독도 주변 해역의 하계 해조군집 변동

권천중,박규진,오석진,최창근 해양환경안전학회 2013 해양환경안전학회 학술발표대회 논문집 Vol.2013 No.11

발광다이오드(LED) 조명을 이용한 녹조 구멍갈파래U(lva pertusa)의 생장

권천중 ( Chun Jung Kwon ),최창근 ( Chang Geun Choi ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.5

To determine an efficient growth system for algal cultivation and to develop adequate culture system utilizing LED light, we investigated the effects of fluorescent and light emitting diode (LED) light source on the growth of Ulva pertusa . U . pertusa was cultured at 17 ºC under a light intensity of 35 μmol photons m-2s-1 and a 10L:14D photoperiod using either fluorescent or LED lamps. After 1 week of incubation under the same environmental condition, the length and width of Ulva pertusa grown under LED light were 1.5- and 1.9-fold greater, respectively,than the length and width of algae grown under fluorescent light. After two weeks, length and width were 2.6-and 2.0-fold greater, respectively, in algae grown under LED light. Total length and width of Ulva pertusa after three weeks of incubation were 1.7- and 1.2-fold greater in algae grown under LED light than those grown under fluorescent light. Therefore, the LED light induced significantly higher growth of Ulva pertusa than fluorescent light.

강원 연곡천 생태계와 수질보전을 위한 기초 연구

권천중(C. J. Kwon),윤이용(Y. Y. Yoon),김일회(I. H. Kim),김형섭(H. S. Kim) 한국해양환경·에너지학회 2003 한국해양환경공학회 학술대회논문집 Vol.2003 No.-

동해안에 자생하는 거머리말 ( Zostera marina L. ) 의 생육지 분포에 따른 형태 분석

권천중(Chun Joong Kwon),이상용(Sang Yong Lee),최청일(Chung Il Choi) 한국환경생물학회 2002 환경생물 : 환경생물학회지 Vol.20 No.1

N/A The intraspecific variability, habitats, and morphological characteristics of eelgrass(Zostera marina L.) along the eastern coast of Korea were examined during June to August 1998. Morphological characteristics including shoot height, leaf length, leaf width, number of leaf veins, and shape of leaf apex were measured, and eelgrass habitats were analyzed using character correlation, principal components and cluster analyses. The morphological characteristics varied with the habitat types and water depth. Eelgrass beds distributed mostly in lagoons, ports and bays along the east coast of the Korean peninsula. The quantitative morphological features that enabled recognition of the two phenetic groups were short-narrow and long-broad lear types. Leaf apex in particular varied with the habitat characteristics.

거머리말(Zostera marina L.)과 왕거머리말(Z. asiatica Miki)서식지의 퇴적 환경

이상용,권천중,최청일 한양대학교 이학기술연구소 2000 이학기술연구지 Vol.2 No.

1998년 7월부터 9월까지 동해 연안과 남해 연안의 거머리말과 왕거머리말 서식지 퇴적 환경을 파악하고 종간의 서식처의 특성을 규명하였다. 거머리말의 서식지는 주로 내만과 항구로 동해와 남해 연안에서 모두 출현하였으며, 왕거머리말의 서식지는 개방된 동해 연안에서만 출현하였다. 거머리말 서식지에서 퇴적물의 평균 입도는 매우 조립한 사질 퇴적물과 사니질 혼합 퇴적물이 주로 분포하였으며, 왕거머리말 서식지에는 조립한 사질 퇴적물이 분포하였다. 서식지 따른 퇴적물의 수직적인 입도 분포 결과 왕거머리말 서식지에서는 수심에 따라 고르게 나타났으며, 거머리말 서식지는 지역에 따라 다양하였고, 상부 15cm까지는 니질 퇴적물이 높게 나타났다. 조사된 거머리말과 왕거머리말 서식지의 퇴적물의 평균 입도 조성은 함수율과 유기물 함량과는 정 상관관계를 나타내었다. Sediment characteristics from the beds of Zostera marina and asiatica on the eastern and southern coasts of Korea were investigated during July and August 1998. Results show the Z. maria beds are located on the south and eastern coasts mostly in bays and/or ports and the Z. asiatica beds are located on the eastern coast in the open sea. The gain size of the sediment in the Z. marina beds was composed of sand and muddy sand, and the Z. asiatica beds were entirely composed of sand. A vertical distribution of grain size of the Z. asiatica beds was well-sorted these sites increased as the depth increased to a depth of 15cm. The relationship between the mean grain size of sediment with water contents and sediment with organic contents was correlative.

