Yazarlar
Yayınlar
- MakaleAçık Erişim2025Niche dynamics and climate change sensitivity in western Palearctic Zamenis ratsnakes (Reptilia: Colubridae)
Vaissi, Somaye; Kürşat Şahin, Mehmet; Kurnaz, Muammer
Climate change poses a significant threat to ectothermic, dispersal-limited reptiles such as Zamenis snakes in the western Palearctic. This study used ensemble ecological models to assess the potential distribution of six Zamenis species under climate change scenarios (SSP1-2.6 and SSP5-8.5). In addition, we examined niche dynamics through overlap, equivalency, and similarity analyses. Results reveal distinct ecological niches for each species, primarily influenced by temperature and precipitation. Projected distribution shifts vary across species, with some species like Z. persicus and Z. situla showing potential for range expansion, while others such as Z. lineatus and Z. scalaris face significant habitat loss. Z. hohenackeri and Z. longissimus exhibit complex patterns of both expansion and contraction. Niche analyses indicate varying degrees of overlap among species, with a trend toward niche conservatism. This study underscores the importance of niche ecology in understanding climate change impacts and highlights the need for species-specific conservation strategies.
- MakaleYalnız künye2022Predicted current and future distribution of the fire salamander, Salamandra infraimmaculata in Turkey
Kurnaz, Muammer
Although the fire salamander, Salamandra infraimmaculata, is relatively distributed in a broad area in the Middle East, it lives in a narrow area in southeast and south Anatolia in Turkey. The habitats of the species have been downgraded day by day, and its IUCN category is listed as "NT, and the population trend is decreasing. Within the scope of this study, a model was created with the existing locality records of the species using ecological niche modeling. As a result of this model, the current and future distribution of the species were compared. The results obtained from the analyzes made within the scope of this study showed that the current probable distribution of the species coincides with the existing locality records. However, for possible climate change scenarios, the possible future distribution of the species will be thought to be negatively affected by the increase in the greenhouse gas effect, the change in the amount of carbon dioxide, and the increase of many harmful gas concentrations in the atmosphere. If all four climate scenarios proposed in this study in the future occur sequentially, the species will have to limit or change its range, and even become will be extinct in some areas. Species conservation action plans should be initiated, and local governments should take necessary measures to prevent this from happening.