globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-014-9991-0
Scopus记录号: 2-s2.0-84904798779
论文题名:
Ecoenzymatic stoichiometry and microbial processing of organic matter in northern bogs and fens reveals a common P-limitation between peatland types
作者: Hill B.H.; Elonen C.M.; Jicha T.M.; Kolka R.K.; Lehto L.L.P.; Sebestyen S.D.; Seifert-Monson L.R.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 120, 期:2018-01-03
起始页码: 203
结束页码: 224
语种: 英语
英文关键词: Decomposition ; Ecoenzymes ; Peat ; Soil ; Stoichiometry
英文摘要: We compared carbon (C), nitrogen (N), and phosphorus (P) concentrations in atmospheric deposition, runoff, and soils with microbial respiration [dehydrogenase (DHA)] and ecoenzyme activity (EEA) in an ombrotrophic bog and a minerotrophic fen to investigate the environmental drivers of biogeochemical cycling in peatlands at the Marcell Experimental Forest in northern Minnesota, USA. Ecoenzymatic stoichiometry was used to construct models for C use efficiency (CUE) and decomposition (M), and these were used to model respiration (Rm). Our goals were to determine the relative C, N, and P limitations on microbial processes and organic matter decomposition, and to identify environmental constraints on ecoenzymatic processes. Mean annual water, C, and P yields were greater in the fen, while N yields were similar in both the bog and fen. Soil chemistry differed between the bog and fen, and both watersheds exhibited significant differences among soil horizons. DHA and EEA differed by watersheds and soil horizons, CUE, M, and Rm differed only by soil horizons. C, N, or P limitations indicated by EEA stoichiometry were confirmed with orthogonal regressions of ecoenzyme pairs and enzyme vector analyses, and indicated greater N and P limitation in the bog than in the fen, with an overall tendency toward P-limitation in both the bog and fen. Ecoenzymatic stoichiometry, microbial respiration, and organic matter decomposition were responsive to resource availability and the environmental drivers of microbial metabolism, including those related to global climate changes. © 2014 Springer International Publishing Switzerland (outside the USA).
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被引频次[WOS]:124   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83639
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: Mid-Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, US Environmental Protection Agency, 6201 Congdon Blvd., Duluth, MN, 55804, United States; Center for Research on Ecosystem Change, US Forest Service, Northern Research Station, Grand Rapids, MN, 55744, United States; Integrated Biosciences Graduate Program, University of Minnesota, Duluth, MN, 55812, United States; Sappi Fine Paper North America, Ltd., Cloquet, MN, 55720, United States

Recommended Citation:
Hill B.H.,Elonen C.M.,Jicha T.M.,et al. Ecoenzymatic stoichiometry and microbial processing of organic matter in northern bogs and fens reveals a common P-limitation between peatland types[J]. Biogeochemistry,2014-01-01,120(2018-01-03)
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