부산 이기대 지역의 해조상 및 군집구조

신봉균,권천중,이석모,최창근,Shin, Bong-Kyun,Kwon, Chun-Jung,Lee, Suk-Mo,Choi, Chang-Geun 해양환경안전학회 2014 해양환경안전학회지 Vol.20 No.2

우리나라 동남해 연안 해역에 위치한 이기대 지역에서 2010년 5월부터 2011년 2월까지 계절별로 해조상 및 군집구조에 관한 연구를 수행하였다. 조사기간 동안 녹조류 9종, 갈조류 14종, 홍조류 43을 포함한 총 66종이 동정되었으며, 16종의 해조류는 조사지역에서 연중 출현하였다. 계절별 평균 현존량은 봄 $123.6g{\cdot}m^{-2}$, 여름 $2,061.6g{\cdot}m^{-2}$, 가을 $412.0g{\cdot}m^{-2}$, 겨울 $678.9g{\cdot}m^{-2}$로 나타났다. 종조성의 차이는 주변의 오염원이 존재하지 않는 정점 3과 4에 비하여 주변 하천의 영향을 받는 정점 1로 갈수록 종조성이 상대적으로 낮은 경향을 보였는데 이는 주변의 용호천, 대연천, 남부하수처리장 방류수에 의한 영향으로 판단되었다. 해조군집의 생태적 특성을 판단할 수 있는 R/P, C/P, (R+C)/P 값은 각각 3.07, 0.64, 3.71로 나타났으며, 해조류의 외부형태와 내부구조 등에 따라 구분되는 6가지 기능형군에 따른 분류결과는 성긴분기형 39.39 %, 엽상형 30.30 %, 다육질형 13.64 %, 사상형 12.12 %, 각상형 3.03 %, 유절산호말형 1.52 %으로 나타났다. 한편, 이기대 지역의 해조류 개체수는 1996년부터 1997년에 96종, 2010년부터 2011년에 66종으로 감소된 것을 확인하였다. 이는 주변하천과 하수처리장의 방류수 등에 의한 영향으로 판단된다. 결론적으로 대도시 인근 연안의 해조군락 보호 및 육성을 위하여 연안역에 유입되는 오하수의 처리 및 해조장 복원과 같은 적극적인 해양환경 유지관리방법이 체계적으로 추진되어야 할 것이다. Marine algal flora and community structure were seasonally investigated at four sites in the vicinity of the Igidae on the southern east coast of Korea from May 2010 to February 2011. A total of 66 species including 9 of Chlorophyta, 14 of Phaeophyta, 43 of Rhodophyta were found during the survey period. Among these species, 16 species were found throughout the year. Seasonal mean biomass in wet weight was 123.6 (spring), 2,061.6 (summer), 412.0 (autumn), 678.9 (winter) $g{\cdot}m^{-2}$. Maximum biomass was recorded in summer($2,061.6g{\cdot}m^{-2}$), and minimum was recorded in spring($123.6g{\cdot}m^{-2}$). Spatial maximum and minimum species number were recorded at station 3 and 4(50 species) and at station 1(47 species). At station 1, 2 directly exposure on Yongho and Daeyeon cheon (stream) run off, and discharge from Nambu sewage treatment plants near coastal area, species diversity was relatively low and dominant species were similar throughout four seasons. The R/P, C/P and (R+C)/P value reflecting flora characteristics were 3.07, 0.64 and 3.71, respectively. The flora investigated could be classified into six functional groups such as coarsely branch form 39.39 %, sheet form 30.30 %, thick leather form 13.64 %, filamentous form 12.12 %, crustose form 3.03% and jointed calcareous form 1.52 % during survey period. The number of marine algae species in Igidea were 96 species at 1996 to 1997 and 66 species at 2010 to 2011, respectively. The change of seaweed species is due to the pollution loaded from sewage treatment plant and stream. We thus recommend that the positive maintenance control method like sewage treatment, for the protection of seaweed bed should be proceeded to near coastal area.

Distribution of Eelgrass, Zostera marina L. on Coasts of the Korean Peninsula: Preliminary Study for Eelgrass Restoration

이상용,권천중,이근섭,조정일 한국해양과학기술원 2002 Ocean and Polar Research Vol.24 No.1

Eelgrass, Zostera marina L. widely spreads throughout all the coastal areas of the Korean Peninsula. However, some previously reported eelgrass populations disappeared. The disappearance was probably caused by anthropogenic disturbance such as reclamation and pollutant or exceeded nutrient release. Eelgrass beds occurred from the intertidal to the subtidal zone, mainly in lagoon, estuaries, ports, barrier reef and bays. Eelgrass beds were also found at the intertidal mud and sand flats, subtidal mud and sandbank in more exposed areas. Habitat characteristics of eelgrass beds distributed on the coasts of the Korean Peninsula varied among coast areas. Eelgrass distributed constantly throughout the southern coast of Korea, while the distribution was limited at lagoon, bay, port, or barrier reef on the eastern coast, because of steep water depth and high wave energy in that coast. On the western coast, eelgrass mainly appeared at the intertidal and subtidal zones in islands. Sediment characteristics of the Z. marina beds varied with locality, tidal current and water motion. Sediments of Z. marina beds were composed of sand, muddy sand, sandy mud and mud. Mean grain size ranged from 1.5 to 4.1 phi.

A new record of genus Mycale (Poecilosclerida: Mycalidae) from Korea

강동원,권천중,이상휘,김형준 국립중앙과학관 2017 Journal of Asia-Pacific Biodiversity Vol.10 No.2

A marine sponge, Mycale (Mycale) laevis (Carter 1882), is newly reported from Korean sea waters. The specimen was collected by SCUBA diving in July 2016 from Gageocho, Gageodo, Korea. The characteristics of this specimen are similar to those of the specimens of van Soest (1984) and Pulitzer-Finali (1986); however, this specimen is slightly different in spicules size (subtylostyle, anisochela I).

