Changes in composition and structure of breeding bird communities due to successive changes in ecosystems
| dc.contributor.author | Karaivanov, Nikolay P. | |
| dc.date.accessioned | 2024-05-29T18:12:28Z | |
| dc.date.available | 2024-05-29T18:12:28Z | |
| dc.date.issued | 2015-09-15 | |
| dc.description.abstract | Successive changes in ecosystems are due to natural and/or anthropogenic influences. These changes influence species richness and structure of phyto- and zoocenoses. Birds represent a good indicator for changes of habitats type. Four types of habitats were closely examined. Those habitats were low-grass stone steppe, high-grass steppe, steppe with presence of single shrubs, open areas with prevalence of Jeruselem thorn and low-grown trees and low forests. Species richness increases with the rising of both grass stature and thickness of shrubs. In the low-grass steppe ecosystems only 8 breeding species are present, whereas in low forests - 31. Highest density was observed in the open areas with shrubs – approximately 43 p/10ha, whereas in the low-stemmed forests it decreases to 14.66 p/ha. The percentage of dominant species decreases and those of satellite species increases from 3 in steppes to 25 in woods. The value of Sorensen’s similarity coefficients (over 70%) shows high similarity between species richness of low-grass steppe and high-grass steppe. Similarity between open areas and low-grown woods is over 60%. | |
| dc.identifier.issn | 1314-6246 | |
| dc.identifier.uri | https://doi.uni-plovdiv.bg/handle/store/144 | |
| dc.language.iso | en | |
| dc.publisher | Plovdiv University Press “Paisii Hilendarski” | |
| dc.subject | birds | |
| dc.subject | breeding communities | |
| dc.subject | Dobrudzha | |
| dc.subject | dominant species | |
| dc.subject | density | |
| dc.subject | successive changes | |
| dc.title | Changes in composition and structure of breeding bird communities due to successive changes in ecosystems | |
| dc.type | Article |