Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3375/043.030.0206 |
Avian Community Responses to Mechanical Thinning of a Pinyon-Juniper Woodland: Specialist Sensitivity to Tree Reduction | |
Crow, Claire2,3; van Riper, Charles, III1 | |
通讯作者 | van Riper, Charles, III |
来源期刊 | NATURAL AREAS JOURNAL |
ISSN | 0885-8608 |
EISSN | 2162-4399 |
出版年 | 2010 |
卷号 | 30期号:2页码:191-201 |
英文摘要 | Natural area managers in regions of the semi-arid west, particularly on the Colorado Plateau. are presently dealing with expanding pinyon (Pious spp. Engelm.) - juniper (Juniperus spp. Engelm.) woodlands on rangelands. Increased equipment costs associated with ’chaining’. and dangers associated with prescribed fires, have resulted in more instances where mechanical thinning of woodlands is being used. Our 2005 to 2006 study within Grand Staircase Escalante National Monument. Utah. examined responses of breeding birds to the mechanical reduction of pinyon-juniper woodlands within a randomized 4-block design that incorporated 11 control and nine treatment bird count stations. We surveyed birds within 3.1-ha bird-count stations (n = 20) prior to, and following. pinyon-juniper mechanical reduction treatments. Thinning in April 2006 removed a mean of 92% (+ 6.4% SE) of live trees from treatment blocks. The avian guild most greatly influenced by mechanical thinning included pinyon-juniper obligate species. Species eliminated following mechanical thinning were Gray Vireo (Vireo vicinior) and Brown-headed Cowbird (Molothrus ater). while Chipping Sparrow (Spizella passerine) numbers were significantly reduced. Birds in the shrub-nesting guild, including the sagebrush specialist Brewer’s Sparrow (Spizella breweri), and habitat generalists such as the Bushtit (Psaltriparius minimus). increased in relative abundance following treatment. We conclude that mechanical thinning within the Intermountain West has the potential for natural area managers to design treatments that can influence numbers of both pinyon-juniper and sagebrush (Artemisia tridentata Nutt.) steppe avian species. |
英文关键词 | avian community changes bird surveys Bureau of Land Management Colorado Plateau Intermountain West mechanical fuels reduction pinyon-juniper woodlands Utah |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000277352000007 |
WOS关键词 | HABITAT PREFERENCES ; STATISTICAL POWER ; VEGETATION ; PATTERNS ; TESTS ; FIRE |
WOS类目 | Ecology ; Forestry |
WOS研究方向 | Environmental Sciences & Ecology ; Forestry |
来源机构 | University of Arizona ; United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/165726 |
作者单位 | 1.Univ Arizona, US Geol Survey, SW Biol Sci Ctr, Sonoran Desert Res Stn, Tucson, AZ 85721 USA; 2.Resources Management Div, Springdale, UT 84767 USA; 3.Univ Arizona, Sch Nat Resources, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Crow, Claire,van Riper, Charles, III. Avian Community Responses to Mechanical Thinning of a Pinyon-Juniper Woodland: Specialist Sensitivity to Tree Reduction[J]. University of Arizona, United States Geological Survey,2010,30(2):191-201. |
APA | Crow, Claire,&van Riper, Charles, III.(2010).Avian Community Responses to Mechanical Thinning of a Pinyon-Juniper Woodland: Specialist Sensitivity to Tree Reduction.NATURAL AREAS JOURNAL,30(2),191-201. |
MLA | Crow, Claire,et al."Avian Community Responses to Mechanical Thinning of a Pinyon-Juniper Woodland: Specialist Sensitivity to Tree Reduction".NATURAL AREAS JOURNAL 30.2(2010):191-201. |
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