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Title

Shallow Cystoseira (Fucales: Ochrophyta) assemblages thriving in sheltered areas from Menorca (NW Mediterranean): Relationships with environmental factors and anthropogenic pressures.

AuthorsSales, Marta ; Ballesteros, Enric
KeywordsAnthropogenic disturbances
Bioindicators
Cystoseira
NW Mediterranean
Geomorphological factors
Issue Date2009
PublisherElsevier
CitationEstuarine Coastal and Shelf Science 84(4) : 476-482 (2009)
AbstractThe distribution of Cystoseira species was studied at 103 coves in the island of Menorca (Balearic Islands, NW Mediterranean). Both geomorphological parameters and anthropogenicpressures were considered in order to investigate which were the main environmentalfactors explaining their distribution. Several factors contributed to explain the composition of Cystoseiraassemblages in the sampled coves being coastal morphology, bottom nature, nutrient concentration in seawater and urbanization level of the coast the most important. The relatively high number of Cystoseira species found in Menorca suggested a general high quality of the environment. However, in southern coves the number and abundance of Cystoseira spp. was reduced compared to the northern ones. This pattern seems to be related both to a higher anthropogenic pressure and to a less favourable geomorphology at southern coves. When strong anthropogenic disturbances were present (proximity to harbour areas), coves were completely devoid of Cystoseira specimens. As historical data is available for some of these sites, we can document the disappearance of some Cystoseira species at these coves, which seems to be related to increased pollution levels. However, as the absence of Cystoseiraassemblages can also respond to a lack of a suitable geomorphology, their use as bioindicators of water quality needs of a definition of proper reference sites.
Description7 páginas, 4 figuras, 3 tablas.
Publisher version (URL)http://dx.doi.org/10.1016/j.ecss.2009.07.013
URIhttp://hdl.handle.net/10261/57799
DOI10.1016/j.ecss.2009.07.013
ISSN0272-7714
Appears in Collections:(CEAB) Artículos
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