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Key to the native and foreign vascular plants in Bulgaria



The book contains determination keys for the vascular plants (wild and cultivated) in Bulgaria and the neighboring territories of Romania, Serbia, North Macedonia, Greece, and Turkey. The determination tables contain 6963 species (native and foreign) in 1322 genera from 310 families. (in Bulgarian)
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... The nomenclature and the native status of the registered vascular plants followed Euro + Med PlantBase [45]. The native status of the species not marked in Euro + Med PlantBase as distributed in Bulgaria (i.e., Allium rotundum, Brassica napus, Euphorbia cyparissias, Leontodon crispus, Leucanthemum vulgare, Vicia narbonensis) was defined according to national literature sources [46,47]. Bryophyte nomenclature followed Hill et al. [48]. ...
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As a distinctive component of the cultural landscape in Eurasia, burial mounds are well known for their historical value. Recently their role as biodiversity hotspots, especially in the homogenous agricultural landscape, has become particularly important. Archaeological excavations, although necessary, are destructive to the natural elements on the mounds. Restoration and vegetation recovery after such disturbances are needed for the preservation of biodiversity and for the cultural landscape integrity. In this study, we aimed to find out how effective is the natural vegetation recovery on the mounds after archaeological excavations. Successional stages between 2- and 30-years post-excavations have been studied. Vegetation sampling was performed on 15 mounds within 300 plots (1 × 1 m). Spontaneous succession was found to start immediately, and during the first decade, anthropophytes prevailed. In the subsequent years, their cover significantly decreased at the expense of species typical for the natural communities in the surroundings. Total species richness increased with the successional age and the vegetation composition became more similar to the semi-natural communities commonly established on mounds in Bulgaria. In the advanced successional stages, we registered a high rate of heterogeneity on the mounds, facilitated by the establishment of target plant species with different ecological requirements, including bryophytes. Provided the obtained results, we conclude that the natural vegetation recovery on the excavated and subsequently recovered mounds were very successful, and the current practice must continue in the future.
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