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    Consequences of Treating Wyoming Big Sagebrush to Enhance Wildlife Habitats

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    Author
    Beck, Jeffrey L.
    Connelly, John W.
    Wambolt, Carl L.
    Issue Date
    2012-09-01
    Keywords
    Artemisia tridentata wyomingensis
    elk
    greater sage-grouse
    herbicide applications
    mechanical treatments
    mule deer
    prescribed burning
    pronghorn
    
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    Citation
    Beck, J. L., Connelly, J. W., & Wambolt, C. L. (2012). Consequences of treating Wyoming big sagebrush to enhance wildlife habitats. Rangeland Ecology & Management, 65(5), 444-455.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/642654
    DOI
    10.2111/REM-D-10-00123.1
    Additional Links
    https://rangelands.org/
    Abstract
    Sagebrush (Artemisia L.) taxa historically functioned as the keystone species on 1 090 000 km2 of rangeland across the western United States, and Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis Beetle and Young) is or was dominant on a substantial amount of this landscape. Wyoming big sagebrush provides habitat for numerous wildlife species. Nevertheless,Wyoming big sagebrush communities are commonly manipulated to decrease shrub cover and density and increase the productivity and diversity of herbaceous plants. We examined relationships between management-directed changes in Wyoming big sagebrush and greater sage-grouse (Centrocercus urophasianus), elk (Cervus elaphus), pronghorn (Antilocapra americana), and mule deer (Odocoileushemionus), species commonly associated with these ecosystems. We focused on herbicide applications, mechanical treatments, and prescribed burning, because they are commonly applied to large areas in big sagebrush communities, often with the goal to improve wildlife habitats. Specifically, our objective was to identify treatments that either enhance or imperil sagebrush habitats for these wildlife species. The preponderance of literature indicates that habitat management programs that emphasize treating Wyoming big sagebrush are not supported with respect to positive responses by sage-grouse habitats or populations. There is less empirical information on ungulate habitat response to Wyoming big sagebrush treatments, but the value of sagebrush as cover and food to these species is clearly documented. A few studies suggest small-scale treatments (<60-m width) in mountain big sagebrush (Artemisiatridentata ssp. vaseyana [Rydb.] Beetle) may create attractive foraging conditions for brooding sage-grouse, but these may have little relevance to Wyoming big sagebrush. Recommendations or management programs that emphasize treatments to reduce Wyoming big sagebrush could lead to declines of wildlife species. More research is needed to evaluate the response of sagebrush wildlife habitats and populations to treatments, and until that time, managers should refrain from applying them in Wyoming big sagebrush communities./Sagebrush (Artemisia L.) históricamente ha funcionado como un especie clave en 1 090 000 km2 de pastizales a través del oeste de los Estados Unidos y Wyoming big sagebrush (A. tridentata Nutt. Ssp. Wyomingensis Beetle and Young) es o fue dominante en una granárea de este paisaje. En Wyoming big sagebrush provee hábitat para una gran cantidad de especies de fauna silvestre. Sin embargo, en Wyoming las comunidades de big sagebrush son comúnmente manipuladas para disminuir su cobertura y densidad para incrementarla productividad y diversidad de plantas herbáceas. Se examinó la relación entre los cambios debidos al manejo dirigido en Wyoming big sagebrush y las especies de sage-grouse (Centrocercus urophasianus), elk (Cervus elaphus), berrendo (Antilocapra americana) y venado mula (Odocoileus hemionus), comúnmente asociadas con estos ecosistemas. Nos enfocamos en la aplicación de herbicidas, tratamientos mecánicos, y fuego prescrito, ya que ellos son se aplican comúnmente en áreas extensas de comunidades de big sagebrush, frecuentemente con la meta de mejorar el hábitat para fauna silvestre. Específicamente, nuestro objetivo fue identificar los tratamientos que mejoran o ponen en riesgo los hábitats de sagebrush para estas especies silvestres. La preferencia de la literatura indica que los programas de manejo de hábitat que enfatizan el tratamiento de big sagebrush en Wyoming no están apoyados con respecto a las respuestas positivas por los hábitats o poblaciones de sage-grouse. Existe información menos empírica acerca de la respuesta del hábitat de ungulados a los tratamientos de Wyoming big sagebrush, pero el valor de sagebrush como fuente de coberturay alimentación para estas especies está claramente documentada. Pocos estudios sugieren tratamientos a pequeña escala ( <60 mancho) en mountain big sagebrush (A. t. ssp. Vaseyana [Rydb.] Beetle) podrían crear condiciones atractivas forrajeras para el anidamiento de sage-grouse, pero éstas podrían tener poca relevancia para Wyoming big sagebrush. Recomendaciones o programas de manejo que enfoquen sus tratamientos en la reducción de Wyoming big sagebrush podrían conducir a la reducción de especies silvestres. Más investigación es necesaria para evaluar en mejor manera la respuesta de los hábitats de sagebrush para fauna silvestre y sus poblaciones a estos tratamientos y hasta entonces, manejadores deben abstenerse de aplicarlas en las comunidades de big sagebrush en Wyoming.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/REM-D-10-00123.1
    Scopus Count
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    Rangeland Ecology & Management, Volume 65, Number 5 (September 2012)

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