Current state and historical notes on sand dune flora of the Bulgarian Black Sea Coast

Valcheva, Magdalena; Sopotlieva, Desislava; Apostolova, Iva

doi:10.1016/j.flora.2020.151594

Cited by 4 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although a relatively small number, the psammophytes we registered represent the core group of characteristic plant species for the Bulgarian coastal dunes. Our previous study on coastal flora showed that these species have remained consistent in sand dune vegetation over time [63]. The cover of psammophytes prevailed in the studied dune habitats and generally in all studied dune locations.…”

Section: Vegetation Characteristicssupporting

confidence: 51%

“…For the purposes of the analyses, we classified all registered vascular plants either as typical coastal psammophytes (species occupying sandy substrates and playing an important role in dune formation), or as non-typical species, which we refer to as nonpsammophytes. The latter were further assigned to one of the following groups according to their main habitat preference and using the approach of Valcheva et al [63]: weeds and ruderals; grass-and shrubland plants; forest plants; alien (including invasive) species (see Supplementary ESM S1). Vascular plants nomenclature was applied according to Euro+Med PlantBase [75].…”

Section: Data Sampling and Processingmentioning

confidence: 99%

“…The natural and anthropogenic-induced processes of sand dune stabilization, accompanied by accumulation of organic matter [60], might create favorable conditions for the penetration of not only alien but also native plant species with different habitat type preferences. Limited numbers of studies deal with this problem [24,[61][62][63], but we consider this issue important because the presence of non-psammophytes might cause changes in the structure and functions of coastal dune ecosystems.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Vegetation Characteristics and Recent Successional Trends of Sand Dune Habitats at the Bulgarian Black Sea Coast

Valcheva

Sopotlieva

Apostolova

et al. 2021

Coasts

Self Cite

View full text Add to dashboard Cite

Coastal dunes are valuable and vulnerable habitats that require scientific exploration and understanding of their natural processes; therefore, the aims of this study were to determine the current vegetation characteristics of dune habitats along the Bulgarian Coast in terms of species richness and cover of typical psammophytes and different non-psammophytic plant groups, and to analyze how they respond to certain environmental drivers. Data were collected from 12 dune systems. The research was focused on embryonic, white and grey dunes. The field work was conducted throughout July and August 2017. The vegetation was sampled at 154 phytosociological plots (5 m × 5 m). To understand how the vegetation responds to different drivers, we tested the correlation of defined species group richness and cover in relation to (1) the soil pH and EC values, (2) the distance from inland to the sea and (3) the range of different categories of land cover in the surrounding area. In order to track temporal vegetation changes, we compared the cover of defined species groups between 2003 and 2017. We registered a total number of 269 vascular plants, 12 bryophytes and 5 lichens. The strongest presence in all dune types, both in species richness and cover, was the group of grass- and shrubland plants. Weeds and ruderal plants had significant coverage in grey dunes, while the richness and cover of forest and alien plants were negligible among the studied dune habitats. The comparison of data between 2003 and 2017 revealed a substantial decline in the cover of psammophytes. We observed a clear pattern regarding the share of species richness of psammophytes and non-psammophytes among different locations. We detected that grey dunes were the most affected by the penetration of non-psammophytes.

show abstract

Section: Vegetation Characteristicssupporting

confidence: 51%

Section: Data Sampling and Processingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Vegetation Characteristics and Recent Successional Trends of Sand Dune Habitats at the Bulgarian Black Sea Coast

