표제지
제출문
요약문
SUMMARY
List of Figure
List of Table
칼라
목차
제1장 서론 45
제2장 해류 및 해수순환 49
제1절 서론 51
제2절 관측개요 및 자료처리 방법 54
2.1. CTD 자료 54
2.2. ADCP 자료 56
제3절 남해 해황 및 해수수송량 변동 57
3.1. 1997년 3월 CTD 관측 결과 57
3.2. 1997년 3월 ADCP 왕복관측 결과 60
3.3. 1997년 9월 CTD 관측 결과 (국립해양조사원과 공동조사 결과) 64
3.4. 1997년 9월 ADCP 왕복관측 결과 (국립해양조사원과 공동조사 결과) 67
3.5. 해수면차에의한 수송량 변화 68
제4절 남해 해수순환 모델 71
4.1. 모델 71
4.2. 모델 적용 74
4.3. 모델 결과 75
4.4. 유출유 이동-확산 실험 86
제5절 결론 및 토의 89
Reference 92
제3장 혐기성 내만환경 179
제1절 서론 181
제2절 기존자료 분석에 의한 해역의 오염도와 특성 파악 182
제3절 중금속 원소의 거동 195
제4절 특성별 연구해역 설정 200
제5절 물질교환 모델 가설 도출 201
Reference 204
제4장 대륙붕 화학물질 순환 및 수지 211
제1절 서론 213
제2절 재료 및 방법 214
제3절 현장조사 결과 221
3.1. 대륙붕 해양화학성분 분포 특성 221
3.2. 제주해협을 통과하는 화학물질 플럭스 233
3.3. 표층수에서의 유기물 분포 특성 235
3.4. 해저퇴적물에서의 유기물 분포 특성 238
3.5. 해저 퇴적물 축적율 244
3.6. 생물기원 원소 해저 축적율 245
3.7. 시계열 해양과정 관측 정점 설치 운영결과 246
3.8. 일차 생산력 250
3.9. 표층수중 Ra 동위체 (228 Ra, 226 Ra) 방사능 분포(이미지참조) 257
3.10. 남해 대기분진 침적물 연속 채취 관측소 운영 260
제4절 결론 263
Reference[원문불량;p.308] 266
제5장 저서생물 생화학 특성 323
제1절 서론 325
제2절 재료 및 방법 326
2.1. 해수 및 해저 퇴적물에서 균주의 분리 326
2.2. 해수 및 해저퇴적물로부터 지방 성분의 분리 328
2.3. 유용물질 생산 후보 생물의 분석 332
2.4. Biomarker로서의 steroid 화합물의 분석 기법 구축 333
제3절 실험결과 334
3.1. 일반 세균 및 방선균의 분리 및 균주 보존 334
3.2. 해수 시료에서 lipid 추출 및 분석 335
3.3. 해저 퇴적물에서 lipid 추출 및 분석 337
3.4. 저서생물의 지방산 조성 및 유용성분 정제 338
Reference 342
제6장 퇴적물 분포 363
제1절 서론 365
제2절 연구 방법 366
2.1. 퇴적구조 366
2.2. 입도분석 366
2.3. 함수율 367
2.4. 유기물함량 367
2.5. 탄산칼슘함량 367
제3절 결과 367
제4절 토론 368
Reference 372
제7장 치자어와 어류군집 377
제1절 서론 379
1.1. 제주도 주변 해역의 치자어 군집에 관한 연구 -가을철-376 379
1.2. 동해남부해역의 치자어 군집에 관한 연구 379
제2절 연구방법 380
2.1. 제주도 주변 해역의 치자어 군집에 관한 연구 -가을철- 380
2.2. 동해남부해역의 치자어 군집에 관한 연구 381
제3절 결과 및 고찰 382
3.1. 제주도 주변 해역의 치자어 군집에 관한 연구 -가을철- 382
3.2. 동해남부해역의 치자어 군집에 관한 연구 -여름철- 387
Reference 394
제8장 결론 423
부록 427
부록 1. 1997년 3월 춘계 해양조사 일지 429
부록 2. 1997년 9월 추계 해양조사 일지 435
[title page etc.]
