High-frequency greenhouse gas flux measurement system detects winter storm surge effects on salt marsh
| Autor: | Heida L. Diefenderfer, C. Gunn, Amy B. Borde, Ronald M. Thom, Valerie I. Cullinan |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences Climate Change Nitrous Oxide Winter storm Climatic Processes Climate change Storm surge Wetland Atmospheric sciences 010603 evolutionary biology 01 natural sciences Atmosphere Greenhouse Gases Soil Environmental Chemistry Surge Ecosystem 0105 earth and related environmental sciences General Environmental Science Global and Planetary Change geography geography.geographical_feature_category Ecology Carbon Dioxide Plants Wetlands Greenhouse gas Salt marsh Environmental science Seasons |
| Zdroj: | Global Change Biology. 24:5961-5971 |
| ISSN: | 1354-1013 |
| Popis: | The physical controlling factors on coastal plant communities are among the most dynamic of known ecosystems, but climate change alters coastal surface and subsurface hydrologic regimes, which makes rapid measurement of greenhouse gas fluxes critical. Greenhouse gas exchange rates in these terrestrial-aquatic ecosystems are highly variable worldwide with climate, soil type, plant community, and weather. Therefore, increasing data collection and availability should be a priority. Here, we demonstrate and validate physical and analytical modifications to automated soil-flux chamber measurement methods for unattended use in tidally driven wetlands, allowing the high-frequency capture of storm surge and day/night dynamics. Winter CO2 flux from Sarcocornia perennis marsh to the atmosphere was significantly greater during the day (2.8 mmol m-2 hr-1 ) than the night (2.2 mmol m-2 hr-1 ; p |
| Databáze: | OpenAIRE |
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