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The oak forests in Algeria are rich in resources and services, playing an important ecological as well as socioeconomic role. The cork oak (Quercus ilex) is one of the most common species in the Chettaba forest, which occupies an area of 1127 hectares. This study aimed to assess the health of this species. The protocols for the crown condition indicator were placed in 13 plots of 0.09 hectares, randomly...