Contents
Chapter I. Introduction 45
Chapter II. Current and circulation 49
1. Introduction 51
2. Outline of the survey and the data processing methods 54
a. CTD data 54
b. ADCP data 56
3. Oceanographic conditions and variation of volume transport in the South Sea 57
a. CTD observation results in March 1997 57
b. Repeated ADCP observation results in March 1997 60
c. CTD observation results in September 1997 64
d. Repeated ADCP observation results in September 1997 67
e. Variation of volume transport by the sea level difference 68
4. Circulation model of the South Sea 71
a. Model 71
b. Model configuration 74
c. Model results 75
d. Advection-diffusion experiments of oil spill 86
5. Conclusion and Discussion 89
Chapter III. Anaerobic coastal inlets 179
1. Introduction 181
2. Overview on the characteristics(characterictics) and contamination of coastal inlet 182
3. Behavior of trace elements in some coastal inlets 195
4. Selection of study area by characteristics of inlets 200
5. Hypothesis of material exchange model 201
Chapter IV. Shelf Biogeochemistry 211
1. Introduction 213
2. Material and methods 214
3. Results and discussion(discusstion) 221
a. The distributional characteristics of chemical components in the shelf 221
b. Along-strait material flux in the Cheju Strait 233
c. The distributional characteristics of organic matter in the surface water 235
d. The distributional characteristics of organic matter in the sediment 238
e. 210Pb(이미지참조)-derived sedimentation rate 244
f. The accumulation rate of biogenic elements to the bottom 245
g. Time-series ocean process station 246
h. Primary productivity 250
i. The distribution of Ra isotope activity in the surface water 257
j. Time series aerosol collection at coastal fixed station 260
4. Conclusion 263
Chapter V. Biochemical characters of benthic organisms 323
1. Introduction 325
2. Materials and Methods 326
2.1. Isolation of bacterial strains from sea water and sediment 326
2.2. Isolation of lipids from sea water 328
2.3. Analysis of marine organisms for production of biomedically available fatty acids 332
2.4. Establishment of analytical methods of steroids as environmental biomarkers 333
3. Results 334
3.1. Isolation and storage of strains of eubacteria and actinomycetes 334
3.2. Isolation and analysis of lipids from sea water 335
3.3. Isolation and analysis of lipids from marine sediment 337
3.4. Analysis of fatty acid composition of benthic organisms 338
Chapter VI. Distribution of sediments and change in sediment environment 363
1. Introduction 365
2. Method 366
a. Sedimentary structures 366
b. Grain size analysis 366
c. Porosity 367
d. Organic carbon content 367
e. Calcium-carbonate content 367
3. Surface sediment distribution 367
4. Results and discussion 368
Chapter VII. Fish community 377
1. Introduction 379
a. Studies on the fish larvae community in the sea around Cheju Island in autumn 379
b. The larval fish community structure in the southern part of the East Sea in summer 379
2. Material and methods 380
a. Studies on the fish larvae community in the sea around Cheju Island in autumn 380
b. The larval fish community structure in the southern part of the East Sea in summer 381
3. Results and discussion 382
a. Studies on the fish larvae community in the sea around Cheju Island in autumn 382
b. The larval fish community structure in the southern part of the East Sea in summer 387
Chapter 8. Conclusion 423
Appendices 427
1. Log sheet of investigation in March 1997 429
2. Log sheet of investigation in October 1997 435
Table 2.1. Outline of CTD observations 54
Table 2.2. Outline of vessel-mounted ADCP observations 56
Table 2.3. Comparison between Volume transports and sea level differences of the Cheju Strait. 71
Table 2.4. Comparison of observed and calculated amplitude (cm) and phase (degree referred to Greenwich) for M2 tide. 77
Table 2.5. Comparison of observed and calculated amplitude (cm) and phase (degree referred to Greenwich) for S2 tide. 78
Table 2.6. Comparison of observed and calculated amplitude (cm) and phase (degree referred to Greenwich) for K1 tide. 79
Table 2.7. Comparison of observed and calculated amplitude (cm) and phase (degree referred to Greenwich) for O1 tide. 80
Table 2.8. Description of measurement stations of time-series data used for model verification. 81
