• 한국수산과학회지
• /
• 제16권4호
• /
• pp.368-378
• /
• 1983

본 연구는 1982년 6월부터 1983년 5월까지 전남 여수반도 남단에 위치한 오동도 해조군락의 특성을 밟히기 위하여 5개의 line transect를 설치하고 연간 계절별로 조사된 자료를 분석 하였다. 해조류의 수직분포는 상부군이 Gelidium divaricatum, Enteromorpha linza, Porphyra yezoensis, Scytosiphon lomentaria, Blidingia nana, Ectocarpus confervoides, 중부군이 Ulva pertusa, Chondria crassicaulis, 그리고 하부군은 Sargossum sagamianum, Undaria pinnatifida, Sargassum thunbergii 및 Gelidium amansii 등의 홍조류로 대표되었다. 출현해조의 종수와 피도는 4월에 최대이고 8월에 최소로되며 종별 우점도의 변화는 연중 출현종은 10월에, 일계절 출현종은 1월 또는 4월에 각각 최대치를 나타내었다. 유사도지수에 따른 5개 transect의 cluster analysis 결과 내만성군과 외양성의 2군으로 분류되었으며 본 지역은 남해안 중${\cdot}$동부 군락에 해당되는 Myelophycus simplex alliance의 Colpomenia sinuosa-Ecklonia cava association에 속한다고 본다.

• ALGAE
• /
• 제21권4호
• /
• pp.453-461
• /
• 2006

This study is intended to clarify the structure and seasonal dynamics of warm tolerant benthic marine algal community in Korea. The species composition and biomass of marine algae at the discharge canal of Wolseong nuclear power plant on the East Coast of Korea were investigated seasonally from February 2001 to October 2005. As a result, 43 species (6 blue-green, 8 green, 9 brown and 20 red algae) of marine algae were found at the discharge canal during the past five years. In general, the number of species observed was abundant during winter to summer and less in autumn. Lyngbya confervoides and Enteromorpha compressa always occurred at the discharge canal during the past five years, and Oscillatoria brevis, Padina arborescens and Caulacanthus ustulatus were common species found more than 80% frequency during the study period. Seasonal fluctuations of mean biomass were 2-659 g dry wt m–2 and dominant species in biomass were Caulacanthus ustulatus (contribution to a total biomass proportion 37%), Enteromorpha compressa (26%) and Padina arborescens (24%). Results showed that, in the floristic composition, the green algae occurred as common algal group at the discharge canal of Wolseong nuclear power plant. In the quantitative aspect, however, the red algae such as Caulacanthus ustulatus and Ahnfeltiopsis flabelliformis appeared as predominant group at the discharge canal, in contrast to Kori nuclear power plant where there was a definite green algal dominance. Differences in algal communities developed at the discharge canals of three nuclear power plants on the East Coast of Korea can probably be related to local environmental factors.

• 한국수산과학회지
• /
• 제47권6호
• /
• pp.927-934
• /
• 2014

Marine algal flora and community structure were seasonally examined at Jungjado, on the southern coast of Korea, from July 2007 to May 2008. A total of 112 seaweeds, including 15 green, 24 brown, and 73 red algae, were identified and 33 species were found throughout the year. The average seaweed biomass was 145.78 g dry weight $m^{-2}$, and the biomass was maximal in winter (184.74 g) and minimal in autumn (106.17 g). The dominant and subdominant species in terms of biomass were Sargassum thunbergii and Grateloupia elliptica in summer, S. thunbergii and Corallina pilulifera in autumn, S. thunbergii and Chondracanthus intermedius in winter, and Sargassum fusiforme and G. elliptica in spring. The vertical distribution patterns of seaweeds from the upper to lower intertidal zones at Jungjado were S. thunbergii - Ulva conglobata - Gelidium elegans in summer; Caulacantus ustulatus - Chondria crassicaulis - C. pilulifera in autumn; Ulva australis - S. thunbergii - G. elliptica in winter; and Gloiopeltis tenax - S. fusiforme - G. elliptica in spring. Seasonally the evenness, richness, and diversity indices tended to have their highest values during the winter and their lowest values in the summer. However, the dominant index was recorded as lowest in winter and highest in the summer. The C/P, R/P, and (R+C)/P values reflecting the flora characteristics were 0.58, 3.04, and 3.62, respectively.

