气候变化领域集成服务门户(CCPortal): Forest management, canopy cover and geographical distance affect saproxylic beetle communities of small-diameter beech deadwood

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DOI	10.1016/j.foreco.2020.118152
	Forest management, canopy cover and geographical distance affect saproxylic beetle communities of small-diameter beech deadwood
	Hardersen S.; Macagno A.L.M.; Chiari S.; Audisio P.; Gasparini P.; Lo Giudice G.; Nardi G.; Mason F.
发表日期	2020
ISSN	0378-1127
卷号	467
英文摘要	Beetles (Coleoptera) are the most diverse and species-rich insect order in saproxylic communities, and play a key role in forest dynamics. To prioritize conservation measures, a clear understanding is needed of what habitat features are the most important for beetles that depend on deadwood. Here, we investigate (i) how the assemblages of saproxylic beetles emerging from small-diameter beech deadwood (Fagus sylvatica L.) are influenced by several environmental factors and type of forest management, and (ii) if geographical distance of the investigated sites influences the similarity of these saproxylic beetle assemblages. We visited 10 high beech forest stands along a latitudinal gradient from northern to southern Italy, and collected 200 logs of 50 cm length, 12 ± 2 cm diameter, and Hunter's decay class 2, from deadwood lying on the forest floor. Logs were stored in ex-situ emergence traps, in common garden conditions, from April to September, and individuals emerging from the deadwood were collected weekly. A total of 2571 beetles were collected, including several species which were either threatened, firstly recorded or endemic. We found that, compared to even-aged stands, forests managed to increase structural heterogeneity (uneven-aged high forests, and former coppice stands converted to high forest), with closed canopy, were colonized by the richest and most abundant saproxylic beetle assemblages. Additionally, we observed distance decay of similarity between sites, indicating geographical structure in community composition. Our findings have important implications for biodiversity conservation in beech forests: (1) small-diameter deadwood hosts a rich biodiversity of Coleoptera and should therefore be left on the ground; (2) forest management practices should aim at preserving or restoring structural heterogeneity and closed canopies; (3) these conservation measures should be carried out along the entire area of occurrence of beech forests, due to turnover in species composition with geographical distance. © 2020 Elsevier B.V.
关键词	Biodiversity Conservation Biodiversity conservation Community composition Conservation measures Environmental factors Forest management practices Geographical structure Latitudinal gradients Structural heterogeneity Forestry beetle biodiversity community composition conservation status coppice dead wood forest canopy forest cover forest dynamics forest floor forest management Biodiversity Conservation Diameter Distance Fagus Forestry Forests Insects Italy Coleoptera Fagus Fagus sylvatica Hexapoda
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/132799
推荐引用方式 GB/T 7714	Hardersen S.,Macagno A.L.M.,Chiari S.,et al. Forest management, canopy cover and geographical distance affect saproxylic beetle communities of small-diameter beech deadwood[J]. Forest Ecology and Management,2020,467.
APA	Hardersen S..,Macagno A.L.M..,Chiari S..,Audisio P..,Gasparini P..,...&Mason F..(2020).Forest management, canopy cover and geographical distance affect saproxylic beetle communities of small-diameter beech deadwood.,467.
MLA	Hardersen S.,et al."Forest management, canopy cover and geographical distance affect saproxylic beetle communities of small-diameter beech deadwood".467(2020).