Habitat restoration: An applicative approach to “biodiversity heritage relicts” in social-ecological systems

Many landscapes are the result of interactions between ecological processes, economic activities, and the administrative and political organisation of society. Therefore, as a consequence of human transformations over time, some landscapes may contain residual damaged habitats hosting testimony of past biodiversity that can be called “biodiversity heritage relicts”. From this perspective, the aim of the paper is to describe an applicative approach to habitat restoration in social-ecological landscapes. The approach entails the restoration of vegetation using GIS analysis integrated with field activities and a phytosociological method. The methodology includes expert and stakeholder involvement in order to increase the resilience of the measures over time, thereby consolidating landscape value. The approach was applied in the municipality of Campi Salentina, Province of Lecce, Italy, and the result was the restoration of an important riparian habitat classified under Directive 92/43/EEC as “Salix alba and Populus alba galleries” (code 92A0), which had not previously been recorded in the Province of Lecce. In this case, the project re-established a natural habitat that represented a “biodiversity heritage relict” in the landscape. The paper shows that direct knowledge of the landscape and the ability to identify “biodiversity heritage relicts”, in combination with a phytosociological approach, can enhance the effectiveness of ecological restoration projects. Moreover, social and institutional integration in projects helps ensure the management of the measures over time.