10.5061/DRYAD.80GB5MKRW
Picardi, Simona
0000-0002-2623-6623
Utah State University
Coates, Peter
United States Geological Survey
Kolar, Jesse
0000-0002-7777-7833
North Dakota Game and Fish Department
O'Neil, Shawn
United States Geological Survey
Mathews, Steven
United States Geological Survey
Dahlgren, David
Utah State University
Data for behavioral state-dependent habitat selection analysis of
translocated female greater sage-grouse, North Dakota 2018-2020
Dryad
dataset
2021
2021-11-12T00:00:00Z
2021-11-12T00:00:00Z
en
https://github.com/picardis/bsdhs
85035326 bytes
4
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
This dataset is associated with the article, "Behavioral
state-dependent habitat selection and implications for animal
translocations" (Picardi et al., 2021, Journal of Applied Ecology).
Post-release monitoring of translocated animals can be used to inform
future translocation protocols. In particular, quantifying habitat
selection of translocated individuals may help identify features that
characterize suitable settlement habitat and inform the choice of future
release sites; however, because translocated animals undergo post-release
behavioral modification, the underlying behavioral state needs to be taken
into account. We analyzed behavioral state-dependent habitat selection in
female greater sage-grouse (Centrocercus urophasianus) translocated from
Wyoming to North Dakota, USA, using Hidden Markov Models in combination
with Integrated Step Selection Analysis. This dataset includes GPS tracks
(resampled at a 6-hour resolution using a Continuous Time Movement Model)
for 48 individuals translocated between 2018 and 2020, along with
environmental variables associated with each location. We segmented each
track into behavioral phases corresponding to an exploratory state,
characterized by broad and directed movements, and a restricted state,
characterized by short and tortuous movements. Then, we quantified habitat
selection in each state while also accounting for seasonality and
individual reproductive status. Habitat selection of translocated
sage-grouse differed between the post-release exploration and the
settlement phase. While in the exploratory state, sage-grouse exhibited
natal habitat preference induction by selecting for high sagebrush cover,
typical of their natal area but not of the release area. In the restricted
state, sage-grouse selected for gentle topography and also adjusted their
habitat selection based on the season and their reproductive needs.
We equipped 48 female 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 resampled the data at regular 6-hour intervals
using a Continuous Time Movement Model. For the first part of the
analysis, we segmented the tracks into behavioral phases (corresponding to
either an exploratory or a restricted state) using a Hidden Markov Model.
For the second part of the analysis, we fit Integrated Step Selection
models to individuals in each behavioral state. 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 in the
two behavioral states. We intersected each step with environmental
covariates including aspect, percent sagebrush cover, percent herbaceous
cover, sagebrush patch contiguity, slope, distance to roads, distance to
well pads, and distance to mesic habitat. All habitat variables are scaled
and centered. We removed geographical coordinates to fulfill our funding
agreements not to disclose the location of our tracked individuals. We
processed data in R (R Core Team, 2020) using the packages ‘amt’,
‘tidyverse’, ‘sf’, ‘raster’, and ‘lubridate’. For more details, see the
associated manuscript (Picardi et al. 2021, Journal of Applied Ecology).
This dataset contains three objects: 1.
Picardi-et-al_JApplEcol_HMM-Data.rds contains the tracks we used in input
to the Hidden Markov Model for behavioral segmentation; 2.
Picardi-et-al_JApplEcol_iSSA-Data-State1.rds contains steps that were
classified as "restricted state" by the Hidden Markov Model. We
sampled 100 random steps per used step and associated each step with
environmental predictors described in the manuscript. We used these data
in input to the Integrated Step Selection Analysis.
3. Picardi-et-al_JApplEcol_iSSA-Data-State2.rds contains steps that were
classified as "exploratory state" by the Hidden Markov Model. We
sampled 100 random steps per used step and associated each step with
environmental predictors described in the manuscript. We used these data
in input to the Integrated Step Selection Analysis. FILE
Picardi-et-al_JApplEcol_HMM-Data.rds Object type: data.frame Fields:
"ID": individual identifier "hen_name": name assigned
to each individual "step": step length (m) "angle":
turning angle (radians) "timestamp": date and time the location
was acquired "with_brood": boolean variable describing whether
the female had a brood at that time (1 if with brood, 0 if without brood
because the female didn't reproduce, the brood fledged, or the brood
died) "status": status of the female at the time of release (PNH
= pre-nesting hen; NBH = non-brood hen; TBH = brood hen) "dst":
days since translocation "dst_scaled": days since translocation,
scaled and centered FILES Picardi-et-al_JApplEcol_iSSA-Data-State1.rds
& Picardi-et-al_JApplEcol_iSSA-Data-State2.rds Object type: nested
data.frame Fields: "hen_name": name assigned to each individual
"rsteps": tibble of data for each individual Fields within
"rsteps": "ID": individual identifier "t1_":
timestamp of the location at which the step begins "t2_":
timestamp of the location at which the step ends "dt_": duration
of the step "step_id_": incremental number identifying the steps
"case_": boolean variable defining whether the step is used
(TRUE) or random (FALSE) "sl_": step length (m) "ta_":
turning angle (radians) "cos_ta_": cosine of the turning angle
"log_sl_": logarithm of the step length "status":
status of the female at the time of release (PNH = pre-nesting hen; NBH =
non-brood hen; TBH = brood hen) "with_brood": boolean variable
describing whether the female had a brood at that time (1 if with brood, 0
if without brood because the female didn't reproduce, the brood
fledged, or the brood died) "state": behavioral state assigned
via the Viterbi algorithm based on the fitted Hidden Markov Model (1 =
restricted, 2 = exploratory) "dist_to_mesic_log_scaled":
logarithm of the distance to mesic habitat (scaled and centered)
"dist_to_roads_log_scaled": logarithm of the distance to roads
(scaled and centered) "dist_to_well_pads_log_scaled": logarithm
of the distance to well pads (scaled and centered)
"sagebrush_scaled": percent sagebrush cover (scaled and
centered) "perennial_herb_scaled": percent perennial herbaceous
cover (scaled and centered) "sage_contig_scaled": sagebrush
patch contiguity (scaled and centered) "slope_scaled": slope
(scaled and centered) "asp_sin": sine of the aspect
"asp_cos": cosine of the aspect