The site San Rossore 2, with ICOS code IT-SR2, is located inside the Parco Regionale Migliarino, San Rossore, Massaciuccoli approximately 8 Km west of Pisa. The ecosystem under investigation is a very homogeneous and dense stand of Pinus pinea L., in addition only scarce occurrences of Quercus ilex L., Fraxinus excelsior L. and Alnus glutinosa (L.)Gaertn.