干旱区生态环境知识资源中心(Arid): Harvester ant seed removal in an invaded sagebrush ecosystem: Implications for restoration

Arid

DOI	10.1002/ece3.6963
	Harvester ant seed removal in an invaded sagebrush ecosystem: Implications for restoration
	Paolini, Kelsey E.; Modlin, Matthew; Suazo, Alexis A.; Pilliod, David S.; Arkle, Robert S.; Vierling, Kerri T.; Holbrook, Joseph D.
通讯作者	Paolini, KE
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2020
卷号	10 期号:24 页码:13731-13741
英文摘要	A better understanding of seed movement in plant community dynamics is needed, especially in light of disturbance-driven changes and investments into restoring degraded plant communities. A primary agent of change within the sagebrush-steppe is wildfire and invasion by non-native forbs and grasses, primarily cheatgrass (Bromus tectorum). Our objectives were to quantify seed removal and evaluate ecological factors influencing seed removal within degraded sagebrush-steppe by granivorous Owyhee harvester ants (Pogonomyrmex salinus Olsen). In 2014, we sampled 76 harvester ant nests across 11 plots spanning a gradient of cheatgrass invasion (40%-91% cover) in southwestern Idaho, United States. We presented seeds from four plant species commonly used in postfire restoration at 1.5 and 3.0 m from each nest to quantify seed removal. We evaluated seed selection for presented species, monthly removal, and whether biotic and abiotic factors (e.g., distance to nearest nest, temperature) influenced seed removal. Our top model indicated seed removal was positively correlated with nest height, an indicator of colony size. Distance to seeds and cheatgrass canopy cover reduced seed removal, likely due to increased search and handling time. Harvester ants were selective, removing Indian ricegrass (Achnatherum hymenoides) more than any other species presented. We suspect this was due to ease of seed handling and low weight variability. Nest density influenced monthly seed removal, as we estimated monthly removal of 1,890 seeds for 0.25 ha plots with 1 nest and 29,850 seeds for plots with 15 nests. Applying monthly seed removal to historical restoration treatments across the western United States showed harvester ants can greatly reduce seed availability at degraded sagebrush sites; for instance, fourwing saltbush (Atriplex canescens) seeds could be removed in <2 months. Collectively, these results shed light on seed removal by harvester ants and emphasize their potential influence on postfire restoration within invaded sagebrush communities.
英文关键词	cheatgrass desert granivore Pogonomyrmex sagebrush restoration seed removal
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:000585965100001
WOS关键词	GREAT-BASIN ; VEGETATION ; GRASSLAND ; COVER ; PREDATION ; HABITATS ; SHRUB ; HYMENOPTERA ; PERFORMANCE ; DISTURBANCE
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327313
作者单位	[Paolini, Kelsey E.; Holbrook, Joseph D.] Univ Wyoming, Haub Sch Environm & Nat Resources, Ross Hall Room 406,1000 E Univ Ave, Laramie, WY 82071 USA; [Modlin, Matthew; Vierling, Kerri T.] Univ Idaho, Dept Fish & Wildlife Sci, Moscow, ID 83843 USA; [Suazo, Alexis A.] Univ Idaho, Dept Forest Rangeland & Fire Sci, Moscow, ID 83843 USA; [Pilliod, David S.; Arkle, Robert S.] US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, Boise, ID USA
推荐引用方式 GB/T 7714	Paolini, Kelsey E.,Modlin, Matthew,Suazo, Alexis A.,et al. Harvester ant seed removal in an invaded sagebrush ecosystem: Implications for restoration[J]. United States Geological Survey,2020,10(24):13731-13741.
APA	Paolini, Kelsey E..,Modlin, Matthew.,Suazo, Alexis A..,Pilliod, David S..,Arkle, Robert S..,...&Holbrook, Joseph D..(2020).Harvester ant seed removal in an invaded sagebrush ecosystem: Implications for restoration.ECOLOGY AND EVOLUTION,10(24),13731-13741.
MLA	Paolini, Kelsey E.,et al."Harvester ant seed removal in an invaded sagebrush ecosystem: Implications for restoration".ECOLOGY AND EVOLUTION 10.24(2020):13731-13741.