Maxim P. Shashkov, Researcher, Institute of Physicochemical and Biological Problems in Soil Sciences of RAS (142290, Russia, Moscow Region, Pushchino, Institutskaya Street, 2); iD ORCID:; e-mail:
Maxim V. Bobrovsky, Dr.Sc., Leading Researcher, Institute of Physicochemical and Biological Problems in Soil Sciences of RAS (142290, Russia, Moscow Region, Pushchino, Institutskaya Street, 2); iD ORCID:; e-mail:
Vladimir N. Shanin, PhD, Senior Researcher, Institute of Physicochemical and Biological Problems in Soil Sciences of RAS (142290, Russia, Moscow Region, Pushchino, Institutskaya Street, 2); iD ORCID:; e-mail:
Larisa G. Khanina, PhD, Leading Researcher, Institute of Mathematical Problems of Biology of RAS – the Branch of the Keldysh Institute of Applied Mathematics of RAS (142290, Russia, Moscow Region, Pushchino, Professor Vitkevich Street, 1); iD ORCID:; e-mail:
Pavel Y. Grabarnik, Dr.Sc., Chief Researcher, Institute of Physicochemical and Biological Problems in Soil Sciences of RAS (142290, Russia, Moscow Region, Pushchino, Institutskaya Street, 2); iD ORCID:; e-mail:
Miroslav N. Stamenov, PhD, Researcher, Institute of Physicochemical and Biological Problems in Soil Sciences of RAS (142290, Russia, Moscow Region, Pushchino, Institutskaya Street, 2); e-mail:
Natalya V. Ivanova, PhD, Senior Researcher, Institute of Mathematical Problems of Biology of RAS – the Branch of the Keldysh Institute of Applied Mathematics of RAS (142290, Russia, Moscow Region, Pushchino, Professor Vitkevich Street, 1); iD ORCID:; e-mail:

Reference to article

Shashkov M.P., Bobrovsky M.V., Shanin V.N., Khanina L.G., Grabarnik P.Ya., Stamenov M.N., Ivanova N.V. 2022. Data on 30-year stand dynamics in an old-growth broad-leaved forest in the Kaluzhskie Zaseki State Nature Reserve, Russia. Nature Conservation Research 7(Suppl.1): 24–37.

Section Research articles

The article provides primary data on repeated tree measurements collected during two censuses on a permanent sampling plot (440 m × 200 m) established in the old-growth polydominant broad-leaved forest in the Kaluzhskie Zaseki State Nature Reserve (centre of European Russia). The time span between the inventories was 30 years, and a total of 11 578 individuals of ten tree, one shrub species, and several undefined tree species of three known genera were registered. During the surveys, tree identity, stem diameter at breast height (DBH) of 1.3 m, and life status (alive or dead) were recorded for every tree individual with DBH ≥ 5 cm. Additional attributes were determined for some individuals. Field data were digitised and compiled into the PostgreSQL database. An accurate data quality assessment, validation, and cleaning (with documentation of changes) have been performed before data standardisation according to the Darwin Core standard. Standardised data were published through the GBIF repository. From 1986 to 1988, 9811 individuals were recorded within the initial census, including 3920 Corylus avellana individual shrubs. Corylus avellana shrubs were recorded without measuring DBH. From 2016 to 2018, 7658 stems were recorded in the recensus, including 3090 living trees marked during the initial census, and 1641 other living trees reaching the DBH of at least 5 cm. Corylus avellana was not included in the recensus. Thus, over 30 years, about 65% of living tree individuals have survived, but the total number of living trees has not changed considerably. The mean diameter of shade-intolerant tree species (Quercus robur, Fraxinus excelsior, Populus tremula, and Betula spp.) has increased the most remarkably during 30 years. For these species, the increase in average diameter, along with the decrease in numbers, is associated with the death of young trees, presumably due to low illumination under the canopy. Contrastingly, shade-tolerant tree species (Ulmus glabra, Tilia cordata, Acer platanoides) increased in number, while their mean diameter increased slightly or even decreased, that evidences the successful regeneration of these species under the canopy. These data are relevant for investigating forest ecology questions at spatiotemporal scales as a model of natural succession.


Darwin Core, data quality assessment, GBIF, mesic temperate forest, permanent sampling plot

Artice information

Received: 27.09.2021. Revised: 30.12.2022. Accepted: 03.02.2022.

The full text of the article

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