Geoscience Reference
In-Depth Information
Figure 7.3
The extent of channel resectioning and Biochemical Oxygen Demand in the River Wye catchment.
Left-hand maps show the raw data; right-hand maps show the top 10% of pixels from interpolated data for individual
pressures (grey shading) and joint pressure 'hot spots' (black shading).
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Crown copyright, Ordnance Survey. All
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Revealing relationships
between biology, water quality
and physical habitat
organisms and their physical or chemical
environment. Nevertheless, some areas remain
weak, such as the effects of multiple stressors
(Ormerod
et al
., 2010) or properly quantified
relationships between ecology and physical habitat
(Vaughan
et al
., 2009). Such weaknesses have been
There is a long history and extensive literature
studying
the
relationships
between
aquatic
