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Long-term Changes in Sublittoral Macroalgal Assemblages Related to Water Quality Improvement by Susana Pinedo; Mikel Zabala; Enric Ballesteros is a Earth and Planetary Sciences article available to read on EtoBox.

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## Abstract Sampling of sublittoral macroalgal assemblages was carried out in 1982 and 1999 along the coast of Catalonia (Northwestern Mediterranean, Spain) in order to study long-term changes in species composition. Ordination analysis revealed significant differences in species composition and abundance between the two study periods. The number of stations with indicators of eutrophication, such as species of __Chaetomorpha__, __Cladophora__, and __Ulva__, decreased from 1982 to 1999. This decrease was not balanced by an increase in species typical of pristine environments, such as large perennial brown algae (in particular, __Cystoseira mediterranea__), but rather by an increase of stress-resistant species such as __Corallina elongata__. The observed shifts seem to be driven by the decrease in nutrient loadings in the water column, resulting from the progressive implementation of sewage treatment management in the study region since the mid-1970s.

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Author

Susana Pinedo; Mikel Zabala; Enric Ballesteros

Publisher

Walter de Gruyter GmbH

Published

2013

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)