Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR020196 |
Temporal variability in the importance of hydrologic, biotic, and climatic descriptors of dissolved oxygen dynamics in a shallow tidal-marsh creek | |
Nelson, Natalie G.1; Munoz-Carpena, Rafael1; Neale, Patrick J.2; Tzortziou, Maria3; Megonigal, J. Patrick2 | |
2017-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH
![]() |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Due to strong abiotic forcing, dissolved oxygen (DO) in shallow tidal creeks often disobeys the conventional explanation of general aquatic DO cycling as biologically regulated. In the present work, we seek to quantify the relative importance of abiotic (hydrologic and climatic), and biotic (primary productivity as represented by chlorophyll-a) descriptors of tidal creek DO. By fitting multiple linear regression models of DO to hourly chlorophyll-a, water quality, hydrology, and weather data collected in a tidal creek of a Chesapeake Bay marsh (Maryland, USA), temporal shifts (summer-early winter) in the relative importance of tidal creek DO descriptors were uncovered. Moreover, this analysis identified an alternative approach to evaluating tidal stage as a driver of DO by dividing stage into two DO-relevant variables: stage above and below bankfull depth. Within the hydrologic variable class, stage below bankfull depth dominated as an important descriptor, thus highlighting the role of pore water drainage and mixing as influential processes forcing tidal creek DO. Study findings suggest that tidal creek DO dynamics are explained by a balance of hydrologic, climatic, and biotic descriptors during warmer seasons due to many of these variables (i.e., chlorophyll-a, water temperature) acting as tracers of estuarine-marsh water mixing; conversely, in early winter months when estuarine and marsh waters differ less distinctly, hydrologic variables increase in relative importance as descriptors of tidal creek DO. These findings underline important distinctions in the underlying mechanisms dictating DO variability in shallow tidal marsh-creek environments relative to open water estuarine systems. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411202000040 |
WOS关键词 | SALT-MARSH ; ECOSYSTEM METABOLISM ; CHESAPEAKE BAY ; TIME-SERIES ; CARBON ; THRESHOLDS ; NUTRIENTS ; SEDIMENTS ; IMPACTS ; HYPOXIA |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/21582 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Florida, Agr & Biol Engn, Gainesville, FL 32611 USA; 2.Smithsonian Environm Res Ctr, POB 28, Edgewater, MD 21037 USA; 3.CUNY, Dept Earth & Atmospher Sci, New York, NY 10021 USA |
推荐引用方式 GB/T 7714 | Nelson, Natalie G.,Munoz-Carpena, Rafael,Neale, Patrick J.,et al. Temporal variability in the importance of hydrologic, biotic, and climatic descriptors of dissolved oxygen dynamics in a shallow tidal-marsh creek[J]. WATER RESOURCES RESEARCH,2017,53(8). |
APA | Nelson, Natalie G.,Munoz-Carpena, Rafael,Neale, Patrick J.,Tzortziou, Maria,&Megonigal, J. Patrick.(2017).Temporal variability in the importance of hydrologic, biotic, and climatic descriptors of dissolved oxygen dynamics in a shallow tidal-marsh creek.WATER RESOURCES RESEARCH,53(8). |
MLA | Nelson, Natalie G.,et al."Temporal variability in the importance of hydrologic, biotic, and climatic descriptors of dissolved oxygen dynamics in a shallow tidal-marsh creek".WATER RESOURCES RESEARCH 53.8(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论