Table 2.9. Spatial mean ARE and ME between tide models with boundary forcing using surface elevation and using tidal velocity. 85
Table 3.1. BOD load to major estuaries (unit : kg/day / rate(%)) 184
Table 3.2. T-N load to major estuaries (unit : kg/day / rate(%)) 185
Table 3.3. COD and TS in the sediments of coastal bays. 186
Table 3.4. Annual trends of seawater quality in Kwangyang Bay. 189
Table 3.5. Annual trends of seawater quality in Kosung/Jaran Bay 190
Table 3.6. Annual trends of seawater quality in Kangjin Bay. 190
Table 3.7. Annual trends of seawater quality in Masan Bay. 193
Table 3.8. Heavy metal contents in the surface waters of Danghang Bay in May 1997. 196
Table 3.9. Heavy metal contents in the surface waters of Chindong Bay in May 1997. 196
Table 3.10. Heavy metal contents in the surface waters of Sachon Bay in May 1997. 197
Table 3.11. Heavy metal contents in the surface waters of Danghang Bay in August 1997. 197
Table 3.12. Heavy metal contents in the surface waters of Chindong Bay in August 1997. 198
Table 3.13. Heavy metal contents in the surface waters of Sachon Bay in August 1997. 199
Table 3.14. Heavy metal contents in the surface waters of Kwangyang Bay in August 1997(㎍/l) 199
Table 4.1. Location of stations in March, 1997. 215
Table 4.2. Location of stations in October, 1997. 216
Table 4.3. Water column of biogeochemistry in the South Sea during March 19-27, 1997. 222
Table 4.4. Water column of biogeochemistry in the South Sea during September 27-October 1, 1997. 228
Table 4.5. Along-strait material fluxes in the Cheju Strait in 1997 235
Table 4.6. The chemical composition of organic matter in the surface water in the South Sea during March, 19-27. 236
Table 4.7. The chemical composition of organic matter in the surface water in the South Sea during September 27 - October 1, 1997 237
Table 4.8. The chemical composition in the sediment at station A10 (March, 1997). 240
Table 4.9. The chemical composition in the sediment in the South Sea of Korea (September, 1997). 241
Table 4.10. 210Pb(이미지참조)-derived sedimentation rates and sediment parameters in the South Sea of Korea. 244
Table 4.11. The relative importance of sediment mixing to the incorporation rate of biogenic matter into the sediment. 245
Table 4.12. Total mass flux of settling particle at station JM 248
Table 4.13. Mass flux of settling particle at station JM. 249
Table 4.14. Composition of biogenic matter in the settling particle at station JM. 251
Table 4.15. Primary productivity during the South Sea 9703 Cruise. 252
Table 4.16. Primary productivity during the South Sea 9709 Cruise. 254
Table 4.17. Radium isotope concentration and 228Ra/226Ra ratio of surface water in the South Sea of Korea.(이미지참조) 260
Table 4.18. The atmospheric dust fall flux at the southern Island of Korea. 260
Table 4.19. Metal composition and flux of atmospheric dust fall at the southern Island(JM) and western coast(Ansan) of Korea. 262
Table 5.1. Condition for Gas chromatography analysis for fatty acid methyl ester and hydrocarbon. 331
Table 5.2. Isolation of bacterial strains with substrate digestion activities. 334
Table 5.3. Amount of extractable lipid from sea water collected at Oct. 1997 336
Table 5.4. Fatty acid composition of Polychaete Perinereis aibuhitensis and hydroid Solanderia secunda 341
Table 7.1. Mean abundance(N : no./1,000㎥), relative percentage(%), and frequency(F) of larval fish at each station group. 399
Table 7.2. Descriptive statistics for environmental variables of 43 sampling stations in the study area, and results of canonical correlation analysis of species association obtained by cluster analysis.... 402
Table 7.3. Classification summary derived from discriminant model used to predict species association group in the study area, based on five environmental variables. 403
Table 7.4. Mean abundance (N : no./10㎡), relative percentage(%), and frequency(F) of larval fish at each station group in August, 1993 404
Table 7.5. Descriptive statistics for environmental variables of 46 sampling stations in the study area and results of canonical correlation analysis of species association obtained by cluster analysis.... 408
Table 7.6. Classification summary from discriminant model used to predict species association group in the study area, based nine environmental variables. 409
