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The study presents data on some invasive and conservation-significant species in two protected areas of the Strandzha Nature Park - Protected Area "Marina Reka" and Protected Area "Silistar". There were monitored the protected species Pancratium maritimum, Calluna vulgaris, Daphne pontica, Ilex colchica, Rhododendron ponticum, Mespilus germanica, and Taxus baccata, as well as an invasive species - Amorpha fruticosa, whose population borders that of Pancratium maritimum. The projective coverage of species in the sample areas and the total projective coverage of the vegetation have been studied also measures for their protection have been indicated. [ABSTRACT FROM AUTHOR]

Floristic studies have been carried out in the Upper Thracian Lowland in 14 railway stations: Dimitrovgrad, Knizhovnik, Malevo, Maslinovo, Most, Stara Zagora, Yabalkovo, Uzundzhovo, Harmanli, Skobelevo, Karadzhalovo, Stalevo, Plovdiv and Haskovo during the period 2017 to 2019. A total of 267 species, 174 genera and 53 families of higher vascular plants were identified. Alien and invasive species make up for a relatively high percentage of 9.4% in the railway flora. This indicates that the railway network plays an important role in the penetration and further dispersal of alien species in Bulgarian. The long-distance spread of railway areas is most common with passing trains and people moving. The largest number of alien species were found at stations with more intensive movement of passengers and cargo, where maneuvers are performed, stay of freight trains, such as Dimitrovgrad, Haskovo, Plovdiv, Stara Zagora. The alien species found at several of the studied railway stations were: Convolvulus arvensis L., Erigeron canadensis L., Fallopia convolvulus (L.) Á. Löve, Amaranthus hybridus L., Amorpha fruticosa L. Individual plants of strongly invasive Ambrosia artemisifolia L. have been identified in the railway station in the Haskovo City. [ABSTRACT FROM AUTHOR]

The two-year study on the species composition of higher plants was conducted in three moisture zones in the Maritsa river valley, Bulgaria: "Rice-field Plovdiv", protected zone (PZ) "Rice-field Tsalapitsa" and protected area (PA) "Martvitsata Zlato Pole". The analysis was done, using the floristic methods. There were 154 species of vascular plants identified, which belong to 125 genera and 43 families. The highest floristic diversity was found for PA "Martvitsata Zlato Pole" - 74% of the total number of species found, followed by "Rice-field Plovdiv" (47%) and PZ "Rice-field Tsalapitza" (36%). The families Asteraceae, Poaceae, Fabaceae and Lamiaceae have the largest number of representatives. The total floristic composition of the three tested areas showed the predominance of dicotyledonous taxa. The comparative analysis of the biological types showed the prevalence of the perennial herbaceous plants, followed by the annual plants. [ABSTRACT FROM AUTHOR]

The object of investigation is the region of peak Malusha, Kozyata Reka river and the adjacent territories. The studied area is located in the main watershed ridge of the Shipka divide of Central Balkan Range. Identified are 621 species of vascular plants belonging to 355 genera and 88 families. A description of the floristic composition is made. Attached is the so far compiled list of the identified plant species. A table is offered with the important plant species that occur within the mountain massif. Identified are 23 plant species with international protection status, subject to conservation in the Protected Zone Balgarka BG0000399 and Protected Zone Central Balkan - buffer BG0001493. [ABSTRACT FROM AUTHOR]