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| 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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| Ar Gall, E; Le Duff, M.; Sauriau, P. -g.; De Casamajor, Marie-noelle; Gevaert, F.; Poisson, E.; Hacquebart, P.; Joncourt, Y.; Barille, Anne-laure; Buchet, Remi; Breret, M.; Miossec, Laurence. |
| An index CCO (cover, characteristic species, opportunistic species) has been developed for the implementation of the European Water Framework Directory (WFD) in coastal waters, using intertidal macroalgal communities as bio-indicator (Biological Quality Element). CCO is based on the calculation of three metrics corresponding to the global cover of macroalgal communities (metric 1), the number of characteristic species per topographic level/seaweed community (metric 2) and the cover of opportunistic species (metric 3). The final rating is obtained by pooling the scores of the three metrics. Results are given for 32 sites in 29 water bodies, grouped into four biogeographic regions along the Channel–Atlantic coasts of France. Over the six-year study, most of... |
| Tipo: Text |
Palavras-chave: Water Framework Directory; Macroalgal communities; Intertidal seaweeds; Quality index; Coastal water bodies. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00273/38445/37198.pdf |
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