DOI: 10.1016/j.foreco.2013.01.009
Scopus记录号: 2-s2.0-84874346205
论文题名: Which factors influence the occurrence and density of tree microhabitats in Mediterranean oak forests?
作者: Regnery B. ; Paillet Y. ; Couvet D. ; Kerbiriou C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 295 起始页码: 118
结束页码: 125
语种: 英语
英文关键词: Biodiversity
; Mediterranean region
; Stand structure
; Time since last cutting
; Tree microhabitats
Scopus关键词: Basal area
; Cerambyx
; Dead wood
; Diameter class
; Forest stand
; Group selection
; Log volume
; Managed forest
; Mediterranean forest
; Mediterranean oak
; Mediterranean region
; Microhabitats
; Presence/absence
; Quercus ilex
; Rotation period
; Saproxylic
; Silvicultural practices
; Stand levels
; Stand structures
; Stem density
; Tree diameter
; Tree level
; Wood production
; Biodiversity
; Ecosystems
; Environmental protection
; Forestry
; bat
; biodiversity
; bird
; clearcutting
; coniferous forest
; conservation management
; deciduous forest
; diameter
; environmental factor
; forest management
; habitat availability
; harvesting
; insect
; Mediterranean environment
; microhabitat
; saproxylic organism
; silviculture
; snag
; species inventory
; stand structure
; Biodiversity
; Ecosystems
; Forestry
; Mediterranean
英文摘要: Managed forests have the potential to promote tree microhabitats and hence to conserve the biodiversity, especially of birds, bats, and saproxylic insects, associated with such features. Although the value of tree microhabitats for biodiversity has been described, surprisingly, the factors that explain the occurrence and density of tree microhabitats in managed forests remain poorly known, especially in Mediterranean forests. To address this gap, we studied the occurrence and density of nine types of tree microhabitats inventoried in 1630 trees and 59 forest stands: canopy dead wood; woodpecker cavities; non-woodpecker cavities (with a distinction between lower, medium, and upper cavities); Cerambyx cavities; loose barks or cracks; conks of fungi; and ivy. Each tree was described according to the presence/absence of microhabitats as well as tree diameter, vitality, and species. In each stand, structural variables (basal area, stem density, log volume, stand height, diameter class distribution) and the time since last cutting (i.e., the number of years since the last cutting) were assessed. At the tree level, large-diameter trees, snags, and non-coniferous species supported a higher richness of microhabitats than trees of small diameter, living trees, and conifers. Holm oak (Quercus ilex L.), which is a typical species of Mediterranean forests, exhibited a particularly high ability to host microhabitats. Tree diameter was the best predictor of the occurrence of most microhabitats (7 out of 9). We studied co-occurrences among microhabitats, but our results indicated that microhabitat types served poorly as proxies of other microhabitats due to frequent but unspecific positive relationships. At the stand level, time since last cutting was the best predictor of density of microhabitat-bearing trees and the occurrence of most tree microhabitats. The density of microhabitat-bearing trees was approximately 13 times higher in older stands (>90. years post-cutting) than in recently cut stands (<30. years). To maintain biodiversity in forests, we suggest that managers conserve large trees and snags and preferentially use holm oaks for wood production. Silvicultural practices should include a long rotation period and favor harvesting by group selection to maintain forest stands with a time since last cutting >90. years. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66660
Appears in Collections: 影响、适应和脆弱性
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作者单位: CNRS-MNHN-PARIS VI, UMR-7204 'Conservation des Espèces Restauration et Suivi des Populations', 55 Rue Buffon, 75005 Paris, France; Irstea, UR EFNO, Domaine des Barres, F-45290 Nogent-sur-Vernisson, France
Recommended Citation:
Regnery B.,Paillet Y.,Couvet D.,et al. Which factors influence the occurrence and density of tree microhabitats in Mediterranean oak forests?[J]. Forest Ecology and Management,2013-01-01,295