干旱区生态环境知识资源中心(Arid): Predators and dispersers: Context-dependent outcomes of the interactions between rodents and a megafaunal fruit plant

Arid

DOI	10.1038/s41598-020-62704-6
	Predators and dispersers: Context-dependent outcomes of the interactions between rodents and a megafaunal fruit plant
	Loayza, Andrea P.; Luna, Claudia A.; Calvino-Cancela, Maria
通讯作者	Loayza, AP
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2020
卷号	10 期号:1
英文摘要	Many plant species bear fruits that suggest adaptation to seed dispersal by extinct megafauna. Present-day seed dispersal of these megafaunal plants is carried out by rodents, which can act as predators or dispersers; whether this interaction is primarily positive or negative can depend on the context. Here, we parameterized a stochastic model using data from the field and experimental arenas to estimate the effect of rodents on the recruitment of Myrcianthes coquimbensis -an Atacama Desert shrub with megafaunal fruits- and examine whether environmental conditions can alter the sign and strength of these rodent-plant interactions. We show that the outcome of these interactions is context-dependent: in wet conditions seed removal by rodents negatively impacts the recruitment probability of M. coquimbensis; in contrast, in dry conditions, the interaction with rodents increases recruitment success. In all cases, the strength of the effect of rodents on the recruitment success was determined mainly by their role as dispersers, which could be positive or negative. This study demonstrates that by caching seeds, rodents can be effective dispersers of a megafaunal fruit plant, but that the sign and magnitude of their effect on recruitment changes as a function of the environmental context in which the interaction occurs.
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000559752700003
WOS关键词	SEED-DISPERSAL ; SIZE ; CONSEQUENCES ; CONSUMPTION ; POPULATION ; BEHAVIOR ; ECOLOGY ; DESERT ; NUMBER ; FOREST
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325624
作者单位	[Loayza, Andrea P.] Univ La Serena, Inst Invest Multidisciplinario Ciencia & Tecnol, La Serena, Chile; [Loayza, Andrea P.] Inst Ecol & Biodiversidad IEB, Las Palmeras, Nunoa, Chile; [Luna, Claudia A.] Univ Las Serena, Dept Biol, 1305 Raul Bitran, La Serena, Chile; [Calvino-Cancela, Maria] Univ Vigo, Fac Biol, Dept Ecol & Biol Anim, Vigo, Spain
推荐引用方式 GB/T 7714	Loayza, Andrea P.,Luna, Claudia A.,Calvino-Cancela, Maria. Predators and dispersers: Context-dependent outcomes of the interactions between rodents and a megafaunal fruit plant[J],2020,10(1).
APA	Loayza, Andrea P.,Luna, Claudia A.,&Calvino-Cancela, Maria.(2020).Predators and dispersers: Context-dependent outcomes of the interactions between rodents and a megafaunal fruit plant.SCIENTIFIC REPORTS,10(1).
MLA	Loayza, Andrea P.,et al."Predators and dispersers: Context-dependent outcomes of the interactions between rodents and a megafaunal fruit plant".SCIENTIFIC REPORTS 10.1(2020).