Spartina alterniflora invasion affects methane emissions in the Yangtze River estuary
Abstract
Purpose
Wetlands are the largest natural sources of atmospheric methane (CH4) and are often susceptible to plant invasion and hydrological fluctuations. However, the effect of plant invasion on wetland CH4 emissions is still controversial, and little is known about the variation of invasion-induced CH4 emissions under heterogeneous conditions.
Materials and methods
A pairwise experimental design between Spartina alterniflora (invasive plant) and Phragmites australis (native plant) stands in high elevation sites (H-sites) and S. alterniflora and Scirpus mariqueter (native plant) stands in low elevation sites (L-sites) of the Yangtze River estuary was used to investigate how plant invasions affect CH4 emissions and whether CH4 emission changes significantly differ between the H- and L-sites with heterogeneous conditions. A static closed chamber method was used to conduct gas sampling measurements at both H- and L-sites. In addition, plant biomass and soil properties were investigated in both invasive and native plant stands.
Results and discussion
CH4 emissions from the S. alterniflora stands were all significantly higher than those from the native plant stands at both H- and L-sites. Furthermore, the difference in CH4 emissions between S. alterniflora and P. australis stands in the H-sites was significantly lower than that between S. alterniflora and S. mariqueter stands in the L-sites. Plant biomass, soil organic carbon, and microbial biomass in S. alterniflora stands were all significantly higher than those in the native plant stands in both H-sites and L-sites. The soil properties also changed. Our results indicate that the S. alterniflora invasion significantly enhanced CH4 emissions from wetlands in the Yangtze River estuary. The invasion-related CH4 emissions were highly spatially variable; this variability may have been driven by the soil’s anaerobic environments, induced by hydrological dynamics.
Conclusions
These results can have important implications for improving our ability to predict invasion-induced changes in CH4 emissions from wetlands in the context of global climate change.
Keywords
CH4 emissions Coastal wetlands Plant invasion Soil organic carbon Spartina alternifloraNotes
Funding information
This research was funded by the Scientific Research Fund of Liaoning Provincial Education Department (LYB201615), Startup Foundation for Doctors of Liaoning Province (20170520069), The Open Research Fund of State Key Laboratory of Estuarine and Coastal Research (SKLEC-KF201713), The Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (ES201809), The National Key Research and Development Program of China (2017YFD0600505), The National Natural Science Foundation of China (21704037), and National Water Pollution Control and Treatment Science and Technology Major Project (2015ZX07202-012).
References
- Aller RC (1998) Mobile deltaic and continental shelf muds as suboxic, fluidized bed reactors. Mar Chem 61:143–155CrossRefGoogle Scholar
- An SQ, Gu BH, Zhou CF et al (2007) Spartina invasion in China: implications for invasive species management and future research. Weed Res 47:183–191CrossRefGoogle Scholar
- Carmichael MJ, Bernhardt ES, Bräuer SL, Smith WK (2014) The role of vegetation in methane flux to the atmosphere: should vegetation be included as a distinct category in the global methane budget? Biogeochemistry 119:1–24CrossRefGoogle Scholar
- Chen YP, Chen GC, Ye Y (2015) Coastal vegetation invasion increases greenhouse gas emission from wetland soils but also increases soil carbon accumulation. Sci Total Environ 526:19–28CrossRefGoogle Scholar
