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Heterogeneity of forest mollusc communities as an effect of natural and anthropogenic conditions on the example of oak-hornbeam forests in the Wielkopolska region, midwestern Poland

Anna Jankowiak

Abstract

Heterogeneity of land mollusc communities in oak-hornbeam forests was studied in the Wielkopolska region, midwestern Poland, in 14 forests at 25 study sites, 11 with planted pine and 14 without it. Most of the 42 recorded gastropod species were typical of forests, widespread and common in Poland. The stenotopic species such as clausiliids and Merdigera obscura were restricted to well preserved forests. The presence and especially abundance of these species may, therefore, have some bioindicator values reflecting the forest conservation status. Between-site assemblage heterogeneity was an effect of both human impact and natural conditions. The former appeared in the occurrence or lack of planted pine, influencing the habitat conditions, thus oak-hornbeam forests with pine were poorer in gastropod species and individuals in almost all cases. The latter resulted from natural heterogeneity of oak-hornbean forests, reflected in various combinations of habitat factors. Habitat trophic conditions, cover of the herbaceous layer and the percentage of soft-leaved dendroflora, rich in an easily absorbable calcium, were the most important for molluscs. The group of significant factors also included a soil calcium content and soil pH. However, not a single element but a combination of habitat factors was decisive for the structure of particular mollusc communities.
Record ID
UAM17d281a2cb0245328c14a2798512b4d7
Diploma type
Doctor of Philosophy
Author
Title in Polish
Zróżnicowanie struktury leśnych zgrupowań ślimaków jako efekt uwarunkowań naturalnych i antropogenicznych na przykładzie grądów w Wielkopolsce
Title in English
Heterogeneity of forest mollusc communities as an effect of natural and anthropogenic conditions on the example of oak-hornbeam forests in the Wielkopolska region, midwestern Poland
Language
pol (pl) Polish
Certifying Unit
Faculty of Biology (SNP/WB/FoB) [Not active]
Discipline
environmental protection / (biological sciences domain) / (biological sciences)
Status
Finished
Year of creation
2016
Start date
28-02-2014
Defense Date
16-09-2016
Title date
23-09-2016
Supervisor
Keywords in English
broadleaf forests
Abstract in English
Heterogeneity of land mollusc communities in oak-hornbeam forests was studied in the Wielkopolska region, midwestern Poland, in 14 forests at 25 study sites, 11 with planted pine and 14 without it. Most of the 42 recorded gastropod species were typical of forests, widespread and common in Poland. The stenotopic species such as clausiliids and Merdigera obscura were restricted to well preserved forests. The presence and especially abundance of these species may, therefore, have some bioindicator values reflecting the forest conservation status. Between-site assemblage heterogeneity was an effect of both human impact and natural conditions. The former appeared in the occurrence or lack of planted pine, influencing the habitat conditions, thus oak-hornbeam forests with pine were poorer in gastropod species and individuals in almost all cases. The latter resulted from natural heterogeneity of oak-hornbean forests, reflected in various combinations of habitat factors. Habitat trophic conditions, cover of the herbaceous layer and the percentage of soft-leaved dendroflora, rich in an easily absorbable calcium, were the most important for molluscs. The group of significant factors also included a soil calcium content and soil pH. However, not a single element but a combination of habitat factors was decisive for the structure of particular mollusc communities.
Thesis file
  • File: 1
    Rozprawa doktorska.pdf
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Uniform Resource Identifier
https://researchportal.amu.edu.pl/info/phd/UAM17d281a2cb0245328c14a2798512b4d7/
URN
urn:amu-prod:UAM17d281a2cb0245328c14a2798512b4d7

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