Valcheva

Sopotlieva

Apostolova

et al. 2021

Coasts

Self Cite

View full text Add to dashboard Cite

show abstract

“…& Heldr., G. hygrophila Post, G. trichotoma Wender.) is at a peat factory (in Gus-Khrustalny), the other locations are along railway tracks, respectively Seregin (2003) Russia / Penza Region naturalized species in disturbed areas with a possibility to penetrate into semi-natural habitats Vasjukov & Novikova (2017) Russia / Middle Volga Region, Volga Upland example of a plant species occupying transformed habitats; naturalised species along railways Pismarkina & Silaeva (2018), Nikitin (2017) Belarus (around Brest, Mazyr, Vitebsk) as the discussed species Gypsophila paulii, it grows mainly in anthropogenic habitats: on the sides of roads, railways, wastelands, industrial enterprises, coal and slag dumps (a distribution map is presented) Dzhus (2016) Belarus / Homel Region (Chojniki) on the slope of the railway embankments, a rather large population was found on an area of about 500 m 2 (Valev 1966;Petrova 2011;Valcheva et al 2020) and in Romania respectively (Făgăraş et al 2010;Ciocârlan 2011;Doroftei et al 2011). The distribution map of its native range is presented by Rauschert (1977) and Jalas & Suominen (1986).…”

Section: Introductionmentioning

confidence: 99%

A newcomer from the east: naturalisation of Gypsophila perfoliata L. around the city of Miskolc (Northeast Hungary)

Bükk¹,

Takács²,

Koscsó³

2021

TJB

View full text Add to dashboard Cite

Gypsophila perfoliata (Caryophyllaceae) is a rare, only casually occurring species in Central Europe. Its native range spans from western Asian to the coast of the Black Sea. Several adventive occurrences of G. perfoliata were documented in Central Europe, especially in Germany where the naturalisation of the taxon occurred during the first decades of the 20th century. As a rare weed, it is suspected to have been introduced with iron ore from the former Soviet Union via railways (Kryvyi Rih region, now Ukraine). In this paper, we gathered information on the occurrence of G. perfoliata from its adventive range. These data indicate an ongoing and fast spread of the species across Central and Eastern Europe. For instance, prior to this study, G. perfoliata have two occurrence records from Hungary. Six new and recent records from Miskolc town and its surrounding areas are presented in this paper. The studied plant occurs in former industrial areas (steel factory, transshipment yards, external slag heaps) or along transport lines (esp. road verges, railway lines). We also describe 18 phytosociological relevés taken at the location of occurrences. All occurrences were documented on heavily modified anthroposols, where the populations flourish on bare ground (esp. road verges or parking areas) or on ground with admixture of metalliferous slag debris. With the help of available orthophotos the presumed land-use history of the locations has also been reconstructed. Based on data presented here we recommend modifying the species’ adventive status in Hungary from casual to naturalised. Further expansion of the species is expected not only 172 at industrial sites but also at locations where slag material was utilised (e.g. landfill, road and rail construction). Due to its halophyte characteristics the species might expand its range along roads where de-icing salt is used.

show abstract

Spatial distribution of sand dunes along the Bulgarian Black Sea Coast: inventory, UAS mapping and new discoveries