- Cheng XL, Peng RH, Chen JQ, Luo Y, Zhang Q, An S, Chen J, Li B (2007) CH4 and N2O emissions from Spartina alterniflora and Phragmites australis in experimental mesocosms. Chemosphere 68:420–427CrossRefGoogle Scholar
- Cheng XL, Luo YQ, Xu Q et al (2009) Seasonal variation in CH4 emission and its 13C-isotopic signature from Spartina alterniflora and Scirpus mariqueter soils in an estuarine wetland. Plant Soil 327:85–94CrossRefGoogle Scholar
- Emery HE, Fulweiler RW (2014) Spartina alterniflora and invasive Phragmites australis stands have similar greenhouse gas emissions in a New England marsh. Aquat Bot 116:83–92CrossRefGoogle Scholar
- Jiang LF, Luo YQ, Chen JK, Li B (2009) Ecophysiological characteristics of invasive Spartina alterniflora and native species in salt marshes of Yangtze River estuary, China. Estuar Coast Shelf Sci 81:74–82CrossRefGoogle Scholar
- Kao-Kniffin J, Freyre DS, Balser TC (2010) Methane dynamics across wetland plant species. Aquat Bot 93:107–113CrossRefGoogle Scholar
- Kutzbach L, Wagner D, Pfeiffer EM (2004) Effect of microrelief and vegetation on methane emission from wet polygonal tundra, Lena Delta, Northern Siberia. Biogeochemistry 69:341–362CrossRefGoogle Scholar
- Laanbroek HJ (2010) Methane emission from natural wetlands: interplay between emergent macrophytes and soil microbial processes: a mini-review. Ann Bot 105:141–153CrossRefGoogle Scholar
- Le Mer J, Roger P (2001) Production, oxidation, emission and consumption of methane by soils: a review. Eur J Soil Biol 37:25–50CrossRefGoogle Scholar
- Li XG, Lu XX, Sun YM et al (2003) Relation of active iron and redox environments in the sediments of Bohai Sea. Mar Environ Sci 22:20–24 (in Chinese with English abstract)Google Scholar
- Li B, Liao CZ, Zhang XD et al (2009) Spartina alterniflora invasions in the Yangtze River estuary, China: an overview of current status and ecosystem effects. Ecol Eng 35:511–520CrossRefGoogle Scholar
- Liao CZ, Luo YQ, Jiang LF, Zhou X, Wu X, Fang C, Chen J, Li B (2007) Invasion of Spartina alterniflora enhanced ecosystem carbon and nitrogen stocks in the Yangtze Estuary, China. Ecosystems 10:1351–1361CrossRefGoogle Scholar
- Lovley DR, Phillips EJP (1987) Rapid assay for microbially reducible ferric iron in aquatic sediments. Appl Environ Microbiol 53:1536–1540Google Scholar
- Minoda T, Kimura M, Wada E (1996) Photosynthates as dominant source of CH4 and CO2 in soil water and CH4 emitted to the atmosphere from paddy fields. J Geophys Res Atmos 101:21091–21097CrossRefGoogle Scholar
- Mitsch WJ, Gosselink JG (2007) Wetlands, 4th edn. John Wiley & Sons, Inc., New YorkGoogle Scholar
- Mou XJ, Liu XT, Tong C, Sun Z (2014) Responses of CH4 emissions to nitrogen addition and Spartina alterniflora invasion in Minjiang River estuary, southeast of China. Chin Geogr Sci 24:562–574CrossRefGoogle Scholar
- Neubauer SC, Givler K, Valentine SK, Megonigal JP (2005) Seasonal patterns and plant-mediated controls of subsurface wetland biogeochemistry. Ecology 86:3334–3344CrossRefGoogle Scholar
- Niedermeier A, Robinson JS (2007) Hydrological controls on soil redox dynamics in a peat-based, restored wetland. Geoderma 137:318–326CrossRefGoogle Scholar
- Osunkoya OO, Perrett C (2010) Lantana camara L. (Verbenaceae) invasion effects on soil physicochemical properties. Biol Fertil Soils 47:349–355CrossRefGoogle Scholar
- Rovira P, Vallejo VR (2002) Labile and recalcitrant pools of carbon and nitrogen in organic matter decomposing at different depths in soil: an acid hydrolysis approach. Geoderma 107:109–141CrossRefGoogle Scholar
- Seybold CA, Mersie W, Huang JY, McNamee C (2002) Soil redox, pH, temperature, and water-table patterns of a freshwater tidal wetland. Wetlands 22:149–158CrossRefGoogle Scholar
