干旱区生态环境知识资源中心(Arid): Functional syndromes as indicators of ecosystem change in temperate grasslands

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DOI	10.1016/j.ecolind.2018.09.046
	Functional syndromes as indicators of ecosystem change in temperate grasslands
	Texeira, Marcos 1,2; Veron, Santiago 2,3; Irisarri, Gonzalo 1,4; Oyarzabal, Mariano 2; Staiano, Luciana 1,2; Baeza, Santiago 5; Paruelo, Jose 1,2,6
通讯作者	Texeira, Marcos
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2019
卷号	96 页码:600-610
英文摘要	The lack of an organizing conceptual framework to address ecosystem changes reduces our capacity to distinguish biophysical from direct human impacts on grassland dynamics. This is particularly important for subhumid temperate grasslands, one of the world's most threatened biomes. We identified and mapped 4 functional syndromes of grassland change at the wettest end of its worldwide distribution, the Campos in Uruguay. Syndromes were defined by differences in precipitation use efficiency (PUE, ANPP/precipitation), and in precipitation marginal response (PMR, slope of the linear regression between ANPP and precipitation) between two periods (1981-1995 and 2001-2011). Temporal trends in aboveground net primary production (ANPP, obtained by splicing two sources of NDVI, LTDR and MOD13Q1) were also characterized. To rule out the effect of precipitation we analyzed temporal trends of the residuals from the relationship between ANPP and annual precipitation (RESTRENDS). Functional syndromes associated with increases in seasonality or in the abundance of annual vegetation (Delta PMR > 0, Delta PUE < 0, 14,000 km(2)) and vegetation cover loss (Delta PUE < 0 and Delta PMR < 0, > 5000 km(2)) were the most abundant. ANPP trends were significantly negative in 3.7% of the area (2475 km(2)) and only positive in 0.3%. However, RESTRENDS were significant in 11% of the area (> 7700 km(2)), and mostly negative (in -7200 km(2)). Most of these negative trends and residual trends were associated to seasonality increase and vegetation loss syndromes. These patterns were consistent with observed changes in the region. We highlight that this conceptual framework is suitable for describing patterns of change and potential causes. Moreover, it provides policymakers with a novel tool to guide management and conservation policies, pointing to sites where intervention (i.e. conservation, restoration) is needed.
英文关键词	Aboveground Net Primary Production (ANPP) Ecosystem functional syndromes MODIS LTDR Precipitation use efficiency (PUE) Precipitation marginal response (PMR) Rio de la Plata grasslands
类型	Article
语种	英语
国家	Argentina ; Uruguay
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000464889600059
WOS关键词	NET PRIMARY PRODUCTION ; DESERTIFICATION ALTERS ; SHRUB ENCROACHMENT ; GRAZING INTENSITY ; FORAGE PRODUCTION ; USE EFFICIENCY ; CLIMATE ; VARIABILITY ; DIVERSITY ; PATTERNS
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215185
作者单位	1.Univ Buenos Aires, Inst Invest Fisiol & Ecol Vinculadas Agr IFEVA, Fac Agron, CONICET,LART, Av San Martin 4453,C1417DSE, Buenos Aires, DF, Argentina; 2.Univ Buenos Aires, Dept Metodos Cuantitativos & Sistemas Informat, Fac Agron, Av San Martin 4453,C1417DSE, Buenos Aires, DF, Argentina; 3.Inst Nacl Tecnol Agr, Inst Clima & Agua, Nicolas Repetto & Reseros S-N 1686, Buenos Aires, DF, Argentina; 4.Univ Buenos Aires, Catedra Forrajicultura, Fac Agron, Av San Martin 4453,C1417DSE, Buenos Aires, DF, Argentina; 5.Univ Republica, Dept Sistemas Ambientales, Fac Agron, Garzon 780, Montevideo 12900, Uruguay; 6.Estn Expt Estanzuela, Inst Natl Invest Agr, Ruta 50 Km 11, Colonia, Uruguay
推荐引用方式 GB/T 7714	Texeira, Marcos,Veron, Santiago,Irisarri, Gonzalo,et al. Functional syndromes as indicators of ecosystem change in temperate grasslands[J],2019,96:600-610.
APA	Texeira, Marcos.,Veron, Santiago.,Irisarri, Gonzalo.,Oyarzabal, Mariano.,Staiano, Luciana.,...&Paruelo, Jose.(2019).Functional syndromes as indicators of ecosystem change in temperate grasslands.ECOLOGICAL INDICATORS,96,600-610.
MLA	Texeira, Marcos,et al."Functional syndromes as indicators of ecosystem change in temperate grasslands".ECOLOGICAL INDICATORS 96(2019):600-610.