Policy Recommendation for the Conservation of the Suweon Treefrog (Dryophytes suweonensis) in the Republic of Korea

Borzée, Amaël; Jang, Yikweon

doi:10.3389/fenvs.2019.00039

Cited by 10 publications

(13 citation statements)

References 36 publications

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“…Finally, as two of the five known populations for D. flaviventris are already extirpated, in Gunsan and Wanju (R Korea), it is important to conduct conservation assessments rapidly to prevent the extinction of this species occurring on a very narrow and declining range. The policy recommendation for the conservation of D. suweonensis also applies to D. flaviventris [168], and we urge local governments to take actions to designate protected areas for this species, an urgent requirement for numerous species in R Korea [169]. This situation is however not restricted to D. flaviventris as only two populations of D. immaculatus could be found over 49 days of field work between 2017 and 2019, despite the species being assessed as abundant a few decades ago.…”

Section: Plos Onementioning

confidence: 99%

Yellow sea mediated segregation between North East Asian Dryophytes species

et al. 2020

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While comparatively few amphibian species have been described on the North East Asian mainland in the last decades, several species have been the subject of taxonomical debates in relation to the Yellow sea. Here, we sampled Dryophytes sp. treefrogs from the Republic of Korea, the Democratic People's Republic of Korea and the People's Republic of China to clarify the status of this clade around the Yellow sea and determine the impact of sea level change on treefrogs' phylogenetic relationships. Based on genetics, call properties, adult morphology, tadpole morphology and niche modelling, we determined the segregated status species of D. suweonensis and D. immaculatus. We then proceeded to describe a new treefrog species, D. flaviventris sp. nov., from the central lowlands of the Republic of Korea. The new species is geographically segregated from D. suweonensis by the Chilgap mountain range and known to occur only in the area of Buyeo, Nonsan and Iksan in the Republic of Korea. While the Yellow sea is the principal element to the current isolation of the three clades, the paleorivers of the Yellow sea basin are likely to have been the major factor for the divergences within this clade. We recommend conducting rapid conservation assessments as these species are present on very narrow and declining ranges.

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Section: Plos Onementioning

confidence: 99%

Yellow sea mediated segregation between North East Asian Dryophytes species

et al. 2020

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“…The genus Dryophytes was only included in group A4, and two species (D. japonicas and D. suweonensis) were located at the same spot on the NMDS plot. Unlike other groups, the highest occurrence on the map is concentrated among specific regions, reflecting the confined distribution of D. suweonensis 30 . Group A5 (salamanders) includes all salamander species.…”

Section: Resultsmentioning

confidence: 83%

Functional group analyses of herpetofauna in South Korea using a large dataset

2023

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Functional traits are characteristics of species that affect their fitness and ecosystem, and they greatly influence ecological niches. Thus, biodiversity assessment based on functional groups rather than species per se can more realistically reflect the ecological niche space. As essential players of ecosystem functions, herpetofauna are appropriate subjects of functional trait-based analyses. In this study, using a nationwide dataset and applying trait information and ecological niche modeling, the richness within each functional group, and the taxonomic and functional diversity indices of South Korean herpetofauna were visualized to identify and compare the geographic distributions. The results revealed that the reptile community seemed more locally diverse with more overlapping randomized patterns among groups than amphibians, while amphibians showed wider distributions and a higher within-grid occurrence ratio. Functional diversity indices of reptiles also showed more randomized geographic patterns with higher levels at Jejudo Island than amphibians. The findings of this study may help to identify biodiversity hot spots and understand its ecosystem health. Increasing survey data and trait information will improve the assessment.

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“…As the rate of population decrease is accelerating [96], the category C should be revised in 10 years, as the species will be listed as EN under the criterion C1 if the current dynamics are not corrected and CR in 40 years (based on data extracted from the PVA). I recommend the immediate protection of habitat of the species, along with other agricultural adjustments such as a limiting the height at which weeds are cut (see [101] for details). Since the populations with the highest numbers of individuals also match with the areas providing the highest rice yields [95], the conservation program should be done in concert with farmers, as neglecting rice paddies would almost certainly result in the extinction of the species.…”

Section: Discussionmentioning

confidence: 99%

Recommendations for IUCN Red List Conservation Status of the “Dryophytes immaculatus Group” in North East Asia

Borzée

2020

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Threat assessment is important to prioritize species conservation projects and planning. The taxonomic resolution regarding the status of the “Dryophytes immaculatus group” and the description of a new species in the Republic of Korea resulted in a shift in ranges and population sizes. Thus, reviewing the IUCN Red List status of the three species from the group: D. immaculatus, D. suweonensis and D. flaviventris and recommending an update is needed. While the three species have similar ecological requirements and are distributed around the Yellow Sea, they are under contrasting anthropological pressure and threats. Here, based on the literature available, I have applied all IUCN Red List criterion and tested the fit of each species in each criteria to recommend listing under the appropriate threat level. This resulted in the recommendation of the following categories: Near Threatened for D. immaculatus, Endangered following the criteria C2a(i)b for D. suweonensis and Critically Endangered following the criteria E for D. flaviventris. All three species are declining, mostly because of landscape changes as a result of human activities, but the differences in range, population dynamics and already extirpated subpopulations result in different threat levels for each species. Dryophytes flaviventris is under the highest threat category mostly because of its limited range segregated into two subpopulations; and several known extirpated subpopulations. Immediate actions for the conservation of this species are required. Dryophytes suweonensis is present in both the Republic of Korea and the Democratic Republic of Korea (DPR Korea) and is under lower ecological pressure in DPR Korea. Dryophytes immaculatus is present in the People’s Republic of China, over a very large range despite a marked decline. I recommend joint efforts for the conservation of these species.

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Policy Recommendation for the Conservation of the Suweon Treefrog (Dryophytes suweonensis) in the Republic of Korea

Cited by 10 publications

References 36 publications

Yellow sea mediated segregation between North East Asian Dryophytes species

Yellow sea mediated segregation between North East Asian Dryophytes species

Functional group analyses of herpetofauna in South Korea using a large dataset

Recommendations for IUCN Red List Conservation Status of the “Dryophytes immaculatus Group” in North East Asia

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