Journal
PLANTS-BASEL
Volume 11, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/plants11030353
Keywords
biodiversity; ecosystem services; grassland; herbal medicine; land-use; nature conservation; plant ecology; sustainable management
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Semi-natural grasslands in Estonia have high biodiversity and cultural values. The ratio and frequency of medicinal plant species in these grasslands are influenced by management practices. Alvars have the highest ratio of medicinal plant species, followed by floodplain and wooded meadows. Wooded meadows and alvars have approximately twice the number of medicinal plant species compared to naturally growing broadleaved forests.
Semi-natural grasslands (SNG) are valuable for their high biodiversity, cultural and landscape values. Quantitative information about medicinal plants (MP) in SNG facilitates the evaluation of ecosystem services of these habitats. Different literature sources were used to assess the ratio and frequency of MP species in several Estonian SNG and to evaluate the impact of management on these values. Lists of MP species according to different MP definition scenarios are available. The ratio of MP species in the local plant species list was the largest in alvars, followed by floodplain and wooded meadows. The average number of MP species in wooded meadows and alvars was about twice of that found in naturally growing broadleaved forest (according to the most detailed MP species list, 7.2, 7.8 and 4.3 plot(-1), respectively). Fertilization of wooded meadows had no significant impact on MP species ratio, but decreased the percentage of MP biomass. Coastal meadows had few MP species and the impact of management quality depended on adopted MP scenarios. Comparison of Ellenberg indicator values revealed that MP species were more drought-tolerant, with higher commonness and more anthropophyte than the rest of studied grassland species.
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