2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/20/2019 | 3:15 PM - 3:30 PM | META-ANALYSIS ON INTERNAL PHOSPHORUS LOADING IN LAKES AND RESERVOIRS: RESULTS AND RECOMMENDATIONS | 253 AB
META-ANALYSIS ON INTERNAL PHOSPHORUS LOADING IN LAKES AND RESERVOIRS: RESULTS AND RECOMMENDATIONS
Greater attention is being devoted to internal phosphorus (P) loading in waterbodies around the world, with the recognition that this release of P from sediments can delay aquatic ecosystem recovery. Various factors have been identified as important drivers of internal P loading, but P loading studies tend to be restricted in lake size or geographic location. We examined over 1350 peer-reviewed studies on internal P loading in freshwater lakes and reservoirs around the world, and retained 27 studies from 29 lakes for meta-analysis. Principal component analyses revealed that four principal components explained approximately 75% of the variance in P release rates. Multiple linear regression models identified three important factors consistent in both total P and filtered P release rates: dissolved oxygen, incubation temperature, and latitude. Despite the considerable variability found in our analyses, it appears that dissolved oxygen and temperature are master factors influencing internal P loading. We recommend future internal P loading studies employ more consistent methods and reporting standards than currently found in published literature to facilitate comparisons. These data and recommendations are published in the forthcoming book Internal Phosphorus Loading: Causes, Case Studies, and Management.
- Eutrophication
- Sediment
- Lentic
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Presenters/Authors
Emily Kindervater
(), Annis Water Resources Institute- Grand Valley State University, kinderve@mail.gvsu.edu;
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Alan Steinman
(), Annis Water Resources Institute-Grand Valley State University, steinmaa@gvsu.edu;
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