Fig.2.1. Bottom topography of the South Sea. In here, black circles denote the observation station of tidal elevation and black squares denote the observation station of tidal current for model verification. 95
Fig.2.2. Location map of CTD stations and ADCP tracks in March, 1997. 96
Fig.2.3. Location map of CTD stations and ADCP tracks in September, 1997. 97
Fig.2.4. Flow chart of CTD data processing. 98
Fig.2.5. T-S Diagram in March, 1997. 99
Fig.2.6. T-S Diagram for each observation line in March, 1997. 100
Fig.2.7. Vertical profiles of temperature, salinity and density at each station. 101
Fig.2.8. Vertical distributions of temperature, salinity, density in the Cheju Strait 109
Fig.2.9. Vertical distributions of temperature, salinity, density along east of Chejudo 110
Fig.2.10. Sea surface temperature in March, 1997.(제목없음) 111
Fig.2.11. Vertical distributions of temperature, salinity, density along south of Namhaedo 112
Fig.2.12. Comparison between the repeated ADCP observation time of the Cheju Strait and the sea surface elevation of the Cheju port during the observation period.... 113
Fig.2.13. Time plot of current observed by ADCP at 31m depth in the Cheju Strait 114
Fig.2.14. Vertical vector plot of detided current in the Cheju Strait (Chejudo-Jindo) in March, 1997. 115
Fig.2.15. Vertical distributions of east-west and north-south component of current in the Cheju Strait (Chejudo-Jindo) in March, 1997. 116
Fig.2.16. Vertical distributions of east-west component and geostrophic current in the Cheju Strait. 117
Fig.2.17. Comparison between the repeated ADCP observation time east of the Cheju and the sea surface elevation of the Cheju port during the observation period.... 118
Fig.2.18. Vertical vector plot of detided current east of the Cheju in March, 1997. 119
Fig.2.19. Vertical distributions of along-component and cross-component of current east of the Cheju in March, 1997. 120
Fig.2.20. Vertical distributions of cross-component and geostrophic current east of the Cheju. 121
Fig.2.21. Sea surface temperature in September, 1997. 122
Fig.2.22. T-S Diagram in September, 1997. 123
Fig.2.23. T-S Diagram for each observation line in September, 1997 124
Fig.2.24. Vertical profiles of temperature, salinity and density at each station. 125
Fig.2.25. Vertical distributions of temperature, salinity, density of the Cheju Strait 134
Fig.2.26. Vertical distributions of temperature, salinity, density of Chejudo- Tsushima section 135
Fig.2.27. Vertical distributions of temperature, salinity, density along south of Namhaedo 136
Fig.2.28. T-S Diagram of the Korea Strait in October, 1997. 137
Fig.2.29. Vertical profiles of temperature, salinity and density at each station of the Korea Strait. 138
Fig.2.30. Vertical distributions of temperature, salinity, density of the Korea Strait 139
Fig.2.31. Time plot of current observed by ADCP at 31m depth in the Cheju Strait 140
Fig.2.32. Vertical vector plot of detided current of the Cheju Strait in September, 1997. 141
Fig.2.33. Vertical distributions of east-west and north-south component of current of the Cheju Strait in September, 1997. 142
Fig.2.34. Vertical distributions of east-west component and geostrophic current east of the Cheju Strait. 143
Fig.2.35. Vertical vector plot of detided current of the Korea Strait in October, 1997. 144
Fig.2.36. Vertical distributions of along- and cross-component of current of the Korea Strait in October, 1997. 145
Fig.2.37. Vertical distributions of cross-component of current and geostrophic current in the Korea Strait. 146
Fig.2.38. Time variations of monthly mean sea surface elevations in the Cheju port and the Chujado. 147
Fig.2.39. Time variation of monthly mean sea level difference between the Chejudo and the Chujado. 148
Fig.2.40. Monthly variation of sea level difference between the Chejudo and the Chujado. 150
Fig.2.41. Comparison of sea level difference and the volume transport of the Cheju Strait. 153
Fig.2.42. Model grid configuration and observation transect for ADCP survey. 154
Fig.2.43. Locations of 37 tidal stations used in model calibration. 155
Fig.2.44. Computed elevation and velocity at Mijo-Hang (station 16 in Fig. 2-43). 156
