Urban stormwater inputs to an adapted coastal wetland : role in water treatment and impacts on wetland biota

Howitt,JA, Mondon,J, Mitchell,BD, Kidd,T and Eshelman,B 2014, Urban stormwater inputs to an adapted coastal wetland : role in water treatment and impacts on wetland biota, Science of the Total Environment, vol. 485-486, pp. 534-544, doi: 10.1016/j.scitotenv.2014.03.101.

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Title Urban stormwater inputs to an adapted coastal wetland : role in water treatment and impacts on wetland biota
Author(s) Howitt,JA
Mondon,JORCID iD for Mondon,J orcid.org/0000-0002-0643-7540
Mitchell,BD
Kidd,T
Eshelman,B
Journal name Science of the Total Environment
Volume number 485-486
Start page 534
End page 544
Total pages 11
Publisher Elsevier
Place of publication Amsterdam , Netherlands
Publication date 2014-07-01
ISSN 1879-1026
Keyword(s) Bioaccumulation
Constructed wetland
Heavy metals
Nutrients
PAH
Sediments
Science & Technology
Life Sciences & Biomedicine
Environmental Sciences
Environmental Sciences & Ecology
POLYCYCLIC AROMATIC-HYDROCARBONS
TYPHA-LATIFOLIA
RUNOFF
POLLUTION
QUALITY
METALS
FATE
LEAD
Australia
Cities
Environmental Monitoring
Metals, Heavy
Nitrogen
Phosphorus
Polycyclic Hydrocarbons, Aromatic
Rain
Waste Disposal, Fluid
Water Pollutants, Chemical
Wetlands
Summary The Lake Pertobe wetland system is a semi-natural wetland that has been modified primarily for recreational use. However, this lake system receives stormwater from much of the central business district of Warrnambool City (Victoria, Australia) and serves as a buffer zone between the stormwater system and the Merri River and Merri Marine Sanctuary. This work considers the impact of stormwater inputs on Lake Pertobe and the effectiveness of the lake in protecting the associated marine sanctuary. Sediment contaminants (including heavy metals and polycyclic aromatic hydrocarbons (PAHs)) and water quality parameters within the lake, groundwater and stormwater system were measured. Water quality parameters were highly variable between stormwater drains and rain events. Suspended solids rapidly settled along open drains and shortly after entering the lake. Groundwater inputs increased both salinity and dissolved nitrogen in some stormwater drains. Some evidence of bioaccumulation of metals in the food chain was identified and sediment concentrations of several PAHs were very high. The lake acted as a sink for PAHs and some metals and reductions in Escherichia coli, biological oxygen demand and total phosphorus were observed, affording some protection to the associated marine sanctuary. Nutrient retention was inadequate overall and it was identified that managing the lake primarily as a recreational facility impacted on the effectiveness of stormwater treatment in the system.
Language eng
DOI 10.1016/j.scitotenv.2014.03.101
Field of Research 050304 Soil Chemistry (excl Carbon Sequestration Science)
Socio Economic Objective 961499 Soils not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30068216

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