Vladimir Vladimirov | Laboratoire d’excellence HASTEC (Histoire et anthropologie des savoirs, des techniques et des croyances) (original) (raw)

Papers by Vladimir Vladimirov

Research paper thumbnail of On the embryology of Brassica jordanoffii (Brassicaceae) – an endemic species in the Bulgarian flora

Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, 2016

An embryological study of Brassica jordanoffii was carried out. The anther is tetrasporangiate an... more 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-celled. The mature ovule is ana-amphytropous, crassinucellate, bitegmic with unicellular archesporium that functions as a megaspore mother cell after cutting off one or two parietal cells. Development of the embryo sac is of the Polygonum type. The embryo and endosperm develop after Onagrad-type embryogenesis. A relatively high pollen and embryo viability was estimated.

Research paper thumbnail of Distribution of Elodea nuttallii, an invasive alien species of EU concern, in Bulgaria

Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, 2019

Elodea nuttallii (Hydrocharitaceae) is an aquatic plant, native to North America. In Bulgaria, th... more 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 therefore, it is included in the List of invasive alien species of EU concern under 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) of the same Regulation 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 regional concern. Therefore, the reporting of all known localities of Elodea nuttallii in Bulgaria is urgently needed. The article presents the currently known distribution of the species, includi...

Research paper thumbnail of Medicinal plants in Bulgaria: diversity, legislation, conservation and trade

Biodiversity of the medicinal plants in Bulgaria is assessed. The legislative acts dealing with t... more Biodiversity of the medicinal plants in Bulgaria is assessed. The legislative acts dealing with their protection and management are examined. The factors and conditions influencing the extent of their usage are analyzed. Data are presented on the export of medicinal plants during the last years. The trends, measures and approaches determined by the economic conditions in the country are outlined. Collaboration on national and international scale is shown, as well as the role of the scientific and administrative institutions in the process of management and conservation of the genetic and the biological potential of medicinal plants.

Research paper thumbnail of The alien species of Heracleum (Apiaceae) in the Bulgarian flora revisited

The genus Heracleum (Apiaceae) is represented by four native species in the Bulgarian flora. In 2... more 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 fact belong to H. mantegazzianum. In summer 2018, both H. sosnowskyi and H. mantegazzianum were found in the Rhodope Mts. The population of the former species comprised a few thousand specimens spread in grasslands, arable land and along three confluent local rivers, whereas the latter species was represented by only a few specimens. The specimens of both alien species outgrew any of the native herbaceous plants and reached a height of over three meters. The article presents the currently known distribution of the two species in the Bulgarian flora and the main distinguishing characters between H. mantegazzianum, H. sosnowskyi and the nativ...

Research paper thumbnail of Pilosella bulgarica (Asteraceae) a new hybridogenous species from Bulgaria

Phytotaxa

The newly described Pilosella bulgarica combines the morphological features of P. pavichii and P.... more 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.

Research paper thumbnail of IAPT/IOPB chromosome data 12

TAXON

TAXON 60 (6) • December 2011: E1-E72 Marhold (ed.) • IAPT/IOPB chromosome data 12 Previously, dip... more TAXON 60 (6) • December 2011: E1-E72 Marhold (ed.) • IAPT/IOPB chromosome data 12 Previously, diploid cytotype of 2n = 18 was reported for this species by Kaul & Bakshi (1984).

Research paper thumbnail of Reynoutria niche modelling and protected area prioritization for restoration and protection from invasion: A Southeastern Europe case study

Journal for Nature Conservation

Research paper thumbnail of New floristic records in the Balkans: 16*

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2011

Research paper thumbnail of Lactuca visianii Bornm., Asperula hercegovina Degen - In: Vladimirov, V. et al. (eds.): New floristic records in the Balkans 2. Reports 72–73

The following records are all new to the island of Samothraki (N Aegean islands) and when specifi... more The following records are all new to the island of Samothraki (N Aegean islands) and when specifically stated, to the floristic region of N Aegean (NAe) as circumscribed in Flora Hellenica (Strid & Tan 1997). Apiaceae 1. Anthriscus caucalis M. Bieb. Gr Samothraki: SW of Kamariotissa, road margins in harbour area, 3 m, 40°28′40″ N, 25°28′20″ E, 03.11.2005, Biel 06.201. Another locality was found E of Profitis Ilias village. Asteraceae 2. Bellis sylvestris M. Bieb. Gr Samothraki: SE of Kamariotissa, road margins in harbour area, 3 m, 40°28′44″ N, 25°29′36″ E, 24.10.2002, Biel 02.142. Three other localities were found near Kamariotissa and Ano Meria. New for the N Aegean islands. Brassicaceae 3. Calepina irregularis (Asso.) Thell. Gr Samothraki: N of Therma village, oak scrub, on porphyritic or basalt substrate, 30 m, 40°29′53″ N, 25°36′26″ E, 05.04.2006, Biel 06.122. Other localities are within Therma and near Profitis Ilias village. 4. Malcolmia maritima (L.) R. Br. Gr Samothraki: SW of Kamariotissa, at edge of flat coastal lagoon, on sand and loamy ground, 2 m, 40°27′26″ N, 25°27′38″ E, 09.05.2001, Biel 01.089. New for the N Aegean islands. 5. Th laspi perfoliatum L. Gr Samothraki: SE of Chora (Samothraki), edge of dirt track near chapel of Ag. Georgios, on basalt and schist, 300 m, 40°27′46″ N, 25°31′53″ E, 03.04.2006, Biel 06.088. Other localities exist near Profitis Ilias village (08.04.2006, Biel 06.218) and north of Pachia Ammos.

