The effect of any given activity on an environmental factor is dependant on the site or location of that activity. Similarly, the magnitude, duration, frequency and extent of the change in an environmental factor will be dependant on:
the type of activity;
its scale;
its extent and magnitude;
its duration and frequency, as well as;
the nature of the receiving environment, and hence;
the location of the activity.
Therefore, the links in the following matrix represent the likelihood that environmental factors will change due to the construction, operation, or presence of the specified activity.
A link has been made in the matrix between a maritime activity and an environmental factor where:
the environmental effects of a given activity are known;
a relationship between a given activity and environmental effects has been reported; or
an activity is considered likely to change an environmental factor (the ‘precautionary principle’).
Please note that the matrix does not address:
the magnitude or significance of any environmental effect; or
indirect and cumulative effects.
The construction phases of most coastal and offshore developments have been addressed under ‘Development’ as a separate activity.
In addition, a distinction has been made between ‘probable’ and ‘possible’ links. A link is regarded as ‘probable’ where the activity was known (or had been shown) to change the relevant environmental factor in most instances. A link is regarded as ‘possible’ where an activity was likely to change the relevant environmental factor in some cases or in particular locations or situations.
For example it is highly ‘probable’ that:
capital dredging will result in the removal of sediment and hence substratum loss;
a coastal barrage will affect the hydrographic regime of the affected area and hence emergence and water flow rate; and
sewage discharges with high BOD and organic content will change the level of nutrients and oxygen concentration in the receiving waters
Similarly, it is ‘possible’ that:
benthic trawls or dredging activity will resuspend sediment and hence release contaminants within the sediments, where contaminated sediments occur.
The matrix identifies the probable effects of maritime activities in most cases. However, all eventualities can not be considered in a study of this kind, and the matrix should be interpreted as generic guidance and should not be considered comprehensive. A detailed study of the magnitude or significance of the environmental effects on an activity (or project proposal) is site dependant and the province of an environmental impact assessment.
The effect of any given activity on an environmental factor is dependant on the site or location of that activity. Similarly, the magnitude, duration, frequency and extent of the change in an environmental factor will be dependant on:
the type of activity;
its scale;
its extent and magnitude;
its duration and frequency, as well as;
the nature of the receiving environment, and hence;
the location of the activity.
Therefore, the links in the following matrix represent the likelihood that environmental factors will change due to the construction, operation, or presence of the specified activity.
A link has been made in the matrix between a maritime activity and an environmental factor where:
the environmental effects of a given activity are known;
a relationship between a given activity and environmental effects has been reported; or
an activity is considered likely to change an environmental factor (the ‘precautionary principle’).
Please note that the matrix does not address:
the magnitude or significance of any environmental effect; or
indirect and cumulative effects.
The construction phases of most coastal and offshore developments have been addressed under ‘Development’ as a separate activity.
In addition, a distinction has been made between ‘probable’ and ‘possible’ links. A link is regarded as ‘probable’ where the activity was known (or had been shown) to change the relevant environmental factor in most instances. A link is regarded as ‘possible’ where an activity was likely to change the relevant environmental factor in some cases or in particular locations or situations.
For example it is highly ‘probable’ that:
capital dredging will result in the removal of sediment and hence substratum loss;
a coastal barrage will affect the hydrographic regime of the affected area and hence emergence and water flow rate; and
sewage discharges with high BOD and organic content will change the level of nutrients and oxygen concentration in the receiving waters
Similarly, it is ‘possible’ that:
benthic trawls or dredging activity will resuspend sediment and hence release contaminants within the sediments, where contaminated sediments occur.
The matrix identifies the probable effects of maritime activities in most cases. However, all eventualities can not be considered in a study of this kind, and the matrix should be interpreted as generic guidance and should not be considered comprehensive. A detailed study of the magnitude or significance of the environmental effects on an activity (or project proposal) is site dependant and the province of an environmental impact assessment.
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