Ecological Status Evaluation using Seaweed Community Structures of Taean Coastal Areas in Korea

나연주,김주희,권천중,최한길,Ki Wan Nam 한국해양과학기술원 2015 Ocean and Polar Research Vol.37 No.4

To evaluate the relative ecological quality of Taean coastal areas in terms of various seaweed community indices, seasonal samplings were taken at the Hakampo, Padori, Chaeseokpo, Mongsanpo and Bangpo shores from March 2006 to January 2007. A total of 105 species were identified; species richness ranged from 37~72 species spatially and from 65~75 species seasonally over the study period. Coarselybranched seaweeds were dominant in functional group and ESG I (ecological state group I) made up 61 species (58.10%) of the identified macroalgae. The average seaweed biomass at the five study sites was 56.63 g dry wt./m2 (range, 36.66 at Hakampo −73.89 g/m2 at Mongsanpo). Seaweeds were generally abundant in mid and low intertidal zone. Corallina pilulifera, Ulva australis, Sargassum thunbergii, Neorhodomela aculeata, and Symphyocladia latiuscula were the dominant species across all five study sites. Species diversity was between 1.24~2.30, while species evenness was between 0.40 and 0.61. The dominance index ranged from 0.43 at Padori to 0.64 at Mongsanpo. Given the community indices and shore descriptions, the five study sites were divided into two groups based on ecological quality: moderate (Chaeseokpo and Mongsanpo) and good (Hakampo, Padori and Bangpo).

동해안에서 자생하는 거머리말속(Zostera , Zosteraceae) 식물의 분포와 생육지 환경

이상용,최청일,권천중 한국수산학회 2000 한국수산과학회지 Vol.33 No.6

한국산 거머리말속 중 동해 연안에 자생하는 식물의 분포와 생육지 환경의 특성을 파악하기 위해 1998년 6월부터 2000년 7월까지 중부 동해안의 화진포에서부터 남부 동해안 대변까지 조사하였다. 동해 연안에 자생하는 거머리말속은 거머리말, 왕거머리말과 포기거머리말 3종이 조사되었다. 거머리말 생육지는 기수호, 항과 만의 수심 1.3∼5.6m의 sand와 muddy sand 퇴적 환경에서, 왕거머리말은 수심 8.5∼15.0m의 개방된 연안의 sand 퇴적 환경에서 출현하였다. 포기거머리말은 덕산항과 대변항에서 그 생육지가 처음 보고되었으며, 거머리말보다 깊은 지역에서 함께 생육하였다. 거머리말속의 식물 형태는 영양지와 생식지로 구분되었으며, 거머리말 영양지의 길이는 일산의 66.8㎝에서부터 감포항의 110.0㎝까지, 생식지의 길이는 화진포의 128.0㎝에서부터 감포항의 277.8㎝까지 생육 지역과 수심에 따라 다양하게 출현하였다. 왕거머리말은 영양지와 생식지가 64.0∼75.7㎝ 범위로 새로운 표현형으로 생육지의 수심에 영향을 받는 것으로 판단된다. 포기거머리말은 영양지와 생식지가 64.9∼70.3㎝로 생식지가 좀더 길게 성장하였다. 영양염의 농도는 동해 남부 지역이 중부 지역보다 높게 나타났다. 동해안에서 자생하는 거머리말속 식물의 분포는 퇴적 환경보다는 종에 따라 생육 장소(만, 항구와 개방 연안 등)와 수심에 영향을 받고, 수심과 같은 생육 환경의 차이는 식물체의 형태 변이에 영향을 미치는 것으로 조사되었다. Distribution and habitat characteristics of Zostera (Zosteraceae) in the eastern coast of Korea were examined along with plant morphology, sediment composition and physicochemical factors of seawater from June 1998 to July 2000. The results showed that three species, Zastera marina, Z. asatica and Z. caespitosa were found in specific habitats. The depth of habitat for Z. asiatica was deeper (8.5∼15.0m) than that of Z. marina (1.3∼5.6m) and Z. caespitosa (3.2∼5.2m). Z. marina beds were observed at brackish-water, port and inner bay with the sediment type of sand or muddy sand. Habitats of Z. asiatica were restricted to the open bay with the sediment type of sand. Zostera have been described with regard to different growth forms of vegetation, flowering shoot and life history. Vegetation and flowering shoot length varied significantly with habitats; values ranged 66.8-110.0 cm and 128.0∼277.8㎝, respectively. Morphology of Z. marina varied with water depth and different substrates. Morphological characteristics of Z. asiatica showed a new phenotype at the deeper water depth. Vegetation and flowering shoots of Z, caespitosa were not significantly different between study sites (values ranged from 64.9㎝ to 70.3㎝). Nutrient concentrations of seawater were higher at southern part than at middle part of the eastern coast of Korea. Distribution of Zostera in the eastern coast of Korea was dependent upon differences in water depth and habitat environments, by which affected the morphological differences were affected.