气候变化领域集成服务门户(CCPortal): Avian top-down control affects invertebrate herbivory and sapling growth more strongly than overstorey species composition in temperate forest fragments

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DOI	10.1016/j.foreco.2019.03.055
	Avian top-down control affects invertebrate herbivory and sapling growth more strongly than overstorey species composition in temperate forest fragments
	Dekeukeleire D.; van Schrojenstein Lantman I.M.; Hertzog L.R.; Vandegehuchte M.L.; Strubbe D.; Vantieghem P.; Martel A.; Verheyen K.; Bonte D.; Lens L.
发表日期	2019
ISSN	0378-1127
起始页码	1
结束页码	9
卷号	442
英文摘要	To better understand natural regeneration of trees and forest dynamics it is important to gain insight into the drivers of invertebrate herbivory. In mature forests, associational resistance of trees resulting from a high diversity of neighbouring trees is common, and can have cascading effects on tree growth through resource concentration effects or through changes in top-down control. While the underlying biological processes are known to be influenced by the forest's spatial properties, we lack insights on how resource concentration, top-down control and fragmentation jointly affect sapling performance in fragmented landscapes. We therefore experimentally quantified effects of the proportion of conspecific trees in the overstorey (resource concentration), avian top-down control (natural enemies) and distance to the forest edge on invertebrate herbivory levels and sapling growth. The assessments were made on planted saplings of Fagus sylvatica, Quercus robur and Quercus rubra in 53 experimental plots and birds were excluded by means of exclosures from a subset of these saplings. Excluding avian top-down control increased herbivory on each tree species. Increased herbivory led to decreased sapling growth in F. sylvatica and Q. rubra. On Q. robur saplings, top-down control was stronger closer to the forest edge. Furthermore, in this species, herbivory inside the exclosures increased with an increasing proportion of conspecific trees in the overstorey, while such a resource concentration effect was not observed outside the exclosures. Our results show the importance for forest management of conserving insectivorous birds and promoting a mixed overstorey, which can decrease sapling herbivory when bird abundance is low. More generally, our study provides insight into the complex, multitrophic interactions that drive sapling growth in forest stands located within fragmented landscapes. © 2019 Elsevier B.V.
英文关键词	Associational resistance; Edge effects; Enemies Hypothesis; Fagus sylvatica; Insectivorous birds; Quercus robur; Quercus rubra; Resource Concentration Hypothesis; Tritrophic interactions; Trophic cascades
语种	英语
scopus关键词	Birds; Edge effect; Enemies Hypothesis; Fagus sylvatica; Quercus robur; Quercus rubra; Resource Concentration Hypothesis; Tritrophic interactions; Trophic cascades; Reforestation; abundance; bird; community composition; coniferous tree; conspecific; deciduous tree; edge effect; forest dynamics; forest edge; forest management; growth; habitat fragmentation; herbivory; hypothesis testing; invertebrate; overstory; temperate forest; top-down control; tritrophic interaction; trophic cascade; Birds; Control Systems; Fagus Sylvatica; Growth; Quercus Robur; Quercus Rubra; Reforestation; Trees; Aves; Fagus sylvatica; Invertebrata; Quercus robur; Quercus rubra
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/156029
作者单位	Ghent University, Department of Biology, Terrestrial Ecology Unit, K. L. Ledeganckstraat 35, Ghent, 9000, Belgium; Ghent University, Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Salisburylaan 133, 9820 Merelbeke, Belgium; Ghent University, Department of Environment, Forest & Nature Lab, Geraardsbergsesteenweg 267, 9090 Melle-Gontrode, Belgium
推荐引用方式 GB/T 7714	Dekeukeleire D.,van Schrojenstein Lantman I.M.,Hertzog L.R.,et al. Avian top-down control affects invertebrate herbivory and sapling growth more strongly than overstorey species composition in temperate forest fragments[J],2019,442.
APA	Dekeukeleire D..,van Schrojenstein Lantman I.M..,Hertzog L.R..,Vandegehuchte M.L..,Strubbe D..,...&Lens L..(2019).Avian top-down control affects invertebrate herbivory and sapling growth more strongly than overstorey species composition in temperate forest fragments.Forest Ecology and Management,442.
MLA	Dekeukeleire D.,et al."Avian top-down control affects invertebrate herbivory and sapling growth more strongly than overstorey species composition in temperate forest fragments".Forest Ecology and Management 442(2019).