CO2 Uptake Offsets Other Greenhouse Gas Emissions from Salt Marshes with Chronic Nitrogen Loading

Moseman‐Valtierra, Serena; Szura, Katelyn; Eagle, Meagan; Thornber, Carol S.; Wang, Faming

doi:10.1007/s13157-022-01601-2

Cited by 5 publications

(8 citation statements)

References 59 publications

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“…CO 2 fluxes ranged from −61.28 to 10.46 mmol m −2 hr −1 . Overall, CO 2 uptake rates in this study were comparable to other saltmarsh measurements (Abdul‐Aziz et al., 2018; Chmura et al., 2011; Emery & Fulweiler, 2014; Martin et al., 2018; Martin & Moseman‐valtierra, 2015; Moseman‐Valtierra et al., 2022). Although not significant, CO 2 uptake was 9% lower in the TLP plots compared to the control plots.…”

Section: Discussionsupporting

confidence: 90%

“…Because we only measured during the day from June‐October this analysis only reflects daytime, growing season dynamics and isn't representative of annual GHG dynamics. However, other studies including (Chmura et al., 2011; Moseman‐Valtierra et al., 2022) conducted similar net radiative forcing analyses from daytime seasonal data, Chmura et al. (2011) measured GHG fluxes in August and September and Moseman‐Valtierra et al.…”

Section: Discussionmentioning

confidence: 81%

“…N 2 O fluxes in salt marshes are largely driven by water residence time and availability of dissolved inorganic N (Emery & Fulweiler, 2014; Moseman‐Valtierra et al., 2011, 2022; Rosentreter et al., 2021). In this study, we found N 2 O fluxes were comparable to literature values (Moseman‐Valtierra et al., 2011, 2022; Murray et al., 2015). N 2 O was nearly 3× higher in the TLP‐14 cm plots than the control plots.…”

Section: Discussionmentioning

confidence: 99%

“…Because we only measured during the day from June-October this analysis only reflects daytime, growing season dynamics and isn't representative of annual GHG dynamics. However, other studies including (Chmura et al, 2011;Moseman-Valtierra et al, 2022) conducted similar net radiative forcing analyses from daytime seasonal data, Chmura et al (2011) measured GHG fluxes in August and September and Moseman-Valtierra et al ( 2022) measured GHG fluxes July-November. While not representative of annual dynamics, this analysis provides insights into the net radiative forcing of the marsh during the marsh's peak productivity months (Morris et al, 2013) and thus is still meaningful.…”

Section: Treatment Level Differences In Ghgsmentioning

confidence: 92%

“…Finally, at the end of the study we also collected biomass from a quarter of each plot, by clipping the live biomass. Once back in the lab we rinsed the biomass with deionized water, dried it at 65°C, and weighed it to estimate aboveground biomass from the experimental plots (Darby & Turner, 2008; Moseman‐Valtierra et al., 2022).…”

Section: Methodsmentioning

confidence: 99%

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Sediment Addition Leads to Variable Responses in Temperate Salt Marsh Greenhouse Gas Fluxes During the Growing Season

Bartolucci,

Fulweiler

2024

JGR Biogeosciences

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Salt marshes play an important role in coastal carbon cycling. Unfortunately, these systems are threatened by sea level rise. One strategy to increase the resilience of marshes is thin‐layer placement of sediment (TLP). While TLP can boost elevation, little is known about how TLP alters greenhouse gas fluxes. We addressed this knowledge gap by measuring greenhouse gas fluxes in TLP plots that received either 7 cm (TLP‐7 cm) or 14 cm of added sediment (TLP‐14 cm), control plots that received no sediment, and reference plots that served as elevation end goal targets for the TLP plots. We found that mean (± standard error) CO2 uptake was comparable between control and TLP plots (control: −25.84 ± 2.46; TLP‐7 cm: −24.44 ± 3.32; TLP‐14 cm: −23.18 ± 2.08 mmol m−2 hr−1) and significantly less in reference plots (−9.54 ± 2.98 mmol m−2 hr−1). However, TLP plots (TLP‐7 cm: 35.74 ± 12.70, TLP‐14 cm: 19.79 ± 3.47 μmol m−2 hr−1) emitted up to 7 to 22 times more CH4 compared to control (5.77 ± 0.74 μmol m−2 hr−1) and reference (1.63 ± 0.75 μmol m−2 hr−1) plots, respectively. N2O fluxes from the TLP plots exhibited both uptake (TLP‐7 cm) and emission (TLP‐ 14 cm). Overall, the marsh remained a net greenhouse gas sink, at least during the times we measured—during the day and throughout the growing season. This research demonstrates the dynamics of greenhouse gas fluxes in marshes amended with sediment and highlights the need for future diel and annual measurements.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Treatment Level Differences In Ghgsmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Sediment Addition Leads to Variable Responses in Temperate Salt Marsh Greenhouse Gas Fluxes During the Growing Season

Bartolucci,

Fulweiler

2024

JGR Biogeosciences

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Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz

Sierra,

Correia,

Ortega

et al. 2024

Science of The Total Environment

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The Microbial Ecology of Estuarine Ecosystems

Crump

Bowen

2024

Annu. Rev. Mar. Sci.

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Human civilization relies on estuaries, and many estuarine ecosystem services are provided by microbial communities. These services include high rates of primary production that nourish harvests of commercially valuable species through fisheries and aquaculture, the transformation of terrestrial and anthropogenic materials to help ensure the water quality necessary to support recreation and tourism, and mutualisms that maintain blue carbon accumulation and storage. Research on the ecology that underlies microbial ecosystem services in estuaries has expanded greatly across a range of estuarine environments, including water, sediment, biofilms, biological reefs, and stands of seagrasses, marshes, and mangroves. Moreover, the application of new molecular tools has improved our understanding of the diversity and genomic functions of estuarine microbes. This review synthesizes recent research on microbial habitats in estuaries and the contributions of microbes to estuarine food webs, elemental cycling, and interactions with plants and animals, and highlights novel insights provided by recent advances in genomics. Expected final online publication date for the Annual Review of Marine Science, Volume 16 is January 2024. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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CO2 Uptake Offsets Other Greenhouse Gas Emissions from Salt Marshes with Chronic Nitrogen Loading

Cited by 5 publications

References 59 publications

Sediment Addition Leads to Variable Responses in Temperate Salt Marsh Greenhouse Gas Fluxes During the Growing Season

Sediment Addition Leads to Variable Responses in Temperate Salt Marsh Greenhouse Gas Fluxes During the Growing Season

Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz

The Microbial Ecology of Estuarine Ecosystems

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