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Estimating the Potential Habitat of Breeding Egrets and Herons (Family Ardeidae) for Urban Forest Management in Daejeon Metropolitan City, Korea

Estimating the Potential Habitat of Breeding Egrets and Herons (Family Ardeidae) for Urban Forest Management in Daejeon Metropolitan City, Korea

Man-Seok Shin1, Hyun-Ju Cho2 and Eun-Jae Lee3*

1Divison of Ecological Information, National Institute of Ecology, Seocheon-gun 33657, Republic of Korea
2Dept. Urban Planning and Landscape Architecture, Daegu University, Gyeongsan 38453, Republic of Korea
3Sustainability Research Dept., Daejeon Sejong Research Institute, Daejeon 34863, Republic of Korea
 
* Corresponding author: wildlife@dsi.re.kr

ABSTRACT

Potential breeding habitat of egrets and herons was evaluated using the Maximum Entropy Model (MaxEnt). Model output can help guide management of nuisance egret and heron rookeries in urban forests of Daejeon Metropolitan City, Korea. This study examined 126 locations regarded as breeding sites of egrets and herons at the nationwide census conducted by the National Institute of Environmental Research between 2019 and 2020. In addition, 252 randomly selected locations were used to identify the significant variables among a total of 15 environmental variables within 4 factors (topography, natural environment, distance and climate). Twelve variables were significantly different between the breeding and randomly selected points. The final 10 variables were selected through Pearson’s correlation analysis. Using MaxEnt, breeding area was estimated using the 10 selected variables in Daejeon. The area under the receiver operating characteristic curve (AUC) was 0.950, which was the average value through 10-fold cross-validation to estimate the model reliability. The potential breeding habitat for egrets and herons was estimated to be 106.69 km2 (19.76% of the total area) in Daejeon. Within the estimated potential habitat, 11.82 km2 (12.46%) were less than 50 m from the residential district while 79.85 km2 (88.92%) were more than 50m from the residential district. Discriminative management strategies considering the breeding location of egrets and herons should be applied not only to minimize conflicts with residents, but also to maintain stable egret and heron breeding sites in Daejeon, Korea. Also, our study can be used to select suitable alternative breeding habitat for egrets and herons without conflicts in urban forests.

 

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Pakistan Journal of Zoology

December

Vol. 54, Iss. 6, Pages 2501-3000

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