干旱区生态环境知识资源中心(Arid): Combined Grazing and Drought Stress Alter the Outcome of Nurse: Beneficiary Interactions in a Semi-arid Ecosystem

Arid

DOI	10.1007/s10021-019-00336-2
	Combined Grazing and Drought Stress Alter the Outcome of Nurse: Beneficiary Interactions in a Semi-arid Ecosystem
	Verwijmeren, Mart 1; Smit, Christian 2; Bautista, Susana 3,4; Wassen, Martin J.1; Rietkerk, Max 1
通讯作者	Verwijmeren, Mart
来源期刊	ECOSYSTEMS
ISSN	1432-9840
EISSN	1435-0629
出版年	2019
卷号	22 期号:6 页码:1295-1307
英文摘要	Positive interspecific plant-plant interactions in (semi-)arid ecosystems are crucial for supporting ecosystem diversity and stability, but how interactions respond to grazing combined with temporal variation in drought is poorly understood. In a semi-arid area in south-eastern Spain (Murcia region), we planted 1280 saplings of the palatable shrub Anthyllis cytisoides (beneficiary) under the canopy of the unpalatable shrub Artemisia herba-alba (nurse) or in open microsites between shrub patches. We applied four grazing treatments (no grazing, low goat grazing pressure, high goat grazing pressure and rabbit grazing) and two watering treatments. Sapling height and survival were followed for two consecutive years, during which one extreme drought event occurred. We analysed how grazing, watering and their combination affected nurse effects throughout the course of the study. Grazing and the drought event, but not watering, significantly altered the nurse effects. Under ungrazed conditions prior to the extreme drought event, nurse effects on sapling survival were neutral, whereas they were positive at rabbit-grazed plots. At low goat grazing, sapling growth was higher under nurse shrubs than in open microsites. However, after the extreme drought event, sapling survival was higher in open microsites at ungrazed plots, whereas at rabbit-grazed plots, nurse effects shifted from positive to neutral. Our findings highlight the importance of rabbit grazing in determining the direction of plant-plant interactions in arid ecosystems. Moreover, our findings support the idea that positive plant-plant interactions may wane under the combination of high grazing and drought stress.
英文关键词	Anthyllis cytisoides Artemisia herba-alba competition facilitation rabbit grazing goat grazing
类型	Article
语种	英语
国家	Netherlands ; Spain
开放获取类型	hybrid, Green Published, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000486261700010
WOS关键词	POSITIVE SPECIES INTERACTIONS ; NEGATIVE PLANT INTERACTIONS ; GRADIENT HYPOTHESIS ; BIOTIC INTERACTIONS ; CONSUMER PRESSURE ; SPATIAL-PATTERNS ; ABIOTIC STRESS ; FACILITATION ; SHIFTS ; COMPETITION
WOS类目	Ecology
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/2XILL650/215329
作者单位	1.Univ Utrecht, Copernicus Inst Sustainable Dev, Environm Sci, Heidelberglaan 2,POB 80115, NL-3508 TC Utrecht, Netherlands; 2.Univ Groningen, Groningen Inst Evolutionary Life Sci, Conservat Ecol Grp, POB 11103, NL-9700 CC Groningen, Netherlands; 3.Univ Alicante, Dept Ecol, Apartado Correos 99, E-03080 Alicante, Spain; 4.Univ Alicante, IMEM, Apartado Correos 99, E-03080 Alicante, Spain
推荐引用方式 GB/T 7714	Verwijmeren, Mart,Smit, Christian,Bautista, Susana,et al. Combined Grazing and Drought Stress Alter the Outcome of Nurse: Beneficiary Interactions in a Semi-arid Ecosystem[J],2019,22(6):1295-1307.
APA	Verwijmeren, Mart,Smit, Christian,Bautista, Susana,Wassen, Martin J.,&Rietkerk, Max.(2019).Combined Grazing and Drought Stress Alter the Outcome of Nurse: Beneficiary Interactions in a Semi-arid Ecosystem.ECOSYSTEMS,22(6),1295-1307.
MLA	Verwijmeren, Mart,et al."Combined Grazing and Drought Stress Alter the Outcome of Nurse: Beneficiary Interactions in a Semi-arid Ecosystem".ECOSYSTEMS 22.6(2019):1295-1307.