Fig.2.45. Comparison between the observations and the model results in calibration. 162
Fig.2.46. Model verification results for surface elevation at station T1 to T5 in Fig. 2-1 (+: data, -: model). 163
Fig.2.47. Model verification results for tidal velocity at station C1 in Fig. 2-1 164
Fig.2.48. Model verification results for tidal velocity at station C2 in Fig. 2-1. 165
Fig.2.49. Tidal current ellipse for M2 tide calculated by model. 166
Fig.2.50. Computed tidal current field every 2 hours. 167
Fig.2.51. Tidal residual current field. 173
Fig.2.52. Elevation and velocity calculated by mean current model at Gwangdo (station 24 in Fig. 2-43). 174
Fig.3.1. Occurrences of red tide blooms in 1995. 207
Fig.3.2. Sampling stations in Danghang/Jindong Bay. 208
Fig.3.3. Sampling stations in Sachon Bay. 209
Fig.3.4. Sampling station in Kwangyang Bay. 210
Fig.4.1. Location of sampling stations in the South Sea (March, 1997). 270
Fig.4.2. Location of sampling stations in the South Sea (September, 1997). 270
Fig.4.3. The vertical distribution of (a) pH, (b) SS, (c) DO, (d) Saturated DO, (e) NH₄+(NH+) (f) NO₃-(NO3-), (g) PO₄³-, (h) Si(OH)₄, (i) Chlorophyll-a along section A in March 1997.(이미지참조) 271
Fig.4.4. The vertical distribution of (a) pH, (b) SS, (c) DO, (d) Saturated DO, (e) NH₄+(NH+) (f) NO₃-(NO3-), (g) PO₄³-, (h) Si(OH)₄, (i) Chlorophyll-a along section B in March 1997.(이미지참조) 274
Fig.4.5. The vertical distribution of (a) pH, (b) SS, (c) DO, (d) Saturated DO, (e) NH₄+(NH+) (f) NO₃-(NO3-), (g) PO₄³-, (h) Si(OH)₄, (i) Chlorophyll-a along section C in March 1997.(이미지참조) 277
Fig.4.6. The vertical distribution of (a) pH, (b) SS, (c) DO, (d) Saturated DO, (e) NH₄+(NH+) (f) NO₃-, (g) PO₄³-, (h) Si(OH)₄, (i) Chlorophyll-a along section A in September 1997.(이미지참조) 280
Fig.4.7. The vertical distribution of (a) pH, (b) SS, (c) DO, (d) Saturated DO, (e) NH₄+(NH+) (f) NO₃-, (g) PO₄³-, (h) Si(OH)₄, (i) Chlorophyll-a along section B in September 1997.(이미지참조) 283
Fig.4.8. The vertical distribution of (a) pH, (b) SS, (c) DO, (d) Saturated DO, (e) NH₄+(NH+) (f) NO₃-, (g) PO₄³-, (h) Si(OH)₄, (i) Chlorophyll-a along section C in September 1997.(이미지참조) 286
Fig.4.9. The along-strait material fluxes per unit area (flux-density) of (a) SS, (b) DO, (c) NH₄+(NH+) (d) NO₃-, (e) PO₄³-, (f) Si(OH)₄ in the Cheju Strait calculated by multiplying mean current speed by concentration in March 1997. 289
Fig.4.10. The along-strait material fluxes per unit area (flux-density) of (a) SS, (b) DO, (c) NH₄+ (NH+) (d) NO₃-, (e) PO₄³-, (f) Si(OH)₄ in the Cheju Strait calculated by multiplying mean current speed by concentration in September 1997. 292
Fig.4.11. The relationships between salinity and (a) particulate organic carbon (㎍/l), (b) particulate organic nitrogen (㎍/l), (c) C/N in the surface water (March 1997). 295
Fig.4.12. The relationships between chlorophyll-a (㎍/l) and particulate organic carbon (㎍/l) in the surface water (March 1997). 296
Fig.4.13. The relationships between suspended sediment (㎍/l) and particulate organic carbon (㎍/l) in the surface water (March 1997). 296
Fig.4.14. The relationships between salinity and (a) particulate organic carbon (㎍/l), (b) particulate organic nitrogen (㎍/l), (c) biogenic Si (㎍/l) in the surface water (September 1997). 297
Fig.4.15. The relationships between chlorophyll-a (㎍/l) and particulate organic carbon (㎍/l) in the surface water (September 1997). 298
Fig.4.16. The relationships between suspended sediments (㎎/l) and particulate organic carbon (㎍/l) in the surface water (September 1997). 298
Fig.4.17. The relationships between chlorophyll-a (㎍/l) and biogenic Si (㎍/l) in the surface water (September 1997). 299
Fig.4.18. The relationships between suspended sediments (㎎/l) and biogenic Si (㎍/l) in the surface water (September 1997). 299
Fig.4.19. Depth distribution of (a) organic carbon, (b) organic nitrogen, (c) biogenic silica in the sediment from station A10 in March 1997. 300
Fig.4.20. Depth distribution of (a) organic carbon, (b) organic nitrogen, (c) biogenic silica in the sediment from station JM in September 1997. 301
Fig.4.21. Depth distribution of (a) organic carbon, (b) organic nitrogen, (c) biogenic silica in the sediment from station SC1 in September 1997. 302
