울릉도 연안에서 식물플랑크톤 우점종의 현존량 및 생체량 변동

권오윤(Oh-Youn KWON),강정훈(Jung-Hoon KANG),윤성진(Sung-Jin YOON) 한국수산해양교육학회 2018 水産海洋敎育硏究 Vol.30 No.6

인천항 내, 외에서 식물플랑크톤 위해종의 분포특성

권오윤(Kwon, Oh Youn),강정훈(Kang, Jung-Hoon) 한국산학기술학회 2014 한국산학기술학회논문지 Vol.15 No.11

인천항에서 선박평형수 배출수에 기인한 외래종을 고려한 항만환경 관리수준 설정을 위해 식물플랑크톤의 잠재적 위해종 출현 특성과 관련된 환경영향 요인을 2007년 2월부터 2009년 11월까지 인천항 내측 및 외측에서 계절조사를 수행하였 다. 조사결과, 한국 주변해역에서 출현한 바 있는 식물플랑크톤 62종이 관찰되었고, 그 중에 적조원인종 13종과 독소생산종 7종의 잠재적 위해종이 관찰되었다. 잠재적 위해종은 여름철과 겨울철에 인천항 외측에서 더 다양하게 출현하였다. 봄과 겨 울철에는 적조원인종인 Skeletonema spp., Thalassiosira nordenskioldii, Paralia sulcata가 항만 내측 (평균 72.4%) 및 외측 (평균 77.6%)에서 모두 우점 하였고, 수소이온과 부유물질의 농도와 양의 상관관계를 나타냈다(p<0.05). 여름철에는 인천항 내측에서 적조원인종(Skeletonema spp.) 및 독소생산종(Alexandrium catanella, A. tamarense, Dinophysis acuminata, Pseudo-nitzschia spp.)이 혼합 우점 (평균 74.2%) 하였으나, 외측에서는 Skeletonema spp.와 P. sulcata가 우점 (평균 67.2%) 하였다. 연구기간 동안 출현한 독소생산종 들은 용존 무기질산염, 규산염, 인산염 및 화학적 산소요구량과 양의 상관관계를 나타냈다(p<0.05). 식물플랑크톤 엽록소-a 농도는 봄과 여름 및 가을철에 인천항 외측에서 각각 평균 3.05 ㎍/L, 1.49 ㎍/L, 5.46 ㎍/L로 내측보다 3-5배 높은 농도가 높았고, 겨울철에는 내측 (평균 0.94 ㎍/L) 및 외측 (평균 0.95 ㎍/L) 간 농도 차이가 없었다. 요약하면, 인천항 외측은 다양한 적조원인종이 우점하며 엽록소-a 농도가 높았으나, 항만 내측은 여름철 독소생산종 의 출현 종수가 높게 나타났고, 외측에 비해 엽록소-a 농도가 낮았다. 각 위해종들의 대 발생 가능성은 영양염, 화학적 산소요 구량 및 부유물질의 농도와 비례한 것으로 나타나, 항만 내, 외측의 환경특성을 고려한 잠재적 위해종 관리가 요구된다. This study examined the occurring pattern of potential risky species and the related abiotic factors for port-specific environmental management considering the control of ballast water-induced foreign species at Incheon seaport. From a total of 62 species observed during the study, 13 red-tide and 7 toxic phytoplankton, normally occurring species in Korean waters, occurred from the seasonal investigation at the inner and outer sites of the Incheon seaport from 2007 to 2009. The number of potential risky phytoplankton was relatively high at the outer site of the port during summer and winter. Red-tide species, such as Skeletonema spp., Thalassiosira nordenskioldii, and Paralia sulcata, dominated the total standing crops at the inner site (avg. 72.4%) and outer site (avg. 77.6%) in spring and summer, being positively correlated with the concentrations of total suspended solids (TSS) and pH (p<0.05). In summer, the red-tide species (Skeletonema spp.) and toxic species (Alexandrium catenella, A. tamarense, Dinophysis acuminata and Pseudo-nitzschia spp.) co-dominated (avg. 74.2%) at the inner site, while Skeletonema spp. and P. sulcata predominated (avg. 67.2%) at the outer site. During the study periods, the toxic species were significantly and positively correlated with the chemical oxygen demand (COD), dissolved inorganic nitrogen, silicate and phosphate (p < 0.05). The chlorophyll-a (chl-a) concentration of phytoplankton at the outer site ranged from 1.49 to 5.46 ㎍/L on average, which was 3-5 times higher than that at the inner site in spring, summer and autumn, whereas there was no difference in the concentration between inner (avg. 0.94 ㎍/L) and outer (avg. 0.95 ㎍/L) sites in winter. In summary, diverse red-tide species dominated and a relatively high chl-a concentration existed at the outer site, whereas a relatively high number of toxic species and low chl-a concentration was observed at the inner site in summer. The potential risky species can outbreak in association with the concentration of nutrients, COD and TSS, suggesting that distinctive management of potential risky species is needed considering the environmental characteristics of Incheon seaport.

