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DOI | 10.1007/s00442-012-2471-0 |
Ectomycorrhizal fungal succession coincides with shifts in organic nitrogen availability and canopy closure in post-wildfire jack pine forests | |
LeDuc, Stephen D.1,2; Lilleskov, Erik A.3; Horton, Thomas R.4; Rothstein, David E.1,2 | |
发表日期 | 2013-05-01 |
ISSN | 0029-8549 |
卷号 | 172期号:1页码:257-269 |
英文摘要 | Successional changes in belowground ectomycorrhizal fungal (EMF) communities have been observed with increasing forest stand age; however, mechanisms behind this change remain unclear. It has been hypothesized that declines of inorganic nitrogen (N) and increases of organic N influence changes in EMF taxa over forest development. In a post-wildfire chronosequence of six jack pine (Pinus banksiana) stands ranging in age from 5 to 56 years, we investigated EMF community composition and compared shifts in taxa with detailed soluble inorganic and organic N data. Taxa were identified by internal transcribed spacer rDNA sequencing, and changes in community composition evaluated with non-metric multi-dimensional scaling (NMDS). Dissimilarities in the community data were tested for correlations with N variables. We observed a successional shift along NMDS axis 1 from such taxa as Suillus brevipes and Thelephora terrestris in sites age 5 and 11 to species of Cortinarius and Russula, among others, in the four older sites. This change was positively correlated with soluble organic N (SON) (r (2) = 0.902, P = 0.033) and free amino-acid N (r (2) = 0.945, P = 0.021), but not inorganic N. Overall, our results show a successional shift of EMF communities occurring between stand initiation and canopy closure without a change in species of the dominant plant-host, and associated with SON and free amino-acid N in soil. It is uncertain whether EMF taxa are responding to these organic N forms directly, affecting their availability, or are ultimately responding to changes in other site variables, such as belowground productivity. |
英文关键词 | Ectomycorrhiza;Fungal diversity;Pinus banksiana;Organic nitrogen;Disturbance |
语种 | 英语 |
WOS记录号 | WOS:000317686800023 |
来源期刊 | OECOLOGIA |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/60964 |
作者单位 | 1.Michigan State Univ, Dept Forestry, E Lansing, MI 48824 USA; 2.Michigan State Univ, Ecol Evolutionary Biol & Behav Program, E Lansing, MI 48824 USA; 3.US Forest Serv, USDA, Forestry Sci Lab, Houghton, MI 49931 USA; 4.SUNY Coll Environm Sci & Forestry, Dept Environm & Forest Biol, Syracuse, NY 13210 USA |
推荐引用方式 GB/T 7714 | LeDuc, Stephen D.,Lilleskov, Erik A.,Horton, Thomas R.,et al. Ectomycorrhizal fungal succession coincides with shifts in organic nitrogen availability and canopy closure in post-wildfire jack pine forests[J]. 美国环保署,2013,172(1):257-269. |
APA | LeDuc, Stephen D.,Lilleskov, Erik A.,Horton, Thomas R.,&Rothstein, David E..(2013).Ectomycorrhizal fungal succession coincides with shifts in organic nitrogen availability and canopy closure in post-wildfire jack pine forests.OECOLOGIA,172(1),257-269. |
MLA | LeDuc, Stephen D.,et al."Ectomycorrhizal fungal succession coincides with shifts in organic nitrogen availability and canopy closure in post-wildfire jack pine forests".OECOLOGIA 172.1(2013):257-269. |
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