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Small-scale effects of hydrodynamics on the structure of intertidal macroalgal communities: A novel approach ArchiMer
Burel, Thomas; Schaal, Gauthier; Grall, Jacques; Le Duff, Michel; Chapalain, Georges; Schmitt, Blondie; Gemin, Maxence; Boucher, Olivier; Ar Gall, Erwan.
Wave height was used as a proxy to assess the effect of hydrodynamics on the development and structure of intertidal North-East Atlantic rocky macroalgal communities (Brittany). The characterization of hydrodynamics at small-scale (about 10 m) was performed through wave height in situ monitoring using pressure sensors. Both the diversity and the cover of the macroalgal communities were sampled in parallel. Wave heights exhibit large variations with values ranging from ca. 5 cm to 1.60 m. We show that wave height directly controls the cover of macroalgal canopies (Pearson's r between −0.62 and −0.39). In all communities, most of the fucoid covers regressed with increasing wave height values. By contrast, positive correlations were found at low shore levels...
Tipo: Text Palavras-chave: Macroalgal communities; Intertidal zone; Rocky shores; Wave heights; Hydrodynamics; Mini-diver; Brittany.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00506/61769/65752.pdf
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