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Comparison of Insect Diversity in Relation to the Sampling Method, Time And Window

채집 방법과 시기 및 빈도에 따른 곤충의 다양성 비교

  • Park, Geun-Ho (Gyeonggi Forestry Environmental Research Institute) ;
  • Cho, Soo-Won (Department of Plant Medicine, Chungbuk National University)
  • 박근호 (경기도산림환경연구소) ;
  • 조수원 (충북대학교 농업생명환경대학 식물의학과)
  • Published : 2007.12.30

Abstract

To find out the affection of the sampling techniques to the result of a faunistic study, we surveyed the insect fauna of the Chungbuk National University (four different sites) for a year, from spring to fall. For each site, four different collecting methods: light trap, net sweeping, pitfall trap, and window trap, were applied and the collecting was done every other week for a total of 16 times. A total of 14 orders and 672 species were collected. 501 species were collected by the light trap, which covers about 75% of the total number of species, turn out to be the most effective, while other methods could only cover 18% or less. On average, only about 30% of the species collected at a given time of collecting were re-collected at the next collecting, which means about 70% of the species collected from the first collecting remains not collected in the next collecting if you collect insects every other week. The result suggests that, in addition to applying diverse collecting methods, frequent sampling, or narrow sample window, is another very important factor for a good representation of species diversity in an insect faunistic study.

곤충의 채집방법, 횟수 및 시기와 채집된 곤충의 종류 및 개체수에 대한 상관관계를 조사하기 위하여 충북대학교 내 4곳을 선정, 일 년간 봄부터 가을까지 매 2주마다 채집을 실시, 총 16회 조사를 하였다. 각 장소마다 light trap, net sweeping, pitfall trap, window trap의 4가지 채집방법을 병행 실시하여 결과를 비교분석하였다. 모두 14목 672종이 조사되었으며, 전체 종수의 75%인 501종이 채집된 유아등 채집(light trap)방법이 18% 또는 그 이하의 종수를 기록한 타 채집방법들에 비해 보다 효과적인 것으로 나타났다. 또한 각 채집시기에서 채집된 종이 2주 후의 채집에서 다시 채집되는 비율이 평균 30% 정도 밖에 되지 않았다. 결과적으로 곤충다양성 조사에 있어서 보다 의미 있는 결과를 확보하기 위해서는 다양한 채집방법과 함께 채집의 빈도(sampling window)를 높이는 것이 특히 중요한 것으로 나타났다.

Keywords

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