Arid
DOI10.1016/j.jaridenv.2009.07.016
Variation in post-dispersal predation of cactus seeds under nurse plant canopies in three plant associations of a semiarid scrubland in central Mexico
Garcia-Chavez, J.2; Sosa, V. J.1; Montana, C.1
通讯作者Sosa, V. J.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2010
卷号74期号:1页码:54-62
英文摘要

This study compares the post-dispersal predation of seeds from the cacti Myrtillocactus geometrizans and Opuntia pilifera by diurnal vertebrates, nocturnal vertebrates, and ants under nurse plants in three plant associations found in the semiarid scrubland of Tehuacan Valley (Mexico). Experiments on seed removal showed that, regardless of cactus species and plant association, ants were the main seed predators. Predation of M. geometrizans seeds varied depending on plant association and predator type, but it could not be associated with the abundance of granivore guilds; seed predation was more prominent in scrublands dominated by Beaucarnea gracilis. For O. pilifera, seed predation by ants was more intense in scrublands dominated by Neobuxbaumia tetetzo, but there was a significant interaction between plant association and predator type. These results support the existence of spatial variability in interactions between seeds and granivores above the microhabitat scale, which-to varying degrees of intensity-influences the distribution of seeds dispersed by frugivorous animals. This among-plant association variability in seed-granivore interactions, in addition to the within-plant association variability (e.g. nurse canopy vs. open area), should be taken into account when studying the causes of differential recruitment of plant species in arid environments. (C) 2009 Elsevier Ltd. All rights reserved.


英文关键词Myrtillocactus Opuntia Pheidole Pogonomyrmex Post-dispersal predation Tehuacan-Cuicatlan
类型Article
语种英语
国家Mexico
收录类别SCI-E
WOS记录号WOS:000272259700007
WOS关键词SIZE-GRAIN HYPOTHESIS ; SEEDLING ESTABLISHMENT ; NEOBUXBAUMIA-TETETZO ; HABITAT SEGREGATION ; CHIHUAHUAN DESERT ; SPECIES RICHNESS ; TEHUACAN VALLEY ; BODY-SIZE ; ANTS ; SOIL
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/164847
作者单位1.Inst Ecol, Xalapa 91000, Veracruz, Mexico;
2.Benemerita Univ Autonoma Puebla, Escuela Biol, Puebla 72570, Mexico
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Garcia-Chavez, J.,Sosa, V. J.,Montana, C.. Variation in post-dispersal predation of cactus seeds under nurse plant canopies in three plant associations of a semiarid scrubland in central Mexico[J],2010,74(1):54-62.
APA Garcia-Chavez, J.,Sosa, V. J.,&Montana, C..(2010).Variation in post-dispersal predation of cactus seeds under nurse plant canopies in three plant associations of a semiarid scrubland in central Mexico.JOURNAL OF ARID ENVIRONMENTS,74(1),54-62.
MLA Garcia-Chavez, J.,et al."Variation in post-dispersal predation of cactus seeds under nurse plant canopies in three plant associations of a semiarid scrubland in central Mexico".JOURNAL OF ARID ENVIRONMENTS 74.1(2010):54-62.
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