Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s00442-010-1859-y |
Early impacts of biological control on canopy cover and water use of the invasive saltcedar tree (Tamarix spp.) in western Nevada, USA | |
Pattison, Robert R.1,4; D’Antonio, Carla M.1; Dudley, Tom L.2,5; Allander, Kip K.3; Rice, Benjamin1 | |
通讯作者 | Pattison, Robert R. |
来源期刊 | OECOLOGIA
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ISSN | 0029-8549 |
出版年 | 2011 |
卷号 | 165期号:3页码:605-616 |
英文摘要 | The success of biological control programs is rarely assessed beyond population level impacts on the target organism. The question of whether a biological control agent can either partially or completely restore ecosystem services independent of population level control is therefore still open to discussion. Using observational and experimental approaches, we investigated the ability of the saltcedar leaf beetle [Diorhabda carinulata (Brull,) (Coleoptera: Chrysomelidae)] to reduce the water use of saltcedar trees (Tamarix ramosissima Ledeb.) in two sites (Humboldt and Walker Rivers) in Nevada, USA. At these sites D. carinulata defoliated the majority of trees within 25 and 9 km, respectively, of the release location within 3 years. At the Humboldt site, D. carinulata reduced the canopy cover of trees adjacent to the release location by > 90%. At a location 4 km away during the first year of defoliation, D. carinulata reduced peak (August) stem water use by 50-70% and stand transpiration (July to late September) by 75% (P = 0.052). There was, however, no reduction in stem water use and stand transpiration during the second year of defoliation due to reduced beetle abundances at that location. At the Walker site, we measured stand evapotranspiration (ET) in the center of a large saltcedar stand and found that ET was highest immediately prior to D. carinulata arrival, dropped dramatically with defoliation, and remained low through the subsequent 2 years of the study. In contrast, near the perimeter of the stand, D. carinulata did not reduce sap flow, partly because of low rates of defoliation but also because of increased water use per unit leaf area in response to defoliation. Taken together, our results provide evidence that in the early stages of population expansion D. carinulata can lead to substantial declines in saltcedar water use. The extent of these declines varies spatially and temporally and is dependent on saltcedar compensatory responses along with D. carinulata population dynamics and patterns of dispersal. |
英文关键词 | Defoliation Evapotranspiration Herbivory Sap flow |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000287361500007 |
WOS关键词 | MOJAVE DESERT FLOODPLAIN ; EDDY COVARIANCE ; UNITED-STATES ; LEAF BEETLE ; RIPARIAN RESTORATION ; RAMOSISSIMA STANDS ; SAP FLUX ; EVAPOTRANSPIRATION ; TRANSPIRATION ; DEFOLIATION |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/169817 |
作者单位 | 1.USDA ARS, Exot & Invas Weed Res Unit, Reno, NV USA; 2.Univ Nevada, Dept Nat Resources & Environm Sci, Reno, NV 89557 USA; 3.US Geol Survey, Reno, NV USA; 4.USDA FS, Anchorage Forestry Sci Lab, Anchorage, AK USA; 5.Univ Calif Santa Barbara, Inst Marine Sci, Santa Barbara, CA 93106 USA |
推荐引用方式 GB/T 7714 | Pattison, Robert R.,D’Antonio, Carla M.,Dudley, Tom L.,et al. Early impacts of biological control on canopy cover and water use of the invasive saltcedar tree (Tamarix spp.) in western Nevada, USA[J]. United States Geological Survey,2011,165(3):605-616. |
APA | Pattison, Robert R.,D’Antonio, Carla M.,Dudley, Tom L.,Allander, Kip K.,&Rice, Benjamin.(2011).Early impacts of biological control on canopy cover and water use of the invasive saltcedar tree (Tamarix spp.) in western Nevada, USA.OECOLOGIA,165(3),605-616. |
MLA | Pattison, Robert R.,et al."Early impacts of biological control on canopy cover and water use of the invasive saltcedar tree (Tamarix spp.) in western Nevada, USA".OECOLOGIA 165.3(2011):605-616. |
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