제주도 한림항과 성산항 일대 식물플랑크톤의 군집동태

이준백,좌종헌 濟州大學校海洋硏究所 1990 해양과환경연구소 연구논문집 Vol.14 No.-

제주도 동ㆍ서 연안역의 식물플랑크톤 군집동태 및 환경요인과의 상관관계를 비교 파악하기위해 한림항과 성산항 주변해역의 정점을 중심으로 1989년 8월부터 1990년 5월까지 매월 조사를 실시하였다. 두 항만 해역에서 공통으로 출현한 종의 비율은 49.2%로써 종조성에서 차이를 보였으나 Skeletonema costatum, Chaetoceros socialis 등이 두 해역에서 공통적으로 춘계에 75% 이상의 높은 점유율로 우점하고 있었다. 현종량은 한림항에서3,277∼1,952,809, 성산항에서 6,458∼1,799,870 cells/ℓ분포를 보였지만, 대중식의 양상은 한림항은 춘계에 성산항은 추계에 발생하여 계절적으로 다른 양상을 보였다. C-4 법에 의한 일일 기초생산량은 한림항이 0.768∼3.119, 성산항이 0.533-5.889 ㎎ C/㎥/day로 성산항이 높았으며 탄소동화율도 성산항이 한림항 보다 높은 값을 나타내었다. 식물플랑크톤과 환경요인과의 상관관계는 한림항은 수온, 용존산소, 총질산-질소(r²=0.467), 그리고 성산항은 염분, 용존산소, 총인산-(r²=0.492)의 영향을 받고 있었다. 요인분석에 의한 두 해역의 생태적 특성은 모두 수온의 증가 및 영양염류의 유입과 그로인한 식물플랑크톤의 증가로 나타났다. The phytoplankton dynamics and correlations between phytoplankton community and environmental factors in the western and eastern area of Cheju Island have been monthly investigated at eight stations of Hanrim harbor and nine stations of Songsan harbor from August,1989 to May, 1990. The ratio of common species occurred at two areas was 49.2%, showing the diffrence in species composition. The dominant species, however, of Skeletonema costatum and Chaetoceros socialis, comprised more than 75% commonly at two areas in spring season. Phytoplankton standing crops have showed the ranges of 3,277∼1,952,809 and 6,458-1,799,870 cells/ℓ at Hanrim and Songsan respectively, blooming in sping at Hanrim and in fall at Songsan. Daily primary production using C-14 method ranged 0.768∼3.119 and 0.533-5.889 ㎎ C/㎥/day at Hanrim and Songsan respectively, and carbon assimilation number at Songsan has showed higher than at Hanrim as well. The correlations between phytoplankton and environmental factors suggest that water temperature, dissolved oxygen and total nitrate-nitrogen affected the phytolankton standing crops(r²=0.467) at Hanrim, whereas salinity, dissolved oxygen and total phosphate-phosphorous affected it(r²=0.492) at Songsan. From factor analysis, it is speculated that the ecological characteristic of two survey area is phytoplankton blooming by the increase of water temperature and the inflow of nutrients.

제주도 북방 탑동연안해역 식물플랑크톤 군집의 종조성과 동태

이준백 제주대학교 해양연구소 1989 해양자원연구소연구보고 Vol.13 No.-

The structures and dynamics of phytoplankton community have been investigated at Tap-dong costal area in the northern part of Cheju Island during the period from November, 1987 to April, 1989. During the study period. a total of 123 taxa were identified, comprising 40 genera. 86 spp. of diatoms and 13 genera, 37 spp. of dinoflagellates. Among them, 8 taxa are new to Korean Waters. Kuroshio indicator species occurred mainly from November to February. and more oceanic species are comprised than in the other Korean Waters. It is suggested from the view point of the species composition of phytoplankton community that Kuroshio waters affect the Cheju Island in winter season and the other oceanic waters also flow in the study area. The standing crops varied from 1,892 to 535. 247 cells/ℓ : increasing in spring and fall. and decreasing in summer and winter. Total standing crops fluctuated by diatom's variation. not by dinoflagellate's. Seven dominant species of diatom were selected, and successively predominant as follows ; Rhizosolenia alata. Thalassiosira eccentrica. Chaetoeeros debilis, Dilylum brightweilii. Thalassiosira hyalina, Guinardia flaccida, Chaeloceros socialis. Species diversity index are the highest of 4.6266 in November, 1988, and low in August, 1988 and April, 1989. ranging 1.0491~1.2938. It reveals that the phytoplankton community showed the most stability in fall and the unstability in spring and summer. The correlation between total standing crops and environmental parameters means that water temperature and salinity affected the phytoplankton dynamics for 46.l%(R^(2)=0.461), but the other parameters, such as nutrients, didn't affect it.

