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| Format: | Recurso digital |
| Language: | English |
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2021
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| Online Access: | https://doi.org/10.5281/zenodo.16413160 |
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| _version_ | 1866901284871733248 |
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| author | Etchart, JE |
| author_facet | Etchart, JE |
| contents | As desert bighorn sheep (Ovis canadensis ssp.) restoration continues in Texas, desert bighornsheep are potentially threatened by the distribution and population increase of aoudad(Ammotragus lervia). In January 2014, desert bighorn sheep were transplanted from the Elephant Mountain Wildlife Management Area (n = 61) to the Sierra Vieja Mountains. Using camera traps, I monitored the use of wildlife water developments by desert bighorn sheep and aoudad between March 2014 through February 2017. A total of 2 7 wildlife species were identified utilizing artificial water sources. Desert bighorn sheep accounted for 0.84% (n = 301 photos) of independent events, ranking tenth amongst 28 species documented utilizing the water sources.Peak use occurred in the summer months (May and June), and the peak time of day use was at 1300-1400 hrs (n = 27 photos). Aoudad accounted for 16.09% (3,064 photos) of independent events visiting the water sources. Aoudad ranked second amongst the 28 species documentedutilizing the water sources, with peak use occurring in October (n = 47 photos), September (n = 220 photos), and April (n = 278 photos) of 2014, 2015, and 2016, respectively. Peak waterutilization by aoudad occurred at 1900-2000 hrs (n = 389 photos). In September 2015, 8 aoudad ewes were captured and fitted with GPS collarswithin the Sierra Vieja mountain range to compare seasonal ranges between 11 translocated desert bighorn ewes. The average 95% utilization distribution (UD) for desert bighorn sheep was 27.28 km2 (sd = 26.63 km2), 38.09 km2 (sd = 29.01 km2), and 39.85 km2; (sd = 26.19 km2) for cool, warm-dry, and warm-wet seasons. The aoudad seasonal ranges were 12.71 km2 (sd = 7.79 km2), 17.10 km2 (sd = 5.98 km2) and 24.94 km2 (sd = 27.25 km2) for cool, warm-dry, and warm-wet seasons. Seasonal ranges of desert bighorn ewes were larger than aoudad ewe ranges. These results suggest management of artificial water sources in the summer months of the year can benefit desert bighorn sheep, and seasonal ranges on desert bighorn sheep increase in an area where aoudad is present. |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_16413160 |
| institution | Zenodo |
| language | eng |
| publishDate | 2021 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Evaluating Water Use and Seasonal Ranges of Desert Bighorn Sheep and Aoudad in the Sierra Vieja Mountains, Texas Etchart, JE As desert bighorn sheep (Ovis canadensis ssp.) restoration continues in Texas, desert bighornsheep are potentially threatened by the distribution and population increase of aoudad(Ammotragus lervia). In January 2014, desert bighorn sheep were transplanted from the Elephant Mountain Wildlife Management Area (n = 61) to the Sierra Vieja Mountains. Using camera traps, I monitored the use of wildlife water developments by desert bighorn sheep and aoudad between March 2014 through February 2017. A total of 2 7 wildlife species were identified utilizing artificial water sources. Desert bighorn sheep accounted for 0.84% (n = 301 photos) of independent events, ranking tenth amongst 28 species documented utilizing the water sources.Peak use occurred in the summer months (May and June), and the peak time of day use was at 1300-1400 hrs (n = 27 photos). Aoudad accounted for 16.09% (3,064 photos) of independent events visiting the water sources. Aoudad ranked second amongst the 28 species documentedutilizing the water sources, with peak use occurring in October (n = 47 photos), September (n = 220 photos), and April (n = 278 photos) of 2014, 2015, and 2016, respectively. Peak waterutilization by aoudad occurred at 1900-2000 hrs (n = 389 photos). In September 2015, 8 aoudad ewes were captured and fitted with GPS collarswithin the Sierra Vieja mountain range to compare seasonal ranges between 11 translocated desert bighorn ewes. The average 95% utilization distribution (UD) for desert bighorn sheep was 27.28 km2 (sd = 26.63 km2), 38.09 km2 (sd = 29.01 km2), and 39.85 km2; (sd = 26.19 km2) for cool, warm-dry, and warm-wet seasons. The aoudad seasonal ranges were 12.71 km2 (sd = 7.79 km2), 17.10 km2 (sd = 5.98 km2) and 24.94 km2 (sd = 27.25 km2) for cool, warm-dry, and warm-wet seasons. Seasonal ranges of desert bighorn ewes were larger than aoudad ewe ranges. These results suggest management of artificial water sources in the summer months of the year can benefit desert bighorn sheep, and seasonal ranges on desert bighorn sheep increase in an area where aoudad is present. |
| title | Evaluating Water Use and Seasonal Ranges of Desert Bighorn Sheep and Aoudad in the Sierra Vieja Mountains, Texas |
| url | https://doi.org/10.5281/zenodo.16413160 |