Long-term natural acidification of upland sites in Cumbria: Evidence from post-glacial lake sediments

Pennington, W. (1984) Long-term natural acidification of upland sites in Cumbria: Evidence from post-glacial lake sediments. In: Fifty-second annual report for the year ended 31st March 1984. Ambleside, UK, Freshwater Biological Association, pp. 28-46. (Annual Report, Freshwater Biological Association, Ambleside)

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Abstract

Studies by the Freshwater Biological Association over the last 25 years have supplied data relevant to the levels of acidity in local soils and water before the onset of industrial pollution and current interest in acid rain. This article reviews published analysis from cores of lake sediments, in or near the catchment of the River Duddon. Electron spin resonance spectra of humic acids and iodine values confirm evidence from pollen analysis for a history of progressive acidification of the source material of lake sediments since before 5000 radiocarbon years, in upland catchments of the Lake District. Processes involved included: removal of basic ions from soils by rainfall, the effects of which were intensified by removal by man of deciduous forest; acidification of soils and waters by decomposition products of Calluna and further acidification of waters by Sphagnum species which colonized habitats where drainage became impeded by paludification processes.

Item Type: Book Section
Title: Long-term natural acidification of upland sites in Cumbria: Evidence from post-glacial lake sediments
Personal Creator/Author:
CreatorsEmail
Pennington, W.
Title of Book: Fifty-second annual report for the year ended 31st March 1984
Refereed: No
Series Name: Annual Report, Freshwater Biological Association, Ambleside
Page Range: pp. 28-46
Date: 1984
Publisher: Freshwater Biological Association
Place of Publication: Ambleside, UK
Issuing Agency: Freshwater Biological Association
Uncontrolled Keywords: Acid rain; Acidification; Freshwater lakes; Lake Basins; Lake deposits; pH; Palnology; England; Cumbria; Annual report
Subjects: Biology
Chemistry
Earth Sciences
Item ID: 5197
Depositing User: Mrs Christine Davey
Date Deposited: 10 May 2011 17:02
Last Modified: 29 Sep 2011 15:15
URI: http://aquaticcommons.org/id/eprint/5197

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