Research paper thumbnail of Chromosome numbers and taxonomic-chorological notes on selected species of Hieracium s. str.(Asteraceae) from Montenegro

The chromosome numbers for 15 species of Hieracium s.str. from Durmitor Mt (Montenegro) are repor... more The chromosome numbers for 15 species of Hieracium s.str. from Durmitor Mt (Montenegro) are reported, supplied by taxonomic and chorological notes. Eleven taxa (H.

Research paper thumbnail of New floristic records in the Balkans: 17

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2011

Research paper thumbnail of New floristic records in the Balkans: 14

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2010

... Dimitar S. Dimitrov National Natural History Museum, Bulgarian Academy of Sciences, 1 Tsar Os... more ... Dimitar S. Dimitrov National Natural History Museum, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd., 1000 Sofia, Bulgaria, e-mail ... Eastern), Valley of River Struma, Rila Mts, Rhodopi Mts, Thracian Lowland, Tundzha Hilly Country, and Mt Strandzha (Kozhuharov 1992 ...

Research paper thumbnail of New records of Sorbus ×latifolia (Rosaceae) from the Balkan Peninsula and SW Asia

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2013

Research paper thumbnail of On the Reproductive Biology of the Invasive Alien Species Erigeron Annuus (Asteraceae) in the Bulgarian Flora

Comptes Rendus De L Academie Bulgare Des Sciencescomptes Rendus De L Academie Bulgare Des Sciences, 2012

Research paper thumbnail of New floristic records in the Balkans: 5*

New chorological data and remarks for some vascular plants in Bulgaria are presented below.

Research paper thumbnail of New floristic records in the Balkans: 22

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2013

Research paper thumbnail of New floristic records in the Balkans: 18*

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2012

This is the eighteenth report in a series dealing with the new chorological data on vascular plan... more This is the eighteenth report in a series dealing with the new chorological data on vascular plants in the Balkans. For details on the presentation of information see

Research paper thumbnail of New floristic records in the Balkans: 19

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2012

Research paper thumbnail of New floristic records in the Balkans: 24

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2014

Research paper thumbnail of Chromosome numbers of selected species from the Bulgarian flora

Research paper thumbnail of On the embryology of Brassica jordanoffii (Brassicaceae) – an endemic species in the Bulgarian flora

Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, 2016

An embryological study of Brassica jordanoffii was carried out. The anther is tetrasporangiate an... more 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-celled. The mature ovule is ana-amphytropous, crassinucellate, bitegmic with unicellular archesporium that functions as a megaspore mother cell after cutting off one or two parietal cells. Development of the embryo sac is of the Polygonum type. The embryo and endosperm develop after Onagrad-type embryogenesis. A relatively high pollen and embryo viability was estimated.

Research paper thumbnail of Distribution of Elodea nuttallii, an invasive alien species of EU concern, in Bulgaria

Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, 2019

Elodea nuttallii (Hydrocharitaceae) is an aquatic plant, native to North America. In Bulgaria, th... more 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 therefore, it is included in the List of invasive alien species of EU concern under 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) of the same Regulation 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 regional concern. Therefore, the reporting of all known localities of Elodea nuttallii in Bulgaria is urgently needed. The article presents the currently known distribution of the species, includi...

Research paper thumbnail of Medicinal plants in Bulgaria: diversity, legislation, conservation and trade

Biodiversity of the medicinal plants in Bulgaria is assessed. The legislative acts dealing with t... more Biodiversity of the medicinal plants in Bulgaria is assessed. The legislative acts dealing with their protection and management are examined. The factors and conditions influencing the extent of their usage are analyzed. Data are presented on the export of medicinal plants during the last years. The trends, measures and approaches determined by the economic conditions in the country are outlined. Collaboration on national and international scale is shown, as well as the role of the scientific and administrative institutions in the process of management and conservation of the genetic and the biological potential of medicinal plants.

Research paper thumbnail of The alien species of Heracleum (Apiaceae) in the Bulgarian flora revisited

The genus Heracleum (Apiaceae) is represented by four native species in the Bulgarian flora. In 2... more 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 fact belong to H. mantegazzianum. In summer 2018, both H. sosnowskyi and H. mantegazzianum were found in the Rhodope Mts. The population of the former species comprised a few thousand specimens spread in grasslands, arable land and along three confluent local rivers, whereas the latter species was represented by only a few specimens. The specimens of both alien species outgrew any of the native herbaceous plants and reached a height of over three meters. The article presents the currently known distribution of the two species in the Bulgarian flora and the main distinguishing characters between H. mantegazzianum, H. sosnowskyi and the nativ...

