Off flavours in large waterbodies: physics, chemistry and biology in synchrony.
Water Sci Technol
; 55(5): 1-8, 2007.
Article
em En
| MEDLINE
| ID: mdl-17489387
ABSTRACT
The Laurentian Great Lakes of North America are a drinking water source for millions of Canadian and US consumers. These waterbodies have undergone extensive change over the past century as a result of widespread degradation and remediation. Many of the Lakes are prone to taste and odour (T&O), and although these outbreaks have been poorly monitored, evidence suggests that they are increasing in frequency. Tracing and controlling T&O in such large systems presents a challenging task, due to their physical size and complexity. This paper presents an overview of recent investigative and management approaches to T&O in Lake Ontario and its outflow, the St. Lawrence River. We have identified three distinct patterns of T&O in these source-waters, caused by geosmin and 2-methylisoborneol and differing in their planktonic and benthic sources, and temporal and spatial dynamics. Each pattern has required a different approach by scientists and management, in partnership with the water industry. We have shown these T&O outbreaks are caused and moderated by physical, chemical and biological mechanisms over a spectrum of spatial and temporal scales. Canadian municipalities affected by these outbreaks have been key to the investigation of the links between T&O and ecosystem processes with the aim to develop more proactive water treatment and long-term management.
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Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Abastecimento de Água
/
Bioquímica
/
Água
/
Monitoramento Ambiental
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article