Integrating monthly spring tidal waves into estuarine carbon budget of meta-ecosystems

文献类型： 外文期刊

第一作者： Gao, Yu

作者： Gao, Yu;Zhang, Tingting;Zhao, Feng;Liu, Jianyi;Wang, Sikai;Zhuang, Ping;Gao, Yu;Zhang, Tingting;Zhao, Feng;Liu, Jianyi;Wang, Sikai;Zhuang, Ping;Gao, Yu;Zhang, Tingting;Zhao, Feng;Liu, Jianyi;Wang, Sikai;Zhuang, Ping;Gao, Yu;Zhao, Bin;Zhang, Tingting;Guo, Haiqiang;Hao, Yingying;Wang, Sikai;Gao, Yu;Zhao, Bin;Zhang, Tingting;Guo, Haiqiang;Hao, Yingying;Wang, Sikai;Gao, Yu;Gao, Yu;Chen, Jiquan;Ouyang, Zutao

作者机构：

关键词： Coastal marsh; Lateral carbon flux; Monthly tide; Dissolved organic carbon (DOC); Dissolved inorganic carbon (DIC); Particulate organic carbon (POC)

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）

ISSN： 0048-9697

年卷期： 2023 年 905 卷

页码：

收录情况： SCI

摘要： The contribution of lateral carbon (C) to hydrological processes is well known for its ecological functions in the estuarine C budget across the terrestrial-aquatic interfaces. However, sampling of individual daily tides during multiple months or seasons in heterogeneous patches of landscape makes extrapolation from days to months or seasons challenging. In this paper, we examine the terrestrial-aquatic lateral hydrological C flux for an estuarine marsh where monthly tides, including consecutive daily spring tides, were measured over the course of an entire year. We found a significant correlation between imported and exported hydrological dissolved C, both dissolved organic carbon (DOC) and dissolved inorganic carbon (DIC), although a similar correlation was not found for particulate organic carbon (POC). Based on a total of 44 sampling trips over a year, this saltmarsh appeared to be a net exporter of DOC and DIC but a net sink of POC. Furthermore, the lateral hydrological C budget functioned as a limited lateral C sink in terms of organic C (i.e., Delta POC and Delta DOC), while the marsh functioned as a small lateral C source. Our findings highlight the importance of lateral hydrologic inflows/outflows in wetland C budgets of land-water interfaces, especially in those characterized by the meta-ecosystem framework. Surprisingly, different C species responded unequally to the lateral hydrological C budget, suggesting that a conceptual realization of meta-ecosystem is a powerful theoretical framework to extend the outwelling hypothesis.

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