气候变化领域集成服务门户(CCPortal): Direct seeding for restoration of mixed oak forests: Influence of distance to forest edge, predator-derived repellent and acorn size on seed removal by granivorous rodents

CCPortal

DOI	10.1016/j.foreco.2020.118484
	Direct seeding for restoration of mixed oak forests: Influence of distance to forest edge, predator-derived repellent and acorn size on seed removal by granivorous rodents
	Villalobos A.; Schlyter F.; Olsson G.; Witzell J.; Löf M.
发表日期	2020
ISSN	0378-1127
卷号	477
英文摘要	Restoration of mixed oak forest in northern temperate regions is important for biodiversity and for adaptation of forest management to climate change. Direct seeding has been considered as a cost-effective method for the assisted regeneration of oaks. However, removal of acorns by granivorous rodents hinders its application. Patterns of acorn removal can vary with habitat type, presence of predators, and acorn size. In this field study, we tested the effects of distance to forest edge, predator excrement as a repellent, and acorn size on the performance of direct-seeded oak in southern Sweden. The experiment was carried out at two different sites. Our hypotheses were: (i) in clear-cuts, acorn removal is higher closer to the forest edge compared to open areas, (ii) treatment with predator excrement reduces acorn removal without affecting germination, and (iii) larger acorns will be removed more readily than smaller acorns. Finally, we also investigated if seedlings from larger acorns survive better and grow taller compared to smaller acorns in relation to habitat structure and predator excrement as repellent. Acorn removal differed at the two sites. At Skrylle (older clear-cut), no forest edge effects were found. At Klåveröd (new clear-cut site), our results suggest that removal of acorns was higher in the open clear-cut due to the presence of large slash piles. Less vegetation coverage correlated with lower rates of acorn removal, except near slash piles. Our results therefore suggest that forest managers should reduce understory vegetation and avoid slash piles during direct seeding of oak. Mink excrement failed to protect acorns against removal, but did not reduce acorn germination. Bigger acorns produced taller seedlings but did not enhance overall woodland establishment due to their higher removal rate. Our results further suggest a potential food satiation effect due to an extra supply of additional food. Satiation manipulation might potentially be a method of mitigating the impact of seed predation by granivorous rodents during the direct seeding of oak, but such an approach requires further research before it could be recommended. © 2020 The Authors
英文关键词	Clear-cut; Pest control; Quercus; Regeneration; Repellent; Sowing
语种	英语
scopus关键词	Biodiversity; Climate change; Cost effectiveness; Cultivation; Ecosystems; Mammals; Piles; Reforestation; Restoration; Vegetation; Cost-effective methods; Forest managers; Habitat structures; ITS applications; Mixed-oak forests; Temperate regions; Understory vegetation; Vegetation coverage; Conservation; biodiversity; climate change; deciduous forest; deciduous tree; forest edge; forest management; habitat structure; removal experiment; restoration ecology; rodent; seed; vegetation cover; Biodiversity; Cost Effectiveness; Cultivation; Ecosystems; Mammals; Reforestation; Sweden; Mustela; Quercus; 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/154984
作者单位	Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Box 49, Alnarp, 23053, Sweden; Excellent Team for Mitigation, Faculty of Forestry & Wood Sciences, Czech University of Life Sciences Prague, Kamycka 129, Prague 6, Suchdol, 16521, Czech Republic; Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, 90183, Sweden; Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, Alnarp, 230 53, Sweden
推荐引用方式 GB/T 7714	Villalobos A.,Schlyter F.,Olsson G.,et al. Direct seeding for restoration of mixed oak forests: Influence of distance to forest edge, predator-derived repellent and acorn size on seed removal by granivorous rodents[J],2020,477.
APA	Villalobos A.,Schlyter F.,Olsson G.,Witzell J.,&Löf M..(2020).Direct seeding for restoration of mixed oak forests: Influence of distance to forest edge, predator-derived repellent and acorn size on seed removal by granivorous rodents.Forest Ecology and Management,477.
MLA	Villalobos A.,et al."Direct seeding for restoration of mixed oak forests: Influence of distance to forest edge, predator-derived repellent and acorn size on seed removal by granivorous rodents".Forest Ecology and Management 477(2020).