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Epilithic algal communities and their relationship to environmental variables in lakes of the English Lake District.

King, Lydia and Barker, Philip and Jones, Roger I. (2000) Epilithic algal communities and their relationship to environmental variables in lakes of the English Lake District. Freshwater Biology, 45 (4). pp. 425-442. ISSN 0046-5070

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Abstract

1. The relationship between epilithic algal communities and 17 environmental variables from 17 oligo- to eutrophic lakes in the English Lake District was explored using canonical correspondence analysis (CCA). Total phosphorus (TP) and calcium (Ca) concentration were the most important variables accounting for species distribution. 2. Weighted-averaging regression and calibration models with tolerance downweighting and classical deshrinking were developed to infer TP, Ca, dissolved inorganic carbon (DIC) and conductivity from the relative abundance of 138 epilithic algal taxa. 3. The ranges of the environmental variables covered by the models are 0.8-49.2 μg L−1 for TP, 2.2–13.0 mg L−1 for Ca, 0.5–8.6 mg L−1 for DIC and 38–124 μS cm−1 for conductivity. Within these limits the models can be used to infer chemical properties of lakes from epilithic communities in the English Lake District. 4. The major advantages of using transfer functions based on epilithic communities are the low logistic requirements and the integrative character of algal samples compared to direct point measurements of chemical parameters of the lakes.

Item Type: Article
Journal or Publication Title: Freshwater Biology
Uncontrolled Keywords: conductivity • English Lake District • epilithon • total phosphorus • transfer function
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
Faculty of Science and Technology > School of Computing & Communications
ID Code: 10874
Deposited By: Mr Richard Ingham
Deposited On: 25 Jul 2008 13:40
Refereed?: Yes
Published?: Published
Last Modified: 18 Sep 2013 15:59
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/10874

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