Prodanov,

Dimitrov,

Kotsev

et al. 2023

View full text Add to dashboard Cite

Coastal sand dunes are amongst the world’s most sensitive and dynamic landforms. Unfortunately, during the last thirty years, heavy anthropogenic alterations have been observed, encompassing the greater part of the Bulgarian Black Sea coast (BBSC), which has changed the land-sea interactions significantly. As a consequence, the depositional coast has shrunk to 131 km or 25% of the aggregate Bulgarian Black Sea shoreline length. Although our research reveals that 86% of BBSC dunes are included in the Natura 2000 network of protected sites established under the Habitats Directive (Council Directive 92/43/EEC 1992), they are often heavily modified, subjected to environmental vandalism and destroyed due to mismanagement or lack of accurate information and prevention. These facts were the main reason for carrying out an inventory of the Bulgarian Black Sea coastal dune systems in 2021-2022. Our research aimed to identify all dune systems/sand dunes, update their spatial distribution and classify the observed coastal sand dunes landforms along the BBSC. The article demonstrates a successful methodology for combining unmanned aerial systems (UAS), Structure-from-Motion (SfM) photogrammetry, in situ sediment sampling, video imaging and verification and GNSS-RTK ground control points for coastal mapping. As of June 2022, over 97% of the Bulgarian shoreline has been surveyed with this technique, excluding military areas and national security sites. Based on the acquired data, as of 2021, the shoreline length was estimated to be 518.7 km at a scale 1:5000. The integrated UAS approach includes using Digital surface models (DSM), raster orthophotomosaics (OM) and 3D models, based on SfM photogrammetry to analyse the coastal topography, detect dune forms and update their spatial distribution. Throughout the inventory, 46 beach-dune systems were identified along the BBSC, which were divided into 62 dune sectors. The area of coastal dune systems was estimated at 988.21 ha (0.0089% of Bulgaria) and a total length of 73 km (14% of the shoreline). A comprehensive geomorphological analysis of the relationships between landforms morphology, aeolian and morphodynamic processes, vegetation density and type was the basis for the coastal dune landforms (CDLs) or dune systems to be classified into primary (312 ha; 32%) and secondary (676 ha; 68%). Additionally, the CDLs were classified according to Natura 2000 habitats: fixed (grey) dunes (546.27 ha; 55.28%), wooded dunes (222.61 ha; 22.53%), shifting (white) dunes (150.30 ha; 15.21%), embryonic dunes (68.3 ha; 6.91%) and humid dune slacks (0.94 ha; 0.09%). The highest positioned CDLs on the Balkan Peninsula were registered at perched Sozopol Sand Dunes (61 m a.s.l.) and cliff-top dunes at Arkutino (50.2 m a.s.l.). The multi-temporal analysis of photogrammetric DSMs and raster OMs showed the permanent loss of five dune systems in the Pomorie-Burgas-Rosenets coastal sector. The accrued UAS data approach allowed us to identify and map eight dune systems for the first time: Zlatni Pyasatsi (Panorama), Asparuhovo (Varna), Byala, Atanasovska Kosa, Central Beach (Burgas), Chernomorets, Kavatsite (partly) and Rezovo-Kastrich. A high anthropogenic footprint was registered on 50.7 ha (5.1%) of the entire dune surface. In the final stage of the study, human interventions that caused degradation and permanent loss of dunes (12 ha) over the last 15 years along the BBSC were shown. The main causes for dune degradation along BBSC have been documented, such as massive tourism development after the socialist period, road construction, recreational pressure exerted on the dunes, human trampling, lack of designated footpaths in areas with fixed and mobile dunes, off-road vehicles and parking lots (especially at camping sites), dumping of garbage and anthropogenic marine litter on the sand dunes etc.

show abstract

Current state and historical notes on sand dune flora of the Bulgarian Black Sea Coast

Cited by 4 publications

References 25 publications

Vegetation Characteristics and Recent Successional Trends of Sand Dune Habitats at the Bulgarian Black Sea Coast

Vegetation Characteristics and Recent Successional Trends of Sand Dune Habitats at the Bulgarian Black Sea Coast

A newcomer from the east: naturalisation of Gypsophila perfoliata L. around the city of Miskolc (Northeast Hungary)

Spatial distribution of sand dunes along the Bulgarian Black Sea Coast: inventory, UAS mapping and new discoveries

Contact Info

Product

Resources

About

Current state and historical notes on sand dune flora of the Bulgarian Black Sea Coast

Cited by 4 publications

References 25 publications

Vegetation Characteristics and Recent Successional Trends of Sand Dune Habitats at the Bulgarian Black Sea Coast

Vegetation Characteristics and Recent Successional Trends of Sand Dune Habitats at the Bulgarian Black Sea Coast

A newcomer from the east: naturalisation of Gypsophila perfoliata L. around the city of Miskolc (Northeast Hungary)

﻿Spatial distribution of sand dunes along the Bulgarian Black Sea Coast: inventory, UAS mapping and new discoveries

Contact Info

Product

Resources

About

Spatial distribution of sand dunes along the Bulgarian Black Sea Coast: inventory, UAS mapping and new discoveries