Research paper thumbnail of Pilosella bulgarica (Asteraceae) a new hybridogenous species from Bulgaria

Phytotaxa

The newly described Pilosella bulgarica combines the morphological features of P. pavichii and P.... more 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.

Research paper thumbnail of IAPT/IOPB chromosome data 12

TAXON

TAXON 60 (6) • December 2011: E1-E72 Marhold (ed.) • IAPT/IOPB chromosome data 12 Previously, dip... more TAXON 60 (6) • December 2011: E1-E72 Marhold (ed.) • IAPT/IOPB chromosome data 12 Previously, diploid cytotype of 2n = 18 was reported for this species by Kaul & Bakshi (1984).

Research paper thumbnail of Reynoutria niche modelling and protected area prioritization for restoration and protection from invasion: A Southeastern Europe case study

Journal for Nature Conservation

Research paper thumbnail of New floristic records in the Balkans: 16*

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2011

Research paper thumbnail of Lactuca visianii Bornm., Asperula hercegovina Degen - In: Vladimirov, V. et al. (eds.): New floristic records in the Balkans 2. Reports 72–73

The following records are all new to the island of Samothraki (N Aegean islands) and when specifi... more The following records are all new to the island of Samothraki (N Aegean islands) and when specifically stated, to the floristic region of N Aegean (NAe) as circumscribed in Flora Hellenica (Strid & Tan 1997). Apiaceae 1. Anthriscus caucalis M. Bieb. Gr Samothraki: SW of Kamariotissa, road margins in harbour area, 3 m, 40°28′40″ N, 25°28′20″ E, 03.11.2005, Biel 06.201. Another locality was found E of Profitis Ilias village. Asteraceae 2. Bellis sylvestris M. Bieb. Gr Samothraki: SE of Kamariotissa, road margins in harbour area, 3 m, 40°28′44″ N, 25°29′36″ E, 24.10.2002, Biel 02.142. Three other localities were found near Kamariotissa and Ano Meria. New for the N Aegean islands. Brassicaceae 3. Calepina irregularis (Asso.) Thell. Gr Samothraki: N of Therma village, oak scrub, on porphyritic or basalt substrate, 30 m, 40°29′53″ N, 25°36′26″ E, 05.04.2006, Biel 06.122. Other localities are within Therma and near Profitis Ilias village. 4. Malcolmia maritima (L.) R. Br. Gr Samothraki: SW of Kamariotissa, at edge of flat coastal lagoon, on sand and loamy ground, 2 m, 40°27′26″ N, 25°27′38″ E, 09.05.2001, Biel 01.089. New for the N Aegean islands. 5. Th laspi perfoliatum L. Gr Samothraki: SE of Chora (Samothraki), edge of dirt track near chapel of Ag. Georgios, on basalt and schist, 300 m, 40°27′46″ N, 25°31′53″ E, 03.04.2006, Biel 06.088. Other localities exist near Profitis Ilias village (08.04.2006, Biel 06.218) and north of Pachia Ammos.

Research paper thumbnail of Chromosome numbers and taxonomic-chorological notes on selected species of Hieracium s. str.(Asteraceae) from Montenegro

The chromosome numbers for 15 species of Hieracium s.str. from Durmitor Mt (Montenegro) are repor... more The chromosome numbers for 15 species of Hieracium s.str. from Durmitor Mt (Montenegro) are reported, supplied by taxonomic and chorological notes. Eleven taxa (H.

Research paper thumbnail of New floristic records in the Balkans: 17

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2011

Research paper thumbnail of New floristic records in the Balkans: 14

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2010

... Dimitar S. Dimitrov National Natural History Museum, Bulgarian Academy of Sciences, 1 Tsar Os... more ... Dimitar S. Dimitrov National Natural History Museum, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd., 1000 Sofia, Bulgaria, e-mail ... Eastern), Valley of River Struma, Rila Mts, Rhodopi Mts, Thracian Lowland, Tundzha Hilly Country, and Mt Strandzha (Kozhuharov 1992 ...

Research paper thumbnail of New records of Sorbus ×latifolia (Rosaceae) from the Balkan Peninsula and SW Asia

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2013

Research paper thumbnail of On the Reproductive Biology of the Invasive Alien Species Erigeron Annuus (Asteraceae) in the Bulgarian Flora

Comptes Rendus De L Academie Bulgare Des Sciencescomptes Rendus De L Academie Bulgare Des Sciences, 2012

Research paper thumbnail of New floristic records in the Balkans: 5*

New chorological data and remarks for some vascular plants in Bulgaria are presented below.

Research paper thumbnail of New floristic records in the Balkans: 22

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2013

Research paper thumbnail of New floristic records in the Balkans: 18*

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2012

This is the eighteenth report in a series dealing with the new chorological data on vascular plan... more This is the eighteenth report in a series dealing with the new chorological data on vascular plants in the Balkans. For details on the presentation of information see

Research paper thumbnail of New floristic records in the Balkans: 19

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2012

Research paper thumbnail of New floristic records in the Balkans: 24

Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2014

Research paper thumbnail of Chromosome numbers of selected species from the Bulgarian flora