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Characteristics of Ground-dwelling Invertebrate Communities at Nari Basin and Tonggumi Area in Ulleungdo Island

울릉도 나리분지와 통구미지역의 경작지와 그 주변지역에 서식하는 지표배회성 무척추동물 군집 비교

  • 남형규 (농촌진흥청 국립농업과학원) ;
  • 송영주 (농촌진흥청 국립농업과학원) ;
  • 권순익 (농촌진흥청 국립농업과학원) ;
  • 어진우 (농촌진흥청 국립농업과학원) ;
  • 윤성수 (농촌진흥청 국립농업과학원) ;
  • 권봉관 (농촌진흥청 국립농업과학원) ;
  • 김명현 (농촌진흥청 국립농업과학원)
  • Received : 2018.01.10
  • Accepted : 2018.02.26
  • Published : 2018.03.31

Abstract

This study was carried out to define the characteristics of the identified ground-dwelling invertebrate communities at Nari basin and Tonggumi area in Ulleungdo Island, designated as a nationally important agricultural heritage. The habitat types were divided into the following categories: crop land, forest, and ecotone, and the soil-dwelling invertebrates were collected according to habitat type. The ground-dwelling invertebrates were collected using a pitfall trap, and a self-organizing map (SOM) was applied to the invertebrates dataset to define the characteristics in invertebrates distribution. The SOM clearly classified the relevant information into four clusters, and extracted ecological information from the invertebrates dataset. The cluster II was composed of invertebrate communities which are collected in the Tonggumi area. The Tonggumi area is where mountainous areas were developed for agricultural purposes, which has geographical features commonly observed in Ulleungdo Island. It is noted that the cluster II has different characteristics as compared other clusters. The results of this study are expected to be used for the preservation of agricultural environment and maintenance of biodiversity by providing basic data, on the biotope of Ulleungdo Island designated as a nationally important agricultural heritage and information on the characteristics of the applicable ground-dwelling invertebrate communities.

본 연구는 국가중요농업유산으로 지정된 울릉도 (울릉도 화산섬 밭 농업) 나리분지와 통구미지역의 지표배회성 무척추동물 군집의 특성을 확인하기 위해 수행되었다. 서식지 형태를 작물재배지역, 산림지역, 중간 경계지역으로 나누어 서식지 형태별로 지표배회성 무척추동물을 채집하였다. 채집은 함정 트랩을 이용하였고 채집된 지표배회성 무척추동물은 자기조직화지도를 이용하여 군집 특성을 규명하였다. 자기조직화지도를 통해 총 4개의 cluster로 나누었으며, cluster II에는 통구미지역에서 채집된 지표배회성 무척추동물 군집만이 속하는 특성을 확인할 수 있었다. 나리분지 (cluster I, III, IV)와 비교하여 통구미지역 (cluster II)은 울릉도에서 흔히 확인되는 산간지역 경작지를 밭으로 개간하여 이용하는 지역으로 울릉도에서 흔히 관찰되는 지형적 특성을 가지고 있다. 이러한 통구미지역은 평지의 형태를 가지는 나리분지 지역과는 달리 급경사의 특성을 나타내기 때문에 다른 군집특성이 나타난 것으로 판단된다. 본 연구결과는 국가중요농업유산으로 선정된 울릉도지역의 생물상에 대한 기초자료와 지표배회성 무척추동물 군집 특성에 관한 정보를 제공하여 농업 환경 보전 및 생물다양성 유지를 위해 활용될 것으로 기대된다.

Keywords

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