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Further evidence of elemental composition as an indicator of the bioavailability of humic substances to bacteria.

Hunt, A. P. and Parry, Jackie D. and Hamilton-Taylor, John (2000) Further evidence of elemental composition as an indicator of the bioavailability of humic substances to bacteria. Limnology and Oceanography, 45 (1). pp. 237-241. ISSN 0024-3590

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Abstract

Batch culture experiments examined the ability of an isolated bacterial community to utilize four humic substances with similar molecular size but variable elemental composition. Univariate and multivariate linear regression analysis of the results provided evidence of a significant positive relationship between the N: C ratio and bacterial concentrations. In contrast, neither H: C nor O: C ratios were significant predictors of humic substances bioavailability, and their inclusion in the multivariate model provided no further explanatory power compared with the univariate model using N: C as the single independent variable. These findings suggest that N: C ratios provide the best indicator of bioavailability for complex, recalcitrant carbon moieties typical of many aquatic systems.

Item Type: Article
Journal or Publication Title: Limnology and Oceanography
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
Faculty of Health and Medicine
Faculty of Health and Medicine > Biomedical & Life Sciences
ID Code: 9281
Deposited By: Dr Jackie Parry
Deposited On: 03 Jun 2008 13:33
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:34
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9281

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