Recommendations to unify phenological observations in Russia

Alexander А. Minin, Aleksandr Ananin, United Administration of Barguzinskiy State Nature Biosphere Reserve and Zabaikalsky National Park, Yuri Buyvolov, Prioksko-Terrasny State Nature Biosphere Reserve, Evgeniy Larin, Natural Park «Kondinsky Lakes», Pavel Lebedev, Natalia Polikarpova, Pasvik State Nature Reserve, Irina Prokosheva, Visherskiy State Nature Reserve, Marina Rudenko, Crimean National Park, Inna Sapelnikova, Voronezh State Nature Biosphere Reserve, Violetta Fedotova, Elena A. Shuyskaya, Central Forest State Nature Biosphere Reserve, Marina Yakovleva, Kivach State Nature Reserve, Oksana Yantser