In-situ measurement of greenhouse gas emissions from a coastal estuarine wetland using a novel continuous monitoring technology: Comparison of indigenous and exotic plant species

Towards an integrated view on microbial CH4, N2O and N2 cycles in brackish coastal marsh soils: A comparative analysis of two sites

“…These sites also differed statistically significantly in C concentrations, with higher amounts greatly promoting denitrification ( Damashek and Francis, 2018 ). Spartina (P2, P3) and Phragmites (E1) sites showed higher N 2 O emissions compared to the other plant species sites, consistent with prior studies ( Cheng et al, 2007 ; Zhang et al, 2013 ; Hsieh et al, 2021 ). These studies indicate that plants enhance the activity of nitrifying and denitrifying microorganisms by enriching the soil with necessary substrates (C and N compounds) during higher biomass periods ( Hsieh et al, 2021 ).…”

“…Spartina (P2, P3) and Phragmites (E1) sites showed higher N 2 O emissions compared to the other plant species sites, consistent with prior studies ( Cheng et al, 2007 ; Zhang et al, 2013 ; Hsieh et al, 2021 ). These studies indicate that plants enhance the activity of nitrifying and denitrifying microorganisms by enriching the soil with necessary substrates (C and N compounds) during higher biomass periods ( Hsieh et al, 2021 ). However, the opposite relationship could be seen during the dormant period of plants, with competition between soil microbes and plants for reduced nutrients in the soil ( Cheng et al, 2007 ; Yu et al, 2012 ; Zhang et al, 2013 ), consistent with observations in our study.…”

“…Moreover, high salinity stress affects both microbes and macrophytes. This stress prompts macrophytes to develop richer roots to extract limited nutrients due to increased N demand ( Hsieh et al, 2021 ), subsequently influencing soil microbiological communities.…”

“…The microbial community in coastal areas is sensitive to environmental shifts and plays a role in regulating the success of invasive plant species ( Kowalski et al, 2015 ; Gribben et al, 2017 ; Novoa et al, 2020 ). Conversely, coastal vegetation influences microbial processes, especially in controlling emissions of nitrous oxide (N 2 O) and methane (CH 4 ) ( Al-Haj and Fulweiler, 2020 ; Hsieh et al, 2021 ). These gases can efficiently move through the leaves, stems, and rhizomes of plants with aerenchyma to the atmosphere, a characteristic common in many wetland plants ( Cheng et al, 2007 ).…”

Effect of precipitation change on the photosynthetic performance of Phragmites australis under elevated temperature conditions

“…It is estimated that 13–17.2 Pg of carbon were stored in coastal wetlands ( Hiraishi et al, 2014 ). However, coastal wetlands are also potential source of global greenhouse gases ( Hsieh et al, 2020 ). The climate change increased the release rate of carbon in the CO 2 and CH 4 through organic matter decomposition and decreased the amount of carbon stored in coastal wetlands.…”