Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3161/15052249PJE2016.64.2.001 |
The influence of disturbance type on precipitation - use efficiency at functional group and species scales in an arid habitat | |
Busso, Carlos A.1,2; Montenegro, Oscar A.3; Torres, Yanina A.1,4; Giorgetti, Hugo D.3; Rodriguez, Gustavo D.3 | |
通讯作者 | Busso, Carlos A. |
来源期刊 | POLISH JOURNAL OF ECOLOGY
![]() |
ISSN | 1505-2249 |
出版年 | 2016 |
卷号 | 64期号:2页码:143-164 |
英文摘要 | We used long-term datasets (1984-1992) to contrast precipitation-use efficiency estimates between various disturbance kinds at a functional group and/or a species scale. Effects of varying amounts of precipitation and plant cover on PUE were also examined. Field studies were conducted at northeastern, arid Patagonia, Argentina (40 degrees 39’49 ’’ S, 62 degrees 53’6.4 ’’ W). Within each management kind, biomass was sampled in 0.5 x 0.5m permanent plots (n = 30) over 9 years after defoliation at 5 cm stubble at the end of each growing season, and it was separated into species. Biomass sampling allowed determination of annual net primary production. Thereafter, species were grouped into each of three functional groups. Precipitation-use efficiency (PUE) was calculated as the total dry matter produced per unit surface area on any given year divided by the total rainfall in that year. Plant cover on 20 out of those 30 plots was determined to study the relationship between plant cover and PUE. The contribution of cool-season perennial grasses to total PUE was higher (P <0.05) than that found for the other two functional groups in all management kinds and years. PUE was similar (P> 0.05) in wet than dry years, and it was greater (P <0.05) or similar (P> 0.05), but not lower, on the more than less competitive perennial grass species in all management kinds. The relationship between plant cover and PUE was positive, linear (P <0.0000) and management-kind dependent. |
英文关键词 | precipitation-use efficiency late- and early-seral plant species arid zones burning old fields overgrazing inter-annual variability |
类型 | Article |
语种 | 英语 |
国家 | Argentina |
收录类别 | SCI-E |
WOS记录号 | WOS:000379194600001 |
WOS关键词 | WATER-USE EFFICIENCY ; TEMPERATE SEMIARID GRASSLAND ; RAIN USE EFFICIENCY ; NITROGEN TRANSFORMATIONS ; ECOLOGICAL RESTORATION ; SHORTGRASS PRAIRIE ; PERENNIAL GRASSES ; CENTRAL ARGENTINA ; CARBON BALANCE ; GREAT-PLAINS |
WOS类目 | Ecology |
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/2XILL650/195706 |
作者单位 | 1.UNS, Dept Agron, RA-8000 Bahia Blanca, Buenos Aires, Argentina; 2.Consejo Nacl Invest Cient & Tecn, CERZOS, RA-8000 Bahia Blanca, Buenos Aires, Argentina; 3.Minist Asuntos Agr, Chacra Expt Patagones, RA-8504 Carmen De Patagones, Buenos Aires, Argentina; 4.Comis Invest Cient Prov Buenos Aires CIC, La Plata, Buenos Aires, Argentina |
推荐引用方式 GB/T 7714 | Busso, Carlos A.,Montenegro, Oscar A.,Torres, Yanina A.,et al. The influence of disturbance type on precipitation - use efficiency at functional group and species scales in an arid habitat[J],2016,64(2):143-164. |
APA | Busso, Carlos A.,Montenegro, Oscar A.,Torres, Yanina A.,Giorgetti, Hugo D.,&Rodriguez, Gustavo D..(2016).The influence of disturbance type on precipitation - use efficiency at functional group and species scales in an arid habitat.POLISH JOURNAL OF ECOLOGY,64(2),143-164. |
MLA | Busso, Carlos A.,et al."The influence of disturbance type on precipitation - use efficiency at functional group and species scales in an arid habitat".POLISH JOURNAL OF ECOLOGY 64.2(2016):143-164. |
条目包含的文件 | ||||||
文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
The influence of dis(2631KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
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。