Vladimir Vladimirov

Vladimir Vladimirov
Bulgarian Academy of Sciences | BAS · Institute of Biodiversity and Ecosystem Research

PhD

About

130
Publications
56,558
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Introduction
Vladimir Vladimirov currently works at the Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences. Vladimir does research in Botany and Systematics (Taxonomy). Their current project is 'Atlas Florae Europaeae'.

Publications

Publications (130)
Article
Full-text available
New data about the distribution and population size, as well as a discussion of the alien and invasive status are provided for two Compositae species in the Bulgarian flora: Dittrichia viscosa and Silphium perfoliatum. The former is a Mediterranean species that was first recorded in Bulgaria in 1931 and never seen again until recently. Due to this,...
Article
Full-text available
New floristic records for the Bulgarian flora.
Article
Pilosella lactucella has been recorded for the first time for the Bulgarian flora. It grows in damp to wet subalpine meadows in the Rila Mts, at ca. 2250 m. A single population of about a thousand specimens has been observed, occupying an area of less than 0.5 ha. The recorded site is the south-easternmost locality of the species in Europe and is r...
Poster
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Modeling of the potential distribution ranges of the invasive alien species Heracleum sosnowskyi and Heracleum mantegazzianum in Eastern Europe
Poster
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Heracleum sosnowskyi (Apiaceae) is native to the eastern main Caucasian ridge and to southwestern and eastern Transcaucasia. It has been deliberately or accidentally introduced in some European countries where, in most cases, the species became invasive. Plants contain photosensitizing furanocoumarins that can burn human skin. Moreover, the species...
Article
During field work in Rila Mts in 2019, in search of suitable summits to study the effects of climate change on alpine plant diversity, an unexpected taxon was recorded. It belongs to Hieracium piliferum agg. from H. sect. Barbata, and it is the first taxon of this section to be recorded in the Bulgarian flora. This locality is rather isolated and r...
Article
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New chorological data are presented for 92 species and subspecies from Bulgaria (26-28, 30-40, 75-76, 88), Greece (10-24, 29, 41-74, 77-87, 89-91), and Turkey-in-Europe (1-9, 25). The taxa belong to the following families: Violaceae (85). New taxa for science are: Anthemis rigida subsp. amorgina (23); Cephalaria flava subsp. askiensis (82). New tax...
Poster
Full-text available
COLE TCH , HILGER HH, STEVENS PF, VLADIMIROV V, STOYANOV S (2021) ФИЛОГЕНИЯ НА ПОКРИТОСЕМЕННИТЕ, Систематика на Покритосеменните (Цветните) растения. Българска версия на: COLE TCH, HILGER HH, STEVENS PF (2020) Angiosperm Phylogeny Poster – Flowering Plant Systematics ● Хипотетично филогенетично дърво, основано на молекулярните филогенетични данни (...
Article
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Alibotush Reserve is located in Slavyanka Mountain, Southwestern Bulgaria, near the state border with Greece. It was established as protected area in 1951 and currently covers 1638.12 ha, which is about 25% of the Bulgarian territory of the mountain. It has the strictest protection regime according to Bulgaria’s national legislation and corresponds...
Article
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The Atlas presents the results of karyological studies of vascular plants in Bulgaria and covers 53.4 % of all species distributed in the country which belong to 63.5 % of the families and 62.6 % of the genera in the Bulgarian vascular flora (Pteridophytes: 49.2 % of the species have been studied which belong to 42.1 % of the families and 44.4 % of...
Article
The newly described Pilosella bulgarica combines the morphological features of P. pavichii and P. rhodopea, and grows in the subalpine habitats in the Kurudere gorge in the Triglav massif, Central Stara Planina Mountains, Bulgaria. It is illustrated with photos of the holotype (kept at SOM) and living plants in the locus classicus.
