气候变化领域集成服务门户(CCPortal): Riparian vegetation recovery in a 23 year chronosequence of clear-cuts along boreal headwater streams

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DOI	10.1016/j.foreco.2019.04.010
	Riparian vegetation recovery in a 23 year chronosequence of clear-cuts along boreal headwater streams
	Newaz M.S.; Mallik A.U.; Mackereth R.W.
发表日期	2019
ISSN	0378-1127
起始页码	69
结束页码	83
卷号	443
英文摘要	Recovery of understory vegetation after clearcut harvesting has received much attention but little is known about the recovery of riparian vegetation after forest harvesting along headwater streams, despite the critical role vegetation plays in the protection of biodiversity and water quality. We investigated the impacts of clearcut harvesting on riparian plant communities and their recovery along headwater streams in boreal mixedwood forests of northwestern Ontario, Canada. We studied 30 headwater streams (width 1–3 m), 24 in clearcut sites harvested 3–23 years previously and 6 streams in reference 90–100 year-old mature (unharvested) forests. Each stream was studied at two locations: (i) within clearcut areas and (ii) within the downstream unharvested locations (at the buffer zones) of the larger stream into which the headwater streams flow. We quantified species richness, abundance, diversity and evenness of riparian understory vegetation at each site. We used a nested model and Nonmetric Multidimensional Scaling (NMS) to examine the effect of years since clearcut (age) on understory plant community change. We assessed the number of original, newly recruited and locally eliminated species based on species presence/absence data from the sampled quadrats in clearcuts, downstream unharvested forests and reference forests. We found that clearcut harvesting had no immediate impact on overall species richness or diversity, but it was associated with changes in species composition. The post-harvest habitats were often dominated by ruderal invasive species. Some late-seral species were locally eliminated and showed no sign of recovery 23 years after harvesting. We conclude that although clearcutting along headwater streams does not affect the overall species diversity, it changes species composition by locally eliminating some understory plants, which in turn may cause significant change in the ecological services they provide. Hence, it is important to recognize the sensitivity of headwater systems during forest harvesting and subsequent vegetation recovery. Avoiding ground disturbance in head water systems during forest management, careful selective/partial harvesting in riparian areas and seeding of fast growing native plants immediately after clearcutting may help mitigate potential adverse effects of forest management in headwater systems. © 2019
英文关键词	Boreal forest; Headwater system; Riparian buffer; Species composition; Understory vegetation
语种	英语
scopus关键词	Biodiversity; Harvesting; Recovery; Rivers; Seed; Vegetation; Water quality; Boreal forests; Headwater system; Riparian buffers; Species composition; Understory vegetation; Forestry; biodiversity; boreal forest; chronosequence; clearcutting; community composition; disturbance; forest management; harvesting; headwater; plant community; restoration ecology; riparian vegetation; water quality; Biodiversity; Harvesting; Plants; Recovery; Rivers; Canada; Ontario [Canada]
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156008
作者单位	Department of Biology, Lakehead University, Thunder Bay, Ontario P7B 5E1, Canada; Centre for Northern Forest Ecosystem Research, Ontario Ministry of Natural Resources and Forestry, 103–421 James Street S., Thunder Bay, Ontario P7E 2V6, Canada
推荐引用方式 GB/T 7714	Newaz M.S.,Mallik A.U.,Mackereth R.W.. Riparian vegetation recovery in a 23 year chronosequence of clear-cuts along boreal headwater streams[J],2019,443.
APA	Newaz M.S.,Mallik A.U.,&Mackereth R.W..(2019).Riparian vegetation recovery in a 23 year chronosequence of clear-cuts along boreal headwater streams.Forest Ecology and Management,443.
MLA	Newaz M.S.,et al."Riparian vegetation recovery in a 23 year chronosequence of clear-cuts along boreal headwater streams".Forest Ecology and Management 443(2019).