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    Soil Moisture Enhancement Techniques Aid Shrub Transplant Success in an Arid Shrubland Restoration

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    Author
    Minnick, Tamera J.
    Alward, Richard D.
    Issue Date
    2012-05-01
    Keywords
    big sagebrush
    desert shrubland reclamation
    drought
    hydrogel
    revegetation
    slash
    
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    Citation
    Minnick, T. J., & Alward, R. D. (2012). Soil moisture enhancement techniques aid shrub transplant success in an arid shrubland restoration. Rangeland Ecology & Management, 65(3), 232-240.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/642630
    DOI
    10.2111/REM-D-10-00133.1
    Additional Links
    https://rangelands.org/
    Abstract
    In arid and semi-arid environments, where low and unpredictable rainfall is typical, establishment of perennial vegetation can be enhanced with modest increases in soil moisture. We evaluated methods for promoting shrub transplant establishment. We transplanted approximately 1 000 3-mo-old seedlings in April 2004, 2005, and 2006, using a full-factorial design with combinations of three treatments: addition of mycorrhizae spores to the root zone, addition of a hydrogel to the root zone, and placement of a wood obstruction south of the plant. We planted three shrubs: big sagebrush (Artemisia tridentata Nutt. ssp. tridentate), four wing saltbush (Atriplex canescens [Pursh] Nutt.), and rubber rabbitbrush (Ericameria nauseosa [Pall. ex Pursh] G.L. Nesom Baird ssp. nauseosa) in a 1.2-ha area. The summer months of 2004 and 2006 were dry, leading to low survivorship (<1%). With higher rainfall in summer 2005, transplant survivorship was <18%. For the 2005 transplants, A. tridentata had the highest survivorship after one growing season (31.0%), followed by A. canescens (20.6%) and E. nauseosa (6.9%). Placing a wood obstruction near the plant was significant in the statistical model to describe short-term overall transplant survival and survival of A. tridentata. Placing hydrogel in the root zone also explained short-term overall transplant survival, as well as survival of E. nauseosa. However, by 4.5 yr after transplanting, there was no significant treatment effect on survival. Thus, for transplanting shrub seedlings on arid or semi-arid sites, we recommend some form of resource enhancement technique to increase short-term survival. In this experiment, both the obstruction and hydrogel treatments were effective. We recommend the obstruction treatment since slash is often readily available onsite, has low labor requirements and cost, and it increased transplant survival of A. tridentata, a species of conservation concern; however, other treatments may be appropriate for individual species./En zonas áridas y semiáridas, donde las bajas precipitaciones y la lluvia impredecible son típicas, el establecimiento de la vegetación perenne puede ser mejorado con pequeños incrementos en la humedad del suelo. Se evaluaron métodos para promover el establecimiento de arbustos trasplantados. Se trasplantaron aproximadamente 1 000 plántulas de 3 meses en Abril de 2004,2005, y 2006, usando un diseño completamente factorial con combinaciones de tres tratamientos: adición de esporas de micorrizas en la zona de la raíz, adición de hidrogel en la zona de la raíz, y la colocación de una obstrucción de madera al sur de la planta. Se plantaron tres arbustos: big sagebrush (Artemisia tridentata Nutt. ssp. tridentata), four wing saltbush (Atriplex canescens [Pursh] Nutt.), and rubber rabbitbrush (Ericameria nauseosa [Pall. ex Pursh] G.L. Nesom & Baird ssp. nauseosa) en una área de 1.2 has. Los meses del verano de 2004 y 2006 fueron secos, dando como resultado una sobrevivencia baja (,1%). Con una mayor cantidad de lluvia en el verano del 2005 la sobrevivencia de los trasplantes fue,18%. Para los trasplantes de 2005 A. tridentate presentó la mayor sobrevivencia después de la época de crecimiento (31.0%) seguido por A. canescens (20.6%) y E. nauseosa (6.9%). La colocación de la obstrucción de madera cerca de la plantas fue significativa en el modelo estadístico para describir acorto plazo la supervivencia de los trasplantes en general y la sobrevivencia de A. tridentate. La colocación de hidrogel en la zona de la raíz también explicó a corto plazo la sobrevivencia de los trasplantes en general, así como la sobrevivencia de E. nauseosa. Sin embargo, cerca de 4 1/2 años después de los trasplantes, no hay efecto significativo en la sobrevivencia. Así para el trasplante de plántulas de arbustos en las zonas áridas y semiáridas se recomienda algún tipo de técnica para incrementar e hidrogel fueron efectivos. Se recomienda el tratamiento de obstrucción ya que la madera se puede conseguir fácilmente en estas áreas, tiene un bajo requerimiento de labor y costo, e incrementa la sobrevivencia de los trasplantes de A. tridentate, una especie de interés para la conservación; sin embargo otros tratamientos pueden ser apropiados para especies individuales.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/REM-D-10-00133.1
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 65, Number 3 (May 2012)

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