Riverine Discharge and Phytoplankton Biomass Control Dissolved and Particulate Organic Matter Dynamics over Spatial and Temporal Scales in the Neuse River Estuary, North Carolina
Riverine Discharge and Phytoplankton Biomass Control Dissolved and Particulate Organic Matter Dynamics over Spatial and Temporal Scales in the Neuse River Estuary, North Carolina
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北卡罗来纳州纽斯河口的河流排放和浮游植物生物量控制时空尺度溶解和颗粒有机物动态
DOI：
10.1007/s12237-021-00955-w
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发表时间：
2021
影响因子：
2.7
通讯作者：
Paerl, Hans W.
中科院分区：
文献类型：
--
作者：
Hounshell, Alexandria G.;Fegley, Stephen R.;Hall, Nathan S.;Osburn, Christopher L.;Paerl, Hans W.
Estuaries function as important transporters, transformers, and producers of organic matter (OM). Along the freshwater to saltwater gradient, the composition of OM is influenced by physical and biogeochemical processes that change spatially and temporally, making it difficult to constrain OM in these ecosystems. In addition, many of the environmental parameters (temperature, precipitation, riverine discharge) controlling OM are expected to change due to climate change. To better understand the environmental drivers of OM quantity (concentration) and quality (absorbance, fluorescence), we assessed both dissolved OM (DOM) and particulate OM (POM) spatially, along the freshwater to saltwater gradient and temporally, for a full year. We found seasonal differences in salinity throughout the estuary due to elevated riverine discharge during the late fall to early spring, with corresponding changes to OM quantity and quality. Using redundancy analysis, we found DOM covaried with salinity (adjustedr2= 0.35, 0.41 for surface and bottom), indicating terrestrial sources of DOM in riverine discharge were the dominant DOM sources throughout the estuary, while POM covaried with environmental indictors of terrestrial sources (turbidity, adjustedr2= 0.16, 0.23 for surface and bottom) as well as phytoplankton biomass (chlorophyll-a, adjustedr2= 0.25, 0.14 for surface and bottom). Responses in OM quantity and quality observed during the period of elevated discharge were similar to studies assessing OM quality following extreme storm events suggesting that regional changes in precipitation, as predicted by climate change, will be as important in changing the estuarine OM pool as episodic storm events in the future.
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极端天气事件调节北卡罗来纳州纽斯河口溶解有机碳的加工和出口
DOI：
10.1016/j.ecss.2019.01.020
发表时间：
2019
期刊：
Estuarine, Coastal and Shelf Science
影响因子：
--
作者：
A. Hounshell;J. Rudolph;B. V. Van Dam;N. Hall;C. Osburn;H. Paerl
通讯作者：
H. Paerl
影响因子：
3.7
作者：
Kaijun Lu;Zhanfei Liu
通讯作者：
Kaijun Lu;Zhanfei Liu
影响因子：
2.7
作者：
Peierls, Benjamin L.;Hall, Nathan S.;Paerl, Hans W.
通讯作者：
Paerl, Hans W.
影响因子：
3.7
作者：
Letourneau, Maria L.;Medeiros, Patricia M.
通讯作者：
Medeiros, Patricia M.
影响因子：
3.7
作者：
Asmala, Eero;Kaartokallio, Hermanni;Thomas, David N.
通讯作者：
Thomas, David N.