The greenhouse gas flux and potential global warming feedbacks of a northern macrotidal and microtidal salt marsh
Bibliographic Data
| ID | 15549342 |
|---|---|
| Authors | Gail L Chmura (0000-0001-7163-3903, McGill University, corresponding author), Lisa Kellman (St. Francis Xavier University), Glenn R Guntenspergen (0000-0002-8593-0244, United States Geological Survey) |
| Year | 2011 |
| Volume | 6 |
| Issue | 4 |
| Pages | 044016-044016 |
| Publication date | 2011-10-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/6/4/044016 |
| OpenAlex | W2100195673 |
| Language | EN |
| Citations received | 2 |
| References cited | 26 |
Conversion of wetlands by drainage for agriculture or other anthropogenic activities could have a negative or positive feedback to global warming (GWF). We suggest that a major predictor of the GWF is salinity of the wetland soil (a proxy for available sulfate), a factor often ignored in other studies. We assess the radiative balance of two northern salt marshes with average soil salinities > 20 ppt, but with high (macro-) and low (micro-) tidal amplitudes. The flux of greenhouse gases from soils at the end of the growing season averaged 485 ± 253 mg m − 2 h − 1, 13 ± 30 μg m − 2 h − 1, and 19 ± 58 μg m − 2 h − 1 in the microtidal marsh and 398 ± 201 mg m − 2 h − 1, 2 ± 26 μg m − 2 h − 1, and 35 ± 77 μg m − 2 h − 1 in the macrotidal marsh for CO2, N2O, and CH4, respectively. High rates of C sequestration mean that loss of these marshes would have a radiative balance of − 981 CO2_eq. m − 2 yr − 1 in the microtidal and − 567 CO2_eq. m − 2 yr − 1 in the macrotidal marsh
Atmospheric sciences · Brackish marsh · Climate change · Flux (metallurgy · Greenhouse gas · Hydrology (agriculture · Marsh · Radiative forcing · Salt marsh · Wetland · Chemistry · Coastal wetland ecosystem dynamics · Environmental Science · Geology and Paleoclimatology Research · Peatlands and Wetlands Ecology · Ecology · Geology · Oceanography
| Citations per year | 0.2 |
|---|---|
| Citation span | 2016 - 2018 (3) |
| Highly cited | No |