Luise Aiglsperger


Population studies on green toads in Vienna (Simmeringer Haide)

MSc Student
Advisor: Günter Gollmann

Unit for Theoretical Biology, Department of Evolutionary Biology
University of Vienna


The Green Toad (Bufotes viridis) is classified as 'vulnerable' (VU) in the Red List of Threatened Species in Austria and is listed in the Vienna Nature Conservation Ordinance as a priority strictly protected species with habitat protection throughout the urban area.As a pioneer and synanthropic species, the European Green Toad is not very demanding and quickly colonizes newly created habitats in urban areas. Despite this adaptable way of life, the population trend of Bufotes viridis is declining throughout Austria.In order to learn more about the causes of endangerment and populations of Green Toads, regular population surveys are necessary. In Vienna, several populations of the Green Toad have been documented and scientifically monitored for years.In my master thesis I work with the population of the Green Toad at the site Simmeringer Haide and survey the status and development of the population there. This capture-recapture study will record survival rates, population size estimates, and body condition of Green Toads and compare them to previous years. It contributes to a data basis that may help protecting the Green Toad in the Vienna urban area in the future.