Макарова, О. А. Фенологический атлас растений / Н. В. Поликарпова, О. А. Макарова ; М-во природ. ресурсов и экологии Рос. Федерации, Федер. гос. бюджет. учреждение «Гос. природ. заповедник «Пасвик» ; [худож.: Хохлов В. А. ; пер.: Кислова О. С.]. - Рязань : Голос губернии, 2016. – 235 с. : цв. ил., карты, табл.

Nature's calendars 207 trees, and on April 30 on eleven trees. The onset of the event in this case is on April 27, and the peak is on April 30. The main output of phenological observations is the calendar date of a specific phase transition. As a rule, our regular calendar is used to this end, but for statistical purposes it needs to be converted to the Julian calendar, i.e. a continuous digital series starting January I s1(Appendix 3) or another unified system (Appendix 4). The number of indices recorded from a route can be expanded to include more sub-phases and details, depending on the aims of the study. The system we suggest here is the foundation one can build upon when preparing phenological monitoring programmes. Each of the 16 principal phenophases (Tab. 2) are described and illustrated below. The illustrations are scanned images of live plants and photographs. Phase descriptions are based on various sources, references to which are in abbreviated form for convenience, and full bibliographic references can be found in the list of cited literature.