干旱区生态环境知识资源中心(Arid): A chemical and bio-herbicide mixture increased exotic invaders, both targeted and non-targeted, across a diversely invaded landscape after fire

Arid

DOI	10.1111/avsc.12574
	A chemical and bio-herbicide mixture increased exotic invaders, both targeted and non-targeted, across a diversely invaded landscape after fire
	Lazarus, Brynne E.; Germino, Matthew J.
通讯作者	Lazarus, BE (corresponding author), US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, Snake River Field Stn, Boise, ID 83702 USA.
来源期刊	APPLIED VEGETATION SCIENCE
ISSN	1402-2001
EISSN	1654-109X
出版年	2021
卷号	24 期号:2
英文摘要	Questions Invasive-plant treatments often target a single or few species, but many landscapes are diversely invaded. Exotic annual grasses (EAGs) increase wildfires and degrade native perennial plant communities in cold-desert rangelands, and herbicides are thus sprayed to inhibit EAG germination and establishment. We asked how EAG target and non-target species responded to an herbicide mixture sprayed over a large, topographically diverse landscape after wildfire. We focused on how whole-community and natural EAG-pathogen treatment responses varied over years and physical properties of sites. Location Sagebrush steppe of southwest Idaho, USA. Methods We monitored plant cover and diversity in 41 pairs of plots located inside or outside areas (486 ha total) treated with a combined aerial broadcast spray of pre-emergent herbicide (imazapic) and weed-suppressive bacteria (Pseudomonas fluorescens, MB906) to target EAGs after wildfires. Results EAG cover and exotic species richness were initially less in treated plots but increased to levels similar to or greater than those of untreated plots by the third post-treatment year. The EAG pathogen Ustilago bullata was not directly affected by the treatment. The treatment increased exotic perennial forb cover in all plots and exotic annual forb cover in cooler/wetter plots but reduced exotic annual forb cover in warmer/drier plots. Cover of the invasive biennial grass Poa bulbosa decreased more across study years in untreated than treated plots. Among natives, the treatment reduced perennial grass cover and annual forb presence but led to marginal increases in perennial forb cover and, on soils with less gravel, increased shrub presence. Conclusions A treatment targeting a single plant functional group did not achieve lasting success in these diversely invaded communities. Spraying alone did not release native perennials sufficiently to counteract the simultaneous release of secondary invaders and the return of target invaders. Planting or seeding may also be needed to achieve management goals.
英文关键词	Bromus tectorum herbicide Imazapic MB906 post fire recovery Pseudomonas fluorescens restoration sagebrush steppe secondary invasion Taeniatherum caput-medusae Ustilago bullata weed-suppressive bacteria
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000667075000001
WOS关键词	BROME BROMUS-TECTORUM ; SAGEBRUSH-STEPPE ; DOWNY BROME ; COMMUNITY COMPOSITION ; SPECIES-DIVERSITY ; RESTORATION ; MANAGEMENT ; INVASION ; CHEATGRASS ; BACTERIA
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
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/2XILL650/349519
作者单位	[Lazarus, Brynne E.; Germino, Matthew J.] US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, Snake River Field Stn, Boise, ID 83702 USA
推荐引用方式 GB/T 7714	Lazarus, Brynne E.,Germino, Matthew J.. A chemical and bio-herbicide mixture increased exotic invaders, both targeted and non-targeted, across a diversely invaded landscape after fire[J]. United States Geological Survey,2021,24(2).
APA	Lazarus, Brynne E.,&Germino, Matthew J..(2021).A chemical and bio-herbicide mixture increased exotic invaders, both targeted and non-targeted, across a diversely invaded landscape after fire.APPLIED VEGETATION SCIENCE,24(2).
MLA	Lazarus, Brynne E.,et al."A chemical and bio-herbicide mixture increased exotic invaders, both targeted and non-targeted, across a diversely invaded landscape after fire".APPLIED VEGETATION SCIENCE 24.2(2021).