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Publication Type J
Authors Lee, SH; Megonigal, PJ; Kang, H
Author Full Name Lee, Seung-Hoon; Megonigal, Patrick J.; Kang, Hojeong
Title How do Elevated CO2 and Nitrogen Addition Affect Functional Microbial Community Involved in Greenhouse Gas Flux in Salt Marsh System
Source MICROBIAL ECOLOGY
Language English
Document Type Article
Author Keywords Salt marsh; Elevated CO2; Naddition; Functional microbial community; C3/C4 plant
Keywords Plus DENITRIFIER COMMUNITIES; ATMOSPHERIC CO2; CARBON ACCUMULATION; SOIL; BACTERIA; VEGETATION; ABUNDANCE; RESPONSES; ECOSYSTEMS; SEDIMENTS
Abstract Salt marshes are unique ecosystem of which a microbial community is expected to be affected by global climate change. In this study, by using T-RFLP analysis, quantitative PCR, and pyrosequencing, we comprehensively analyzed the microbial community structure responding to elevated CO2 (eCO(2)) and N addition in a salt marsh ecosystem subjected to CO2 manipulation and N addition for about 3 years. We focused on the genes of microbes relevant to N-cycling (denitrification and nitrification), CH4-flux (methanogens and methanotrophs), and S-cycling (sulfate reduction) considering that they are key functional groups involved in the nutrient cycle of salt marsh system. Overall, this study suggests that (1) eCO(2) and N addition affect functional microbial community involved in greenhouse gas flux in salt marsh system. Specifically, the denitrification process may be facilitated, while the methanogenesis may be impeded due to the outcompeting of sulfate reduction by eCO(2) and N. This implies that future global change may cause a probable change in GHGs flux and positive feedback to global climate change in salt marsh; (2) the effect of eCO(2) and N on functional group seems specific and to contrast with each other, but the effect of single factor would not be compromised but complemented by combination of two factors. (3) The response of functional groups to eCO(2) and/or N may be directly or indirectly related to the plant community and its response to eCO(2) and/or N. This study provides new insights into our understanding of functional microbial community responses to eCO(2) and/or N addition in a C3/C4 plant mixed salt marsh system.
Author Address [Lee, Seung-Hoon; Kang, Hojeong] Yonsei Univ, Sch Civil & Environm Engn, Seoul 120749, South Korea; [Megonigal, Patrick J.] Smithsonian Environm Res Ctr, Washington, DC 20013 USA
Reprint Address Kang, H (reprint author), Yonsei Univ, Sch Civil & Environm Engn, Seoul 120749, South Korea.
E-mail Address hj_kang@yonsei.ac.kr
Funding Agency and Grant Number NRF [2011-0030040]; SGER [2016R1D1A1A02937049]
Funding Text This study was supported by NRF (2011-0030040) and SGER (2016R1D1A1A02937049).
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Publisher SPRINGER
Publisher City NEW YORK
Publisher Address 233 SPRING ST, NEW YORK, NY 10013 USA
ISSN 0095-3628
29-Character Source Abbreviation MICROB ECOL
ISO Source Abbreviation Microb. Ecol.
Publication Date OCT
Year Published 2017
Volume 74
Issue 3
Beginning Page 670
Ending Page 680
Digital Object Identifier (DOI) 10.1007/s00248-017-0960-8
Subject Category 11
Document Delivery Number Ecology; Marine & Freshwater Biology; Microbiology
Unique Article Identifier Environmental Sciences & Ecology; Marine & Freshwater Biology; Microbiology
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