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<p><i>Salvia nutans</i> is a steppe relict&#xa0;species characteristic of the western Palaearctic steppe and forest-steppe zones. It is vulnerable to overgrazing and grassland conversion to arable land. As a result of these anthropogenic pressures, field observations and the&#xa0;available literature suggest that the species may be declining locally in Romania. Against this background, the present study aims to identify the plant associations in which the species occurs&#xa0;and to assess the environmental factors shaping the floristic composition of its habitats. For the vegetation analysis, a total of 870 relevés were analysed. The floristic composition data, together with the environmental variables, were included in multivariate analyses. Among the 870 relevés, most records (468) belong to plant associations within the alliance <i>Stipion lessingianae</i>. Annual precipitation (BIO12) emerged as the most important predictor among the environmental variables included in the model, explaining the largest share of the constrained variation. However, the overall proportion of explained variation remained low, indicating that additional unmeasured factors likely influence the floristic composition of <i>S. nutans</i> communities. The species&#xa0;occurred mainly on moderately to very steep, south- to southwest-facing slopes, at a mean elevation of approximately 359&#xa0;m a.s.l. The species exhibited a unimodal response along the precipitation gradient, with maximum cover&#xa0; under intermediate moisture conditions. <i>Salvia nutans</i> was strongly&#xa0; associated&#xa0;with climatic conditions, highlighting its role as an indicator species for continental, xerophilic grasslands. Given its vulnerability to land-use changes, appropriate habitat management<i>,&#xa0;</i>including moderate grazing or mowing, and long-term monitoring&#xa0;are required to support its persistence and habitat stability.</p>

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Phytocoenological and ecogeographical study of Salvia nutans in Romania

  • 期刊论文

  • 发表日期：

    2026年4月24日

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  • Simona Dumitrița Chirilă,
  • Alexandru Sabin Bădărău,
  • Mihai Doroftei,
  • Kiril Vassilev,
  • Iuliia Vasheniak

摘要

Salvia nutans is a steppe relict species characteristic of the western Palaearctic steppe and forest-steppe zones. It is vulnerable to overgrazing and grassland conversion to arable land. As a result of these anthropogenic pressures, field observations and the available literature suggest that the species may be declining locally in Romania. Against this background, the present study aims to identify the plant associations in which the species occurs and to assess the environmental factors shaping the floristic composition of its habitats. For the vegetation analysis, a total of 870 relevés were analysed. The floristic composition data, together with the environmental variables, were included in multivariate analyses. Among the 870 relevés, most records (468) belong to plant associations within the alliance Stipion lessingianae. Annual precipitation (BIO12) emerged as the most important predictor among the environmental variables included in the model, explaining the largest share of the constrained variation. However, the overall proportion of explained variation remained low, indicating that additional unmeasured factors likely influence the floristic composition of S. nutans communities. The species occurred mainly on moderately to very steep, south- to southwest-facing slopes, at a mean elevation of approximately 359 m a.s.l. The species exhibited a unimodal response along the precipitation gradient, with maximum cover  under intermediate moisture conditions. Salvia nutans was strongly  associated with climatic conditions, highlighting its role as an indicator species for continental, xerophilic grasslands. Given its vulnerability to land-use changes, appropriate habitat management, including moderate grazing or mowing, and long-term monitoring are required to support its persistence and habitat stability.