气候变化领域集成服务门户(CCPortal): Near-natural forests harbor richer saproxylic beetle communities than those in intensively managed forests

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DOI	10.1016/j.foreco.2020.118124
	Near-natural forests harbor richer saproxylic beetle communities than those in intensively managed forests
	Jacobsen R.M.; Burner R.C.; Olsen S.L.; Skarpaas O.; Sverdrup-Thygeson A.
发表日期	2020
ISSN	0378-1127
卷号	466
英文摘要	Globally, boreal forests cover 33 percent of Earth's forested area, constitute the largest terrestrial carbon source, and house an important biodiversity of forest-dependent species, many of which are saproxylic taxa reliant on a wide variety of dead wood. This dead wood is most prevalent in old-growth forest, yet intensive management means that little old growth is left, and the remaining forests rarely attain the necessary age and structure to resemble these original forests. There is increasing recognition, however, that forests that have not been subjected to modern, stand-replacing harvest methods (like clear-cutting), and in which management activities are no longer occurring, may be able to provide habitat similar to old-growth forest for many species (older mean age, higher deadwood volumes, and more age-class heterogeneity). These are called ‘near-natural’ forests. We use linear mixed models and redundancy analysis (RDA) to compare beetle species richness and community composition using a large, mixed data set, containing more than one third of all beetle species known from Norway, from window trap records in three types of forest: intensively managed mature stands, recent clear-cuts, and ‘near-natural forests’. Even though location, study substrate and other sampling details vary substantially between sites, the signal from management still comes out as a significant factor explaining the patterns on beetle diversity. We find that species richness of saproxylic, natural-forest indicator, and red-listed beetle species is higher in both near-natural forests and recent clear-cuts than in managed mature forests. Community composition also differs significantly between the three forest types, and these differences are correlated with forest age and volume at the landscape (1 km radius) level. These findings provide support for the idea that near-natural forests provide habitats that are distinct from those in managed forests and which are important for species of conservation concern. Clear-cuts briefly harbor some of these same species, probably due to the sun-exposed coarse woody debris (CWD) that is available immediately after felling, but this effect is transient. Conservation of existing near-natural forests, many of which are currently without legal protection, should therefore be prioritized. © 2020 The Authors
关键词	Biodiversity Conservation Ecosystems Living systems studies Redundancy Clear cuts Coleoptera Indicator species Landscape scale Natural forests Redundancy analysis (RDA)Saproxylic Forestry beetle biodiversity bioindicator clearcutting coarse woody debris community composition conservation status dead wood forest ecosystem forest management growth old-growth forest species richness Biodiversity Conservation Dead Wood Ecosystems Forestry Forests Growth Management Norway Coleoptera
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/132827
推荐引用方式 GB/T 7714	Jacobsen R.M.,Burner R.C.,Olsen S.L.,et al. Near-natural forests harbor richer saproxylic beetle communities than those in intensively managed forests[J]. Forest Ecology and Management,2020,466.
APA	Jacobsen R.M.,Burner R.C.,Olsen S.L.,Skarpaas O.,&Sverdrup-Thygeson A..(2020).Near-natural forests harbor richer saproxylic beetle communities than those in intensively managed forests.,466.
MLA	Jacobsen R.M.,et al."Near-natural forests harbor richer saproxylic beetle communities than those in intensively managed forests".466(2020).