Data from: Habitat drives dispersal and survival of translocated juvenile desert tortoises

Nafus MG, Esque TC, Averill-Murray RC, Nussear KE, Swaisgood RR

Date Published: September 13, 2016

DOI: http://dx.doi.org/10.5061/dryad.ds8j3

 

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Title Habitat variables associated with survival and dispersal of translocated juvenile desert tortoises
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Description • Recipient site (column B): describes four geographic locations in which tortoises were released: Boulder City Conservation Easement (BCCE), Eldorado Valley (EV), Hidden Valley (HV), and Trout Canyon (TC) with their associated elevations (Column D) and the "release zone" (Column C). • Longevity (column E): describes the number of days that the tortoise survived (if died or went missing) or the number of days the tortoise was monitored (if survived to close of study). • Status at close of study is 0 if animal died, 1 if animal lived, and a - if the animal was lost. Cause of death (column F) is 0 if the animal was found with signs of depredation (e.g. tooth marks, partially consumed carcass) and 1 if the animal was living or dead with no signs of consumption at close of study. • MCL: midline carapace length in mm. • Max Distance (Column J): maximum linear straight line distance a tortoise moved away from its release point before settling into an area reminiscent of a home range. For those tortoises that did not appear to establish a home range before mortality occurred a dash is present. • Wash present (Release): indicates whether the animal was released in a wash (ephemeral river bed) by a 1 or over 2 m from one by a 0. • Proportion wash encounters: frequency with which an animal was found in or within 2 m of a wash across all tracking events during the study period. • Burrow Number (release): total number of usable rodent burrows (entire body of tortoise fits inside with minimal excavation) within a 2 m radius of the release point. • Mean Burrow Number (across year): total number of usable rodent burrows or burrows constructed by the tortoise within 2 m averaged across all tracking events during the monitoring period. • Substrate (release): substrate category ranked between 0 – 5 measuring the prevalence of rocks on the surface as well as the size of the largest rocks present (e.g. small pebbles, or large pebbles and cobble) in the 2 m area surrounding the release point for each individual. In all instances in which larger rocks were present, smaller rocks were also present. • Mean substrate (year): Substrate category within 2 m of the tortoises averaged across all tracing events during the monitoring period.
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When using this data, please cite the original publication:

Nafus MG, Esque TC, Averill-Murray RC, Nussear KE, Swaisgood RR (2016) Habitat drives dispersal and survival of translocated juvenile desert tortoises. Journal of Applied Ecology 54(2): 430-438. http://dx.doi.org/10.1111/1365-2664.12774

Additionally, please cite the Dryad data package:

Nafus MG, Esque TC, Averill-Murray RC, Nussear KE, Swaisgood RR (2016) Data from: Habitat drives dispersal and survival of translocated juvenile desert tortoises. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.ds8j3
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