Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1890/ES11-00305.1 |
Short-term effects of elevated precipitation and nitrogen on soil fertility and plant growth in a Neotropical savanna | |
Copeland, Stella M.1; Bruna, Emilio M.1,2; Barbosa Silva, Laura V.1,4; Mack, Michelle C.3; Vasconcelos, Heraldo L.4 | |
通讯作者 | Copeland, Stella M. |
来源期刊 | ECOSPHERE
![]() |
ISSN | 2150-8925 |
出版年 | 2012 |
卷号 | 3期号:4 |
英文摘要 | Increasing nitrogen (N) deposition and changing precipitation patterns in Neotropical savannas could alter plant growth, reproduction, and nutrients by altering soil nutrient and water availability. We examined the potential for simulated N deposition and increased dry season precipitation to have interactive effects on reproduction and growth of two abundant native Cerrado (Brazilian savanna) grasses-Loudetiopsis chrysothrix and Tristachya leiostachya-via feedbacks with soil nutrient status. Plant growth and reproduction responses consistently varied by species. Water addition led to more consistent increases in both growth and reproduction than nitrogen addition and the two treatments did have significant interactive effects. We expected that both treatments would affect plant growth and reproduction via positive effects on soil and plant N. Instead, we found that plant responses were linked to species-specific treatment effects on soil and foliar phosphorus (P). Structural equation models (SEM) confirmed that changes in soil P-rather than changes in soil N or increasing soil acidity-explained plant response to treatments. Our results imply that N deposition and precipitation change could impact Cerrado plant growth and reproduction via subtle effects on plant and soil phosphorus. |
英文关键词 | Brazil bunchgrass Cerrado Loudetiopsis chrysothrix nitrogen enrichment phosphorus precipitation change savanna soil fertility Tristachya leiostachya |
类型 | Article |
语种 | 英语 |
国家 | USA ; Brazil |
收录类别 | SCI-E |
WOS记录号 | WOS:000327301200004 |
WOS关键词 | NUTRIENT LIMITATION ; PRIMARY PRODUCTIVITY ; GRASSLAND RESPONSES ; CHIHUAHUAN DESERT ; BRAZILIAN CERRADO ; N-MINERALIZATION ; CARBON-DIOXIDE ; GLOBAL CHANGES ; PATH-ANALYSIS ; DEPOSITION |
WOS类目 | Ecology |
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/2XILL650/172091 |
作者单位 | 1.Univ Florida, Dept Wildlife Ecol & Conservat, Gainesville, FL 32611 USA; 2.Univ Florida, Ctr Latin Amer Studies, Gainesville, FL 32611 USA; 3.Univ Florida, Dept Biol, Gainesville, FL 32611 USA; 4.Univ Fed Uberlandia, Inst Biol, BR-38400902 Uberlandia, MG, Brazil |
推荐引用方式 GB/T 7714 | Copeland, Stella M.,Bruna, Emilio M.,Barbosa Silva, Laura V.,et al. Short-term effects of elevated precipitation and nitrogen on soil fertility and plant growth in a Neotropical savanna[J]. University of California, Davis,2012,3(4). |
APA | Copeland, Stella M.,Bruna, Emilio M.,Barbosa Silva, Laura V.,Mack, Michelle C.,&Vasconcelos, Heraldo L..(2012).Short-term effects of elevated precipitation and nitrogen on soil fertility and plant growth in a Neotropical savanna.ECOSPHERE,3(4). |
MLA | Copeland, Stella M.,et al."Short-term effects of elevated precipitation and nitrogen on soil fertility and plant growth in a Neotropical savanna".ECOSPHERE 3.4(2012). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。