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Physical Habitat Characteristics of the Endangered Macroinvertebrate Koreoleptoxis nodifila (Martens, 1886) (Mollusca, Gastropoda) in South Korea

한국산 멸종위기 무척추동물 염주알다슬기 (연체동물문, 복족강)의 물리적 서식처 특성

  • Jin-Young Kim (Research Center for Endangered Species, National Institute of Ecology) ;
  • Ye ji Kim (Department of Life Science, Kyonggi University) ;
  • Ah Reum Kim (Department of Life Science, Kyonggi University) ;
  • In-Seong Yoo (Research Center for Endangered Species, National Institute of Ecology) ;
  • Hwang Kim (Research Center for Endangered Species, National Institute of Ecology) ;
  • Dongsoo Kong (Department of Life Science, Kyonggi University)
  • 김진영 (국립생태원 멸종위기종복원센터) ;
  • 김예지 (경기대학교 생명과학과) ;
  • 김아름 (경기대학교 생명과학과) ;
  • 유인성 (국립생태원 멸종위기종복원센터) ;
  • 김황 (국립생태원 멸종위기종복원센터) ;
  • 공동수 (경기대학교 생명과학과)
  • Received : 2022.02.14
  • Accepted : 2022.03.30
  • Published : 2022.06.30

Abstract

Koreoleptoxis nodifila (Martens, 1886) is an endangered species only living in the central and north streams of South Korea. However, there is a lack of information on physical habitat characteristics of K. nodifila. We aimed to determine preference ranges for water depth, current velocity, streambed substrate of K. nodifila. The weibull model was used to estimate the habitat suitability based on distribution of individual abundance by physical factors. Optimal depth preferences ranged from 0.53~17.17 cm, current preferences ranged from 48.40~81.03 cm s-1 and substrate (𝜱m) preferences ranged from -4.36~ -2.26. Median values of central tendency were determined as follows: water depth 16.73 cm, current velocity 65.23 cm s-1, substrate -3.51. Mean values of central tendency were determined as follows: water depth 21.32 cm, current velocity 65.65 cm s-1, substrate -3.63. Mode values of central tendency were determined as follows: water depth 5.17 cm, current velocity 64.77 cm s-1, substrate -3.24. Based on the habitat suitability analysis, the microhabitat types of K. nodifila were determined as riffle and coarse-grained streambed.

환경부 생물측정망 ('08~'18) 조사결과를 이용하여 저서성 대형무척추동물인 멸종위기 2급 염주알다슬기 (연체동물문, 복족강)의 물리적 서식생태 특성을 분석한 결과 다음과 같은 결론을 얻었다. 첫째, 적정 수심범위는 0.53~17.17 cm였으며, 중위값은 16.73 cm, 평균값은 21.32 cm, 최빈값은 5.17 cm였다. 둘째, 적정 유속범위는 48.40~81.03 cm s-1였으며, 중위값은 65.23 cm s-1, 평균값은 65.65 cm s-1, 최빈값은 64.77 cm s-1였다. 셋째, 적정하상입경 (𝜱m) 범위는 -4.36~-2.26이었으며, 중위값은 -3.51, 평균값은 -3.63, 최빈값은 -3.24였다. 넷째, 염주 알다슬기의 하천 내 물리적 미소서식처 특성은 여울구간의 조립질 하상으로 확인되었다.

Keywords

Acknowledgement

본 논문은 환경부 재원으로 국립생태원 멸종위기 종복원센터에서 수행한 '멸종위기종 야생개체군 동태 및 원인 분석 연구(NIE-2021-기반연구-46)'와 환경부 물환경정보시스템 '하천생물측정망('08~'18)'의 공개 정보를 이용하여 수행하였습니다.

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