항만 환경에서 식물플랑크톤 잠재적 위해종의 분포

권오윤(Kwon, Oh Youn),강정훈(Kang, Jung-Hoon) 한국산학기술학회 2013 한국산학기술학회논문지 Vol.14 No.1

본 연구의 목적은 국내 주요항에서 출현하는 식물플랑크톤 잠재적 위해종의 시 공간적 변화를 파악하고, 환경요인 과의 관계를 이해하는데 있다. 부산, 울산, 인천 및 광양항에서 2007년 1월부터 12월까지 잠재적 위해종 및 환경요인을 계절별로 총 4회 조사하였다. 조사기간 중 출현한 잠재적 위해종은 총 25종으로, 이 중 적조 원인종이 20종이었으며 독소 생산종이 5종이었다. 적조 원인종인 Skeletonema costatum은 전 조사 지역에서 우점종으로 나타났다. 이 종은 부산항에서 수소이온농도와 양의 상관관계를, 용존산소와 음의 상관관계를 보였고(p<0.05), 울산항에서는 부유물질과 수소이온농도와 양의 상관관계를, 염분과 음의 상관관계를 보였다(p<0.05). 또한, 광양항에서는 염분 및 질산염과 양의 상관관계를, 수소이 온농도와 음의 상관관계를 보였고(p<0.05), 인천항에서는 질산염과 양의 상관관계를 보였다(p<0.01). 독소 생산종 중 기억 상실성 패독인 도모익 산을 배출하는 것으로 알려진 Pseudo-nitzschia spp.는 전 조사지역에서 출현하였고, 질산염 및 규산 염과 양의 상관관계를 보였다(p<0.05). 그리고 설사성 마비패독을 일으키는 Dinophysis acuminata 및 기억성 마비패독을 유발하는 Alexandrium spp.는 화학적 산소 요구량과 양의 상관관계를 보였다(p<0.01). 적조 원인종은 항구의 물리적 환경 요인에 영향을 받은 반면 독소 생산종은 영양염류와 같은 화학적 요인에 영향을 받는 것으로 나타났다. This study aimed to understand relationship between potential risky species and environmental factors at ports in Korea. During the study periods, 25 potential risky species (red tide and toxic species) representing 20 red-tide species, 5 toxic species were observed in the all ports. Skeletonema costatum (red-tide species) was predominated in all study area. This species showed positive correlation with pH, while negative correlation with dissolved oxygen (p<0.05) at Busan port. Also, this species showed positive correlation with total suspended solids and pH (p<0.05) at Ulsan port. However, Sk. costatum showed positive correlation with nitrate at Incheon port (p<0.01). Pseudo-nitzschia spp. producing amnesic shellfish poison (domoic acid) showed positive correlation with nitrate and silicate in all study areas (p<0.05). Alexandrium spp. (paralytic shellfish poison) and Dinophysis acuminata (diarrhetic shellfish poison) were affected by chemical oxygen demand (p<0.01). Our results indicated that red-tide species were affected by physical factors, while chemical factors affected toxic species.