한국 남해ㆍ동해 및 동중국해 유종섬모충류의 분류학적 기재

이준백,김요혜 제주대학교 해양연구소 2000 해양과환경연구소 연구논문집 Vol.24 No.-

A total of 40 tintinnids were identified and described taxonomically based on samples collected in the southern Korean waters, the East Sea (the Japan Sea) and the East China Sea from July 1998 to June 2000. We also discussed the characteristics of ecological distribution of tintinnids.

제주항 주변 식물플랑크톤의 계절변화

이준백,신범 제주대학교 해양연구소 2000 해양과환경연구소 연구논문집 Vol.24 No.-

Seasonal variation of phytoplankton community was investigated at inner and outer stations around Jeju harbor from March to December 2000 in terms of standing crops and chlorophyll a. Among a total of 171 taxa of Phytoplankton identified, diatoms occupied 67.8%. dinoflagellates 15.2% and phytoflagellates 17.0% in species composition. Two diatoms were seasonally most dominant, that is, Chaetocoros socialis was predominant in March and October. and Skeletonema costatum in May. October and December. Mean standing crops were higher in inner stations with 5.1×106 cells 1-1 than in outer ones with 3.9×104 cells 1-1. Chlorophyll a concentration was also three times higher in inner stations than outer ones. Water temperature and salinity exhibited little difference seasonally in vertical distribution. but they were different between inner and outer stations. Higher water temperature and lower salinity prevailed in the inner station throughout the season. It suggests that the inner harbor has no good circulation and is affected directly by freshwater inflow from the neighboring stream. That accelerates the eutrophication of the inner harbor and thus sometimes causes high concentrations of Phytoplankton in a small red-tide scale.

춘계 한국 남서해역 식물플랑크톤의 공간적 분포

이준백 濟州大學校 海洋硏究所 2003 해양과환경연구소 연구논문집 Vol.27 No.-

춘계 한국 남서해역의 식물플랑크톤의 공간적 분포 특성을 2000년 5월에 총 15개 정점의 표층, 30m, 50m 층에서 조사하였다. 조사시기의 식물플랑크톤 현존량은 전 정점에서 3.23×10⁴∼1.09×10^(7) cells·ℓ^(-1) 범위로 전 정점 평균은 1.62×10^(6) cells·ℓ^(-1)이었다. 우점종은 총 11종이었으며 규조류가 9종. 식물편모조류가 2종으로 규조류가 높은 우점을 보였으며 Skeletonema costatum이 전 정점에서 가장 높은 우점을 보였다. 식물 수문학적 분포를 분석한 결과 조사해역은 4개의 수역으로 구분되었다. Ⅰ 수역은 연안성 종류가 많이 분포하는 연안역, Ⅱ 수역은 중간역, Ⅲ 수역은 외양성 종류가 많이 분포하는 외해역, Ⅳ 수역은 기타 수역으로 분류되었다. 또 Ⅱ 수역은 Skeletonema costatum가 표층과 30m 층에서 춘계 대발생을 나타내었으며 북쪽 방향으로 뻗어 나가는 분포 특징을 보이고 있다. Spatial distribution of phytoplankton was investigated in the southwestern sea of Korea in May 2000 in terms of phytohydrography. Sampling was done at the 0m, 30m, 50m of 15 selected stations, and permanent sides of each samples were prepared by QPS method for quantitative and qualitative analyses. Phytoplankton standing crops ranged from 3.23×10⁴ to 1.09×10^(7) cells·ℓ^(-1) in the study area. Dominant species comprised of 9 diatoms and 2 phytoflagellates, showing high dominance by diatom and most predominance by Skeletonema in all layers of most stations. Phytohydrographic results indicate that the study area might be divided into 4 categories. that is. Ⅰ area is designated as neritic area where terrestrial and coastal species occur frequently. Ⅱ area as intermediate area, Ⅲ area as offshore area 조ere oceanic species dominate. and Ⅳ area as the others. Especially in the Ⅱ area. Skeletonema costatum was most predominant at both surface and 30m layers in most stations and represented an characteristic of northward expansion with spring massive bloom.

제주도 한림항과 성산항 일대 식물플랑크톤의 군집동태

이준백,좌종헌 제주대학교 해양연구소 1990 해양자원연구소연구보고 Vol.14 No.-

1996년 5월 한국 남해 및 서해 연안역의 해양환경과 식물플랑크톤 군집동태

이준백 제주대학교 해양연구소 1998 해양자원연구소연구보고 Vol.22 No.-

The characteristics of marine environment and phytoplankton community dynamics have been investi- gated in the southern and western coastal waters of Korea in May, 1996. Water temperature. salinity. and transparency varied in the range of 9.3~16.0%. 31.7~35.5% 0.4~9.2 m respectively. The concentration of total inorganic nitrogen and phosphate phosphorus distributed in the range of 1.86~62.42 P M and 0.08~0.86 μM. respectively. showing relatively high nitrogen in the southern waters and relatively high phosphorus in the western waters. The N/P ratio were higher in the southern waters than in the western waters. It is believed that the southern waters have been more eutrophicated by the nitrogen sources in Korean waters. A total of 44 species of phytoplankton occurred including 22 spp. of diatom. 21 spp. of dinoflagellate. and 1 sp. of silicoflagellate. The standing crops of phytoplankton were in the range of 1.5 x10^(3(~46.6x10^(3) cells l^(-1), relatively higher abundance in the southern waters than in the western waters. Dinoflagellate was much abundant in the southern waters. which is likely to be related to the eutrophication of the southern waters. Whereas the western waters showed relatively low standing crops. Particularly a benthic diatom. Paralia sulcata (Ehrenberg) Cleve. was most dominant in all most western stations. where this species would be resuspended by the physical movement of water rather than any chemical factors involved in the shallow water.

