Short-term space-use patterns of translocated Mojave desert tortoise in southern California

Matthew L. Farnsworth, Brett G Dickson, Luke J. Zachmann, Ericka E. Hegeman, Amanda R. Cangelosi, Thomas G. Jackson, Amanda F. Scheib

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Increasingly, renewable energy comprises a larger share of global energy production. Across the western United States, public lands are being developed to support renewable energy production. Where there are conflicts with threatened or endangered species, trans-location can be used in an attempt to mitigate negative effects. For the threatened Mojave desert tortoise (Gopherus agassizii), we sought to compare habitat- and space-use patterns between short-distance translocated, resident, and control groups. We tested for differences in home range size based on utilization distributions and used linear mixed-effects models to compare space-use intensity, while controlling for demographic and environmental variables. In addition, we examined mean movement distances as well as home range overlap between years and for male and female tortoises in each study group. During the first active season post-translocation, home range size was greater and space-use intensity was lower for translocated tortoises than resident and control groups. These patterns were not present in the second season. In both years, there was no difference in home range size or space-use intensity between control and resident groups. Translocation typically resulted in one active season of questing followed by a second active season characterized by space-use patterns that were indistinguishable from control tortoises. Across both years, the number of times a tortoise was found in a burrow was positively related to greater space-use intensity. Minimizing the time required for translocated tortoises to exhibit patterns similar to non-translocated individuals may have strong implications for conservation by reducing exposure to adverse environmental conditions and predation. With ongoing development, our results can be used to guide future efforts aimed at understanding how translocation strategies influence patterns of animal space use.

Original languageEnglish (US)
Article numbere0134250
JournalPLoS One
Volume10
Issue number9
DOIs
StatePublished - Sep 9 2015
Externally publishedYes

Fingerprint

Gopherus agassizii
Mojave Desert
Turtles
tortoises
Homing Behavior
Renewable Energy
renewable energy sources
Endangered Species
Control Groups
environmental factors
public lands
Western United States
chromosome translocation
Conservation
threatened species
Animals
burrows
endangered species
demographic statistics
Ecosystem

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Farnsworth, M. L., Dickson, B. G., Zachmann, L. J., Hegeman, E. E., Cangelosi, A. R., Jackson, T. G., & Scheib, A. F. (2015). Short-term space-use patterns of translocated Mojave desert tortoise in southern California. PLoS One, 10(9), [e0134250]. https://doi.org/10.1371/journal.pone.0134250

Short-term space-use patterns of translocated Mojave desert tortoise in southern California. / Farnsworth, Matthew L.; Dickson, Brett G; Zachmann, Luke J.; Hegeman, Ericka E.; Cangelosi, Amanda R.; Jackson, Thomas G.; Scheib, Amanda F.

In: PLoS One, Vol. 10, No. 9, e0134250, 09.09.2015.

Research output: Contribution to journalArticle

Farnsworth, ML, Dickson, BG, Zachmann, LJ, Hegeman, EE, Cangelosi, AR, Jackson, TG & Scheib, AF 2015, 'Short-term space-use patterns of translocated Mojave desert tortoise in southern California', PLoS One, vol. 10, no. 9, e0134250. https://doi.org/10.1371/journal.pone.0134250
Farnsworth ML, Dickson BG, Zachmann LJ, Hegeman EE, Cangelosi AR, Jackson TG et al. Short-term space-use patterns of translocated Mojave desert tortoise in southern California. PLoS One. 2015 Sep 9;10(9). e0134250. https://doi.org/10.1371/journal.pone.0134250
Farnsworth, Matthew L. ; Dickson, Brett G ; Zachmann, Luke J. ; Hegeman, Ericka E. ; Cangelosi, Amanda R. ; Jackson, Thomas G. ; Scheib, Amanda F. / Short-term space-use patterns of translocated Mojave desert tortoise in southern California. In: PLoS One. 2015 ; Vol. 10, No. 9.
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