气候变化领域集成服务门户(CCPortal): Legacy effects of non-native Cytisus scoparius in glacial outwash soils: Potential impacts to forest soil productivity in western Washington

CCPortal

DOI	10.1016/j.foreco.2020.118733
	Legacy effects of non-native Cytisus scoparius in glacial outwash soils: Potential impacts to forest soil productivity in western Washington
	Slesak R.A.; Harrington T.B.; D'Amato A.W.; Carter D.R.
发表日期	2020
ISSN	0378-1127
英文摘要	Scotch broom (Cytisus scoparius (L.) Link) is a highly competitive, nonnative, leguminous shrub species of major concern in coast Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) forests of the Pacific Northwest that has potential to impact long-term soil productivity. We conducted a bioassay to assess the potential for legacy effects on soils (e.g., soil nutrient effects, soil seedbank, etc.) following Scotch broom removal and the potential for recovery over time. The bioassay was conducted using glacial-outwash soils from an existing Long-Term Soil Productivity study near Matlock, WA, USA, where Scotch broom had been removed or kept out for 0 (broom present), 4, 10, or 14 years. Soils from each broom removal duration were combined with fertilizer treatments to assess mechanisms of response of three native plant species: yarrow (Achillea millefolium L.), Roemer's fescue (Festuca idahoensis Elmer ssp. Roemeri), and coast Douglas-fir. There was evidence for negative soil legacy effects on Douglas-fir growth and biomass, which decreased with time since broom removal. Responses to the fertilizer treatments indicated the effect was not associated with reduced nutrient availability. In contrast, both yarrow and Roemer's fescue had significantly greater biomass in soil from where broom was recently present, which decreased with time since broom removal. Responses to the fertilizer treatments indicated that this positive legacy effect is associated with nutrient availability, likely increased N. Soils from 0 and 4 years since broom removal were estimated as having the potential to produce over 578,500 Scotch broom germinants ha−1. Our results demonstrate the potential for both negative and positive soil legacy effects of broom depending on the responding plant species. Combined effects of negative soil legacies and a large and viable seed bank from Scotch broom create growing conditions likely to hinder long-term productivity of Douglas-fir. © 2020
英文关键词	Allelopathy; Fertilization; Invasive species; Long-term soil productivity; Seedbank; Soil recovery
语种	英语
scopus关键词	Fertilizers; Forestry; Glacial geology; Nutrients; Plants (botany); Productivity; Combined effect; Growing conditions; Long term soil productivity; Nutrient availability; Pacific Northwest; Potential impacts; Pseudotsuga menziesii; Soil nutrients; Soils
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155651
作者单位	USDA Forest Service, Pacific Northwest Research Station, 3625 93rd Avenue Southwest, Olympia, WA 98512, United States; Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT 05405, United States; Department of Forest Resources and Environmental Conservation, Virginia Polytechnic Institute and State University, 228G Cheatham Hall, Blacksburg, VA 24060, United States
推荐引用方式 GB/T 7714	Slesak R.A.,Harrington T.B.,D'Amato A.W.,et al. Legacy effects of non-native Cytisus scoparius in glacial outwash soils: Potential impacts to forest soil productivity in western Washington[J],2020.
APA	Slesak R.A.,Harrington T.B.,D'Amato A.W.,&Carter D.R..(2020).Legacy effects of non-native Cytisus scoparius in glacial outwash soils: Potential impacts to forest soil productivity in western Washington.Forest Ecology and Management.
MLA	Slesak R.A.,et al."Legacy effects of non-native Cytisus scoparius in glacial outwash soils: Potential impacts to forest soil productivity in western Washington".Forest Ecology and Management (2020).