Nitrification and nitrifying microbial communities in forest soils |
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| Authors: | Kazuo Isobe Keisuke Koba Shigeto Otsuka Keishi Senoo |
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| Institution: | (1) Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan;(2) Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan |
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| Abstract: | How nitrogen (N) cycling is regulated and how environmental change affects it are major study questions in forest ecology,
because N availability often limits the primary production of plants in many forest ecosystems. These are being extensively
highlighted because of growing concerns regarding chronic and elevated N deposition in forest ecosystems on a global scale.
Until now, N cycling has been mainly documented in association with various environmental factors other than microbial communities.
However, with the recent rapid development in culture-independent molecular-based techniques, microbial ecologists have discovered
that alterations in N cycling are highly associated with alternations in microbial communities through changes in either resource
supplies or processing rates. In this review, we describe nitrification as a key N cycling process and present general approaches
to associate the nitrification process with the nitrifying community in forest soils. Furthermore, we briefly summarize currently
available information about the relationship between the process and nitrifying community dynamics in soil. We suppose that
linking N cycling processes with microbial community dynamics provides a deeper insight into the mechanisms regulating N cycling
in forest ecosystems. |
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