ACTS 신학-신앙운동 소고

권오윤 ( Oh Youn Kwon ) 아세아연합신학대학교 신학연구소 2014 ACTS 신학저널 Vol.21 No.-

This is a paper on ACTS theology-faith movement. The ACTS theology-faith movement is a theology-faith movement that proclaims and holds fast to the theological position and missionary task of ACTS, revolving around ACTS Theological Synopsis. This paper briefly looked into the theological and historical backgrounds of the ACTS theology-faith movement and examined the identity and nature of the ACTS theology-faith movement, centering around the major papers of Dr. Han Chul-Ha, who had suggested andled the ACTS theology-faith movement. As a result, the characteristics of the ACTS theology-faith movement were identified as follows: First, the ACTS theology-faith movement is an evangelical movement urging the whole humankind to receive forgiveness of sins and salvation. It is a movement that promotes God’s great grace in Jesus Christ, as witnessed by the Bible, with respect to the repentance of sinners, atonement and salvation. Second, the ACTS theology-faith movement is a theocentric movement that obeys God’s Word of revelation and pursues God-centered faith and life, with the glorification of almighty Creator and Savior God being placed as the reason and purpose of human existence. Third, the core of the ACTS theology-faith movement is not to merely know the salvation of the Bible, but to make salvation revealed in the Bible the central truth of Christian religion and see all the areas of theology from the viewpoint of the central truth of Christian religion. Fourth, the ACTS theology-faith movement is a prophetic reformation movement urging the restoration of evangelical faith, which historical Christianity has adhered to, by firmly establishing the central truth of Christian religion as in the Reformation that claimed a return to the purity of the early Church in opposition to the Roman Catholic Church. Fifth, the ACTS theology-faith movement is an ecumenical movement based on the central truth of Christianity. The Acts theology-faith is a movement to restore theological orthodoxy and religious reawakening in keeping with Calvin’s theology and Wesley’s faith, and an ecumenical movement in the true senseof the word that advocates the central truth of Christianity transcending denominations. Finally, the ACTS theology-faith movement is a revival movements that rejects speculative theology and emotional fanaticism and values true faith that combines theology and faith. In 2014, ACTS celebrates the 40th anniversary of its founding, and it has been 20years since ACTS Theological Synopsis was proposed. It may be said that the history of ACTS’ 40 years was a history of embodying its own identity as well as groping for its identity as an institution for the evangelization of Asia. It isthe ACTS theology-faith movement that shows well the identityof 40 year-old ACTS. The ACTS theology-faith movement is thedriving force that leads ACTS into the realization of its original philosophy of foundation (Theocentricism and Evangelicalism) and its goal (the Evangelization of Asia), and is a good means to itscharacterization that differentiates it from other theological seminaries. It is hoped that ACTS will develop the theology-faith movement more lively, and continue to accomplish its mission for the times as God’s instrument for the evangelization of Asia and the world in the future also as it has done for last 40 years.

