Southern littoral
Italy
Venice
Ulva lactuta
lagoon
Gracilaria verrucosa
Valonia agropila
Spain
Ulva sp.
Enteromorpha sp.
Portugal
Ulva sp.
Enteromorpha sp.
France
Ponds
and
Ulva lactuta
lagoons of
Ulva rigida
Languedoc
Enteromorpha flexuosa
Roussilon
Enteromorpha prolifera
15
1000000
5-10
April-June
5
March - April
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