globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13194
论文题名:
Impacts of forestry planting on primary production in upland lakes from north-west Ireland
作者: Stevenson M.A.; Mcgowan S.; Anderson N.J.; Foy R.H.; Leavitt P.R.; Mcelarney Y.R.; Engstrom D.R.; Pla-Rabés S.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期:4
起始页码: 1490
结束页码: 1504
语种: 英语
英文关键词: Afforestation ; Carotenoid pigments ; Catchment disturbance ; Forest plantations ; Land-use change
Scopus关键词: afforestation ; algal community ; carotenoid ; environmental disturbance ; lake ; land use change ; plantation forestry ; primary production ; upland region ; Ireland ; algae ; Cryptophyta ; Cyanobacteria ; carbon ; fertilizer ; nitrogen ; pigment ; analysis ; Cryptophyta ; cyanobacterium ; diatom ; forestry ; Ireland ; isolation and purification ; lake ; microbiology ; sediment ; Carbon ; Cryptophyta ; Cyanobacteria ; Diatoms ; Fertilizers ; Forestry ; Geologic Sediments ; Ireland ; Lakes ; Nitrogen ; Pigments, Biological
英文摘要: Planted forests are increasing in many upland regions worldwide, but knowledge about their potential effects on algal communities of catchment lakes is relatively unknown. Here, the effects of afforestation were investigated using palaeolimnology at six upland lake sites in the north-west of Ireland subject to different extents of forest plantation cover (4-64% of catchment area). 210Pb-dated sediment cores were analysed for carotenoid pigments from algae, stable isotopes of bulk carbon (δ13C) and nitrogen (δ15N), and C/N ratios. In lakes with >50% of their catchment area covered by plantations, there were two- to sixfold increases in pigments from cryptophytes (alloxanthin) and significant but lower increases (39-116%) in those from colonial cyanobacteria (canthaxanthin), but no response from biomarkers of total algal abundance (β-carotene). In contrast, lakes in catchments with <20% afforestation exhibited no consistent response to forestry practices, although all lakes exhibited fluctuations in pigments and geochemical variables due to peat cutting and upland grazing prior to forest plantation. Taken together, patterns suggest that increases in cyanobacteria and cryptophyte abundance reflect a combination of mineral and nutrient enrichment associated with forest fertilization and organic matter influx which may have facilitated growth of mixotrophic taxa. This study demonstrates that planted forests can alter the abundance and community structure of algae in upland humic lakes of Ireland and Northern Ireland, despite long histories of prior catchment disturbance. Copyright © 2016 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61445
Appears in Collections:影响、适应和脆弱性

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作者单位: School of Geography, University of Nottingham, University Park, Nottingham, United Kingdom; School of Geography, University of Nottingham, Malaysia Campus, Jalan Broga, Semenyih, Selangor Darul Ehsan, Malaysia; Department of Geography, Loughborough University, Leicestershire, United Kingdom; School of Biological Sciences, Queen's University Belfast, Belfast, United Kingdom; Limnology Laboratory, Biology Department, University of Regina, Regina, SK, Canada; Institute of Environmental Change and Society, University of Regina, Regina, SK, Canada; Agri-Environment Branch, Agri-Food and Biosciences Institute, Newforge Lane, Belfast, United Kingdom; St. Croix Watershed Research Station, Science Museum of Minnesota, Marine on St. Croix, MN, United States; Ecological Research Center and Forestry Applications (CREAF), Campus de Bellaterra (UAB), Cerdanyola del Vallès, Barcelona, Spain

Recommended Citation:
Stevenson M.A.,Mcgowan S.,Anderson N.J.,et al. Impacts of forestry planting on primary production in upland lakes from north-west Ireland[J]. Global Change Biology,2016-01-01,22(4)
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