DOI: 10.1016/j.ecss.2020.106627
论文题名: The ebb and flow of protons: A novel approach for the assessment of estuarine and coastal acidification
作者: Pettay D.T. ; Gonski S.F. ; Cai W.-J. ; Sommerfield C.K. ; Ullman W.J.
刊名: Estuarine, Coastal and Shelf Science
ISSN: 2727714
出版年: 2020
卷: 236 语种: 英语
英文关键词: Coastal acidification
; Continuous monitoring
; Delaware Bay
; Murderkill River
; pH
; Proton concentrations
; Proton flux
Scopus关键词: assessment method
; concentration (composition)
; environmental monitoring
; estuarine environment
; ocean acidification
; pH
; Delaware
; Delaware Bay
; Murderkill Estuary
; United States
英文摘要: The acidification of estuarine and coastal waters is a consequence of both natural (e.g., aerobic respiration) and anthropogenic (e.g., combustion of fossil fuels, eutrophication) processes and can negatively impact the surrounding ecosystems. Until recently it was difficult to accurately measure pH, and thus total proton concentrations ([HT +]), when salinities vary significantly and rapidly as a consequence of tidal mixing. Proton production and transport are ultimately responsible for acidification in nearshore environments, and the uncertainty surrounding proton concentrations measured at high frequency has hindered our understanding of the net impact of global and local processes on estuarine and coastal acidification. Here, we quantify the rate of proton exchange between an estuary and bay to assess the extent of acidification by using the novel combination of high frequency pHT (total hydrogen ion concentration scale) data from an autonomous SeapHOx™ sensor and continuous tidal discharge measurements made between the eutrophic Murderkill Estuary and Delaware Bay. Proton fluxes reverse with each tide. However, the net non-tidal proton fluxes are directed upstream and display seasonal changes in magnitude. Our results indicate that Delaware Bay contributes to the acidification of the Murderkill Estuary, yet the degree of acidification is reduced in the summer. Using proton concentrations measured at high temporal resolution to calculate proton fluxes provides a new and relatively simple approach for quantifying the acidification of dynamic nearshore environments. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158233
Appears in Collections: 气候变化与战略
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作者单位: School of Marine Science and Policy, University of Delaware, Lewes, DE, United States; Department of Natural Sciences, University of South Carolina Beaufort, Beaufort, SC, United States; Washington State Department of Ecology, Olympia, WA, United States; School of Marine Science and Policy, University of Delaware NewarkDE, United States
Recommended Citation:
Pettay D.T.,Gonski S.F.,Cai W.-J.,et al. The ebb and flow of protons: A novel approach for the assessment of estuarine and coastal acidification[J]. Estuarine, Coastal and Shelf Science,2020-01-01,236