Monteith, DT and Hildrew, AG and Flower, RJ and Raven, PJ and Beaumont, WRB and Collen, P and Kreiser, AM and Shilland, EM and Winterbottom, JH (2005) Biological responses to the chemical recovery of acidified fresh waters in the UK. ENVIRON POLLUT , 137 (1) 83 - 101. 10.1016/j.envpol.2004.12.026.
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Abstract
We report biological changes at several UK Acid Waters Monitoring Network lakes and streams that are spatially consistent with the recovery of water chemistry induced by reductions in acid deposition. These include trends toward more acid-sensitive epilithic diatom and macroinvertebrate assemblages, an increasing proportional abundance of macroinvertebrate predators, an increasing occurrence of acid-sensitive aquatic macrophyte species, and the recent appearance of juvenile (< 1 year old) brown trout in some of the more acidic flowing waters. Changes are often shown to be directly linked to annual variations in acidity. Although indicative of biological improvement in response to improving water chemistry, "recovery" in most cases is modest and very gradual. While specific ecological recovery endpoints are uncertain, it is likely that physical and biotic interactions are influencing the rate of recovery of certain groups of organisms at particular sites. (c) 2005 Elsevier Ltd. All rights reserved.
| Type: | Article |
|---|---|
| Title: | Biological responses to the chemical recovery of acidified fresh waters in the UK |
| DOI: | 10.1016/j.envpol.2004.12.026 |
| Keywords: | acidification, recovery, epilithic diatoms, macrophytes, macroinvertebrates, brown trout, ACID NEUTRALIZING CAPACITY, LONG-TERM TRENDS, SURFACE SEDIMENT, NORWEGIAN LAKES, KILLARNEY-PARK, ORGANIC-CARBON, ACIDIFICATION, STREAMS, ASSEMBLAGES, FISH |
| UCL classification: | UCL > School of Arts and Social Sciences > Faculty of Social and Historical Sciences > Geography |
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