ANIMAL TAXONOMY AND ECOLOGY, cilt.70, sa.1, ss.30-45, 2024 (SCI-Expanded)
The rich floristic and faunistic diversity of Türkiye hosts numerous endemic species, particularly in the
southeastern region. Climate change could exert negative impacts on the distribution of endemic species
and cause their extinction. Hydrothassa anatolica S¸ahin & Özdikmen, 2019 (Chrysomelidae: Chrysomelinae)
is an endemic species distributed in the Hakkari province of Türkiye. This study assessed the
impacts of climate change on the habitat suitability of H. anatolica using maximum entropy (MaxEnt)
model. The occurrence records of the species were collected through surveys in Yüksekova district of
Hakkari province during 2022 and 2023 and used in the modeling exercise. Habitat suitability
of H. anatolica was predicted for 2021–2040, 2041–2060, 2061–2080 and 2081–2100 under two shared
socioeconomic pathways (SSPs), i.e., SSP1-2.6 (low greenhouse gas emissions scenario) and SSP5-8.5 (very
high greenhouse gas emissions scenario). A total 12 occurrence records and 9 bioclimatic variables were
used to predict the habitat suitability under current and future climatic conditions. The results indicated
that bio 6 (minimum temperature of the coldest month) bio18 (precipitation of warmest quarter) will mediate the distribution of H. anatolica under current and future climatic conditions. The areas with wet summers and cold winters were predicted highly suitable for H. anatolica. The model predicted that the
species will expand its distribution range in the future under both climate change scenarios.