Article
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Elodea nuttallii (Hydrocharitaceae) is an aquatic plant, native to North America. In Bulgaria, the species was recorded as a naturalised alien relatively recently – in 2002. Since then, the number of the recorded localities has increased rapidly. In Europe, the species has been considered to have high ecological impact in the invaded areas, and the...
Article
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Regulation (EU) No 1143/2014 of the European Parliament and of the Council of 22 October 2014 on the prevention and management of the introduction and spread of invasive alien species, Article 24(1), obliges the EU Member States to report by 1st June 2019, and every six years thereafter, the distribution of the invasive alien species of Union or re...
Article
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New chorological data are presented for 158 species and subspecies from Albania (129), Bulgaria (73, 85-86, 94-113, 130-149), Greece (6-72, 74-84, 87-93, 114-128, 150-158), and Turkey-in-Europe (1-5). The taxa belong to the following families: Agavaceae (38), Aizoaceae (6), Alliaceae (39, 81, 124), Amaranthaceae (7), Amaryllidaceae (82), Araceae (8...
Article
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The aim of the paper is to report data about the distribution, habitat preferences and naturalisation success of three ornamental taxa cultivated in Bulgaria. Hemerocallis fulva (Asphodelaceae), a native species to temperate Asia, has been recorded as an established alien in eight floristic regions in the country. Oxalis articulata (Oxalidaceae), n...
Article
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The genus Heracleum (Apiaceae) is represented by four native species in the Bulgarian flora. In 2017, an alien species, H. sosnowskyi, was reported for the first time for Bulgaria in Acta Zoologica Bulgarica, Suppl. 9: 47-51, 2017. However, further studies have revealed that the species was misidentified and the reported plants from Sofia City in f...
Article
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"Torfeno Branishte" is a Reserve located in "Vitosha" Natural Park, Bulgaria. It was established in 1935 to preserve the peat communities in the high parts of Vitosha Mountain in their natural state. The reserve comprises Bulgaria’s most significant complex of high mountain peatlands. Their age is estimated to be over 1500 years old, and the thickn...
Article
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Bidens frondosus L. (Asteraceae), a species native to North America, is reported for the first time as an alien species for the flora of the Republic of North Macedonia. It was recorded on the shore of Prespa lake, E-SE of Stenje village. Morphological description, mainly based on the material collected from this locality, and key for identification o...
Article
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Three alien species of Opuntia (Cactaceae) have been studied in a locality in Mt Lozenska, Mt Sredna Gora (Western) floristic region in Bulgaria. One of the species-O. humifusa, has already been reported for the area, whereas the other two species-O. engelmannii and O. fragilis are reported here for the first time for the Bulgarian flora. Most like...
Article
Hieracium kritschimanum is neotypified with specimens collected in the type locality in Bulgaria. The etymology and original spelling of the species epithet of H. kritschimanum are clarified. Hieracium pangaeum, which combines the morphological features of H. petrovae and H. olympicum, is described from northern Greece. Both species are illustrated...
Article
Hieracium kritschimanum is neotypified with specimens collected in the type locality in Bulgaria. The etymology and original spelling of the species epithet of H. kritschimanum are clarified. Hieracium pangaeum, which combines the morphological features of H. petrovae and H. olympicum, is described from northern Greece. Both species are illustrated...
Article
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The aim of the article is to report the presently known localities of Rosa rugosa (Rosaceae) in the Bulgarian flora, and to discuss its alien and invasive status. The species is native to East Asia and has been introduced in Europe, North America and New Zealand where it became established and, in some parts, invasive. In Bulgaria, the taxon was in...
Article
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The genus Hieracium is notorious for its taxonomic complexity due to its specific reproductive system involving normal sexual reproduction, hybridization, polyploidy, and apomixis. It is one of the largest genera worldwide and in the Bulgarian flora. So far, no alien Hieracium species has been reported for Bulgaria. However, fieldwork in the Rila M...
