표제지
목차
Abstract 12
제1장 서론 14
제1절 연구배경 14
제2절 연구 목적 및 필요성 18
제2장 연구사 19
제1절 낙동강 수계 미세조류 발생과 거동 19
제2절 미세조류의 다양한 생존전략 22
제3장 수층에서의 미세조류 생태 특성 30
제1절 서론 30
제2절 재료 및 방법 33
1. 조사지점 33
2. 수문기상 분석 35
3. 수환경 및 이화학적 수질 분석 35
4. 미세조류 조성 분석 37
5. 군집지수 분석 37
6. 통계분석 38
제3절 결과 39
1. 수문기상 39
2. 수환경 및 이화학적 수질 44
3. 미세조류 출현 현황 52
4. 통계분석 75
제4절 고찰 80
제4장 퇴적층에서의 미세조류 생태 특성 83
제1절 서론 83
제2절 재료 및 방법 85
1. 채집 방법 85
2. 퇴적물에서의 돌말류 표본 제작 및 분석 86
3. 퇴적물에서의 휴면포자(세포) 전처리 및 분석 87
4. 퇴적물 입도 분석 88
제3절 결과 89
1. 퇴적층에서의 돌말류 출현 현황 89
2. 퇴적층에서의 남조류 휴면포자 및 세포 출현 현황 112
제4절 고찰 124
제5장 미세조류 발생에 따른 수층과 퇴적층과의 연결성 128
제1절 서론 128
제2절 결과 131
제3절 고찰 151
제6장 결론 및 제언 154
참고문헌 159
부록 169
[부록 1] 출현종 리스트 170
[부록 2] 낙동강 상류 수계에서 출현한 주요 미세조류 196
국문초록 201
〈Table 3.1〉 Address, Latitude, Longitude, Depth of survey sites. 34
〈Table 3.2〉 Average of hydrological weather, water environment and water quality (maximum~minimum) from 2021 to 2022 at survey sites. 51
〈Table 3.3〉 Microalgae occurrence status at the study sites for 2 years. 53
〈Table 3.4〉 Celldensity by microalgae classification group at the study sites for 2 years. 55
〈Table 3.5〉 Cell density and number of species by month. 57
〈Table 3.6〉 Pearson correlation coefficients between phytoplankton density and meteoro-hydrological and water quality variables (*p〈0.05, **p〈0.01). 79
〈Table 4.1〉 Equipment and depth of sampling sites. 86
〈Table 4.2〉 Status of sedimentary layer samples surveyed for 2 years. 89
〈Table 4.3〉 Number of species of diatom by sedimentary layers for 3 sites for 2 years. 91
〈Table 4.4〉 Diatom density of diatom by sedimentary layers for 3 sites for 2 years. 93
〈Figure 3.1〉 Sampling sites of the Nakdong river upper water system (Yeonggang ~ Sangju weir upper stream). 34
〈Figure 3.2〉 Rainfall (a), water level (b), discharge (c) in upper steam of the Nakdong River from 2021 to 2022. 41
〈Figure 3.3〉 Changes in water environment (Water temperature, Dissolved Oxygen, pH and Electrical Conductivity) from 2021 to 2022 at survey sites. 44
〈Figure 3.4〉 Changes in water quality (Total Nitrogen, Nitrate nitrogen, Nitrite nitrogen, Ammonia nitrogen, Total Phosphorus, Phosphate phosphorus)... 47
〈Figure 3.5〉 Changes in Silica tetrahedron, Total Organic Carbon, Chlorophyll a and Biochemical Oxygen Demand from 2021 to 2022 at survey sites. 50
〈Figure 3.6〉 Cell density and species of microalgae at Site. 1. 58
〈Figure 3.7〉 Cell density and species of microalgae at Site. 2. 59
〈Figure 3.8〉 Cell density and species of microalgae at Site. 3. 60
〈Figure 3.9〉 Celldensity and ration of microalgae dominant and subdominant species in Younggang confluence point (Site .1). 62
〈Figure 3.10〉 Monthly variation of microalgae community indices in Younggang confluence point (Site .1). 63
〈Figure 3.11〉 Celldensity and ration of microalgae dominant and subdominant species in Gongdeokcheon confluence point (Site .2). 64
〈Figure 3.12〉 Monthly variation of microalgae community indices in Gongdeokcheon confluence point (Site .2). 65
〈Figure 3.13〉 Celldensity and ration of microalgae dominant and subdominant species in upstream point of Sangju weir (Site. 3). 66
〈Figure 3.14〉 Celldensity and ration of microalgae dominant and subdominant species in upstream point of Sangju weir (Site. 3). 67
〈Figure 3.15〉 Current status of the top 10 species of microalgae that appeared at Younggans confluence point (Site. 1). 68
〈Figure 3.16〉 Current status of the top 10 species of microalgae that appeared at Gongdeokcheon confluence point (Site .2). 69
〈Figure 3.17〉 Curren tstatus of the top 10 species of microalgae that appeared at upstream point of Sangju weir (Site. 3). 70
〈Figure 3.18〉 Monthly changes by microalgae classification group at sites. 74
〈Figure 3.19〉 Correlation analysis between water environments (bule; positive correlation, red; negative correlation). 76
〈Figure 3.20〉 Correlation analysis between water quality (bule; positive correlation, red; negative correlation). 76
〈Figure 3.21〉 Canonical correspondence analysis of microalgae and environmental factors (a; microalgae, b; sites, c; environmenta factors, d; correlations). 78
