DOI: 10.1016/j.foreco.2017.09.027
Scopus记录号: 2-s2.0-85029504693
论文题名: Salvage logging of mountain birch after geometrid outbreaks: Ecological context determines management outcomes
作者: Vindstad O.P.L. ; Jepsen J.U. ; Klinghardt M. ; Ek M. ; Ims R.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 405 起始页码: 81
结束页码: 91
语种: 英语
英文关键词: Basal sprout
; Field experiment
; Herbivory
; Sapling
; Site quality
; Stand recovery
英文摘要: Outbreaks of pest insects occasionally cause mortality of entire forest stands. Salvage logging of affected stands is the most common management response to such events. Logging may aid stand recovery by increasing the production and establishment of saplings, or stimulating the production of basal sprouts in sprouting tree species. However, the outcome of logging may depend on the ecological context in which it is implemented, with both herbivory and local growing conditions being potentially important factors. We conducted a field experiment to assess how logging affects recovery by saplings and sprouts in stands of mountain birch that have been damaged by outbreaks of geometrid moths. The study was conducted at the two locations Luftjok and Bugøyfjord in subarctic Norway, where moth outbreaks have caused widespread mortality of mountain birch during the last two decades. Logging generally caused a strong increase in the production of basal sprouts, and also improved sprout growth in Luftjok, resulting in a substantial production of new stems in the logging plots at this location within the six-year period of the study. In Bugøyfjord, sprout growth was retarded in logging plots compared to controls, resulting in complete failure to produce new stems during the study period. This appears to have been caused by ungulate browsing, possibly in interaction with regional, geologically determined, gradients in growing conditions. The outcome of logging also depended on local site quality, with limited sprouting occuring in rich meadow type stands, which traditionally have been assumed to have low capacity for sprout production. Birch saplings were less abundant in logging plots than in controls by the end of the study, especially in Bugøyfjord, suggesting that logging did not improve sapling production. We conclude that logging may stimulate damaged mountain birch stands to recover by means of basal sprouting, but that the positive effects of logging may be reduced by browsing in some areas. Logging should also be practiced with care in rich meadow type stands, which have limited capacity for sprouting. © 2017 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64069
Appears in Collections: 影响、适应和脆弱性
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作者单位: University of Tromsø, Department of Arctic and Marine Biology, Dramsveien 201, Tromsø, Norway; Norwegian Institute for Nature Research, Fram Centre, Tromsø, Norway; University of Oldenburg, Institute for Biology and Environmental Sciences, Oldenburg, Germany
Recommended Citation:
Vindstad O.P.L.,Jepsen J.U.,Klinghardt M.,et al. Salvage logging of mountain birch after geometrid outbreaks: Ecological context determines management outcomes[J]. Forest Ecology and Management,2017-01-01,405