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dc.creatorHester, Justin Wayne
dc.descriptionDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to, referencing the URI of the item.en
dc.descriptionIncludes bibliographical references.en
dc.descriptionIssued also on microfiche from Lange Micrographics.en
dc.description.abstractInterception of precipitation by blueberry (Juniperus ashei Buchh.) and redberry juniper (Juniperus pinchotii Sudw.) canopies was analyzed using gross precipitation, throughfall, and stemflow data collected at the Texas A&M University Research Station at Sonora, Texas. The objective was to characterize interception by juniper canopy and litter, and to determine the redistributive effects of throughfall and stemflow on site hydrology. Based on a 10-year distribution pattern of rainfall, 66.2% of the precipitation underneath the canopies of J. pinchotii was in the form of throughfall, and 7.9% was in the form of stemflow. Beneath the canopies of J. ashei, 58.2% was in the form of throughfall, while 5. 1 % was in the form of stemflow. 41.6% of the precipitation that fell below the canopies was intercepted by the litter layer of both trees. I The effects that the canopies of both juniper species, and live oak (Quercus virginiana Mill.) have on herbaceous vegetation at various distances from the trunk and the response in herbaceous production following canopy removal were also evaluated. The canopies of all three species reduced herbaceous production. Total standing biomass was greatest at the dripline of all three species. Three years after canopy removal, herbaceous vegetation was bolstered at all sample locations. Hence, the tree species were not only inhibiting herbaceous production beneath the canopies, but also in the tree/shrub interspace as well. Following canopy removal, infiltration rates and sediment production were determined to assess how oak, juniper, bunchgrass, and shortgrass vegetation types and prescribed burning influence rangeland hydrology over time. Woody dominated areas had significantly greater infiltration rates and less sediment production than did grass dominated areas. In addition, following removal, the former oak and juniper mottes retained the hydrological characteristics of woody dominated areas indefinitely. Furthermore, although prescribed burning is an effective, inexpensive means of removing woody vegetation, a cost in the form of accelerated erosion rates was incurred for a brief period after the burn.en
dc.publisherTexas A&M University
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en
dc.subjectrangeland ecology and management.en
dc.subjectMajor rangeland ecology and management.en
dc.titleInfluence of woody dominated rangelands on site hydrology and herbaceous production, Edwards Plateau, Texasen
dc.typeThesisen ecology and managementen
dc.format.digitalOriginreformatted digitalen

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