Water quality data (summer means) were examined in relation to invertebrate data for 1997 (a dry summer) and 1998 (a wet summer). In 1997, the Anglian region had ‘the lowest rainfall in the UK’ [16] with a total rainfall of only 577 mm. A dry summer followed a dry spring, in which March and April culminated in ‘the driest 24-month period in England and Wales rainfall period since at least the 1850sy’ [16]. The region also
had 20–50% below-average rainfall during September. This coincided with, or resulted in, ‘remarkably depressed flows’ in eastern England during the whole of this year, with ‘a significant proportion of rivers in the English lowlands registering their second lowest annual flow on record’ [16]. In contrast, eastern England had annual rainfall 20% above average during 1998 (719mm for the year, which was ‘substantially above average’),
with June being ‘the third wettest in 120 years’ [16].
Water quality data (summer means) were examined in relation to invertebrate data for 1997 (a dry summer) and 1998 (a wet summer). In 1997, the Anglian region had ‘the lowest rainfall in the UK’ [16] with a total rainfall of only 577 mm. A dry summer followed a dry spring, in which March and April culminated in ‘the driest 24-month period in England and Wales rainfall period since at least the 1850sy’ [16]. The region also
had 20–50% below-average rainfall during September. This coincided with, or resulted in, ‘remarkably depressed flows’ in eastern England during the whole of this year, with ‘a significant proportion of rivers in the English lowlands registering their second lowest annual flow on record’ [16]. In contrast, eastern England had annual rainfall 20% above average during 1998 (719mm for the year, which was ‘substantially above average’),
with June being ‘the third wettest in 120 years’ [16].
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