생태와환경 (Korean Journal of Ecology and Environment)

  • 제54권2호
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  • Pages.96-101
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  • 2021
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  • 2288-1115(pISSN)
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  • 2288-1123(eISSN)
한국수생태학회 (The Korean Society of Limnology)
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외래종 배스가 저수지 어류군집에 미치는 영향: 중초산과 북초산 저수지를 대상으로

Effect of Invasive Species on Reservoir Fish Communities: For Joongchosan and Bukchosan

  • 투고 : 2021.05.28
  • 심사 : 2021.06.14
  • 발행 : 2021.06.30
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초록

2020년 3월부터 10월까지 군산시의 중초산 저수지와 북초산 저수지의 어류상 및 군집분석을 하였다. 조사기간 동안 채집된 어류는 중초산 저수지에서 4목 5과 8종 1,895개체, 북초산 저수지에서 3목 5과 7종 171개체였다. 중초산 저수지의 우점종은 참붕어(661개체, 상대풍부도: 34.7%) 아우점종은 흰줄납줄개(660개체, 상대풍부도: 34.7%), 북초산 저수지는 배스(77개체, 45.0%)와 붕어(60개체, 35.1%) 순으로 나타났다. 군집분석 결과 중초산 저수지는 우점도 0.697, 다양도 1.483, 균등도 0.713, 종 풍부도 0.928, 북초산 저수지는 우점도 0.801, 다양도 1.304, 균등도 0.670, 종 풍부도 1.167을 보였다. 본 연구 결과를 통해 생태계 교란생물인 배스의 영향으로 토착어종의 개체수와 군집의 다양도가 감소한 것을 확인할 수 있었다. 따라서 외래어종의 지속적인 제거와 유입을 막는 관리가 요구된다.

In this study, we wanted to obtain the information of the ecological impact of alien species on native fish communities. The Ichthyofauna and fish community in Joongchosan Reservoir and Bukchosan Reservoir in Gunsan-si Korea were investigated over the period from March to October 2020. During the survey period, a total of 1,895 individuals representing eight species, five families, and four orders were caught in the Joongchosan Reservoir. In the Bukchosan Reservoir, a total of 171 individuals were caught, representing seven species, five families, and three orders. The dominant species and subdominant species of Joongchosan Reservoir were Pseudorasvora parva (661 individuals, RA: 34.7%), and Rhodeus ocellatus (660 individuals, RA: 34.7%). Conversely, Micropterus salmoides (77 individuals, RA: 45.0%), and Carassius auratus (60 individuals, RA: 35.1%), were the two most common species in the Bukchosan Reservoir. The community indices showed a dominance of 0.697, diversity of 1.483, evenness of 0.713, and species richness of 0.928 in the Joongchosan Reservoir. In comparison, the community indices in the Bukchosan Reservoir showed a dominance of 0.801, diversity of 1.304, evenness of 0.670, and species richness of 1.167. This study confirms that the number of native fishes and the associated community diversity have decreased due to the influence of Micropterus salmoides. This highlights the need for removal of alien species from reservoirs, while simultaneously preventing future introductions.

키워드

과제정보

본 조사는 국립생태원의 외래생물 안전관리 연구사업에 의해 수행되었으며, 특히 생태계교란 생물 모니터링 NIE-법정연구-2021-09의 사업지원에 의해 수행되었습니다.

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