Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14430 |
High-frequency greenhouse gas flux measurement system detects winter storm surge effects on salt marsh | |
Diefenderfer, Heida L.; Cullinan, Valerie I.; Borde, Amy B.; Gunn, Cailene M.; Thom, Ronald M. | |
2018-12-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:12页码:5961-5971 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | 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 < 0.001), while CH4 was significantly greater during the night (0.16 mu mol m(-2) hr(-1)) than the day (-0.13 mu mol m(-2) hr(-1); p = 0.04). The magnitude of CO2 flux during the day and the frequency of CH4 flux were reduced during a surge (p < 0.001). Surge did not significantly affect N2O flux, which without non-detects was normally distributed around -24.2 nmol m(-2) hr(-1). Analysis with sustained-flux global potentials and increased storm surge frequency scenarios, 2020 to 2100, suggested that the marsh in winter remains an atmospheric CO2 source. The modeled results showed an increased flux of CO2 to the atmosphere, while in soil, the uptake of CH4 increased and N2O uptake decreased. We present analytical routines to correctly capture gas flux curves in dynamic overland flooding conditions and to flag data that are below detection limits or from unobserved chamber-malfunction situations. Storm surge is an important phenomenon globally, but event-driven, episodic factors can be poorly estimated by infrequent sampling. Wider deployment of this system would permit inclusion of surge events in greenhouse gas estimates. |
英文关键词 | CO2 greenhouse gas salt marsh Sarcocornia perennis soil-flux chamber storm surge sustained-flux global warming potential terrestrial-aquatic |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000449650600029 |
WOS关键词 | METHANE EMISSIONS ; CHAMBER TECHNIQUES ; CARBON-DIOXIDE ; TIDAL MARSHES ; EXCHANGE ; BALANCE ; WETLAND ; LAND ; BIOGEOGRAPHY ; ECOSYSTEMS |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17585 |
专题 | 气候变化 资源环境科学 |
作者单位 | Pacific Northwest Natl Lab, Coastal Sci Div, Marine Sci Lab, Sequim, WA 99354 USA |
推荐引用方式 GB/T 7714 | Diefenderfer, Heida L.,Cullinan, Valerie I.,Borde, Amy B.,et al. High-frequency greenhouse gas flux measurement system detects winter storm surge effects on salt marsh[J]. GLOBAL CHANGE BIOLOGY,2018,24(12):5961-5971. |
APA | Diefenderfer, Heida L.,Cullinan, Valerie I.,Borde, Amy B.,Gunn, Cailene M.,&Thom, Ronald M..(2018).High-frequency greenhouse gas flux measurement system detects winter storm surge effects on salt marsh.GLOBAL CHANGE BIOLOGY,24(12),5961-5971. |
MLA | Diefenderfer, Heida L.,et al."High-frequency greenhouse gas flux measurement system detects winter storm surge effects on salt marsh".GLOBAL CHANGE BIOLOGY 24.12(2018):5961-5971. |
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