structure independently from median sediment grain-size and that the notion of ecosystem
health is rather subjective: in the present case, we recorded “good health” in terms of
seagrass development,“no impact” in terms of macrobenthic biotic indices and “negative
effect” for a given key-population. The occurrence and development of a Z. noltii seagrass
bed was surveyed at Banc d'Arguin, Arcachon Bay (France), to estimate the modification of …