Article
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New chorological data are presented for 401 species and subspecies from Bulgaria (15-18, 130-148, 184-205, 390-392, 398-401), Greece (1-3, 19-129, 149-183, 206-389, 393-397), and Turkey-in-Europe (4-14). The taxa belong to the following families: Acanthaceae (149), Aceraceae (55, 242), Aizoaceae (150), Alliaceae (17, 46, 47, 120, 378, 379), Amarant...
Article
Full-text available
The species-mixed Pilosella populations comprising diploid sexual and polyploid facultatively apomictic biotypes were studied in Bulgaria. Parentage of co-occurring recent hybrids was inferred from a combination of morphology and ploidy level that corresponded to simple/multiple crosses of basic species via either reduced or unreduced gametes. The...
Article
Full-text available
The aim of the article is to report the presently known localities of Rosa rugosa (Rosaceae) in the Bulgarian flora, and to discuss its alien and invasive status. The species is native to East Asia and has been introduced in Europe, North America and New Zealand where it became established and, in some parts, invasive. In Bulgaria, the taxon was in...
Conference Paper
Full-text available
Effective policy making and management relies on a solid knowledge base, which largely depends on the availability and quality of underpinning data and the tools needed to share it between scientists, decision makers and managers. This is particu‑larly true for the invasive alien species (IAS). The East and South European Network for Invasive Alie...
Article
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New chorological data are presented for 180 species and subspecies from Bulgaria (103-119, 150-155), Greece (11-102, 120-149, 156-180), and Turkey-in-Europe (1-10). The taxa belong to the following families: Adiantaceae (103), Alismataceae (144), Apiaceae (29, 108, 126, 156-159), Araceae (20, 96), Araliaceae (30), Asparagaceae (117), Asteraceae (11...
Article
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An overview of floristic and taxonomic research on vascular plants in Bulgaria during the period of 2005-2016 has been made. The Bulgarian flora currently comprises 4064 species, belonging to 921 genera and 159 families. About 490 published papers were checked, in which 127 species were reported for the first time for the country by Bulgarian or fo...
Article
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The Maritime pine Pinus pinaster is a fast growing tree, well adapted to sandy soils. It is native to the Western Mediterranean. The wood is used for construction works and furniture. Also, it is used for production of turpentine and rosin. Therefore, it was planted widely for timber production, reforestation of degraded soils and dune stabilisatio...
Article
An important step in managing invasive species is determining the factors responsible for their current and potential distribution, especially when species distribution is climatically determined like in Reynoutria taxa case. The main aim of this paper was to integrate all available distribution data of the Reynoutria taxa in SE Europe and to predi...
Article
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An embryological study of two invasive alien species in Bulgaria – Solidago canadensis and Solidago gigantea (Asteraceae) was carried out. Both taxa are native to North America. The features of the reproductive structures and processes were examined in order to estimate which traits may facilitate the invasiveness of these species. We found that se...
Article
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Cirsium palustre (Asteraceae) is reported for the first time for the Bulgarian flora. The species was discovered in two adjacent localities in Znepole floristic region near Bohova village, close to the Bulgarian-Serbian Border. Worldwide, it is distributed in Europe and West Siberia. The nearest known localities of the species are on the territory...
Article
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New chorological data are presented for 246 species and subspecies from A new species for science is: Genista willingii (192). New species for the countries are: Albania-Oenothera speciosa (125); Bulgaria-Stachys byzantina (243); Macedonia-Bidens subalternans (198). The publication includes contributions by: A.
Article
Full-text available
New chorological data are presented for 246 species and subspecies from A new species for science is: Genista willingii (192). New species for the countries are: Albania-Oenothera speciosa (125); Bulgaria-Stachys byzantina (243); Macedonia-Bidens subalternans (198). The publication includes contributions by: A.
Book
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Photo Atlas of Sparsely Vegetated Ecosystems in Bulgaria aims at presenting in photographs a variety of dune, rock and scree habitats along the Black Sea coast, as well as in the foremountain and mountain territories of Bulgaria. The characteristic plant, fungi and animal species of these habitats are an important element of the biological diversit...
