DOI: 10.1016/j.watres.2018.01.025
Scopus记录号: 2-s2.0-85038030143
论文题名: Modelling ROS formation in boreal lakes from interactions between dissolved organic matter and absorbed solar photon flux
作者: Wolf R. ; Thrane J.-E. ; Hessen D.O. ; Andersen T.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 132 起始页码: 331
结束页码: 339
语种: 英语
英文关键词: Dissolved organic matter
; Environmental modelling
; Lake ecology
; ROS formation
; Ultraviolet radiation
Scopus关键词: Biogeochemistry
; Dissolution
; Ecology
; Lakes
; Organic compounds
; Ultraviolet radiation
; Dissolved organic matters
; Environmental modelling
; Northern Hemispheres
; Peroxide formations
; Photosynthetically active radiation
; Physicochemical property
; Reactive oxygen species
; ROS formation
; Biological materials
; dissolved organic matter
; hydrogen peroxide
; lake water
; reactive oxygen metabolite
; surface water
; dissolved organic matter
; environmental modeling
; freshwater ecosystem
; hydrogen peroxide
; lake water
; modeling
; Northern Hemisphere
; oxidative stress
; physicochemical property
; phytoplankton
; reactive oxygen species
; solar radiation
; ultraviolet radiation
; water column
; zooplankton
; Article
; concentration (parameters)
; in vitro study
; lake
; lake ecosystem
; molecular model
; nonhuman
; oxidative stress
; photon
; phytoplankton
; priority journal
; quantum yield
; radiation absorption
; solar radiation
; volumetry
; zooplankton
英文摘要: Concentrations of dissolved organic matter (DOM) are increasing in a large number of lakes across the Northern hemisphere. This browning serves a dual role for biota by protecting against harmful ultraviolet radiation, while also absorbing photosynthetically active radiation. The photochemical activation of DOM and subsequent formation of reactive oxygen species (ROS) is a potentially harmful side effect, but can be difficult to measure directly in situ. In this study, we combine a data set of physico-chemical properties from 71 Nordic lakes with in vitro ROS formation quantum yields to predict ROS formations across a representative boreal ecosystem gradient. For the upper centimeter of the water column, we calculate ROS formations in the range of 7.93–12.56 μmol L−1 h−1. In the first meter, they range between 1.69 and 6.69 μmol L−1 h−1 and in the remaining depth the range is 0.01–0.46 μmol L−1 h−1. These ROS formations are comparable with previously field-measured hydrogen peroxide formation rates and likely affect both phyto- and zooplankton, as well as lake chemistry. Interestingly, wavelengths of the visible spectrum (>400 nm) contribute more than half of the overall ROS formation in surface-near water layers. The association between DOM and ROS formation was found to be two-fold. While DOM promotes ROS formation in the first centimeters of the water column, the shading effect of light attenuation overpowers this with increasing depth. In the context of water browning, our results indicate the emergence of an underestimated oxidative stress environment for lake biota in the upper centimeters of the water column. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112994
Appears in Collections: 气候减缓与适应
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作者单位: Department of Biosciences, University of Oslo, P.O. box 1066 Blindern, Oslo, 0316, Norway; Section for Freshwater Ecology, Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, Oslo, 0349, Norway
Recommended Citation:
Wolf R.,Thrane J.-E.,Hessen D.O.,et al. Modelling ROS formation in boreal lakes from interactions between dissolved organic matter and absorbed solar photon flux[J]. Water Research,2018-01-01,132