气候变化领域集成服务门户(CCPortal): Proximity to roads reduces acorn dispersal effectiveness by rodents: Implication for forest regeneration and management

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DOI	10.1016/j.foreco.2018.11.029
	Proximity to roads reduces acorn dispersal effectiveness by rodents: Implication for forest regeneration and management
	Chen W.; Xie Z.; Zhou Y.
发表日期	2019
ISSN	0378-1127
起始页码	625
结束页码	632
卷号	433
英文摘要	Globally, the aggregate length of roads exceeds 64 million km and 90.7% of protected areas are disturbed by road penetration, and therefore understanding how road networks impact species and ecosystem processes is highly relevant to applied conservation ecology. Among various effects on wildlife, roads may disrupt the interaction between plants and their animal-mediated seed dispersers, compromising forest regeneration and composition. Here, using the acorn-rodent system, we quantified to what extent rodent functions on seed dispersal are modified by roads over two years (i.e. 2013 and 2014). Road had negative effects on seed-dispersal services provided by rodents, with an approximate 30% reduction of seed dispersal effectiveness (SDE) and 50% reductions of dispersal distance in proximity to the road. These detrimental effects gradually declined along a gradient from the roadside towards forest interior. Declines of rodent abundance in proximity to the road seem to induce these depressed seed dispersal functions. Although the influential magnitudes of roads on SDE were similar in both years, its influential magnitudes on seed dispersal were stronger in 2014 which indicates the more negative impacts of road encroachment on seed dispersal services. Crucially, no tagged seeds were dispersed across the road, implying that it imposed a barrier effect on animal-mediated seed dispersal and plant recruitment. Given wildlife's key roles in plant recruitment, we conclude that the ever-expanding effect of roads on animal-mediated seed dispersal may ultimately cause profound changes in forest composition and structure across diverse ecosystems, on a global scale. © 2018 Elsevier B.V.
英文关键词	Barrier effect; Forest regeneration; Road effect zone; Rodent; Seed dispersal effectiveness
语种	英语
scopus关键词	Conservation; Ecosystems; Mammals; Reforestation; Roads and streets; Barrier effects; Forest regeneration; Road-effect zones; Rodent; Seed dispersal; Seed; abundance; conservation management; ecosystem function; ecosystem service; human activity; natural barrier; plant; population decline; protected area; regeneration; roadside environment; rodent; seed dispersal; wildlife management; Conservation; Distance; Ecosystems; Mammals; Recruitment; Reforestation; Roads; Animalia; Rodentia
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/156238
作者单位	State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
推荐引用方式 GB/T 7714	Chen W.,Xie Z.,Zhou Y.. Proximity to roads reduces acorn dispersal effectiveness by rodents: Implication for forest regeneration and management[J],2019,433.
APA	Chen W.,Xie Z.,&Zhou Y..(2019).Proximity to roads reduces acorn dispersal effectiveness by rodents: Implication for forest regeneration and management.Forest Ecology and Management,433.
MLA	Chen W.,et al."Proximity to roads reduces acorn dispersal effectiveness by rodents: Implication for forest regeneration and management".Forest Ecology and Management 433(2019).