Abstract
Benthic macroalgal communities constitute one of the ecological quality elements needed to implement the Water Framework Directive (2000/60/EC), the legislation targetted at sustainable management of the European aquatic environment. As the Directive foresees the establishment of Ecological Status Class boundaries and Reference Conditions in coastal waters, a study was conducted on the Attica coast of Greece to identify the best method to use macroalgal community data for evaluating ecological quality and at the same time keep the program within a low budget. Six seasonal quantitative and qualitative samples were taken from the upper infralittoral macroalgal communities on the Attica coast of Greece on six occasions between summer 1998 and spring 2002; these sites, which reflect a gradient of anthropogenic perturbation, were used on each occasion. A list of 60 macroalgal taxa was prepared, the cover value of each taxon was measured and the structure of the vegetation was described. The use of four different indices (Shannon-Weaver index, Pielou evenness, Multi-Dimensional Scaling plot of Bray-Curtis similarity, Ecological Evaluation index-EEI) were compared. The multidimensional scaling of Bray-Curtis similarity and the EEI were better at indicating the perturbation pattern of the study area. However, only the EEI succeeded in distinguishing four quality classes (‘low’ to ‘high’). By using EEI, a spatial scale-weighted evaluation of ecological quality was also performed.
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Panayotidis, P., Montesanto, B. & Orfanidis, S. Use of low-budget monitoring of macroalgae to implement the European Water Framework Directive. Journal of Applied Phycology 16, 49–59 (2004). https://doi.org/10.1023/B:JAPH.0000019114.47824.42
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DOI: https://doi.org/10.1023/B:JAPH.0000019114.47824.42