREA KM^2 = 8.17KM^2 per site square which sums to 49 KM^2 for the whole area of Holme Moss.

LINE_LENGTH _KM  = Per site what distance was walked in kilometres.

PERP_DISTANCE_M = Perpendicular distance to the transect line in metres.

CLUSTER_SIZE = How many mountain hares were observed.

_____NIGHT-TIME THERMAL IMAGING_____

STUDY AREA = HOLME MOSS for all sites

SITE = Sites within the study, numbered 1 through 6 as per the manuscript.

AREA KM^2 = 8.17KM^2 per site square which sums to 49 KM^2 for the whole area of Holme Moss.

OBSERVATION POINT = Unique ID for each vantage point.  Some of these received multiple visits so appear several times.

SURVEY_EFFORT = 1 per vantage point.

CLUSTER_SIZE = How many mountain hares were observed.

_____CAMERA TRAPS_____

STUDY AREA = HOLME MOSS for all sites

SITE = Sites within the study, numbered 1 through 6 as per the manuscript.

AREA KM^2 = 8.17KM^2 per site square which sums to 49KM^2 for the whole area of Holme Moss.

CAM_ID = Unique ID for each camera trap.  These are "point transect labels" for software distance.

SURVEY_EFFORT_SECONDS = Expressed with "1k" i.e. one second is the effort unit.  The value shown is the sum of the effort units for each individual camera i.e. the total number of seconds the camera was deployed for.

CLUSTER_SIZE = How many mountain hares were observed.

## Funding

People's Trust for Endangered Species

Hare Preservation Trust

Penny Anderson Associates

Queen's University Belfast

British Mountaineering Council

Action for Hares South West