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Title: Determining The Causes Of 'Apparent Eutrophication' Effects
Author: J Hilton
Author: G P Irons
Author: Environment Agency
Document Type: Monograph
Annotation: Environment Agency Project ID:EAPRJOUT_423, Representation ID: 122, Object ID: 1762
When the symptoms of eutrophication are observed in a river the common assumption is that excess nutrients from sewage treatment -works upstream are the cause and that the appropriate response is to remove phosphorus from the effluent. Howeverthere are many other causes which can result in the changesa to aquatic asystems. which resemble the- effects of eutrophication. The possibility that one of these effects is a cause.needs to be considered, and discounted, at an early stage, before proceeding to, consider P control from point or diffuse sources. In this document the factors-which control-plant growth have beenlisted. On the basis of these factors and following. wide consultation amongst. agency staff, a list of potential causes of eutrophic. effects has been derived. A simple checklist scheme :is proposed to assess the likelihood that any of these alternative causes may be driving the ,observed effects. Since, at this,. : stage, the:-effects have not been confirmed as eutrophication; -i.e. excessive growth of aquatic plants due to the presence of excess nutrients. introduced from, anthropogenic sources, the, stage has been termed aApparent Eutrophicationa. It is recommended that the ease of use and completeness of-the list of potential causes of effects be assessed regularly. R and D Technical Report P203 R and D Technical Report P203 2 2.
Publisher: Environment Agency
Subject Keywords: Aquatic plant; National rivers authority; Eutrophication; Nutrient
Extent: 32
Total file downloads: 13

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