Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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A Study on the Bird Communities and Similarity of Three Streams in Daejeon Metropolitan City

대전 3대 하천의 조류군집과 유사성에 관한 연구

  • Received : 2008.09.08
  • Accepted : 2010.03.04
  • Published : 2010.04.30
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Abstract

This study was conducted from April, 2002 to March 2006, using three urban streams(Gap Stream, Yudeung Stream and Daejeon Stream) in Daejeon Metropolitan City. 12,027 individual birds summed by the peak count in 126 species, 34 families, and 13 orders were observed from three stream sites. Dominant species were of Anas poecilorhyncha, Anas crecca, Columba livia, Passer montanus, and Egretta garzetta(in that order). The groups of birds were classified into six types. The most frequent group were the arbor birds(54 species), while the smallest group was the diving ducks(7 species). As for the number of individuals, the shrub bird group had 721 individuals while the dabbling ducks observed had 4,974 individuals. Regarding the distribution of birds appeareing in each stream, 14,885 individual numbers in 114 species were observed at Gap Stream, 6,642 individuals in 90 species at Yudeung Stream and 4,202 individuals in 69 species at Daejeon Stream. Various indices of the birds were analyzed with respects to the similarities between streams. Gap Stream had similar characteristics to Yudeung Stream, and the latter was similar to Daejeon Stream. However, Gap Stream and Daejeon Stream showed different characteristics. The dominance index of each section was calculated using ten dominant bird species top-down. Subsequently, the birds and their preferred environment were analyzed. The results showed that shrub birds and arbor birds preferred the upper stream of every stream, while herons and dabbling ducks inhabited the midstream. Dabbling ducks and some diving ducks appeared downstream.

대전의 3대 하천인 갑천, 유등천, 대전천에 대하여 2002년 4월부터 2004년 3월까지와 2006년 1월부터 12월까지 3년간 조류분포에 대한 조사를 수행하였다. 조사결과 관찰된 조류는 총 13목 34과 126종 12,027개체(최대합계수)로 나타났다. 우점종은 흰뺨검둥오리, 쇠오리, 집비둘기, 참새, 쇠백로 등의 순서였다. 관찰된 조류는 크게 6개 분류군이었으며, 가장 많은 종이 관찰된 분류군은 교목성 산림조류로 54종이었고, 가장 적은 종이 관찰된 분류군은 잠수성 오리류로 7종이었다. 또한 개체수는 관목성 산림조류가 721개체로 가장 적었으며, 수면성 오리류가 4,974개체로 가장 많았다. 각 하천별 조류분포를 보면 갑천은 총 13목 34과 114종 14,885개체(최대합계수), 유등천은 총 12목 30과 90종 6,642개체(최대합계수), 대전천은 총 11목 28과 69종 4,202개체(최대합계수)가 관찰되었다. 각 하천별로 조사된 종수, 개체수, 종다양도, 종풍부도, 단위면적당 밀도 등의 조류군집분석 지수에 의한 하천별 유사성을 분석한 결과, 갑천과 유등천 그리고 유등천과 대전천은 서로 유사한 특성을 가지는 하천이며, 갑천과 대전천은 서로 다른 특성을 갖는 하천으로 구분되었다. 또한 각 하천 구간별 상위 10위 우점종을 대상으로 유사성을 분석한 결과 각 하천의 상류는 산림성조류, 중류는 해오라기류와 수면성 오리류, 하류는 수면성 오리류와 일부 잠수성 오리류가 서식하였다. 이러한 결과는 대전 3대 하천에서 일부 구간이 자연형 하천으로 남아있는 갑천과 유등천이 도심지역인 대전천에 비하여 다양한 조류가 서식한다는 것을 의미하며, 각 하천의 상류와 하류가 조류의 서식에 적합하다는 것을 의미하므로 향 후 도시하천의 정비나 활용에 있어 자연성이 유지되는 구간에 대한 보전 및 관리가 필요하였다.

Keywords

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