10.5061/DRYAD.44J0ZPCF5
Picardi, Simona
0000-0002-2623-6623
Utah State University
Data for Integrated Step Selection Analysis of translocated female greater
sage-grouse in the 60 days post-release, North Dakota 2018-2020
Dryad
dataset
2021
Ecology
North Dakota Game and Fish Department*
Wyoming Game and Fish Department*
North Dakota Game and Fish Department
Wyoming Game and Fish Department
2021-09-12T00:00:00Z
2021-09-12T00:00:00Z
en
https://github.com/picardis/picardi-et-al_2021_sage-grouse_frontiers-in-conservation
85136550 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The data include used and random available steps at 11-hour resolution
generated for 26 female greater sage-grouse in the 60 days
post-translocation to North Dakota, with associated environmental
predictors and individual information. The code fits individual habitat
selection models in an Integrated Step Selection Analysis framework. Data
used to fit the models described in: Picardi, S., Ranc, N., Smith, B.J.,
Coates, P.S., Mathews, S.R., Dahlgren, D.K. Individual variation in
temporal dynamics of post-release habitat selection. Frontiers in
Conservation Science (in review) Code used to implement the analysis is
available on
GitHub: https://github.com/picardis/picardi-et-al_2021_sage-grouse_frontiers-in-conservation
We equipped sage-grouse with rump-mounted Global Positioning System (GPS)
Platform Transmitter Terminal (PTT) ARGOS-enabled tracking devices (23 g,
GeoTrak, Inc.) scheduled to acquire 6 locations a day at irregular
intervals. We only retained 11-hour steps within the first 60 days
post-release for further analysis. For each used step, we generated a set
of 100 random steps drawn from the empirical population-level distribution
of steps lengths and turning angles (gamma with shape = 0.72 and scale =
725.04; von Mises with mean = 0.00 and concentration = 0.10). We
intersected each step with environmental covariates including percent
sagebrush cover, percent herbaceous cover, slope, and distance to roads.
We obtained percent sagebrush and herbaceous cover data at a 30-m
resolution from the National Land Cover Database (NLCD 2016;
https://www.mrlc.gov/national-land-cover-database-nlcd-2016). We obtained
data on slope at a 30-m resolution from Landfire (https://landfire.gov/).
We obtained data on roads from the USGS National Transportation Dataset
(USGS 2014), including paved roads, highways, and interstates as well as
gravel or dirt roads. We rasterized the roads vector layer to a 30-m
resolution and calculated distance of each pixel to the nearest road. We
log-transformed distance values to allow for a spatial decay in the
behavioral response to roads. All habitat variables are scaled and
centered. Data processing was conducted in R (R Core Team, 2020) using the
packages ‘amt’, ‘tidyverse’, ‘sf’, ‘raster’, and ‘lubridate’.
Fields: "hen_name": individual identifier "status":
individual reproductive status; brood-rearing (TBH) or non-brood-rearing
(NBH) "step_id_": serial number to uniquely identify
steps "case_": Boolean indicating whether the
step is used (TRUE) or available (i.e., random; FALSE)
"t1_": timestamp at the beginning of the
step "t2_": timestamp at the end of the
step "dt_": duration of the step
(h) "sl_": step length
(m) "ta_": turning angle
(degrees) "cos_ta_": cosine of the turning
angle "log_sl_": logarithm of the step
length "slope_scaled": value of slope (degrees;
scaled and centered) "dist_to_roads_log_scaled":
value of distance to nearest road (m; scaled and centered)
"sagebrush_scaled": value of sagebrush cover (percent; scaled
and centered) "perennial_herb_scaled": value of perennial
herbaceous cover (percent; scaled and centered) "dst": days
since translocation "log_dst": logarithm of
days since translocation