@article {1803,
	title = {Classification of Ant Assemblages (Hymenoptera: Formicidae) in Green Areas of Sofia},
	journal = {Acta Zoologica Bulgarica},
	volume = {60, Suppl. 2},
	year = {2008},
	pages = {103-110},
	abstract = {<p>The myrmecofauna of the green areas in Sofia City was extensively sampled by qualitative and quantitative methods to assess spatial variation in species composition of ant assemblages. The cluster analysis of the assemblages based on presence/absence data resulted in grouping into two main clusters: woody and open habitats. The assemblages of the open areas further divided into two groups: grassy habitats and artificial biotopes (asphalt coverings and agricultural land). Most of the assemblages in open areas clearly demonstrated the impact of urbanization by grouping into three main zones depending on the distance from the city centre: central, peripheral and rural.</p>
},
	keywords = {ants, cluster analyses, communities, urban ecology},
	author = {Antonova, Vera and Penev, Lyubomir}
}
@article {1803,
	title = {Changes in the zoogeographical structure of ants (Hymenoptera: Formicidae) caused by urban pressure in the Sofia region (Bulgaria)},
	journal = {Myrmecological News},
	volume = {8},
	year = {2006},
	pages = {271{\textendash}276},
	abstract = {<p>A comparison of the zoogeographical peculiarities of the myrmecofauna in urban and non-urban habitats in Sofia region is performed. The proportion of the widespread Holarctic species was twice as high in the urban as compared to the non-urban sites. Also Euro-Caucasian elements are well represented in the urban sites. The share of South-Transpalaearctic, Eurasian steppe and Boreo-Montane elements is low or such elements are absent from the urban sites.</p>
},
	keywords = {ants, Bulgaria, Formicidae, urban landscape, zoogeography},
	author = {Antonova, Vera and Penev, Lyubomir}
}