Fig.4.22. Depth distribution of (a) organic carbon, (b) organic nitrogen, (c) biogenic silica in the sediment from station SC2 in September 1997. 303
Fig.4.23. Depth distribution of excess 210Pb(이미지참조) from station A10 in March 1997. 304
Fig.4.24. Depth distribution of excess 210Pb(이미지참조) from each stations in September 1997. (a) St. JM, (b) St. SC1, (c) St. SC2 305
Fig.4.25. An overall view of a Mark 7G-21 sediment trap. 306
Fig.4.26. Total mass flux of settling particle at station JM. 307
Fig.4.27. Biogenic, lithogenic mass flux and biogenic composition of settling particle at station JM.[원문불량;p.308] 308
Fig.4.28. Relationships between settling component in station JM 309
Fig.4.29. Vertical distribution of temperature, nitrate, primary productivity, chlorophyll a concentration during March, 1997. 310
Fig.4.30. Vertical distribution of temperature, nitrate, primary productivity, chlorophyll a concentration during September, 1997. 312
Fig.4.31. The correlation between salinity and temperature in the surface water of the South Sea of Korea. 316
Fig.4.32. Plots of 226Ra(이미지참조) versus salinity in the surface waters of the South Sea of Korea. 317
Fig.4.33. Plots of 228Ra(이미지참조) versus salinity in the surface waters of the South Sea of Korea. 318
Fig.4.34. Correlation between 226Ra and 228Ra in the surface waters of the South Sea of Korea.(이미지참조) 319
Fig.4.35. Plots of 228Ra/226Ra ratios versus salinity in the surface waters of the South Sea of Korea.(이미지참조) 320
Fig.4.36. Enrichment factors(EF) of metals relative to Al and metal flux of atmospheric dust fall at the southern Island(JM) and western coast(Ansan) of Korea. 321
Fig.5.1. NMR spectrum of Lipid extracted from sea water with SPE method. 343
Fig.5.2. GC chromatogram of fatty acid methyl ester in sea water. 344
Fig.5.3. GC chromatogram of hydrocarbon in sea water. 352
Fig.5.4. GC chromatogram of fatty acid methyl ester extracted from sediment (A) surface layer sediment, (B) 30 cm depth sample 358
Fig.5.5. GC chromatogram of hydrocarbon extracted from sediment (A) surface layer sediment, (B) 30 cm depth sample 359
Fig.5.6. (A) TLC chromatogram of total lipids from Polychaete Perinereis aibuhitensis, (B) TLC chromatogram of fractions separated by silica flash column chromatography 360
Fig.5.7. (A) GC chromatogram of total Fatty acid of Polychaete Perinereis aibuhitensis, (B) purified Eicosapentaenoic acid (EPA, C20:5), and (C) NMR spectrum of purified EPA. 361
Fig.5.8. GC chromatogram of total Fatty acid of hydroid Solanderia secunda (A), producing Eicosapentaenoic acid (EPA, C20:5), and Docosahexaenoic acid (DHA, C22:6), and NMR spectrum (B). 362
Fig.6.1. Surface sedimentary distribution and boxcore location in the South Sea of Korea. 374
Fig.6.2. (a) photograph, (b) x-ray radiograph and (c) core log and facies of boxcore SS 9703-A10 375
Fig.6.3. Diagrams of total composition, sorting(sorting), mean grain-size, skewness, kurtosis, water content(%), organic content(%) and CaCO3 content of boxcore SS9703-A10. 376
Fig.7.1. Map showing the sampling stations in the sea around Cheju Island 410
Fig.7.2. Map showing the sampling stations in the southern part of the East Sea 411
Fig.7.3. Distribution of the total fish larvae abundance in the study area 412
Fig.7.4. Geographic distribution of 43 sampling stations classified into two groups by discriminant analysis using the five environmental variables(Table 7.2).... 413
Fig.7.5. Distribution of the dominant fish larvae in the study area. 414
Fig.7.6. Environmental conditions (temperature, salinity, dissolved oxygen, and chlorophyll a) in the study area(cited from KORDI, 1987). 415
Fig.7.7. Distribution of the number of larval fish species captured at each stations in the study area. 416
Fig.7.8. Distribution of the total fish larvae abundance in the study area. 417
Fig.7.9. Distribution of the dominant fish larvae in the study area. 418
Fig.7.10. Geographic distribution of 47 sampling stations classified into Group I and II based on the species association group (dark circles : Group I, dark square : Group II) using 76 larval fish species (Table 7.4). 419
Fig.7.11. Rarefaction curves for each station groups in the study area 420
Fig.7.12. Distribution of four environmental variables in the surface, 30 m and 50 m depth layer in the study area(cited from KORDI, 1994). 421