干旱区生态环境知识资源中心(Arid): Increased litter decomposition rates of exotic invasive species Hieracium pilosella (Asteraceae) in Southern Patagonia, Argentina

Arid

DOI	10.1007/s11258-019-00922-3
	Increased litter decomposition rates of exotic invasive species Hieracium pilosella (Asteraceae) in Southern Patagonia, Argentina
	Braun, Karen 1; Collantes, M. B.1; Yahdjian, L.2; Escartin, C.1; Anchorena, J. A.1
通讯作者	Braun, Karen
来源期刊	PLANT ECOLOGY
ISSN	1385-0237
EISSN	1573-5052
出版年	2019
卷号	220 期号:3 页码:393-403
英文摘要	Plant invasions can affect key ecosystem processes regulating carbon and nutrient balances, i.e., litter decomposition. Exotic herb Hieracium pilosella (hawkweed, Asteraceae) recently invaded steppes of Tierra del Fuego island, Southern Patagonia, Argentina, where plant communities exhibit different vulnerabilities to invasion. To investigate H. pilosella invasion's effects on litter decomposition, we conducted a field experiment in two plant communities, a tussock grassland and a grazing lawn, having contrasting environmental conditions and different vulnerabilities of being invaded by H. pilosella. At each community, we decomposed litter of dominant native species and of the exotic herb during 24months. In addition, we characterized the litter qualities of the different species, and the microclimates of the communities. Exotic litter decomposition was remarkably faster and showed a higher association to microenvironmental variability compared to native litter decomposition. H. pilosella decomposed three-times faster than native litter in the moister, and more susceptible to invasion by H. pilosella plant community, the tussock grassland. By contrast, decomposition of native litter was not associated to the contrasting environmental conditions of the studied communities. Results suggest that introduced species may exhibit different ecosystem process rates and controls compared to resident species, affecting ecosystem nutrient and carbon cycles.
英文关键词	Carbon cycle Grasslands Litter decomposition Ecosystem process Plant invasions
类型	Article
语种	英语
国家	Argentina
收录类别	SCI-E
WOS记录号	WOS:000461204000009
WOS关键词	TIERRA-DEL-FUEGO ; LEAF-LITTER ; BIOLOGICAL INVASION ; TUSSOCK GRASSLANDS ; ALTERNATIVE STATES ; CHIHUAHUAN DESERT ; SOIL RESPIRATION ; PLANT INVASION ; LIGNIN CONTROL ; MYRICA-FAYA
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218034
作者单位	1.Consejo Nacl Invest Cient & Tecn, Museo Argentino Ciencias Nat Bernardino Rivadavia, Lab Ecol Pastizales, Angel Gallardo 490,C1405, Buenos Aires, DF, Argentina; 2.Univ Buenos Aires, Fac Agron, CONICET, IFEVA, Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Braun, Karen,Collantes, M. B.,Yahdjian, L.,et al. Increased litter decomposition rates of exotic invasive species Hieracium pilosella (Asteraceae) in Southern Patagonia, Argentina[J],2019,220(3):393-403.
APA	Braun, Karen,Collantes, M. B.,Yahdjian, L.,Escartin, C.,&Anchorena, J. A..(2019).Increased litter decomposition rates of exotic invasive species Hieracium pilosella (Asteraceae) in Southern Patagonia, Argentina.PLANT ECOLOGY,220(3),393-403.
MLA	Braun, Karen,et al."Increased litter decomposition rates of exotic invasive species Hieracium pilosella (Asteraceae) in Southern Patagonia, Argentina".PLANT ECOLOGY 220.3(2019):393-403.