Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.rama.2017.08.002 |
Climatic Influences on Establishment Pulses of Four Artemisia Species in Nevada | |
Hourihan, Erin1,4; Schultz, Brad W.2; Perryman, Barry L.3 | |
通讯作者 | Perryman, Barry L. |
来源期刊 | RANGELAND ECOLOGY & MANAGEMENT
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ISSN | 1550-7424 |
EISSN | 1551-5028 |
出版年 | 2018 |
卷号 | 71期号:1页码:77-86 |
英文摘要 | Shrub recruitment in arid and semiarid regions often occurs in pulses controlled by specific weather events. Previous research suggested that Wyoming sagebrush in Wyoming is no exception. We examined four species/subspecies of sagebrush in Nevada, in 2009 and 2010, to discover if evidence of recruitment pulses was contained in the annual growth-ring records. Sagebrush species and subspecies occur on a wide variety of ecological sites that require different management strategies. Species included black sagebrush (Artemisia nova A. Nelson), Wyoming big sagebrush (Artemisia tridentata subsp. wyomingensis Beetle & Young), Lahontan sagebrush (Artemisia arbuscula subsp. longicaulis Winward & McArthur), and low sagebrush (Artemisia arbuscula Nutt. ssp. arbuscula). Eighty stem sections were collected from each of 24 stands (6 stands per species or subspecies) at different geographic locations along east-west or north-south gradients where each species or subspecies naturally occurred. Annual growth-ring analysis was used to determine the year of establishment and the relationship between recruitment and weather events. Results indicated stand ages and locations were different (P > 0.001) among species and subspecies, and years of recruitment were strongly correlated with local and hemispheric weather patterns. Linear and multiple regressions modeled recruitment pulses for all four species. Weather-based predictor variables indicated complex interactions between recruitment and climatic controls. Pacific Decadal Oscillation (PDO) index variables were prominent predictors for all four species at their associated sites. Other important local weather variables included total annual precipitation the year before recruitment, the year of recruitment, and the year following recruitment. In Nevada and the Great Basin, it is imperative that successful sagebrush seeding technologies are discovered and implemented. Ecological restoration and postfire rehabilitation methods should be timed correctly with respect to precipitation patterns (positive phase PDO) and/or designed to mimic conditions responsible for natural sagebrush recruitment. (C) 2017 The Society for Range Management. Published by Elsevier Inc. All rights reserved. |
英文关键词 | sagebrush recruitment establishment pulses |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000419063100010 |
WOS关键词 | WATER-USE PATTERNS ; FUNCTIONAL DIFFERENCES ; WYOMING SAGEBRUSH ; SEEDLING GROWTH ; TRIDENTATA-NUTT ; CHEATGRASS ; FIRE ; OSCILLATION ; CULTIVATION ; COMPETITION |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/212541 |
作者单位 | 1.Nat Resources Conservat Serv, Reno, NV 89502 USA; 2.Univ Nevada, Univ Nevada Cooperat Extens, Reno, NV 89557 USA; 3.Univ Nevada, Dept Agr Nutr & Vet Sci, Mail Stop 202, Reno, NV 89557 USA; 4.Univ Nevada, Dept Anim Biotechnol, Reno, NV 89557 USA |
推荐引用方式 GB/T 7714 | Hourihan, Erin,Schultz, Brad W.,Perryman, Barry L.. Climatic Influences on Establishment Pulses of Four Artemisia Species in Nevada[J],2018,71(1):77-86. |
APA | Hourihan, Erin,Schultz, Brad W.,&Perryman, Barry L..(2018).Climatic Influences on Establishment Pulses of Four Artemisia Species in Nevada.RANGELAND ECOLOGY & MANAGEMENT,71(1),77-86. |
MLA | Hourihan, Erin,et al."Climatic Influences on Establishment Pulses of Four Artemisia Species in Nevada".RANGELAND ECOLOGY & MANAGEMENT 71.1(2018):77-86. |
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