RAPID GIS-BASED MODEL FOR VULNERABILITY ASSESSMENT OF MEDICINAL PLANTS: A CASE STUDY OF THE VARNA DISTRICT (NORTH-EASTERN BULGARIA)
DOI:
https://doi.org/10.17770/etr2025vol1.8698Keywords:
Medicinal Plants, North-Eastern Bulgaria Varna District, Vulnerability AssessmentAbstract
Wild medicinal and aromatic plants represent renewable natural resources and a valuable product for Bulgaria's export. Despite the appropriate regulatory framework, there is unregulated overharvesting of medicinal plants, such as collection of plants in non-permitted quantities and collection of plants included in prohibited lists. These illegal practices in combination with the negative anthropogenic impact, lead to a cumulative negative effect on natural habitats. In accordance with the Bulgarian strategy for sustainable use of biological resources, studying, assessment, and monitoring of the natural distribution, abundance, structure, and dynamics of the wild populations are required. In order to obtain correct quantitative data, it is necessary to carry out long-term studies, especially on the effect of overexploitation. Constantly changing demand and market trends for quantities and types of medicinal plants, as well as changing negative anthropogenic factors, requires establishment of dynamic models for rapid vulnerability assessment of wild medicinal and aromatic plants. The aim of the present study is to present and discuss some theoretical aspects of Rapid Model for Vulnerability Assessment of Medicinal Plants (RMVAMP) as well as model validation in case study of the Varna District (Noth-eastern Bulgaria). This model is based on explicit criteria and on a weighted value scheme for scoring each taxon, rather than intuitive interpretation of experts in conventional assessments. Unlike other rapid methods, which predicts vulnerability of plants to overharvesting, RMVAMP assesses more aspects and critical factors which directly affect the target medicinal species. Cumulative weighted values were incorporated in GIS environment. The natural habitats in the Varna District were categorised into classes of vulnerability and were indicated on the created map using color scale. The natural habitats of herbs that should be restricted were defined.
References
R. Sharma, S. Kaur, and S. Kr. Uniyal, "Population and vulnerability assessment of high value medicinal plants in the Alpine regions of western Himalaya," J Appl Res Med Aromat Plants, Vol. 26, 100353, 2022. https://doi.org/10.1016/j.jarmap.2021.100353.
L. Evstatieva, R. Hardalova, and K. Stoyanova, "Medicinal plants in Bulgaria: diversity, legislation, conservation and trade," Phytol. Balcan., vol. 3, no. 3, pp. 415-427, 2007.
S. Vergiev, "Theoretical aspects of rapid GIS-based model for vulnerability assessment of medicinal plants in Bulgaria," Proceedings of Fifth International Conference Geographical Sciences and Education, November 4-5, 2016, Shumen, Bulgaria. 2016.
G. A. Boot, and R. E. Gullison, "Approaches to developing sustainable extraction systems for tropical forest products," Ecological Applications, vol. 5, no. 4, pp. 896-903, 1995. https://doi.org/10.2307/2269340
K. Gould, A. F. Howard, and G. Rodriguéz, "Sustainable production of non-timber forest products: natural dye extraction from El Cruce Dos Aguadas, Petén, Guatemala," For. Ecol. Manag., vol. 111, no. 1, pp. 69-82, 1998. https://doi.org/10.1016/S0378-1127(98)00309-0
S. Vergiev, "Plant biodiversity hotspots mapping and prioritization in the Bulgarian floristic region Eastern Balkan Mountains," GSC Biological and Pharmaceutical Sciences, vol. 17, no. 1, pp. 061-066, 2021. https://doi.org/10.30574/gscbps.2021.17.1.0295
S. Narayan, R. Nicholls, E. Trifonova, M. Filipova-Marinova, I. Kotsev, S. Vergiev, S. Hanson, D. Clarke, "Coastal habitats within flood risk assessments: role of the 2D SPR approach," Coastal Engineering Proceedings, 1(33) management.12, pp. 1-9, 2012. https://doi.org/10.9753/icce.v33.management.12
A. B. Cunningham, "People, park and plant use: Recommendations for multiple-use zones and development alternatives around Bwindi Impenetrable National Park, Uganda," People and Plants Working Paper, vol. 4, 58, UNESCO, Paris, 1996.
А. В. Cunningham, "Development of a conservation policy on commercially exploited medicinal plants: a case study from southern Africa," in Conservation of Medicinal Plants. Proceedings of an International Consultation. Cambridge University Press. Cambridge, UK, 1991. https://doi.org/10.1017/CBO9780511753312
A. B. Cunningham, "Integrating local plant resources and habitat management," Biodivers Conserv, vol. 3, pp. 104-115, 1994. https://doi.org/10.1007/BF02291880
A. Cunningham, Applied Ethnobotany: People, Wild Plant Use & Conservation: London, EarthscanUK & Sterling, 2001.
N. Shrestha, and K. K. Shrestha, "Vulnerability assessment of high-valued medicinal plants in Langtang National Park, Central Nepal," Biodiversity, vol. 13, no. 1, pp. 24-36, 2012. https://doi.org/10.1080/14888386.2012.666715.
D. Khakurel, Y. Uprety, S. Karki, B. Khadka, B. D. Poudel, G. Ahn, J.-Y. Cha, W.-Y. Kim, S.-H. Lee, S. Rajbhandary, "Assessing the risks to valuable medicinal plants in Nepal from human activities and environmental factors," Global Ecology and Conservation, vol. 51, e02860, 2024. https://doi.org/10.1016/j.gecco.2024.e02860.
S. Vergiev, "GIS mapping of plant biodiversity hotspots in the Bulgarian Floristic region Black Sea Coast," SocioBrains, vol. 52, pp. 172-178. 2018.
I. Kopralev, Geography of Bulgaria. Sofia: ForKom, 2002.
B. Kitanov, Vegetation. Sofia: Prof. M. Drinov Acad. Publ., 1976.
B. Asyov, А. Petrova, D. Dimitrov, R. Vasilev, Conspectus of the Bulgarian vascular flora. Distribution maps and floristic elements. Sofia: Bulgarian Biodiversity Foundation, 2012.
I. Bondev, Vegetation of Bulgaria. Map M 1:600 000. Sofia: Prof. M. Drinov Acad. Publ., 1991.
D. Peev, Red Data Book of Republic of Bulgaria. vol. 1. Plants and Fungi. Sofia: IBER – BAS & MEW, 2011.
K. Haydu, "Mapping Plant Biodiversity Hotspots at the County Scale: A New Tool for Establishing Resource Conservation Strategies," Ph.D. thesis, San Luis Obispo: Cal Poly State University, 2012.
N. Myers, "The biodiversity challenge: expanded hot-spots analysis," The Environmentalist, vol. 10, no. 4, pp. 243-256, 1990. https://doi.org/10.1007/BF02239720. R. Kumar, D. Arya, K. C. Sekar, M. Bisht, "Threat Assessment and Prioritization of High-Value Medicinal Plants in Pindari Valley, Nanda Devi Biosphere Reserve, India," Curr World Environ, vol. 16, no. 1, 2021. http://dx.doi.org/10.12944/CWE.16.1.24
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