Tags

Type your tag names separated by a space and hit enter

Eutrophic urban ponds suffer from cyanobacterial blooms: Dutch examples.
Environ Sci Pollut Res Int. 2014; 21(16):9983-94.ES

Abstract

Ponds play an important role in urban areas. However, cyanobacterial blooms counteract the societal need for a good water quality and pose serious health risks for citizens and pets. To provide insight into the extent and possible causes of cyanobacterial problems in urban ponds, we conducted a survey on cyanobacterial blooms and studied three ponds in detail. Among 3,500 urban ponds in the urbanized Dutch province of North Brabant, 125 showed cyanobacterial blooms in the period 2009-2012. This covered 79% of all locations registered for cyanobacterial blooms, despite the fact that urban ponds comprise only 11% of the area of surface water in North Brabant. Dominant bloom-forming genera in urban ponds were Microcystis, Anabaena and Planktothrix. In the three ponds selected for further study, the microcystin concentration of the water peaked at 77 μg l(-1) and in scums at 64,000 μg l(-1), which is considered highly toxic. Microcystin-RR and microcystin-LR were the most prevalent variants in these waters and in scums. Cyanobacterial chlorophyll-a peaked in August with concentrations up to 962 μg l(-1) outside of scums. The ponds were highly eutrophic with mean total phosphorus concentrations between 0.16 and 0.44 mg l(-1), and the sediments were rich in potential releasable phosphorus. High fish stocks dominated by carp lead to bioturbation, which also favours blooms. As urban ponds in North Brabant, and likely in other regions, regularly suffer from cyanobacterial blooms and citizens may easily have contact with the water and may ingest cyanobacterial material during recreational activities, particularly swimming, control of health risk is of importance. Monitoring of cyanobacteria and cyanobacterial toxins in urban ponds is a first step to control health risks. Mitigation strategies should focus on external sources of eutrophication and consider the effect of sediment P release and bioturbation by fish.

Authors+Show Affiliations

Aquatic Ecology & Water Quality Management Group, Department of Environmental Sciences, Wageningen University, P.O. Box 47, 6700 AA, Wageningen, The Netherlands, g.waajen@brabantsedelta.nl.No affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

24798921

Citation

Waajen, Guido W A M., et al. "Eutrophic Urban Ponds Suffer From Cyanobacterial Blooms: Dutch Examples." Environmental Science and Pollution Research International, vol. 21, no. 16, 2014, pp. 9983-94.
Waajen GW, Faassen EJ, Lürling M. Eutrophic urban ponds suffer from cyanobacterial blooms: Dutch examples. Environ Sci Pollut Res Int. 2014;21(16):9983-94.
Waajen, G. W., Faassen, E. J., & Lürling, M. (2014). Eutrophic urban ponds suffer from cyanobacterial blooms: Dutch examples. Environmental Science and Pollution Research International, 21(16), 9983-94. https://doi.org/10.1007/s11356-014-2948-y
Waajen GW, Faassen EJ, Lürling M. Eutrophic Urban Ponds Suffer From Cyanobacterial Blooms: Dutch Examples. Environ Sci Pollut Res Int. 2014;21(16):9983-94. PubMed PMID: 24798921.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Eutrophic urban ponds suffer from cyanobacterial blooms: Dutch examples. AU - Waajen,Guido W A M, AU - Faassen,Elisabeth J, AU - Lürling,Miquel, Y1 - 2014/05/06/ PY - 2013/12/10/received PY - 2014/04/21/accepted PY - 2014/5/7/entrez PY - 2014/5/7/pubmed PY - 2015/5/12/medline SP - 9983 EP - 94 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 21 IS - 16 N2 - Ponds play an important role in urban areas. However, cyanobacterial blooms counteract the societal need for a good water quality and pose serious health risks for citizens and pets. To provide insight into the extent and possible causes of cyanobacterial problems in urban ponds, we conducted a survey on cyanobacterial blooms and studied three ponds in detail. Among 3,500 urban ponds in the urbanized Dutch province of North Brabant, 125 showed cyanobacterial blooms in the period 2009-2012. This covered 79% of all locations registered for cyanobacterial blooms, despite the fact that urban ponds comprise only 11% of the area of surface water in North Brabant. Dominant bloom-forming genera in urban ponds were Microcystis, Anabaena and Planktothrix. In the three ponds selected for further study, the microcystin concentration of the water peaked at 77 μg l(-1) and in scums at 64,000 μg l(-1), which is considered highly toxic. Microcystin-RR and microcystin-LR were the most prevalent variants in these waters and in scums. Cyanobacterial chlorophyll-a peaked in August with concentrations up to 962 μg l(-1) outside of scums. The ponds were highly eutrophic with mean total phosphorus concentrations between 0.16 and 0.44 mg l(-1), and the sediments were rich in potential releasable phosphorus. High fish stocks dominated by carp lead to bioturbation, which also favours blooms. As urban ponds in North Brabant, and likely in other regions, regularly suffer from cyanobacterial blooms and citizens may easily have contact with the water and may ingest cyanobacterial material during recreational activities, particularly swimming, control of health risk is of importance. Monitoring of cyanobacteria and cyanobacterial toxins in urban ponds is a first step to control health risks. Mitigation strategies should focus on external sources of eutrophication and consider the effect of sediment P release and bioturbation by fish. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/24798921/Eutrophic_urban_ponds_suffer_from_cyanobacterial_blooms:_Dutch_examples_ L2 - https://dx.doi.org/10.1007/s11356-014-2948-y DB - PRIME DP - Unbound Medicine ER -