FORESTIST, cilt.1, sa.1, ss.25-35, 2021 (ESCI)
Forest fragmentation is the separation or division of large forests into smaller units. Areas with non-forest
lands significantly threaten the health, function, and value of the remaining forest. This study describes the
effects of fragmentation on diversity of forest in the city of Istanbul. We obtained inventory data from local
forest management and silvicultural plans (2002–2007). The data were used to determine the spatial variation
in forest structure and biodiversity across six urban forest fragments in Istanbul, Turkey. We calculated a core
set of patch- and class-level metrics in order to predict forest basal area within sample plots. We tested a number
of regression models and employed the best-fitted model to extrapolate forest diversity across the urban
forest fragments. Results indicate consistent relationship between spatial and silvicultural variables, suggesting
the impact of fragmentation on the forest structure and biodiversity in Istanbul. Species richness of green
spaces in urban areas was higher when compared to that of peri-urban areas. The location and the sizes of
urban forests were associated with difference in societal expectations from these areas. As a consequence of
the expectations, there was a change in forest structure in Istanbul. This study could be conducted for any
other urban areas including large growing cities and megalopolis.