• 해양환경안전학회지
• /
• 제26권2호
• /
• pp.175-185
• /
• 2020

본 연구는 부산시 기장군 연안의 춘계 해조 군집 특성을 파악하고자 수행하였다. 연구는 2017년 5월부터 6월까지 스쿠버 다이빙(scuba diving)을 이용하여 정량 및 정성 조사를 실시하였다. 연구 결과 녹조류 13종(10.7 %), 갈조류 18종(14.9 %), 홍조류 90종(74.4 %) 등 총 121종의 해조류가 출현하였고, 조간대에서 총 56종, 조하대에서 총 110종으로 조하대 출현종이 2배가량 많았으며, 해역별로는 문동 88종, 공수 76종, 대변 75종 순으로 높았다. 연구 해역의 평균 생물량은 1,501.5 g·m^-2로 확인되었으며, 조간대 1,133.5 g·m^-2, 조하대 1,869.4 g·m^-2로 조하대가 더 높았고, 해역별로는 문동 2,234.0 g·m^-2, 공수 1,228.1 g·m^-2, 대변 1,044.4 g·m^-2 순으로 높았다. 높은 생물량을 나타낸 종은 조간대에서 Ulva australis, Sargassum thunbergii, Corallina pilulifera, 조하대에서 Sargassum macrocarpum, Undaria pinnatifida, Phycodrys fimbriata로 확인되었다. 해조류 기능형군별 피도 비율에 따라 군집 상태를 분석한 결과 연구 해역 전체는 'Low', 집단별로는 'Low' ~ 'Moderate' 상태를 나타내었고, 이는 기회종(opportunistic species)이 기장 해역 전체에 걸쳐 폭넓게 분포하고 있는 것을 나타내기 때문에 교란이나 환경오염 등의 문제가 고려된다. 특히 기장 해역은 해조류 양식이 주를 이루고 있어 양식장 조성과 국가어항개발 및 연안 정비 등의 연안개발로 인한 인위적인 영향이 해조 군집에 지속적인 영향을 미칠 것으로 생각되며, 해역 전반에 걸친 해조 군집의 장기 모니터링과 우수한 해조 군집에 대한 관리 방안이 필요할 것으로 판단된다.

• 한국수산과학회지
• /
• 제49권3호
• /
• pp.385-392
• /
• 2016

Seasonal variability in the algal community structure of intertidal zones was examined at six study sites in Marine National Parks, on the western and southern coasts of Korea from March to November 2015. A total of 193 species of algae, comprising 27 green, 40 brown and 126 red algae, were identified. Algal biomass averaged 101.50 g dry wt./m² with a maximal at Tonggae (168.12 g dry wt./m²) and minimum at Haseom (54.49 g dry wt./m²). The dominant seaweeds by biomass were Sargassum thunbergii at five sites (Tonggae, Haseom, Namdongri, Ando amd Sinjeonri), and S. fusiforme at Soando. Community indices measured as follows: dominance index (DI), 0.31–0.69; richness index (R), 7.30–11.43; evenness index (J'), 0.33–0.49; and diversity index (H'), 1.15–1.86. As evaluated using community indices and environmental states, the EEI (Ecological Evaluation Index) of the Marine National Park was “normal”. The present results indicate that seaweed community structures and indices could be used to evaluate the environmental status of coastal ecosystems.

• ALGAE
• /
• 제26권4호
• /
• pp.333-342
• /
• 2011

Macroalgae are important primary producers in marine ecosystem. They don't only play an important role as bioindicators but also provide economic resources for humans. Seasonal and vertical variations in seaweed species composition and biomass were examined to determine the ecological status of seaweed beds around Udo, near Jeju Island. We obtained samples at two sites in the high-intertidal to subtidal zones using the quadrat method between June 2010 and May 2011. A total of 262 species were collected, including 31 green, 61 brown, and 170 red algae. The composition of algal species revealed a decrease in species growing in cold water in comparison with the list 20 years ago. The macroalgal mean biomass (g wet wt $m^{-2}$) was 3,476 g and 2,393 g from the two sites, respectively. Ecklonia cava had the greatest biomass at both sites. The seasonal dominant species by biomass at site 1 from the low-intertidal to 1-3 m depth of the subtidal zone was mostly comprised of thick-leathery form, such as Sargassum hemiphyllum, S. coreanum, and Ecklonia cava, whereas site 2 was comprised of the turf form, such as Chondrophycus intermedius, Chondracanthus intermedius, Dictyopteris prolifera, and Gelidium elegans. The current ecological status of the seaweed community in Udo is stable based on diversity and dominance indices.

• ALGAE
• /
• 제22권3호
• /
• pp.209-219
• /
• 2007

Marine algal flora and community structure of medicinal seaweeds were examined at Kkotji of Taean Peninsula, Korea from May 2005 to January 2006. Seventy-nine seaweeds including 42 medicinal algae and one marine plant were identified. Sargassum thunbergii was the representative alga occurred at all seasons and shore levels. The dominant medicinal seaweeds were perennial S. thunbergii, Neorhodomela aculeata, and Corallina pilulifera, and ephemeral Monostroma grevillei, Porphyra yezoensis, and Ulva pertusa. Their vertical distribution were N. aculeata – P. yezoensis, M. grevillei, and U. pertusa – C. pilulifera from high to low intertidal zone. The average biomass of medicinal seaweeds varied from 34.17 g m–2 in spring to 56.41 g m–2 in summer. At Kkotji shore, the opportunistic species (Enteromorpha, Ulva, and Cladophora) and turf-forming algae (Caulacanthus okamurae and Gelidium divaricatum) were easily observed. Such fast growing ESG II (ecological state group) was 87.50% and slow growing perennial algae, ESG I was only 12.15%. Also, diversity index (H’) and dominance index (DI) indicate that the seaweed community of Kkotji is unstable. Therefore, Kkotji rocky shore should be more protected from human activities such as turbulence and eutrophication in order to maintain species diversity and abundance of medicinal seaweeds.

