Yazar "Özkan M.B." seçeneğine göre listele

Listeleniyor 1 - 4 / 4
  • Küçük Resim Yok
    Öğe
  • Küçük Resim Yok
    Öğe
    Ecological networks as a new approach for nature conservation in Turkey: A case study of İzmir Province
    (Elsevier, 2009) Hepcan S.; Hepcan C.C.; Bouwma I.M.; Jongman R.H.G.; Özkan M.B.
    This paper aims to identify and evaluate a potential ecological network including core areas and large-scale corridors in the İzmir Province and its surrounding areas, Turkey. It is one of the first studies on the connectivity for mammal species and the detection of potential ecological corridors for Turkey. Four wide-ranging species (Hyaena hyaena, Lynx lynx, Caracal caracal, and Felis chaus) have been chosen as target species. Existing Key Biodiversity Areas (KBAs) and surrounding lands have been evaluated based on a three criteria: (1) vegetation/habitat types, (2) carrying capacity and (3) road density using simple GIS-based models. The results are evaluated using the Minimum Viable Metapopulation (MVMP) standards. No KBA in the study region has a Key Population (KP) or Minimum Viable Population (MVP) with the exception of Boz Daglar. Least cost-path analysis has been applied to identify linkages between KBAs relevant for the four target species. The conclusion is that it is possible to maintain MVPs in the region when the KBAs are linked by ecological corridors. © 2008 Elsevier B.V. All rights reserved.
  • Küçük Resim Yok
    Öğe
    Establishing ecological networks for habitat conservation in the case of Çeşme-Urla Peninsula, Turkey
    (2011) Hepcan Ç.C.; Özkan M.B.
    The study involves the Çeşme-Urla Peninsula, where habitat fragmentation and loss, which threaten biological diversity, have become an urgent matter of concern in recent decades. The study area has been subjected to anthropogenic pressures and alterations due to ongoing and impending land uses. Therefore, ecological networks, as an appropriate way to deal with habitat fragmentation and loss and to improve ecological quality, were identified in the study area as one of the early attempts in the country to maintain its rich biodiversity. In this sense, core areas and ecological linkages as primary components of ecological networks were established on the basis of sustaining natural habitats. A GIS-based model was created to identify core areas and to facilitate the ecological connectivity. The modeling process for core areas and corridors combined 14 and 21 different variables, respectively. The variables were used as environmental inputs in the model, and all analyses were materialized in ArcGIS 9.2 using grid functions of image analysis and spatial analyst modules. As a result, six core areas and 36 corridor alternatives were materialized. Furthermore, some recommendations for the implementation and management of the proposed ecological networks were revealed and discussed. © 2010 Springer Science+Business Media B.V.
  • Küçük Resim Yok
    Öğe
    Monitoring land use change in the Çeşme coastal zone, Turkey using aerial photographs and satellite imaging
    (2011) Hepcan C.C.; Turan I.A.; Özkan M.B.
    Humans change the landscapes and especially the coastal zones for their requirements. The aim of the study was to analyse land use changes in the Çeşme coastal zone, Turkey, during a 48-year period (1957-2005) using remote sensing and GIS. In this study, land use changes in the Çeşme coastal zone were analysed using the four sets of land use maps derived from aerial photographs and classified satellite image taken in the years 1957, 1976, 1995 and 2005. Post-classification algorithm change detection was applied to observe land use changes during three time periods: Period 1 (1957-1976), Period 2 (1976-1995) and Period 3 (1995-2005). The results showed that natural land cover and agricultural lands decreased and built-up area increased throughout the study area during the 48-year period between 1957 and 2005. Furthermore, land use change was successively increased in Period 1, Period 3 and Period 2. Copyright © 2010 John Wiley & Sons, Ltd.