저수지의 환경요인이 월동수조류의 개체수와 종수에 미치는 영향 = Environmental Factors Affecting Wintering Waterbird Abundance and Species Richness in Reservoirs

국문 초록 (Abstract)

본 연구는 저수지의 환경요인들과 월동수조류의 개체수와 종수간 상호관계를 분석하고 이를 통해 수조류 서식지로서의 효과적인 관리방안에 대해 논하고자 2008년 11월부터 2009년 3월까지 충청남도 서해안 일대의 저수지 21곳에서 수행되었다. 저수지의 환경요인 중 개체수와 종수의 증가에 가장 큰 영향을 미치는 환경요인은 저수지의 면적이었다(각각 Y＝1.884＋1.583X, R²＝ 0.584; Y＝6.948＋13.225X, R²＝0.504). 한편, 둘레복잡도지수가 커질수록 개체수와 종수가 감소하여(Y＝3.935－2.654X, R²＝0.318; Y＝3.682－2.483X, R²＝0.278) 같은 면적일지라도 형태에 따른 영향이 있음을 알 수 있었다. 식생의 면적 또한 종수의 증가에 영향을 미쳤으며(Y＝－0.470 ＋14.006X, R²＝0.236), 영양 물질(TP, Chl-a)의 농도와 저수지의 조성 후 기간은 영향을 미치지 않았다. 결과적으로, 우리나라 저수지를 이용하는 월동수조류의 개체수와 종수는 저수지의 면적 및 형태 등의 지형 요인과 수생식물의 면적에 많은 영향을 받는 것으로 판단된다.

다국어 초록 (Multilingual Abstract)

This study was conducted to look at the relationship between environmental factors of reservoir and abundance, species richness of wintering waterbird at 21 reservoirs located in Chungcheongnamdo, Korea from November 2008 to March 2009. Reservoir area was the most powerful factor which affects on increasing of waterbird abundance and species richness(Y＝1.884＋1.583X, R²＝0.584; Y＝6.948＋13.225X, R²＝0.504, respectively). Perimeter complexity was negatively related with abundance and species richness(Y＝3.935－2.654X, R²＝0.318; Y＝3.682－2.483X, R²＝0.278, respectively), implying that reservoir shape influences them in given the same area. Vegetation cover affected on increasing of species richness (Y＝－0.470＋14.006X, R²＝0.236). On the other hand, concentration of trophic factors(TP, Chl-a) and reservoir age didn't influence on abundance and species richness. Consequently, abundance and species richness of waterbirds which overwintered in reservoirs were more affected by morphological factors and area of vegetation cover than by other factors.

목차 (Table of Contents)

• 서론
• 연구지역 및 방법
• 결과 및 고찰
• 감사의 글
• 인용문헌
• Appendix

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