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The Relationship between the Dragonfly Diversity and the Environmental Factors in the Juam Wetland

주남습지에 서식하는 잠자리와 주변환경과의 관계

  • Kim, Ji-Suk (Life and Industry Convergence Research Institute, Pusan National Univ.) ;
  • Lee, Soo-Dong (Dept. of Landscape Architecture, Gyeongnam National University of Science and Technology) ;
  • Kim, Dong-Pil (Dept. of Landscape Architecture Pusan National Univ.)
  • 김지석 (부산대학교 생명산업융합연구원) ;
  • 이수동 (경남과학기술대학교 조경학과) ;
  • 김동필 (부산대학교 조경학과)
  • Received : 2017.11.22
  • Accepted : 2018.01.16
  • Published : 2018.02.28

Abstract

This study surveyed the species and population of dragonflies in 20 study sites in the Junam wetland in May and July 2015 to investigate the relationship between the dragonflies and the inhabited environment. We measured the environmental factors such as the area of emergent plants, the area of floating and floating-leaved plants, the area of water surface, the area of water plants, and the nearby land-use type and analyzed the relationship to the dragonfly species, population, and diversity index. We found 757 dragonflies belonging to 21 species of 6 families. The area of floating and floating-leaved plants and the area of water surface affected the species diversity. The area of floating and floating-leaved plants and the area of surface water, in particular, showed the positive correlation with the species richness and the dominance value, respectively. The area of water surface showed the negative correlations with Shannon's diversity index and evenness. Among the type of surrounding land-uses, the dry fields and orchards showed significantly lower average species richness than wetlands. Among the species, Cercion calamorum and Crocothemis servilia were positively correlated with floating and floating-leaved plants. Cercion v-nigrum and Epophthalmia elegans were positively correlated with the area of water surface, and Ischnura asiatica and Ceriagrion nipponicum were negatively correlated. The recent uncontrolled proliferation of lotus colony in the Junam wetland is likely to affect greatly the species composition of dragonflies which have a close relationship with plant species.

주남습지에 서식하는 잠자리와 서식 환경과의 관계를 알아보기 위하여 2015년 5월과 7월에 20개 조사구를 대상으로 잠자리 종과 개체수를 조사하였다. 환경요인으로는 정수식물 면적, 부유 부엽식물 면적, 수면 면적, 수생식물면적, 교목 피도, 주변 토지이용유형, 향을 조사하여 잠자리 종과 개체수, 다양성지수 등과의 관계 등을 분석하였다. 주남습지에서 확인된 잠자리는 총 6과 21종 757개체였다. 부유 부엽식물 면적과 수면면적은 잠자리군집 다양성에 영향을 주었으며 특히 부유 부엽식물 면적은 종수, 수면면적은 우점도에 정의 상관관계를 보였다. 수면면적은 종다양성지수, 균재도와 음의 상관관계를 보였다. 주변 토지이용유형 중 밭이나 과수원은 습지지역보다 평균 종수가 낮았으며, 향이나 교목의 피도는 잠자리 군집에 영향을 주지 않았다. 종별로 보면, 등검은실잠자리와 고추잠자리 등은 부유 부엽식물과 양의 상관관계를 보였다. 왕실잠자리와 산잠자리는 수면면적과 양의 상관관계였고, 아시아실잠자리와 연분홍실잠자리는 음의 상관관계를 보였다. 최근 주남습지는 연군락이 증가하여 식물종과 밀접한 관계를 가진 잠자리 종 구성에 큰 영향을 미칠 것으로 보인다.

Keywords

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