〈Figure 4.1〉 A slide sampling precess for viewing diatom in sediment. 87
〈Figure 4.2〉 Procedure of akinete extraction and preparation with the cored sediment. 88
〈Figure 4.3〉 Number of species and density of the diatom at sedimentary surface of Sites (A; site. 1, B; site. 2, C; site. 3) 96
〈Figure 4.4〉 Distribution of diatom species by sedimentary layers. 98
〈Figure 4.5〉 Distribution of diatom density by sedimentary layers. 99
〈Figure 4.6〉 Monthly status of diatom dominant and subdominant species in sedimentary surface layers at the Younggang confluence point (Site .1). 100
〈Figure 4.7〉 Monthly status of diatom dominant and subdominant species in sedimentary surface layer at the Gongdeokcheon confluence point (Site .2). 101
〈Figure 4.8〉 Monthly status of diatom dominant and subdominant species in sedimentary layer 10 cm at the Gongdeokcheon confluence point (Site .2). 102
〈Figure 4.9〉 Monthly status of diatom dominant and subdominant species in sedimentary layer 20 cm at the Gongdeokcheon confluence point (Site .2). 103
〈Figure 4.10〉 Monthly status of diatom dominant and subdominant species in sedimentary surface layer at the upstream point of Sangju weir (St. 3). 104
〈Figure 4.11〉 Monthly status of diatom dominant and subdominant species in sedimentary layer 10 cm at the upstream point of Sangju weir (St. 3). 105
〈Figure 4.12〉 Monthly status of diatom dominant and subdominant species in sedimentary layer 20 cm at the upstream point of Sangju weir (St. 3). 106
〈Figure 4.13〉 Current status of the top 10 species of diatom that appeared in the sedimentary surface layer at the Younggans confluence point (Site. 1). 107
〈Figure 4.14〉 Current status of the top 10 species of diatom that appeared in the sedimentary layer at the Gongdeokcheon confluence point (Site. 2). 108
〈Figure 4.15〉 Current status of the top 10 species of diatom that appeared in the sedimentary layer at the upstream point of Sangju weir (Site. 3). 110
〈Figure 4.16〉 Number of diatom species and density by sedimentary characterics. 111
〈Figure 4.17〉 Cell density of akinete and resting cells of cyanobacteria by sites. 114
〈Figure 4.18〉 Rate of appearance of akinete and resting cells of cyanobacteria by sites. 114
〈Figure 4.19〉 Monthly akinete and resting cell of cyanobacteria distribution in the sedimentary surface at the Younggans confluence point (Site. 1). 116
〈Figure 4.20〉 Monthly akinete and resting cell of cyanobacteria distribution in the sedimentary layers at the Gongdeokcheon confluence point (Site. 2). 118
〈Figure 4.21〉 Monthly akinete and resting cell of cyanobacteria distribution in the sedimentary layers at the upstream point of Sangju weir (Site. 3). 121
〈Figure 4.22〉 Distribution of akinete and resting cell of cyanobacteria by sedimentary characteric. 123
〈Figure 5.1〉 Comparison of monthly microalgae generation and water environment between water surface and sedimentray at the Younggans... 134
〈Figure 5.2〉 Comparison of monthly microalgae generation and water environment between water surface and sedimentray at the Gongdeokcheon... 137
〈Figure 5.3〉 Comparison of monthly microalgae generation and water environment between water surface and sedimentray at the upstream point of... 141
〈Figure 5.4〉 The appearance of the water surface and sediment by sites of Dolichospermum genus. 143
〈Figure 5.5〉 The appearance of the water surface and sediment by sites of Microcystis aeruginosa. 144
〈Figure 5.6〉 The appearance of the water surface and sediment by sites of Pseudostaurosira elliptica. 145
〈Figure 5.7〉 The appearance of the water surface and sediment by sites of Aulacoseira granulata. 146
〈Figure 5.8〉 Status of akinete and resting cells appearance of diatom (A) and cyanobacteria (B) for water surface and sedimentary layer (10~30 cm) at... 148
〈Figure 5.9〉 Status of akinete and resting cells appearance of diatom (A) and cyanobacteria (B) for water surface and sedimentary layer (10~30 cm) at... 150