선이해(Preunderstanding)와 해석학적 순환(Hermeneutical Circle)에 대한 복음주의적 고찰

권오윤 ( Oh Youn Kwon ) 아세아연합신학대학교 신학연구소 2014 ACTS 신학저널 Vol.22 No.-

One of the important factors in hermeneutical process is an interpreter’s preunderstanding. As Thiselton pointed out, an interpreter’s preunderstanding, especially concerning the subject of a biblical text, is essential for understanding that text. For it would be a difficult attempt to understand a text without a set of presuppositions deduced from other materials than the Bible, that is, a frame of reference. Nevertheless, unconditional dependence on such general preunderstanding would make it impossible to obtain a clear interpretation of a text, because every scholar has a different preunderstanding about a text and naturallyevery scholar could reach a different conclusion. Therefore, although an interpreter``s preunderstanding is indeed necessary, it should not be considered a decisive factor for text interpretation. An interpretation leading to a true meaning does not depend on an interpreter, but on the Bible itself. An interpreter``s preunderstanding must be under the guidance of the word of God, the Bible, whose inerrancy has been secured through the inspiration of the Holy Spirit when it was written. The interpretation of a biblical text ought to be made by seeing it through the eyeglasses of the Bible itself. Preunderstanding, which is an interpreter``s method for approaching a biblical text, must to be in full accordance with the Bible. From this immovable standpoint, this paper made a brief review about preunderstanding and hermeneutical circle, with consideration on them from the evangelical viewpoint. Then hermeneutical spiral, an alternative method proposed by evangelical scholars, was investigated and complemented to propose ‘modified hermeneutical spiral theory.’ Through this theory, it was demonstrated how general preunderstanding could be converted to biblical preunderstanding for the correct interpretation of the Bible.

동해 울산항에서 이화학적 환경요인 및 크기그룹별 식물플랑크톤 생체량의 계절적 변동

권오윤(Kwon, Oh Youn),강정훈(Kang, Jung-Hoon) 한국산학기술학회 2013 한국산학기술학회논문지 Vol.14 No.11

울산항의 물리 및 이화학적 요인과 크기그룹별 식물플랑크톤 생체량의 계절변이 이해를 위해, 2007년 2월부터 2009년 11월까지 계절 조사를 수행하였다. 조사기간 중 수온과 염분은 각각 8.94-24.26℃와 25.06-34.54 psu의 범위에서, 용존산소는 4.30-10.73 ㎎/L, 수소이온농도는 7.97-8.53, 화학적 산소요구량은 0.66-40.70 ㎎/L, 그리고 총 부유물질은 57.4-103.3 ㎎/L의 범위에서 변이를 나타냈다. 이 요인들은 무기영양염과 생체량을 지시하는 총 엽록소-a 농도 분포특성과 달리 뚜렷한 공간적 분포차이가 없었다. 무기영양염 중 인산염은 0.01-3.03 μM의 범위에서, 질산염은 0.05-21.62 μM, 그리 고 규산염은 0.01-27.82 μM의 범위에서 변이를 나타냈는데, 특히 내측정점의 농도가 외측정점에 비해 약 2배 이상 높은 특징을 나타냈다. 총 엽록소-a 농도는 0.36-7.11 ㎍ L-1의 범위로, 내측정점 (평균 1.88 ㎍ L-1)에서 외측정점 (평균 0.90 ㎍L-1)에 비해 높게 나타나 무기영양염의 분포특성과 유사하였다. 소형플랑크톤은 봄철 (34.0-81.2%), 여름철 (35.1-65.6%) 및 겨울 철 (3.9-62.0%)에 전체 생체량의 높은 비율을 차지했고, 가을철에는 미소 및 초 미소플랑크톤이 각각 58.2-74.5%와 22.4-38.2%의 높은 비율을 나타냈다. 그러나 각 크기그룹별 생체량의 점유율의 내측 및 외측 정점 간의 공간분포는 뚜렷한 차이가 없었다. 따라서 동해 울산항의 식물플랑크톤은 계절적으로 가을철을 제외한 모든 시기에 소형플랑크톤 그룹 (평균 52.3%)에 의해 주도되었고, 이는 무기영양염의 농도와 밀접함을 지시하였다 (p<0.05). This study aimed to understand seasonal variation of physico-chemical factors and biomass of size-fractionated phytoplankton at Ulsan seaport during the period from February 2007 to November 2009. Water temperature, salinity, dissolved oxygen (DO), pH, chemical oxygen demand (COD) and total suspended solid (TSS) varied in the range of 8.94-24.26℃, 25.06-34.54 psu, 4.30-10.73 ㎎/L, 7.97-8.53, 0.66-40.70 ㎎/L and 57.4-103.3 ㎎/L, respectively. These factors showed no clear spatial variation unlike spatial pattern of inorganic nutrients and total chlorophyll-a (chl-a) concentration as biomass. Concentration of phosphate, nitrate and silicate ranged from 0.01 to 3.03 μM, 0.05 to 21.62 μM, and 0.01 to 27.82 μM, respectively, with 2 times higher concentration at inner stations than that at outer stations during the study period. Within the range of total chl-a concentration (0.36-7.11 ㎍ L-1), higher concentration (avg. 1.88 ㎍ L-1) of total chl-a were observed at inner stations compared to that (avg. 0.90 ㎍L-1) at outer stations. Micro-sized phytoplankton dominated total biomass of phytoplankton in spring (34.0-81.2%), summer (35.1-65.6%) and winter (3.9-62.0%). Nano- and pico-sized phytoplankton contributed 58.2-74.5% and 22.4-38.2% to total biomass of phytoplankton in autumn, respectively. However, contribution in biomass of size-fractionated phytoplankton to total phytoplankton biomass showed no clear difference between inner and outer stations. Consequently, these results indicated that spatio-temporal distribution of phytoplankton biomass at Ulsan seaport was dominated by micro-phytoplankton (avg. 52.3%) during the study period except autumn, which was closely dependent on the concentration of inorganic nutrients (p<0.05).

