气候变化领域集成服务门户(CCPortal): Landscape structure influences browsing on a keystone tree species in conservation areas

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DOI	10.1016/j.foreco.2019.117724
	Landscape structure influences browsing on a keystone tree species in conservation areas
	Komonen A.; Tuominen L.; Purhonen J.; Halme P.
发表日期	2020
ISSN	0378-1127
卷号	457
英文摘要	Aspen is a keystone species in boreal forests. The future of aspen in many conservation areas is threatened by ungulate browsing. Our aim was to study the effect of browsing on aspen regeneration and population structure in conservation areas in Central Finland, and the effect of surrounding landscape structure on browsing. Aspen density varied greatly among and within conservation areas. In about half of the conservation areas, middle-sized aspens were scarce or missing, which indicates heavy browsing in the recent past. In addition, the number of dead, large aspens in advanced decay stages were rare. Browsing pressure varied greatly among the areas, but on average, a bit more than half of the living aspens had been browsed. Landscape structure influenced browsing so that increasing proportion of farmland within 1 km and 3 km of the conservation areas decreased browsing pressure. The poor recruitment of aspen in many conservation areas jeopardizes the accumulation of large living and dead aspens. This means that many aspen-associated threatened species are in the risk of local extinction, unless aspen recruitment is enhanced by management. © 2019 Elsevier B.V.
关键词	Arches Biodiversity Reforestation Alces alces Boreal forests Disturbance Landscape Populus tremula Conservation biodiversity boreal forest browsing conservation management deciduous forest disturbance habitat conservation keystone species landscape ecology landscape structure population structure protected area regeneration Accumulation Biodiversity Conservation Populus Tremula Pressure Recruitment Reforestation Keski-Suomi Alces alces Populus Populus tremula Ungulata
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133130
推荐引用方式 GB/T 7714	Komonen A.,Tuominen L.,Purhonen J.,et al. Landscape structure influences browsing on a keystone tree species in conservation areas[J]. Forest Ecology and Management,2020,457.
APA	Komonen A.,Tuominen L.,Purhonen J.,&Halme P..(2020).Landscape structure influences browsing on a keystone tree species in conservation areas.,457.
MLA	Komonen A.,et al."Landscape structure influences browsing on a keystone tree species in conservation areas".457(2020).