Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2010.05.030 |
Variation in nutrient resorption by desert shrubs | |
Drenovsky, Rebecca E.1; James, Jeremy J.2; Richards, James H.3 | |
通讯作者 | Drenovsky, Rebecca E. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
出版年 | 2010 |
卷号 | 74期号:11页码:1564-1568 |
英文摘要 | Plant nutrient resorption prior to leaf senescence is an important nutrient conservation mechanism for aridland plant species. However, little is known regarding the phylogenetic and environmental factors influencing this trait. Our objective was to compare nitrogen (N) and phosphorous (P) resorption in a suite of species in the Asteraceae and Chenopodiaceae and assess the impact of soil salinity on nitrogen resorption. Although asters and chenopods did not differ in N resorption proficiency, chenopods were more proficient than asters at resorbing P. Plant responses to salinity gradients were species-specific and likely related to different salt-tolerances of the species. During the three year study, precipitation varied 6.4- and 9.9-fold from the long term averages at our two desert sites: despite these differences, annual variation in nutrient resorption was not linked to annual precipitation. More detailed studies are required to understand the influence of salinity and precipitation on resorption. Understanding controls on this trait may give insight into how species will respond to anthropogenic soil salinization and desertification. (C) 2010 Elsevier Ltd. All rights reserved. |
英文关键词 | Drought Phylogenetic comparison Resorption proficiency Senesced leaf nitrogen Senesced leaf phosphorus Salinity |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000282547600025 |
WOS关键词 | SARCOBATUS-VERMICULATUS ; GRADIENT ; NITROGEN ; GROWTH ; CHENOPODIACEAE ; FERTILIZATION ; CONSTITUENTS ; PROFICIENCY ; VEGETATION ; EFFICIENCY |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | University of California, Davis |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/164969 |
作者单位 | 1.John Carroll Univ, Dept Biol, University Hts, OH 44118 USA; 2.USDA ARS, Eastern Oregon Agr Res Ctr, Burns, OR 97720 USA; 3.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA |
推荐引用方式 GB/T 7714 | Drenovsky, Rebecca E.,James, Jeremy J.,Richards, James H.. Variation in nutrient resorption by desert shrubs[J]. University of California, Davis,2010,74(11):1564-1568. |
APA | Drenovsky, Rebecca E.,James, Jeremy J.,&Richards, James H..(2010).Variation in nutrient resorption by desert shrubs.JOURNAL OF ARID ENVIRONMENTS,74(11),1564-1568. |
MLA | Drenovsky, Rebecca E.,et al."Variation in nutrient resorption by desert shrubs".JOURNAL OF ARID ENVIRONMENTS 74.11(2010):1564-1568. |
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