제주도 문섬 산호서식지 주변의 생물생태학적 특성 Ⅱ. 식물플랑크톤의 군집동태와 1차생산력

이준백,좌종헌,강동우,고유봉,오봉철 제주대학교 방사능이용연구소 2000 연구보고 Vol.14 No.-

Community dynamics of phytoplankton and primary productivity have been investigated bimonthly from February 1997 to December 1997 in the coastal area around Moonsom of the southern Cheju Island, which is well-known for soft coral habitats in Korea. Average water temperature was 18.5℃ , being stratified from May to September by the seasonal thermocline, while vertically homogeneous in the winter. Euphotic depths ranged from 18.9 m to 45.9 m (average 33.7 m). Chlorophyll α concentrations varied from 0.02 to 0.92 ㎍ · ℓ-1 Standing crops of phytoplankton ranged from 2×103 to 3.9×105 cells · ℓ-1, showing a peak only in the spring. Diatoms occupied 67.5% of the total standing crops, while phytoflagellates, dinoflagellates and others 24.3%, 7.1% and 1%, respectively. However phytoflagellates and dinoflagellates were predominated with 36.6% and 38.7% in June, respectively. There was four dominant species in the study area. Chaetoceros sociales Lauder was dominant species from December to April, Prorocentrum micans Ehrenberg in June. In August, Chaetoceros socialis Lauder dominated in inshore but Paralia sulcata (Ehrenberg) Cleve in offshore. In October, Skeletonema costatum (Greville) Gran dominated the whole area. Daily primary productivity varied from 32.3 to 364.9 mg C · m-2 . day-1 (average 180.7 mgC · m-2 . day-1). Contribution of nanoplankton (<20 ㎛) to daily primary productivity was very high, accounting for 28.0-82.8%. Annual primary productivity is estimated 65.97 gC · m-2 ·yr-1, which is lower than those of the coast of Yellow Sea and the southern waters. Nanoplankton seemed to adopt higher irradiances with Ik values of 190-1,000 □· m-2·s-1 (mean 526.7 □ · m-2·s-1) than total phytoplankton with 140-850 □ ·m-2·s-1 (mean 466.7 □· m-2·s-1).

양어용 사료첨가제로서 감귤발효액(EM-Fermented Orange)의 항산화특성

이준백,문상욱,이영돈,고유봉 제주대학교 해양연구소 2000 해양과환경연구소 연구논문집 Vol.24 No.-

Mandarine orange (Citrus unshiu Marc.) only added with sugar was fermented by effective microorganisms (EM) called "EM-fermented orange". EM was mainly composed of lactic acid bacteria, phototrophic bacteria and feast. As pH of EM-fermented orange reached 3.5 to 4.0 in the course of fermentation, the incubation was stopped. and then. EM-fermented orange was preservable at room temperature for about 6 months. Composition and concentration of free amino acids in EM-fermented orange were analyzed. Concentration of total amino acids was 167mg/l, and the relative content of carnosine (β-alanyl-L-histidine) which was well known as a kind of antioxidant materials was very high. 41%. In addition. crude extract showing antioxidant activity could be obtained from EM-fermented orange using some organic solvents. The antioxidant activity of the crude extract was equivalent to about 9% of that of vitamin E by the use of 1.1-diphenyl-2-picrylhydrazyl (DPPH) method. It was suggested that EM-fermented orange having antioxidant characteristics could promote the health of fish.

Wavelet Transform을 이용한 시청각 학습시의 전두부 뇌파 활성도에 관한 연구

이준탁,정소라,백승일 동아대학교 정보기술연구소 2006 情報技術硏究所論文誌 Vol.14 No.1

Real-time estimating brain waves is useful method in studies like brain activity state. And the frontal-lobe of cerebrum is important behavior for something new which intention response and consideration activities. In this paper, analyze the frontal-lobe Waves of cerebrum using wavelet, Furier transform during 5 times repeated new visual education teaching to middle school student. Many researches be attempted to find relation in concentration and emotion with the specify brain waves. There are three waves called α,β,θ waves generated by brain and it's related memory factor and continuous concentration in reseaches. a-wave, one of the three waves generated by brain which is identified that participating in motivate brain activities like attention and memory sequences. So analyze pattern and activity of a-signal in EEG-signals which changing in study sequence of student using wavelet transform for high analysis efficiency in signal processing in this paper.