Abstract
Montane grasslands must be managed effectively to conserve biodiversity since they play an important role in sustaining healthy and diversified ecosystems. A 9 km transect was used to assess plant and lepidopteran biodiversity in mountain meadows in Bilbor, Romania. Different management strategies were used in each plot. The identified plants were divided into three categories: Poaceae, Fabaceae, and other families. In the case of lepidoptera, diurnal butterfly species from three families were observed: Lycaenidae, Nymphalidae, and Pieridae. The number of plant species in the abandoned meadows was reduced, with a focus on those with low fodder value (Nardus stricta and Deschampsia flexuosa), as well as some invasive species (Vaccinium myrtillus). The implementation of protection and conservation measures resulted in species diversification, with an increase in the number of Poaceae (11 to 16 species) and Fabaceae (nine to fourteen species). In addition to providing more feed, the flora can benefit lepidopteran entomofauna. During the monitoring period, 29 species were identified from the three lepidopteran families. The most abundant species were Maniola jurtina L., Boloria selene Denis & Schif., Argynnis paphia L., Coenonympha pamphilus L. (Nymphalidae), Pseudophilotes schiffermuelleri Hemming (Lycaenidae), and Pieris mannii Mayer (Pieridae). Traditional mowing and grazing activities can help to maintain the structure and composition of these ecosystems, limiting biological succession to forest and sustaining floristic biodiversity.
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