气候变化领域集成服务门户(CCPortal): Species-specific effects of the herbaceous layer on recruitment of woody species under different shading and precipitation conditions

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DOI	10.1016/j.foreco.2020.117864
	Species-specific effects of the herbaceous layer on recruitment of woody species under different shading and precipitation conditions
	Velasco N.; Becerra P.I.
发表日期	2020
ISSN	0378-1127
卷号	460
英文摘要	Herbs may affect the recruitment of woody species. However, most studies have evaluated the impact of one particular herb species or the herbaceous layer as a whole. It is less known if different herb species have different effects on recruitment of woody species, and whether these effects depend on environmental conditions. In this paper, we evaluated the effects of different native and exotic herb species on recruitment of nine woody species in central Chile, under different conditions of shading and precipitation. The experiment was carried out in an open ruderal area in Santiago, Chile. We conducted a factorial experiment with 360 1 × 1 m pots with monospecific crops of eight herb species and a control without herbs, two levels of irrigation (245 and 534 mm) simulating two precipitation regimes, and the presence or absence of artificial shade simulating a woody canopy. Nine woody species common to the region were sown in each pot. Luminosity (PAR), soil moisture, herb volume, richness of woody species and seedling density of woody species recruited were measured. The effects of herb species on woody species richness varied from neutral in the open condition to mainly negative in the shaded condition. Differences in irrigation did not modify the effects of herbs on species richness. The effects of herb species were more variable when woody species were considered individually. Negative and neutral effects predominated, although some positive effects were observed under shaded and wetter conditions. Our results suggest that different herb species have distinct effects on recruitment of specific woody species and species richness, which mainly depend on shade conditions and secondarily on the precipitation regime, and that herb-woody species interactions are highly specific. Thus, management focused in herb controlling should be species-specific, in terms of herb and woody species, and dependent on climate and woody cover. © 2020 Elsevier B.V.
英文关键词	Herb species; Plant-plant interactions; Sclerophyllous species; Semiarid climate; Shading; Woody regeneration
语种	英语
scopus关键词	Forestry; Irrigation; Soil moisture; Herb species; Plant interactions; Sclerophyllous species; Semi-arid climate; Shading; Woody regeneration; Plants (botany); herb; intraspecific interaction; precipitation (climatology); semiarid region; species richness; woody plant; Chile; Control Systems; Forestry; Herbs; Impact; Irrigation; Precipitation; Recruitment; Chile; Metropolitana
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/155489
作者单位	Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Santiago, Chile; Departamento de Ecosistemas y Medio Ambiente, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Santiago, Chile; Center of Applied Ecology and Sustainability (CAPES), Chile
推荐引用方式 GB/T 7714	Velasco N.,Becerra P.I.. Species-specific effects of the herbaceous layer on recruitment of woody species under different shading and precipitation conditions[J],2020,460.
APA	Velasco N.,&Becerra P.I..(2020).Species-specific effects of the herbaceous layer on recruitment of woody species under different shading and precipitation conditions.Forest Ecology and Management,460.
MLA	Velasco N.,et al."Species-specific effects of the herbaceous layer on recruitment of woody species under different shading and precipitation conditions".Forest Ecology and Management 460(2020).