Effect of Alkaline Deposition on the Mites (Acari) associated with Young Scots Pine Forests in Poland |
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Authors: | Senickzak Stanisław Dąbrowski Janusz Klimek Andrzej Kaczmarek Sławomir |
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Affiliation: | 1. Department of Ecology, University of Technology and Agriculture, Ks, Kordeckiego str. 20, PL-85225, Bydgoszcz, Poland 2. Department of Biology and Environmental Protection, Pedagogical University, Chodkiewicza, str. 51, PL-85667, Bydgoszcz, Poland
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Abstract: | The effect of alkaline deposition produced by the ‘Kujawy’ cement and lime factory in Bielawy, Poland, on the mites in young Scots pine forests (plants class Vaccinio-Piceetea) was investigated. The concentration of calcium in tree bark and epiphytes, which provide a habitat for mites, as well as in soil was the lowest in the control plot, and increased in the direction of the factory. A high concentration of calcium correlated with an absence of lichens from tree bark, but a medium concentration was associated with a higher species number of lichens. The density of arboreal mites and the species number of Oribatida were the highest in the control plot and decreased when getting closer to the factory. In a highly contaminated plot, the density of soil mites was lower, while in a medium contaminated plot it was higher than in the control plot. In the contaminated plots, the species number of soil Oribatida and Gamasida was lower than in the control plot, except in a least contaminated plot where the number of gamasid species was higher than in the control plot. Some species were sensitive to calcium, others were sensitive to a high concentration but tolerated medium and small concentrations of this element, and yet others tolerated calcium. The arboreal mites reacted to alkaline deposition more distinctly than soil mites. |
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