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Type of publication: Straipsnis Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or / and Scopus (S1)
Field of Science: Miškotyra / Forestry (A004)
Author(s): Zizas, Rytis;Mozgeris, Gintautas;Baliuckas, Virgilijus;Brazaitis, Gediminas;Belova, Olgirda;Grašytė, Gintarė;Kurlavičius, Petras
Title: The Effect of forest landscape structure on the location and occupancy of capercaillie (Tetrao urogallus L.) leks
Is part of: Baltic Forestry. Girionys : Lithuanian Forest Research Institute et all, 2017, Vol. 23, N 2
Extent: p. 411-422
Date: 2017
Keywords: capercaillie;habitat;lek location;forest landscape;high and low occupancy
Abstract: Until now, forest characteristics of capercaillie habitats received very little attention in the southeastern Baltic region, including Lithuania. To fill the gap of ecological study of capercaillie we started to reveal the macro habitat characteristics in 2008. Seventy-one capercaillie leks were identified in southeastern Lithuania during about a decade ago, and these visited during the lekking seasons. Lek occupancy level and lek centre were identified by seen/heard capercaillies and/or their activity signs. The leks were divided into ones of the high (≥2 males) and low occupancy (attributed of individual males’ leks and abandoned leks). A Geographical Information System technology was used to evaluate the forest landscape in four buffer zones within the radius of 0.25, 0.5, 1.0 and 2.0 km generated around the centres of leks. Random extra points were generated within buffers of 2-5, 5-10 and 10-20 km from each lek centre (same number in total as all leks at all tree buffer zones). In order to reveal the differences between high and low occupancy leks and significant distances, leks were compared at four mentioned radii. In addition, high occupancy leks (n = 41) and low occupancy leks (n = 30) were compared with available landscapes at 1.0 km radius separately. By the results, the proportion of pine stands in high occupancy leks up to 1 km from the lek centre was bigger (p < 0.05) if compared with low occupancy leks. High occupancy leks were located about 500 m further from homesteads (the difference p < 0.0001) and 180 m further (p = 0.09) from the forest edge, if compared with low occupancy leks. Wetland proportions in high occupancy leks at all analysed distances were 2.5-3 times (p < 0.05) higher than those in low occupancy leks. The differences of stand areas of different forest types were found only when comparing the areas located 1 km and 2 km in radii from the lek centre
Affiliation(s): Gamtos tyrimų centras
Lietuvos agrarinių ir miškų mokslų centro filialas Miškų institutas
Vytauto Didžiojo universitetas
Švietimo akademija
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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