Effect of Climate Change On Populations Of Pathogen-Carrying Birds

Özet

This study aims to determine whether the bird species of Mallard (Anas clypeata), Black-headed Gull (Larus ridibundus), Common Pochard (Aythya ferina) and Armenian Gull (Larus armenicus), in which pathogenic bacteria (Enterococcus faecium, Escherichia coli, Enterococcus faecalis, Citrobacter braakii, Enterobacter cloacae, Streptococcus pyogenes and Corynebacterium diphtheria) were detected in previous studies in the Van Lake Basin, will be affected by climate change between 2022 and 2024. It was done to show how the population size changes. Among the bird species whose population has been determined, only the Black-headed gull is a migratory species and the other species are resident. In recent years, decreases in wetlands and coastal changes have been observed due to the changing precipitation regime due to climate change. Since the Van Lake basin has rich wetland potential and various habitat structures, it has been seen as one of the least affected areas in terms of ornithology. There was no significant decrease in the breeding and hatching success of the 4 bird species studied in contrary increase in population size was detected in Erçek Lake, Dönemeç Delta, Ahlat Marshes and Bendimahi Delta. The reason for this increase is considered to be that the wetlands outside the basin are seriously affected by climatic changes and the populations here come to the Van Lake Basin. It appears that population growth in species poses a risk for the spread of pathogens.