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Article

Defining Conservation Requirements for the Suweon Treefrog (Dryophytes suweonensis) Using Species Distribution Models

1
Division of Science Education, Kangwon National University, Chuncheon, Kangwon 24341, Korea
2
Laboratory of Animal Behavior and Conservation, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
*
Author to whom correspondence should be addressed.
Academic Editor: Luc Legal
Diversity 2021, 13(2), 69; https://doi.org/10.3390/d13020069
Received: 17 November 2020 / Revised: 21 January 2021 / Accepted: 3 February 2021 / Published: 9 February 2021
Numerous amphibian species are declining because of habitat loss and fragmentation due to urbanization of landscapes and the construction of roads. This is a mounting threat to species restricted to habitats close to urban areas, such as agricultural wetlands in North East Asia. The Suweon treefrog (Dryophytes suweonensis) falls into the list of species threatened with habitat loss and most populations are under threat of extirpation. Over the last decades, sub-populations have become increasingly disconnected and specifically the density of paved roads has increased around the only site connecting northern and southern Seoul populations. We surveyed this locality in Hojobeol, Siheung, Republic of Korea in 2012, 2015 and 2019 to first confirm the decline in the number of sites where D. suweonensis was present. The second objective was to analyze the habitat characteristics and determine the remaining suitable habitat for D. suweonensis through a species distribution model following the maximum entropy method. Our results show that rice paddy cover and distance from the paved road are the most important factor defining suitable habitat for D. suweonensis. At this locality, uninterrupted rice paddies are a suitable habitat for the species when reaching at least 0.19 km2, with an average distance of 138 ± 93 m2 from the roads. We link the decrease in the number of sites where D. suweonensis is present with the decrease in rice paddy cover, generally replaced by localized infrastructures, greenhouses and habitat fragmentation. Rice paddies should remain connected over a large area for the protection of the remaining populations. In addition, habitat requirements should be integrated in the requisites to designate protected areas. View Full-Text
Keywords: Dryophytes suweonensis; fragmentation; habitat; rice paddy; species distribution model Dryophytes suweonensis; fragmentation; habitat; rice paddy; species distribution model
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MDPI and ACS Style

Park, I.-K.; Park, D.; Borzée, A. Defining Conservation Requirements for the Suweon Treefrog (Dryophytes suweonensis) Using Species Distribution Models. Diversity 2021, 13, 69. https://doi.org/10.3390/d13020069

AMA Style

Park I-K, Park D, Borzée A. Defining Conservation Requirements for the Suweon Treefrog (Dryophytes suweonensis) Using Species Distribution Models. Diversity. 2021; 13(2):69. https://doi.org/10.3390/d13020069

Chicago/Turabian Style

Park, Il-Kook, Daesik Park, and Amaël Borzée. 2021. "Defining Conservation Requirements for the Suweon Treefrog (Dryophytes suweonensis) Using Species Distribution Models" Diversity 13, no. 2: 69. https://doi.org/10.3390/d13020069

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