DOI: 10.1016/j.foreco.2013.05.043
Scopus记录号: 2-s2.0-84879528329
论文题名: Canopy openings created by partial cutting increase growth rates and maintain the cover of three Cladonia species in the Canadian boreal forest
作者: Boudreault C. ; Zouaoui S. ; Drapeau P. ; Bergeron Y. ; Stevenson S.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 304 起始页码: 473
结束页码: 481
语种: 英语
英文关键词: Clearcuts
; Lichen growth
; Lichen transplants
; Mat-forming lichens
; Partial cuts
; Woodland caribou
Scopus关键词: Black spruce boreal forests
; Canadian boreal forest
; Clearcuts
; Mat-forming lichens
; Partial cuts
; Photosynthetically active radiation
; Species conservations
; Woodland caribou
; Conservation
; Fungi
; Growth rate
; Humidity control
; Forestry
; boreal forest
; canopy
; clearcutting
; cutting
; deer
; forest management
; growth rate
; humidity
; lichen
; microclimate
; photosynthetically active radiation
; species conservation
; stand structure
; temperature effect
; woodland
; Conservation
; Forestry
; Fungi
; Growth Rate
; Humidity Control
; Lichens
; Canada
; Quebec [Canada]
英文摘要: In boreal forests partial cutting is often proposed as an alternative to the widespread use of clearcutting to better conciliate forest management with species conservation. A partial cutting experiment was implemented in black spruce boreal forests of western Québec, and the responses of three terricolous lichen species (Cladonia stellaris, C. mitis, and C. rangiferina) to three different treatments of different removal intensities (old unharvested forest stands and old forests treated by partial cutting and clearcutting) were studied. We used transplants of lichens to record growth rate over a period of 15. months, and we also recorded microclimatic variables (thallus temperature, thallus humidity, and photosynthetically active radiation [PAR]) directly at the sampling sites. We observed reduced growth rates in C. stellaris and C. rangiferina transplants located in untreated control plots compared with transplants located either in stands treated with partial cutting and or stands treated by clearcutting. We also found that lichen growth differed significantly across season, with a higher growth rate during the first summer compared to the other seasons. Lichen cover and frequency (presence or absence) of the three Cladonia species did not differ significantly between partial cut plots and control plots. PAR and thallus temperature were significantly lower in control plots, while thallus humidity was significantly higher in control plots. Thallus humidity recorded in the morning (between 6 am and 9 am) showed a reversed pattern, with lower values in control plots compared with partial cutting and clearcutting plots. Our results show that canopy openings in the partial cuttings had a positive influence on the growth of Cladonia species, probably through an increase in the quantity of light and humidity reaching the thalli early in the morning. Furthermore, canopy openings resulting from partial cuttings can maintain pre-established lichen cover at levels comparable to what is observed in our unharvested control stands. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66519
Appears in Collections: 影响、适应和脆弱性
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作者单位: Centre d'Étude de la Forêt and the Natural Sciences and Engineering Research Council, UQAM-UQAT Industrial Chair in Sustainable Forest Management, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montréal, QC H3C 3P8, Canada; University of Northern British Columbia, Ecosystem Science and Management Program, 3333 University Way, Prince George, BC V2N 4Z9, Canada
Recommended Citation:
Boudreault C.,Zouaoui S.,Drapeau P.,et al. Canopy openings created by partial cutting increase growth rates and maintain the cover of three Cladonia species in the Canadian boreal forest[J]. Forest Ecology and Management,2013-01-01,304