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Updated: May 8, 2026
10:49
Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading
Published on: March 6, 2014
[Phosphorus exchange between suspended solids sediments overlying water under repeated disturbance]
Da-Peng Li1, Jing Wang, Yong Huang
1School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215011, China. ustsldp@163.com
Huan Jing Ke Xue= Huanjing Kexue
|August 17, 2013
Summary
Repeated disturbance alters phosphorus exchange between sediments and water. Suspended solids act as a medium, influencing dissolved phosphorus levels and sediment phosphorus forms. This impacts aquatic ecosystems.
Area of Science:
- Environmental Chemistry
- Aquatic Ecology
- Geochemistry
Context:
- Investigates phosphorus (P) dynamics in aquatic systems.
- Focuses on the exchange between suspended solids, sediments, and overlying water.
- Examines the impact of repeated disturbance on these processes.
Purpose:
- To understand how repeated disturbance affects phosphorus exchange.
- To identify the role of suspended solids in phosphorus cycling.
- To analyze changes in different phosphorus forms within sediments and water.
Summary:
- Repeated disturbance led to decreased total phosphorus (TP) and particulate phosphorus (PP) concentrations.
- Dissolved total phosphorus (DTP) and dissolved inorganic phosphorus (DIP) reached equilibrium, with DIP increasing initially due to high NH4Cl-P in sediments.
- Sediment phosphorus fractions (NH4Cl-P, Fe/Al-P, HCl-P) decreased, while these forms increased in sediments, indicating a shift in phosphorus storage.
- Suspended solids were identified as the primary medium for phosphorus exchange between sediments and overlying water.
Impact:
- Provides insights into phosphorus cycling under dynamic environmental conditions.
- Highlights the role of disturbance in regulating nutrient availability in aquatic ecosystems.
- Informs strategies for managing water quality and eutrophication in lakes and bays.
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