Arid
DOI10.3161/15052249PJE2016.64.2.001
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
ISSN1505-2249
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
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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.
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