DOI: 10.1016/j.foreco.2014.12.012
Scopus记录号: 2-s2.0-84921059418
论文题名: Soil microbial community response and recovery following group selection harvest: Temporal patterns from an experimental harvest in a US northern hardwood forest
作者: Lewandowski T.E. ; Forrester J.A. ; Mladenoff D.J. ; Stoffel J.L. ; Gower S.T. ; D'Amato A.W. ; Balser T.C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 340 起始页码: 82
结束页码: 94
语种: 英语
英文关键词: Group selection harvest
; Northern hardwoods
; PLFA
; Soil microbial community
; Wisconsin
Scopus关键词: Bacteria
; Carbon
; Ecosystems
; Fatty acids
; Forestry
; Fungi
; Hardwoods
; Microorganisms
; Phospholipids
; Soils
; Group selection
; Northern hardwoods
; PLFA
; Soil microbial community
; WISCONSIN
; Harvesting
; arbuscular mycorrhiza
; bacterium
; community response
; deciduous tree
; forest ecosystem
; forest soil
; fungus
; gap dynamics
; soil microorganism
; temporal analysis
; Carbon
; Forests
; Harvesting
; Microbiology
; Nutrients
; Soil
; Wisconsin
; United States
; Wisconsin
; Acer saccharum
; Actinobacteria (class)
; Fungi
; Posibacteria
英文摘要: Forest harvesting and the associated loss of nutrients and carbon has the potential to negatively affect the soil microbial community, which plays a significant role in the health and productivity of the forest ecosystem. We used an experiment to evaluate the effects of group selection using whole-tree harvesting on the soil microbial community in a second growth northern hardwood forest dominated by sugar maple (Acer saccharum Marsh.) in northern Wisconsin, USA. We compared the response of the soil microbial community in 200m2 and 380m2 harvested gaps to unharvested controls during the spring and summer in the first two years post-harvest, and continued to monitor changes in the soil microbial communities and microenvironment in 380m2 gaps in years four, five, and seven post-harvest. Changes in community size and composition were assessed using phospholipid fatty acid (PLFA) analysis. We found that the abundance of arbuscular mycorrhizal fungi initially decreased following harvest, while abundance of anaerobic and gram positive bacteria, and the cyclo/pre-cyclo microbial stress ratio increased; responses that can be linked to microclimatic variability and resource accessibility. Neither actinomycete bacteria nor saprotrophic fungi exhibited an initial response to harvest, but in later years, we observed a decrease in actinomycetes and an increase in fungal abundance, suggesting a competitive interaction between the two main complex carbon-utilizing microbial groups. Canopy gap size had a minimal effect on the soil microbial community, resulting in a higher microbial stress ratio in 200m2 gaps. The microbial community exhibited seasonal and yearly fluctuation, which reinforces the need for repeated sampling over multiple seasons to correctly interpret management effects. Despite the large amount of seasonal and yearly variability, we began to see signs of recovery in the soil microbial community between two and four years post-harvest. We conclude that group selection accomplished via whole-tree harvesting of this size and scale does not result in long-term effects on the soil microbial community in this temperate northern hardwood forest. © 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65554
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, WI, United States; Department of Biology and Chemistry, Upper Iowa University, Fayette, IA, United States; Department of Forest Resources, University of Minnesota, St. Paul, MN, United States; Department of Soil Science, University of Wisconsin, Madison, WI, United States
Recommended Citation:
Lewandowski T.E.,Forrester J.A.,Mladenoff D.J.,et al. Soil microbial community response and recovery following group selection harvest: Temporal patterns from an experimental harvest in a US northern hardwood forest[J]. Forest Ecology and Management,2015-01-01,340