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Influence of algal bloom degradation on nutrient release at the sediment-water interface in Lake Taihu, China.
Environ Sci Pollut Res Int. 2013 Mar; 20(3):1803-11.ES

Abstract

Algal bloom could drastically influence the nutrient cycling in lakes. To understand how the internal nutrient release responds to algal bloom decay, water and sediment columns were sampled at 22 sites from four distinct regions of China's eutrophic Lake Taihu and incubated in the laboratory to examine the influence of massive algal bloom decay on nutrient release from sediment. The column experiment involved three treatments: (1) water and sediment (WS); (2) water and algal bloom (WA); and (3) water, sediment, and algal bloom (WSA). Concentrations of dissolved oxygen (DO), total nitrogen (TN), total phosphorus (TP), ammonium (NH (4) (+) -N), and orthophosphate (PO (4) (3-) -P) were recorded during incubation. The decay of algal material caused a more rapid decrease in DO than in the algae-free controls and led to significant increases in NH (4) (+) -N and PO (4) (3-) -P in the water. The presence of algae during the incubation had a regionally variable effect on sediment nutrient profiles. In the absence of decaying algae (treatment WS), sediment nutrient concentrations decreased during the incubation. In the presence of blooms (WSA), sediments from the river mouth released P to the overlying water, while sediments from other regions absorbed surplus P from the water. This experiment showed that large-scale algal decay will dramatically affect nutrient cycling at the sediment-water interface and would potentially transfer the function of sediment as "container" or "supplier" in Taihu, although oxygen exchange with atmosphere in lake water was stronger than in columns. The magnitude of the effect depends on the physical-chemical character of the sediments.

Authors+Show Affiliations

State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22825639

Citation

Zhu, Mengyuan, et al. "Influence of Algal Bloom Degradation On Nutrient Release at the Sediment-water Interface in Lake Taihu, China." Environmental Science and Pollution Research International, vol. 20, no. 3, 2013, pp. 1803-11.
Zhu M, Zhu G, Zhao L, et al. Influence of algal bloom degradation on nutrient release at the sediment-water interface in Lake Taihu, China. Environ Sci Pollut Res Int. 2013;20(3):1803-11.
Zhu, M., Zhu, G., Zhao, L., Yao, X., Zhang, Y., Gao, G., & Qin, B. (2013). Influence of algal bloom degradation on nutrient release at the sediment-water interface in Lake Taihu, China. Environmental Science and Pollution Research International, 20(3), 1803-11. https://doi.org/10.1007/s11356-012-1084-9
Zhu M, et al. Influence of Algal Bloom Degradation On Nutrient Release at the Sediment-water Interface in Lake Taihu, China. Environ Sci Pollut Res Int. 2013;20(3):1803-11. PubMed PMID: 22825639.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of algal bloom degradation on nutrient release at the sediment-water interface in Lake Taihu, China. AU - Zhu,Mengyuan, AU - Zhu,Guangwei, AU - Zhao,Linlin, AU - Yao,Xin, AU - Zhang,Yunlin, AU - Gao,Guang, AU - Qin,Boqiang, Y1 - 2012/07/24/ PY - 2012/05/11/received PY - 2012/07/05/accepted PY - 2012/7/25/entrez PY - 2012/7/25/pubmed PY - 2013/4/23/medline SP - 1803 EP - 11 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 20 IS - 3 N2 - Algal bloom could drastically influence the nutrient cycling in lakes. To understand how the internal nutrient release responds to algal bloom decay, water and sediment columns were sampled at 22 sites from four distinct regions of China's eutrophic Lake Taihu and incubated in the laboratory to examine the influence of massive algal bloom decay on nutrient release from sediment. The column experiment involved three treatments: (1) water and sediment (WS); (2) water and algal bloom (WA); and (3) water, sediment, and algal bloom (WSA). Concentrations of dissolved oxygen (DO), total nitrogen (TN), total phosphorus (TP), ammonium (NH (4) (+) -N), and orthophosphate (PO (4) (3-) -P) were recorded during incubation. The decay of algal material caused a more rapid decrease in DO than in the algae-free controls and led to significant increases in NH (4) (+) -N and PO (4) (3-) -P in the water. The presence of algae during the incubation had a regionally variable effect on sediment nutrient profiles. In the absence of decaying algae (treatment WS), sediment nutrient concentrations decreased during the incubation. In the presence of blooms (WSA), sediments from the river mouth released P to the overlying water, while sediments from other regions absorbed surplus P from the water. This experiment showed that large-scale algal decay will dramatically affect nutrient cycling at the sediment-water interface and would potentially transfer the function of sediment as "container" or "supplier" in Taihu, although oxygen exchange with atmosphere in lake water was stronger than in columns. The magnitude of the effect depends on the physical-chemical character of the sediments. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/22825639/Influence_of_algal_bloom_degradation_on_nutrient_release_at_the_sediment_water_interface_in_Lake_Taihu_China_ DB - PRIME DP - Unbound Medicine ER -