干旱区生态环境知识资源中心(Arid): Not gone with the wind: Vegetation complexity increases seed retention during windy periods in the Argentine Semiarid Chaco

Arid

DOI	10.1111/jvs.12747
	Not gone with the wind: Vegetation complexity increases seed retention during windy periods in the Argentine Semiarid Chaco
	Lucrecia Lipoma, Maria 1,2; Cuchietti, Anibal 1,3; Gorne, Lucas D.1,2; Diaz, Sandra M.1,2
通讯作者	Lucrecia Lipoma, Maria
来源期刊	JOURNAL OF VEGETATION SCIENCE
ISSN	1100-9233
EISSN	1654-1103
出版年	2019
卷号	30 期号:3 页码:542-552
英文摘要	Questions We experimentally studied whether different degrees of vegetation structural complexity, developed under different land-use regimes, affected the retention of seeds in situ in the semiarid Chaco forest. We sought to answer the following questions: (a) Does vegetation complexity in interaction with climatic conditions affect seed retention on the soil surface? (b) Do seeds with contrasting traits show the same retention pattern? Location Chancani, Northwestern Cordoba, Argentina. Methods We run a field experiment to test seed retention across 16 field sites differing in physiognomy and land-use regime. We used artificial seeds with contrasting traits to simulate extreme morphologies found among dominant species of the Chaco forest (large-flattened and small-spherical seed types). We placed artificial seeds in 10 quadrats along a transect at each site and recorded the number of seeds retained after 25 days. We performed the experiment in the same season in two consecutive years. Through a Principal Component Analysis of a matrix of 320 survey plots by 6 structural variables, we extracted two major multivariate axes summarizing vegetation complexity. Results Vegetation complexity was strongly related to land-use regimes, and a more complex vegetation structure increased seed retention, particularly in the first year of the experiment, when wind velocity was twice the value of the historical mean. The same general retention pattern was observed for different seed types with contrasting size and shape, but the absolute amount of retention was lower for large-flattened than small-spherical seeds. Conclusion Vegetation complexity interacting with variable climatic conditions -especially wind velocity- and seed morphology increased seed retention on the soil surface. Because seed dynamics is known to play an essential role in vegetation recovery, manipulation of soil cover should be a key factor in vegetation resilience in these systems.
英文关键词	land use resilience secondary dispersal phase seed morphology seed retention semi-arid Chaco vegetation complexity wind dispersal
类型	Article
语种	英语
国家	Argentina
收录类别	SCI-E
WOS记录号	WOS:000469999900013
WOS关键词	PLANT FUNCTIONAL TRAITS ; SANDY MONTE DESERT ; LAND-USE ; ARID LANDS ; DISPERSAL ; FOREST ; LITTER ; REGENERATION ; PATTERNS ; BANKS
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/2XILL650/217403
作者单位	1.Consejo Nacl Invest Cient & Tecn, Inst Multidisciplinario Biol Vegetal IMBIV, Cordoba, Argentina; 2.Univ Nacl Cordoba, FCEFyN, Cordoba, Argentina; 3.Minist Ambiente & Desarrollo Sustentable SAyDS, Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Lucrecia Lipoma, Maria,Cuchietti, Anibal,Gorne, Lucas D.,et al. Not gone with the wind: Vegetation complexity increases seed retention during windy periods in the Argentine Semiarid Chaco[J],2019,30(3):542-552.
APA	Lucrecia Lipoma, Maria,Cuchietti, Anibal,Gorne, Lucas D.,&Diaz, Sandra M..(2019).Not gone with the wind: Vegetation complexity increases seed retention during windy periods in the Argentine Semiarid Chaco.JOURNAL OF VEGETATION SCIENCE,30(3),542-552.
MLA	Lucrecia Lipoma, Maria,et al."Not gone with the wind: Vegetation complexity increases seed retention during windy periods in the Argentine Semiarid Chaco".JOURNAL OF VEGETATION SCIENCE 30.3(2019):542-552.