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Macrophyte functional variables versus species assemblages as predictors of trophic status in flowing waters

Ali, M.M., Murphy, K.J., and Abernethy, V.J. (1999) Macrophyte functional variables versus species assemblages as predictors of trophic status in flowing waters. Hydrobiologia, 415 . pp. 131-138. ISSN 0018-8158

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Publisher's URL: http://link.springer.com/article/10.1023/A%3A1003833419359?null

Abstract

A series of models was developed using functionally-derived variables (mainly based on morphological attributes of freshwater macrophytes) to predict the trophic status of river and associated channel systems. The models were compared with an existing species-assemblage based procedure for predicting British river trophic conditions (the Macrophyte Trophic Ranking scheme, MTR). We compared sites in cooler temperate conditions (in Scotland) and warmer, sub-tropical conditions (in Egypt). In total, we made measurements of 13 traits from >600 individual plant specimens of 33 species growing at 42 sites (divided into independent input and test site datasets). N status (as annual mean concentration in water of total oxidised nitrogen, TON) was only very poorly predicted by this approach. However, P (as annual mean concentration in water of soluble reactive phosphate, SRP) was better predicted: both by a model based on MTR (r =

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Murphy, Dr Kevin
Authors: Ali, M.M., Murphy, K.J., and Abernethy, V.J.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Journal Name:Hydrobiologia
Publisher:Springer Verlag
ISSN:0018-8158
ISSN (Online):1573-5117

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
199861Macrophyte functional groups v.species assemblages as predictors of trophic status in riversKevin MurphyNatural Environment Research Council (NERC)GR9/02474RI BIODIVERSITY ANIMAL HEALTH & COMPMED