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1 Державний природознавчий музей НАН України, м. Львів
e-mail: kaprus63@gmail.com
2 Львівський національний університет імені Івана Франка
e-mail: st.sidak@gmail.com

Sidak S.Y., Kaprus I.Y.
Сollembola population of woody microhabitats of old-growth forests of the Eastern Carpathians
For the first time, we analyzed the taxonomic and ecological structure of collembola in different
types of tree-related microhabitats (TreMs), in the old-growth forests of local importance “Primeval
and quasi-primeval forests of Gan’kovyts’ke forestry” of the State Enterprise “Svaliava Forestry” and
the slopes of the Buchok ridge of the National Nature Park “Boykivshchyna”. In the studied areas, 80
species of Collembola belonging to 44 genera and 14 families were identified. The population density
of Collembola in different microhabitat types ranged from 11 to 183 individuals per dm³. The group of
abundant species (eudominants, dominants, and subdominants) included 20 taxa. A specialized
dendrophilous taxocene of Collembola was found to form within the investigated arboreal
microhabitats. It is characterized by the predominance of forest species and a high proportion of
corticolous forms (together making up 88.04%), which allows it to be regarded as an ecologically
stable species complex, adapted to long-term existence in the aboveground layer of mountain forest
ecosystems.The analysis revealed that 32.5% of Collembola species belong to rare and unique taxa, a
figure three times higher than their representation in the soil-litter layer of mountain forest ecosystems
of the Carpathians. This highlights the importance of conserving old-growth forests as key refuges for
the diversity of rare Collembola and, likely, other arthropod species.
Keywords: biodiversity, old-growth forests, woody microhabitats, collembola, ecological structure,
fauna, bioindication, animal protection.