干旱区生态环境知识资源中心(Arid): Vertebrate herbivory on shrub seedlings in California sage scrub: important but understudied interactions

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DOI	10.1007/s11258-019-00932-1
	Vertebrate herbivory on shrub seedlings in California sage scrub: important but understudied interactions
	Litle, John 1; Quon, Lauren H.2; Antill, Marlee L.2; Questad, Erin J.2; Meyer, Wallace M., III 1
通讯作者	Meyer, Wallace M., III
来源期刊	PLANT ECOLOGY
ISSN	1385-0237
EISSN	1573-5052
出版年	2019
卷号	220 期号:4-5 页码:523-528
英文摘要	Herbivory is poorly characterized in the endangered California sage scrub ecosystem, because previous studies were conducted only in winter and spring. To better understand vertebrate herbivore impacts, we first examined if and when vertebrate herbivores influence Artemisia californica seedling survivorship by examining differences in mortality between caged and uncaged seedlings. Then, we examined: (1) vertebrate herbivore preference of common sage scrub shrub species, and (2) which vertebrate species constitute important herbivores in the ecosystem. We found that mortality for uncaged A. californica seedlings was twice that of caged seedlings, and occurred in the summer and early fall, when previous studies in the system were not conducted. Short leaved shrubs, Artemisia californica and Eriogonum fasciculatum, were more susceptible to herbivory than broader leaved Salvia apiana and Eriodictyon trichocalyx. However, susceptibility likely depends on the herbivore assemblage, as the three main herbivore species [Sylvilagus audubonii (desert cottontail), Zonotrichia leucophrys (white-crowned sparrow; a bird, not a mammal), and Otospermophilus beecheyi (California gray squirrel)] all had different shrub preferences. Our results contrast with previous studies that suggests that native vertebrate herbivores facilitate shrub seedling survivorship by highlighting that late-season vertebrate herbivory may negatively affect shrub seedling survivorship. We demonstrate the complex but understudied role herbivores play in the sage scrub ecosystem, and highlight that further study of these key ecological interactions is warranted.
英文关键词	Mammal Bird Species interactions Plant community Top-down Preference
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000464898600009
WOS关键词	SOUTHERN-CALIFORNIA ; NONNATIVE GRASSLAND ; COMMUNITIES ; SUCCESSION ; USA
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/2XILL650/218038
作者单位	1.Pomona Coll, Dept Biol, 175 W Sixth St, Claremont, CA 91711 USA; 2.Calif State Polytech Univ Pomona, Dept Biol Sci, 3801 W Temple Ave, Pomona, CA 91768 USA
推荐引用方式 GB/T 7714	Litle, John,Quon, Lauren H.,Antill, Marlee L.,et al. Vertebrate herbivory on shrub seedlings in California sage scrub: important but understudied interactions[J],2019,220(4-5):523-528.
APA	Litle, John,Quon, Lauren H.,Antill, Marlee L.,Questad, Erin J.,&Meyer, Wallace M., III.(2019).Vertebrate herbivory on shrub seedlings in California sage scrub: important but understudied interactions.PLANT ECOLOGY,220(4-5),523-528.
MLA	Litle, John,et al."Vertebrate herbivory on shrub seedlings in California sage scrub: important but understudied interactions".PLANT ECOLOGY 220.4-5(2019):523-528.