표제지
Abstract
목차
I. 서론 10
II. 재료 및 방법 12
1. 조사방법 12
1) 조사정점 및 조사시기 12
2) 시료채취 13
2. 분석방법 13
1) 수질 환경 13
2) 저질환경 14
3) 저서생물분포특성 및 군집구조 16
4) 건강도 지수 17
5) 통계분석 19
III. 결과 20
1. 수질 환경 20
2. 저질 환경 27
1) 표층퇴적물 입도 27
2) 강열감량(Ignition Loss, IL) 30
3) 함수율(Water Content, W·C) 31
4) 총 유기탄소(Total organic carbon, TOC) 32
3. 저서생물분포 33
1) 출현종수 33
2) 서식밀도 35
3) 생체량 37
4) 우점종 39
4. 군집구조 43
1) 생태지수 43
2) 유사도 45
5. 상관분석 48
6. 건강도지수 51
1) 수질평가지수(WQI) 51
2) 저서생물지수(AMBI) 52
3) 건강성 요인들과의 상관관계 54
IV. 고찰 56
V. 결론 61
참고문헌 63
Table 1. Latitude and longitudes of the sampling sites at Muan bay 13
Table 2. Range system and grades of WQI 17
Table 3. Range system and grades of AMBI 18
Table 4. Sediment parameters at different stations in Muan Bay (gmS:... 28
Table 5. Large benthic animals distributed in the subtidal zone of Muan bay at summer 40
Table 6. Large benthic animals distributed in the subtidal zone of Muan bay at winter 41
Table 7. Dominant species 42
Table 8. Seasonal variation of ecological indices 44
Table 9. Correlation analysis at summer 49
Table 10. Correlation analysis at winter 50
Table 11. WQI at different station in Muan Bay 51
Table 12. Values of AMBI 52
Table 13. Correlation analysis between TOC, WQI, and AMBI 54
Table 14. The mean grain size(Mz) and the average of ignition loss(IL),... 57
Fig. 1. Investigation Area Vertex 12
Fig. 2. Seasonal changes of Depth of water content 22
Fig. 3. Seasonal changes of Water temperature content 22
Fig. 4. Seasonal changes of Salinity content 23
Fig. 5. Seasonal changes of Transparency content 23
Fig. 6. Seasonal changes of DO content 24
Fig. 7. Seasonal changes of pH content 24
Fig. 8. Seasonal changes of DIN content 25
Fig. 9. Seasonal changes of DIP content 25
Fig. 10. Seasonal changes of Chl-a content 26
Fig. 11. Triangle diagram of sediment distribution(A: summer B: winter) 29
Fig. 12. Seasonal changes of IL content 30
Fig. 13. Seasonal changes of water content 31
Fig. 14. Seasonal changes of TOC content 32
Fig. 15. Number of species (A: summer B: winter) 34
Fig. 16. Abundance (A: summer B: winter) 36
Fig. 17. Biomass(A: summer B: winter) 38
Fig. 18. Similarity dendrogram determined by combined cluster analysis at summer 46
Fig. 19. Similarity dendrogram determined by combined cluster analysis at winter 47
Fig. 20. Values of AMBI(A:summer B:winter) 53
Fig. 21. Spatial distribution of TOC, WQI, and AMBI (A:summer B:winter) 55