Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study
To evaluate the effect of benthic algae on soluble reactive phosphorus (SRP) release from sediments in shallow lakes, experiments on SRP release with and without benthic algae in sediment cores and an experiment on SRP uptake by benthic algae were conducted using the radioisotope (32P) tracing metho...
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doaj-f7bc751cc2dd4045949b53dc41a3c9ac2020-11-24T22:35:17ZengElsevierWater Science and Engineering1674-23702015-04-018212713110.1016/j.wse.2015.04.008Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing studyXiu-feng Zhang0Xue-ying Mei1Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, PR ChinaDepartment of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, PR ChinaTo evaluate the effect of benthic algae on soluble reactive phosphorus (SRP) release from sediments in shallow lakes, experiments on SRP release with and without benthic algae in sediment cores and an experiment on SRP uptake by benthic algae were conducted using the radioisotope (32P) tracing method. The dissolved oxygen (DO) concentration in sediment cores was also investigated. The results show that benthic algae effectively reduce the release of SRP from sediments to overlying water. The uptake of SRP by benthic algae, which is the direct way in which benthic algae affect the SRP release from sediments, is low in filtered water and increases with the SRP concentration. However, in the experiment, the increased uptake rate lasted for a short time (in one hour), and after that it returned to a low rate. Benthic algae make the DO concentration and the oxic layer thickness increased, which can indirectly reduce the SRP release from sediments. These findings indicate that benthic algae can reduce the SRP release from sediments in both direct and indirect ways. It seems that the indirect way also plays an important role in reducing the SRP release from sediments.http://www.sciencedirect.com/science/article/pii/S1674237015000356SedimentBenthic algaeSoluble reactive phosphorus releaseSoluble reactive phosphorus uptakeShallow lake |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiu-feng Zhang Xue-ying Mei |
spellingShingle |
Xiu-feng Zhang Xue-ying Mei Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study Water Science and Engineering Sediment Benthic algae Soluble reactive phosphorus release Soluble reactive phosphorus uptake Shallow lake |
author_facet |
Xiu-feng Zhang Xue-ying Mei |
author_sort |
Xiu-feng Zhang |
title |
Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study |
title_short |
Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study |
title_full |
Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study |
title_fullStr |
Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study |
title_full_unstemmed |
Effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study |
title_sort |
effects of benthic algae on release of soluble reactive phosphorus from sediments: a radioisotope tracing study |
publisher |
Elsevier |
series |
Water Science and Engineering |
issn |
1674-2370 |
publishDate |
2015-04-01 |
description |
To evaluate the effect of benthic algae on soluble reactive phosphorus (SRP) release from sediments in shallow lakes, experiments on SRP release with and without benthic algae in sediment cores and an experiment on SRP uptake by benthic algae were conducted using the radioisotope (32P) tracing method. The dissolved oxygen (DO) concentration in sediment cores was also investigated. The results show that benthic algae effectively reduce the release of SRP from sediments to overlying water. The uptake of SRP by benthic algae, which is the direct way in which benthic algae affect the SRP release from sediments, is low in filtered water and increases with the SRP concentration. However, in the experiment, the increased uptake rate lasted for a short time (in one hour), and after that it returned to a low rate. Benthic algae make the DO concentration and the oxic layer thickness increased, which can indirectly reduce the SRP release from sediments. These findings indicate that benthic algae can reduce the SRP release from sediments in both direct and indirect ways. It seems that the indirect way also plays an important role in reducing the SRP release from sediments. |
topic |
Sediment Benthic algae Soluble reactive phosphorus release Soluble reactive phosphorus uptake Shallow lake |
url |
http://www.sciencedirect.com/science/article/pii/S1674237015000356 |
work_keys_str_mv |
AT xiufengzhang effectsofbenthicalgaeonreleaseofsolublereactivephosphorusfromsedimentsaradioisotopetracingstudy AT xueyingmei effectsofbenthicalgaeonreleaseofsolublereactivephosphorusfromsedimentsaradioisotopetracingstudy |
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1725724126102945792 |