• 한국수산과학회지
• /
• 제44권5호
• /
• pp.524-532
• /
• 2011

The intertidal benthic macroalgal floras of 19 uninhabited islands were investigated in the Goheung area, South Sea, Korea, in June 2008. Seaweed community structures on the rocky shores of four (Naemaemuldo, Ceoldo, Araedombaeseom, and Jinjioedo) of the 19 islands were also examined. Eighty macroalgal species were identified, including 13 green, 19 brown, and 48 red algae. The maximum number of species was found at Naemaemuldo, with 35 species, and the minimum was at Aredombaeseom, with 21 species. Seaweed biomass ranged from 21.39-76.22 g dry wt/$m^2$, with a maximum at Naemaemuldo, and minimum at Jinjioedo. Sargassum thunbergii was a representative species, distributed widely in the intertidal zone of the four islands. Subdominant seaweeds were Corallina pilulifera and Ulva pertusa at Naemaemuldo and Jinjioedo, respectively. Also, Ishige okamurae was dominant at Ceoldo and Araedombaeseom. Six functional seaweed forms were found at each study site, except for Araedombaeseom, which had four functional groups. On the rocky shores of the four sites, a coarsely-branched form was the most dominant functional group ranging from 44.44-61.90% in species number and 72.42-91. 09% in biomass. In conclusion, among the four study sites, the shore of Naemaemuldo Island had the best ecological status, with the highest number of species, and greatest biomass (mainly brown and red algae) and functional form diversity of seaweeds. Furthermore, on the rocky shore of Naemaemuldo, coarsely branched- and joint calcareous-form seaweeds, which grow in clean and undisturbed environmental conditions, were the representative functional forms.

• 환경생물
• /
• 제39권1호
• /
• pp.81-87
• /
• 2021

2008년 4월부터 2009년 3월까지 1년간 우리나라 서남해안 함평만의 도리포에서는 조간대의 해조류 식물 군집과 가입리에서는 식용 해조류 가시파래의 월별 변동성을 매월 조사하였다. 조사된 해조류는 총 22종이었으며, 녹조류 5종, 갈조류 4종 그리고 홍조류 13종이었다. 함평만 도리포 암반 조간대에서 연간 우점하는 해조류는 구멍갈파래였고, 준 우점종은 잎파래와 애기가시덤불이었다. 조간대 상부에서 하부에 이르는 수직분포는 잎파래 - 애기가시덤불 - 구멍갈파래 - 지충이었다. 가시파래의 생물량은 6월에 최대를 보였고 11월에 최소를 보였으며, 2.4-98.2 g dry wt. m^-2 범위를 나타냈다. 가시파래의 생물량은 수온과 연관이 있어 보이지만 영양염류 및 빛의 강도 같은 기타 환경요인과의 관계는 추후 지속적인 연구가 요구된다.

• 해양환경안전학회지
• /
• 제21권2호
• /
• pp.119-129
• /
• 2015

우리나라 동해안 중부의 축산항 지역에서 2007년 7월부터 2009년 5월까지 계절별로 조간대와 조하대 해조류의 종조성과 군집구조를 조사하였다. 2년에 걸친 조사를 통해 밝혀진 해조류는 총 98종(녹조류 13종, 갈조류 23종, 홍조류 62종)이었고, 조사시기별로는 33~63종의 범위로 나타났다. 이 가운데 녹조류 2종(구멍갈파래, 떡청각), 갈조류 3종(참그물바탕말, 톳, 왜모자반), 그리고 홍조류 11종(작은구슬산호말, 혹돌잎, 참도박, 참지누아리, 붉은까막살, 진분홍딱지, 진두발, 잔금분홍잎, 개서실, 모로우붉은실, 참보라색우무)의 16종은 모든 조사시기에 관찰되었다. 해조류의 단위면적당 생물량은 평균 $629.68g\;dry\;wt\;m^{-2}$이었으며, 계절별로 $119.30{\sim}1,660.96g\;dry\;wt\;m^{-2}$의 범위를 보였다. 조사지역 해조군집의 수직분포는 조간대에서 작은구슬산호말과 모자반류, 조하대 1 m에서 모자반류, 5 m에서 모자반류와 무절산호조류 그리고 10 m에서 무절산호조류로 대표되었다.