- Takakai F, Nagata O, Hatano R (2005) Effect of Sasa invasion on CO2, CH4 and N2O fluxes in Sphagnum dominated poor fen in Bibai, Hokkaido, Japan. Phyton-Ann Rei Bot 45:319–326Google Scholar
- Tang L, Gao Y, Wang CH, Wang J, Li B, Chen J, Zhao B (2010) How tidal regime and treatment timing influence the clipping frequency for controlling invasive Spartina alterniflora: implications for reducing management costs. Biol Invasions 12:593–601CrossRefGoogle Scholar
- Tokida T, Adachi M, Cheng WG, Nakajima Y, Fumoto T, Matsushima M, Nakamura H, Okada M, Sameshima R, Hasegawa T (2011) Methane and soil CO2 production from current-season photosynthates in a rice paddy exposed to elevated CO2 concentration and soil temperature. Glob Chang Biol 17:3327–3337CrossRefGoogle Scholar
- Tong C, Wang WQ, Huang JF, Gauci V, Zhang LH, Zeng CS (2012) Invasive alien plants increase CH4 emissions from a subtropical tidal estuarine wetland. Biogeochemistry 111:677–693CrossRefGoogle Scholar
- Vila M, Espinar JL, Hejda M et al (2011) Ecological impacts of invasive alien plants: a meta-analysis of their effects on species, communities and ecosystems. Ecol Lett 14:702–708CrossRefGoogle Scholar
- Wang Q, Wang CH, Zhao B, Ma ZJ, Luo YQ, Chen JK, Li B (2006) Effects of growing conditions on the growth of and interactions between salt marsh plants: implications for invasibility of habitats. Biol Invasions 8:1547–1560CrossRefGoogle Scholar
- Weinstein MP, Kreeger DA (2000) Concepts and controversies in tidal marsh ecology. Kluwer Academic Publishers, NetherlandsCrossRefGoogle Scholar
- Whiting GJ, Chanton JP (1993) Primary production control of methane emission from wetlands. Nature 364:794–795CrossRefGoogle Scholar
- Wu J, Joergensen RG, Pommerening B, Chaussod R, Brookes PC (1990) Measurement of soil microbial biomass C by fumigation-extraction—an automated procedure. Soil Biol Biochem 22:1167–1169CrossRefGoogle Scholar
- Xu HF, Zhao YL (2005) Comprehensive surveys in Chongming Dongtan nature reserve for migratory birds, Shanghai. Chinese Forestry Press, Beijing (in Chinese with English abstract)Google Scholar
- Yuan JJ, Ding WX, Liu DY, Kang H, Freeman C, Xiang J, Lin Y (2015) Exotic Spartina alterniflora invasion alters ecosystem-atmosphere exchange of CH4 and N2O and carbon sequestration in a coastal salt marsh in China. Glob Chang Biol 21:1567–1580CrossRefGoogle Scholar
- Zedler JB, Kercher S (2004) Causes and consequences of invasive plants in wetlands: opportunities, opportunists, and outcomes. Crit Rev Plant Sci 23:431–452CrossRefGoogle Scholar
- Zeleke J, Sheng Q, Wang JG et al (2013) Effects of Spartina alterniflora invasion on the communities of methanogens and sulfate-reducing bacteria in estuarine marsh sediments. Front Microbiol 4:243CrossRefGoogle Scholar
- Zhang YH, Ding WX, Cai ZC, Valerie P, Han F (2010) Response of methane emission to invasion of Spartina alterniflora and exogenous N deposition in the coastal salt marsh. Atmos Environ 44:4588–4594CrossRefGoogle Scholar
- Zhang DH, Hu YM, Liu M, Chang Y, Yan X, Bu R, Zhao D, Li Z (2017) Introduction and spread of an exotic plant, Spartina alterniflora, along coastal marshes of China. Wetlands 37:1181–1193CrossRefGoogle Scholar
- Zhao B, Yan Y, Guo HQ, He M, Gu Y, Li B (2009) Monitoring rapid vegetation succession in estuarine wetland using time series MODIS-based indicators: an application in the Yangtze River Delta area. Ecol Indic 9:346–356CrossRefGoogle Scholar
- Zou YC, Lu XG, Jiang M (2009) Dynamics of dissolved iron under pedohydrological regime caused by pulsed rainfall events in wetland soils. Geoderma 150:46–53CrossRefGoogle Scholar