Data from: A mast-seeding desert shrub regulates population dynamics and behavior of its heteromyid dispersers

Auger J, Meyer SE, Jenkins SH

Date Published: March 8, 2016

DOI: http://dx.doi.org/10.5061/dryad.pv608

 

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Title Caching Trials, Willow Flats
Downloaded 9 times
Description Each record represents a single cache made by a kangaroo rat that had collected seeds at a bait tray in the field. Kangaroo rats were allowed to visit the tray multiple times within a trial. Fluorescent powder on the seeds aided the observer in locating the caches. Datum: WGS84
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Title Rodent Trapping, Salt Valley
Downloaded 4 times
Description Each record is a capture of a small mammal at Salt Valley, Arches National Park, Grand Co., Utah. Trapping was conducted in 15 sessions of 2 or 3 nights each.
Download Rodent Trapping, Salt Valley.csv (72.14 Kb)
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Title Rodent Trapping, Willow Flats
Downloaded 2 times
Description Each record is a capture of a small mammal at Willow Flats, Arches National Park, Grand Co., Utah. Trapping was conducted in 11 sessions of 2 or 3 nights each.
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Title Telemetry, Salt Valley
Downloaded 4 times
Description Location records for radiocollared Ord's kangaroo rats in Salt Valley, Arches National Park, Grand Co., Utah.
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Title Telemetry, Willow Flats
Downloaded 6 times
Description Location records for radiocollared Ord's kangaroo rats at Willow Flats, Arches National Park, Grand Co., Utah. Because sample sizes were fairly small, these data were combined with trapping data from the same time period and geographic area to produce utilization distributions for kangaroo rats. Trapping data were drawn from the companion data set "Rodent Trapping, Willow Flats.csv".
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Title Randomization procedure for niche overlap
Downloaded 6 times
Description To investigate possible competition between D. ordii and P. flavescens at Salt Valley, we calculated the observed niche overlap for all species–time period combinations. The 163 trap stations were considered the common resource, and we used the Czechanowski index (Feinsinger et al. 1981) as an estimate of niche overlap: 1.0 – 0.5 Ʃ │pi – ri│ where pi and ri represent the proportions of captures at trap station i for D. ordii and P. flavescens, respectively. We then used a randomization procedure with 1000 trials to generate a distribution of niche overlap matrices to which the observed values could be compared (True BASIC program, S. Jenkins). The procedure generated random numbers of captures at each trapping station for each species-time period combination while keeping fixed the values of (1) the total number of captures at each station over all species-period combinations and (2) the total number of captures for each species-period combination over all stations. We could then answer the question of whether there was more or less between-species niche overlap observed within time periods (1997, 1998, and 1999-2001) than expected by chance by examining the probability of the occurrence of the observed niche overlap values relative to the distribution of values generated by the randomization procedure.
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Title Food Preference Trials
Downloaded 3 times
Description Usable trials in a cafeteria-style design to determine a heirarchy of preference for Ord's kangaroo rats (Dipodomys ordii) selecting to eat 4 seeds which occur at high frequencies in the plant community at Arches National Park, Grand Co., Utah: Coleogyne ramosissima, Ephedra viridis, Cowania mexicana, Wyethia scabra. Compositional analysis was used to determine preference heirarchy.
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Title Home Range Habitat Areas, Salt Valley
Downloaded 6 times
Description Inputs for a test of the resource abundance hypothesis. We used the home range data for the mast year (1997) and the first post-mast year (1998) in separate analyses to examine the correlation between home range area and SMPA (seed mass per unit area). We also examined the effect of year on home range size and SMPA using ANOVA. Data were collected at Arches National Park, Grand Co., Utah.
Download Home Range Habitat Areas, Salt Valley.csv (1.35 Kb)
Download README.rtf (46.13 Kb)
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When using this data, please cite the original publication:

Auger J, Meyer SE, Jenkins SH (2016) A mast-seeding desert shrub regulates population dynamics and behavior of its heteromyid dispersers. Ecology and Evolution 6(8): 2275–2296. http://dx.doi.org/10.1002/ece3.2035

Additionally, please cite the Dryad data package:

Auger J, Meyer SE, Jenkins SH (2016) Data from: A mast-seeding desert shrub regulates population dynamics and behavior of its heteromyid dispersers. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.pv608
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