Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR028693 |
Prediction of hypoxia in eutrophic polymictic lakes | |
A. Corté; s; A. L. Forrest; S. Sadro; A. J. Stang; M. Swann; N. T. Framsted; R. Thirkill; S. L. Sharp; S. G. Schladow | |
2021-05-16 | |
发表期刊 | Water Resources Research
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出版年 | 2021 |
英文摘要 | Quantifying and predicting the drawdown of dissolved oxygen (DO) in lakes is important to ensuring healthy ecosystems and safe water sources. The characterization of DO depletion using available definitions and models requires extensive monitoring to obtain reliable results. These approaches have been mostly developed for seasonally stratified monomictic and dimictic lakes, limiting their applicability for polymictic systems which stratify and mix repeatedly. We compared the predicted duration of hypoxic events in the three basins of a large eutrophic polymictic lake (Clear Lake, CA, USA) by using three different one‐dimensional (1‐D) analytical approaches; two being original and requiring minimal input variables. Data on meteorology, lake temperature, and DO were all measured at multiple locations for one year and used to develop a novel method, named the Birge‐Winkler method. The daily net surface heat fluxes provided an energy term from which estimates of the onset and length of hypoxic periods could be made with minimal calibration. We used the Lake Number method to evaluate the level of accuracy of the Birge‐Winkler method. Finally, we estimated DO values next to the sediments using a Buoyancy Frequency method. Our results from the two original methods provided simple and effective tools for early warning of onset and duration of hypoxia, with a maximum of ±3‐5 days uncertainty in the predictions. These indices can become powerful decision support tools for addressing aquatic ecological challenges triggered by hypoxia, including fish kills, internal nutrient loading, heavy metals release and harmful algal blooms. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
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/326736 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | A. Corté,s,A. L. Forrest,et al. Prediction of hypoxia in eutrophic polymictic lakes[J]. Water Resources Research,2021. |
APA | A. Corté.,s.,A. L. Forrest.,S. Sadro.,A. J. Stang.,...&S. G. Schladow.(2021).Prediction of hypoxia in eutrophic polymictic lakes.Water Resources Research. |
MLA | A. Corté,et al."Prediction of hypoxia in eutrophic polymictic lakes".Water Resources Research (2021). |
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