Small alterations in habitat can severely impact amphibian populations, which depend on both aquatic and terrestrial environments to survive and thrive. Because habitat selection is driven by a complex array of biotic and abiotic environmental factors, ecological modeling has become a pivotal tool in predicting areas suitable for occupation and reproduction.

A recent study in Acta Herpetologica utilized ecological modeling to assess habitat suitability for the Asiatic toad, Bufo gargarizans, in South Korea. Although the species is currently classified as Least Concern, it is experiencing population declines throughout its range. The researchers analyzed 17 environmental variables across 123 sites located in the northern, central, and southern regions of the country.

The study identified six reliable predictors for the selection of breeding sites: water temperature, dissolved oxygen, average water depth at one meter from the shoreline, site area, and the percentage of both barren land and water bodies within a one-kilometer buffer. Among these, water depth was the most influential factor, with the most suitable depth identified between 30 and 48 centimeters.

The significance of the surrounding water bodies and barren land suggests that Bufo gargarizans continues to prefer high-humidity habitats, despite possessing thicker skin that offers greater resistance to dry conditions. These findings provide practical frameworks for the effective restoration of breeding sites. However, further research is required to explore broader ecological dynamics, such as interspecific interactions with syntopic species that have overlapping breeding periods.

Click here and read the full paper to find out more.

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