Perinčių paukščių bendrijų rūšinė sudėtis ir vietos populiacijų gausumo dinamika Lietuvoje
As the breeding bird communities and population numbers have not been widely studied in Lithuania, there is not much local literature on the subject. Traditionaly for decades more attention was given to the migrating birds in Lithuania. From 1995 the Lithuanian Ornithological Society have been syste...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Master Thesis |
| Language: | Lithuanian |
| Published: |
2005
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/20.500.12259/116119 |
| Summary: | As the breeding bird communities and population numbers have not been widely studied in Lithuania, there is not much local literature on the subject. Traditionaly for decades more attention was given to the migrating birds in Lithuania. From 1995 the Lithuanian Ornithological Society have been systematically making bird breeding population survey when usung point count methodology. This was the first attempt to computer and analyze the data of the point count studies made by the Lithuanian Ornithological Society in 1996-2004. During the point count survey 158 species of birds were recorded. Among them the Passeriformes species predominate. Our observations shows that Fringilla coelebs, Erithacus rubecula predominantes in the forested landscapes. Alauda arvensis and Sturnus vulgaris are predominating in bird communities assciations in the agricultural landscape. Numbers of local breeding populations were fluctuating mostly among years but were near stable during the period. Local populations of Anthus trivialis and Carduelis chloris have increased in minimum 20%. At the some time local breeding populations of Carduelis carduelis and Sturnus vulgaris have decreased in minimum 20%. Švietimo akademija Vytauto Didžiojo universitetas |
|---|