干旱区生态环境知识资源中心(Arid): Species interactions across trophic levels mediate rainfall effects on dryland vegetation dynamics

Arid

DOI	10.1002/ecm.1441
	Species interactions across trophic levels mediate rainfall effects on dryland vegetation dynamics
	Farias, Ariel A.; Armas, Cristina; Gaxiola, Aurora; Cea, Alex P.; Luis Cortes, Jose; Lopez, Ramiro P.; Casanoves, Fernando; Holmgren, Milena; Meserve, Peter L.; Gutierrez, Julio R.; Kelt, Douglas A.
通讯作者	Armas, C (corresponding author), Insti Ecol & Biodiversidad IEB, Casilla 653, Santiago, Chile. ; Armas, C (corresponding author), CSIC, Estn Expt Zonas Aridas, Carretera Sacramento S-N, Almeria 04120, Spain. ; Armas, C (corresponding author), Univ La Serena, Dept Biol, Casilla 554, La Serena, Chile.
来源期刊	ECOLOGICAL MONOGRAPHS
ISSN	0012-9615
EISSN	1557-7015
出版年	2021
卷号	91 期号:2
英文摘要	Arid ecosystems are strongly limited by water availability, and precipitation plays a major role in the dynamics of all species in arid regions, as well as the ecosystem processes that occur there. However, understanding how biotic interactions mediate long-term responses of dryland ecosystems to rainfall remains very fragmented. We report on a unique large-scale field experiment spanning 25 yr and three trophic levels (plants, small mammal herbivores, predators) in a dryland ecosystem in the northern Chilean Mediterranean Region where we assessed how biotic interactions influence the long-term plant community responses to precipitation. As the most persistent ecological changes in dryland systems may result from changes in the structure, cover, and composition of the perennial vegetation, we emphasized the interplay between bottom-up and top-down controls of perennial plants in our analyses. Rainfall was the primary factor affecting the dynamics of, and interactions among, plants and small mammals. Ephemeral plant cover dynamics closely tracked short-term annual rainfall, but seemed unaffected by top-down controls (herbivory). In contrast, the response of the perennial plant cover to precipitation was mediated by (1) a complex interplay between subtle top-down (herbivory) controls that become more apparent in the long-term, (2) competition with ephemeral plants during wet years, and (3) an indirect effect of predators on subdominant shrubs and perennial herbs. This long-term field experiment highlights how climate-induced responses of arid perennial vegetation are influenced by interactions across trophic levels and temporal scales. In the face of global change, understanding how multi-trophic controls mediate dryland vegetation responses to climate is essential to properly managing the conservation of biodiversity in arid systems.
英文关键词	abiotic vs. biotic control El Nino Southern Oscillation (ENSO) herbivory Long Term Research in Environmental Biology Long Term Socio-economic and Ecosystem Research resource pulses top-down and bottom-up controls trophic cascades
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000613307600001
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350027
作者单位	[Farias, Ariel A.] Univ Republ, Ctr Univ Reg Este CURE, Tacuarembo S-N, Maldonado 20100, Uruguay; [Farias, Ariel A.] Pontificia Univ Catolica Chile, Ctr Appl Ecol & Sustainabil CAPES, Alameda 340 POB 114-D, Santiago 6513677, Chile; [Farias, Ariel A.] Univ Santo Tomas, Ctr Invest & Innovac Cambio Climat CIICC, Santiago, Chile; [Armas, Cristina; Gaxiola, Aurora; Gutierrez, Julio R.] Insti Ecol & Biodiversidad IEB, Casilla 653, Santiago, Chile; [Armas, Cristina] CSIC, Estn Expt Zonas Aridas, Carretera Sacramento S-N, Almeria 04120, Spain; [Armas, Cristina; Cea, Alex P.; Luis Cortes, Jose; Lopez, Ramiro P.; Gutierrez, Julio R.] Univ La Serena, Dept Biol, Casilla 554, La Serena, Chile; [Gaxiola, Aurora] Pontificia Univ Catolica Chile, Dept Ecol, Casilla 114-D, Santiago, Chile; [Lopez, Ramiro P.] Univ Mayor San Andr es UMSA, Herbario Nacl Bolivia, Campus Univ,Calle 27, La Paz, Bolivia; [Casanoves, Fernando] CATIE Ctr Agron Trop Invest & Ensenanza, Turrialba 30501, Costa Rica; [Holmgren, Milena] Wageningen Univ,...
推荐引用方式 GB/T 7714	Farias, Ariel A.,Armas, Cristina,Gaxiola, Aurora,et al. Species interactions across trophic levels mediate rainfall effects on dryland vegetation dynamics[J]. University of California, Davis,2021,91(2).
APA	Farias, Ariel A..,Armas, Cristina.,Gaxiola, Aurora.,Cea, Alex P..,Luis Cortes, Jose.,...&Kelt, Douglas A..(2021).Species interactions across trophic levels mediate rainfall effects on dryland vegetation dynamics.ECOLOGICAL MONOGRAPHS,91(2).
MLA	Farias, Ariel A.,et al."Species interactions across trophic levels mediate rainfall effects on dryland vegetation dynamics".ECOLOGICAL MONOGRAPHS 91.2(2021).