Book
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This book is intended to make the reader familiar with the methodology for mapping and assessment of sparsely vegetated land ecosystem condition and services in Bulgaria, as well as to provide information on the obtained results. It comprises rich illustrative material, maps and information about the different habitats relating to the sparsely vege...
Article
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Common ragweed (Ambrosia artemisiifolia) is one of the worst invasive alien species in Europe with a strong negative impact on human health and agriculture. Therefore, search for effective methods for its control is crucial. The aim of this study was to test the suppressive potential of some perennial grasses on the growth and seed production of A....
Poster
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From the foresters point of view, the best results of the introduction and productivity of Maritime pine in Bulgaria have been obtained on sandy soils, close to the sea coast. All the reported cases of establishment of the species are on sandy dune habitats, with a high conservation status, especially the priority habitat type 2130* (listed in Dire...
Article
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Clematis tibetana (Ranunculaceae) has been recently reported as an alien species to the Bulgarian ora. A single small population comprising seven specimens has been recorded in the Black Sea Coast oristic region near Razdelna village, Varna district. Conducting molecular investigation on this alien plant is useful for understanding its ecological a...
Research
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The digital edition is part of a joint project for a print and digital edition of the Red Data Book of the Republic of Bulgaria. It includes the full information from the print edition (vol 1 Plants and Fungi, vol 2 Animals, vol 3 Natural habitats), enriched with videos, extended photo gallery, higher-resolution drawings, distribution maps with rel...
Article
Full-text available
Chromosome numbers and breeding systems are given for a set of Pilosella species occurring in Bulgaria and SW Romania (Banat). All diploids and tetraploid accessions of P. bauhini and P. cymosa subsp. sabina were found sexual, and tetraploid P. pavichii both sexual and apomictic. One hexaploid accession of P. bauhini was found sexual, but semisteri...
Article
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An embryological study of Brassica jordanoffii was carried out. The anther is tetrasporangiate and its wall of Monocotyledonous-type development consists of: epidermis, endothecium, one middle layer and glandular tapetum. Predominantly tetrahedral microspore tetrads form after simultaneous microsporogenesis. The mature pollen grains are three-celle...
Article
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First report of Erigeron sumatrensis (Asteraceae) for the flora of the Republic of Macedonia Abstract Vladimirov, V., Matevski, V., Bancheva, S., Delcheva, M., Kostadinovski, M. & Ćušterevska, R.: First report of Erigeron sumatrensis (Asteraceae) for the flora of the Republic of Macedonia. — Fl. Medit. 26: 203-207. 2016. — ISSN: 1120-4052 printed,...
Article
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First record of the alien Diplachne fascicularis (Poaceae) in Bulgaria Abstract Vladimirov, V. & Delcheva, M.: First record of the alien Diplachne fascicularis (Poaceae) in Bulgaria. — Fl. Medit. 26: 209-214. 2016. — ISSN: 1120-4052 printed, 2240-4538 online. Diplachne fascicularis (Poaceae), a taxon native to North and South America, is reported f...
Conference Paper
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Question and Methods: Many important pest species have alien origin and their introductions and expansions have been increasing due to human activities and global change. Invasive alien species (IAS) threaten not only biodiversity and unmanaged areas but also socio-economy and managed areas. Most of alien species are not covered by the plant and an...
Article
Full-text available
Main features of the male and female generative sphere of Ambrosia arte-misiifolia and Iva xanthiifolia – two invasive species in the Bulgarian flora, belonging to the family Asteraceae, were established during the study, namely: tetrasporangiate anthers; four-layered anther wall that develops according to Dicotyledonous-type and comprises epidermi...
Article
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A new alien species – Lepidium virginicum (Brassicaceae), is reported for the Bulgarian flora. The species was first collected in July 2014 at a railway station in Ruse town, Northeast Bulgaria floristic region. The article provides brief morphological description of the species based on the material gathered in Bulgaria, main distinguishing charac...