Understanding the factors that determine the success of lichen translocations is critical for effective conservation of lichen biodiversity. Both physiological acclimation and the genetic structure of source populations can influence conservation outcomes. This study examined seasonal variation in physiological parameters (specific thallus mass—STM, chlorophyll a fluorescence—FV/FM, and chlorophyll content) of Lobaria pulmonaria (L.) Hoffm. across one year, selecting three source populations along a latitudinal gradient in Mediterranean forests in Italy. Genetic structure of their mycobiont and photobiont were also characterized. STM differed significantly among populations and seasons, with consistent increases from March to September. In contrast, FV/FM remained relatively stable, while chlorophyll content showed the highest values in December. Genetic analyses revealed clear differentiation among populations for both symbionts. These results suggest that L. pulmonaria can acclimate physiologically to seasonal environmental changes and highlight the importance of considering local genetic structure when selecting source populations for translocation. Integrating physiological and genetic information provides a robust framework for improving conservation strategies for this species.
Nuzzo et al. (Tue,) studied this question.
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