Co-Regulations of Spartina alterniflora Invasion and Exogenous Nitrogen Loading on Soil N2O Efflux in Subtropical Mangrove Mesocosms

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dc.contributor.authorDai Jia
dc.contributor.authorFei Qi
dc.contributor.authorXia Xu
dc.contributor.authorJianxiang Feng
dc.contributor.authorHao Wu
dc.contributor.authorJiemin Guo
dc.contributor.authorWeizhi Lu
dc.contributor.authorRonghao Peng
dc.contributor.authorXiaoshan Zhu
dc.contributor.authorYiqi Luo
dc.contributor.authorGuanghui Lin
dc.date.accessioned2017-03-04T01:59:50Z
dc.date.available2017-03-04T01:59:50Z
dc.date.issued2016-01-04
dc.descriptionWe thank Zhonglei Wang, Cunxin Ning, Hui Chen, Qian Huang, Fang Liu and Jian Zhou for their assistance with the greenhouse experiments and gas sampling. We are also grateful to Weimin Song, Rashid Rafique, Junyi Liang, Zheng Shi and Jianyang Xia for editing the manuscript.en_US
dc.descriptionen_US
dc.description.abstractBoth plant invasion and nitrogen (N) enrichment should have significant impact on mangrove ecosystems in coastal regions around the world. However, how N2O efflux in mangrove wetlands responds to these environmental changes has not been well studied. Here, we conducted a mesocosm experiment with native mangrove species Kandelia obovata, invasive salt marsh species Spartina alterniflora, and their mixture in a simulated tide rotation system with or without nitrogen addition. In the treatments without N addition, the N2O effluxes were relatively low and there were no significant variations among the three vegetation types. A pulse loading of exogenous ammonium nitrogen increased N2O effluxes from soils but the stimulatory effect gradually diminished over time, suggesting that frequent measurements are necessary to accurately understand the behavior of N-induced response of N2O emissions. With the N addition, the N2O effluxes from the invasive S. alterniflora were lower than that from native K. obovata mesocosms. This result may be attributed to higher growth of S. alterniflora consuming most of the available nitrogen in soils, and thus inhibiting N2O production. We concluded that N loading significantly increased N2O effluxes, while the invasion of S. alterniflora reduced N2O effluxes response to N loading in this simulated mangrove ecosystem. Thus, both plant invasion and excessive N loading can co-regulate soil N2O emissions from mangrove wetlands, which should be considered when projecting future N2O effluxes from this type of coastal wetland.en_US
dc.description.peerreviewYesen_US
dc.description.peerreviewnoteshttp://www.plosone.org/static/editorial#peeren_US
dc.identifier.citationJia D, Qi F, Xu X, Feng J, Wu H, Guo J, et al. (2016) Co-Regulations of Spartina alterniflora Invasion and Exogenous Nitrogen Loading on Soil N2O Efflux in Subtropical Mangrove Mesocosms. PLoS ONE 11(1): e0146199. doi:10.1371/journal.pone.0146199en_US
dc.identifier.doi10.1371/journal.pone.0146199en_US
dc.identifier.urihttp://hdl.handle.net/11244/49230
dc.language.isoen_USen_US
dc.publisherPLos One
dc.relation.ispartofseriesPLoS ONE 11(1): e0146199
dc.relation.urihttp://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0146199
dc.rightsAttribution 3.0 United States
dc.rights.requestablefalseen_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/
dc.subjectMesocosms,Mangrove swamps,Wetlands,Tides,Invasive species,Nitrification,Sea water,Sedimenten_US
dc.titleCo-Regulations of Spartina alterniflora Invasion and Exogenous Nitrogen Loading on Soil N2O Efflux in Subtropical Mangrove Mesocosmsen_US
dc.typeResearch Articleen_US

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