한강 하류의 환경학적 연구 8. 식물플랑크톤 군집의 변화에 미치는 물리 화학적 요인

권오윤 ( Oh Youn Kwon ),정승원 ( Seung Won Jung ),이진환 ( Jin Hwan Lee ) 한국하천호수학회 2006 생태와 환경 Vol.39 No.3

2002-2007년 통영바다목장해역에서 식물플랑크톤 현존량 및 생체량에 따른 우점종의 변동 및 관계

정승원,권오윤,이진환,Jung, Seung-Won,Kwon, Oh-Youn,Lee, Jin-Hwan 한국조류학회(藻類) 2008 ALGAE Vol.23 No.1

In order to understand variation and relationship between standing crops and biomass of phytoplankton dominant species for the long term periods, this study was seasonally investigated in the marine ranching ground of Tongyeong coastal waters from 2000 to 2007. Total 268 taxa representing 217 Bacillariophyceae, 46 Dinophyceae, 4 Dictychophyceae, 1 Euglenophyceae were observed in phytoplankton communities. Dominant species consisted of 5 species as standard in standing crops: Chaetoceros curvisetus (18.01%), Chaetoceros socialis (12.95%), Skeletonema costatum (8.39%), Chaetoceros compressus (6.87%), Asterionellopsis glacialis (5.02%). However, to determine dominant species as biomass concept, Ditylum brightwellii, Guinardia striata, Rhizosolenia spp. and Skeletonema costatum were occupied with dominant species (19.67%). As determining for cell sizes, dominant species were divided with two groups such as micro- and nanophytoplankton (standing crops) and mesophytoplankton (biomass). However, Skeletonema costatum in anophytoplankton was associated to affect fluctuation between standing crops and biomass.

수리학적 유형에 따른 대형 인공호의 유기물 특성 비교

박혜경 ( Hae Kyung Park ),권오윤 ( Oh Youn Kwon ),신유나 ( Yu Na Shin ) 한국물환경학회 2007 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2007 No.-

2000~2007년 통영바다목장해역에서 환경요인의 영향에 따른 식물플랑크톤 현존량의 변화

정승원 ( Seung Won Jung ),권오윤 ( Oh Youn Kwon ),주형민 ( Hyoung Min Joo ),이진환 ( Jin Hwan Lee ) 한국환경생물학회 2007 환경생물 : 환경생물학회지 Vol.25 No.4