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      • KCI등재
      • KCI등재

        먹이생물의 종류와 양이 암반 조하대 저서동물(연체동물) 군집구조 결정요소가 될 수 있는가?

        손민호,김현정,강창근,황인서,김영남,문창호,황정민,한수진,이원행,SON, MIN-HO,KIM, HYUN-JUNG,KANG, CHANG-KEUN,HWANG, IN-SUH,KIM, YOUNG-NAM,MOON, CHANG-HO,HWANG, JUNG-MIN,HAN, SU-JIN,LEE, WON-HAENG 한국해양학회 2019 바다 Vol.24 No.1

        본 연구에서는 '국가해양생태계종합조사' 결과를 활용하여 "암반 조하대에 서식하는 연체동물의 군집구조가 먹이자원의 종류와 양에 따라 섭식형(feeding type)별로 차이를 보일 수 있는지?"를 확인하였다. 다수의 참고문헌을 바탕으로 연체동물 섭식형을 초식형, 여과섭식형, 퇴적물섭식형, 잡식형, 포식형으로 구분하였을 때, 조사해역에서는 초식형과 여과섭식형이 우점하였다. 해역별로는 동해에서 초식형 비율(47.9%)이 가장 높았고, 남해에서는 초식형(32.6%)과 여과섭식형의 비율(29.6%)이 유사하게 높았으며, 황해에서는 여과섭식형 비율(42.3%)이 우세하여 해역별로 섭식형에 따른 연체동물의 군집구조가 뚜렷한 차이를 보였다. 이 결과를 바탕으로 "연체동물의 해역별 섭식형에 따른 군집구조 차이가 우연한 것인지?" 아니면, 각 "섭식형별 활용 가능한 먹이자원의 종류와 양(조성율, %)적 차이에 의한 것인지?"를 파악한 결과, 섭식형에 따른 군집구조의 차이는 각 섭식형별 활용 가능 먹이자원의 종류와 양적 차이에서 기인됨을 확인하였다. 초식형이 우점한 동해에서는 투명도가 상대적으로 2배 정도 높아 해조류 성장에 유리하였으며, 그 중에서도 엽상형(sheet form)과 다육질형(thick-leathery form)의 해조류 군집이 발달되어 있어 초식형의 먹이자원이 풍부하였다. 한편, 초식형과 여과섭식형의 비율이 유사하게 높았던 남해에서는 해조류 군집이 발달되었을 뿐만 아니라, 식물플랑크톤 밀도가 상대적으로 가장 높았으며, 황해는 타 해역 대비 해조류의 서식량이 가장 낮은 반면 식물플랑크톤의 밀도는 유사하여 여과섭식형의 서식에 유리한 조건이었다. 따라서, 연체동물의 군집구조, 특히 섭식형에 기초한 'Feeding guild'로서의 군집구조는 우연히 결정되는 것이 아니라, 이들의 서식지 내에서 이용 가능한 먹이자원의 종류 및 양이 하나의 주요한 결정 요소로 영향을 미치는 것으로 판단되었다. Effects of feeding type and food resource availability on community structure of mollusks inhabiting hard-bottom subtidal areas were investigated. By following guidance from several references, mollusks observed in this study were divided into 5 groups according to feeding type - 1) grazing, 2) filter feeding, 3) deposit feeding, 4) omnivorous and 5) predation. The results showed that both grazing and filter feeders were the most numerous, explaining grazing type in the East Sea accounting for 47.9%, 32.6% in the South Sea and 29.6% for filter feeding, and filter feeding as a dominant feeding type in Yellow Sea accounting for 42.3%. Results of this study showed distinctive difference in community structure depending on mechanism of feeding type and geographical areas where sampling took place. With the results, attempts were made to understand whether community structure could be affected by feeding type or feeding availability and found out that community structure depended heavily on food resource availability. In the East Sea where marine algal density was high, the algal community in the forms of thick-leathery and sheet often occurred in water column with high transparency which provides proper environment for growth. In the South Sea where grazing and filter feeding types were predominated similarly, the algal density was high, but had the relative highest phytoplankton density. Whereas in the Yellow Sea showing the lowest algal biomass compared to the one in the East and the South Sea, and phytoplankton density was similar to those. It might be a adequate environment for filter feeders than grazers. This study concluded that community structure of mollusks showing high abundance was present where food resource availability with types and quantity was high.

      • KCI등재후보

        Report on Unknown Form, hitherto, of the Genus Octopus from Eastern Coast of Korea

        손민호,김미향 한국패류학회 2009 The Korean Journal of Malacology Vol.25 No.1

        A specimen of the unknown form of Octopus species was collected from Onsan, Kyungsangnam-do, eastern coast of Korea on 20th June 2004 with a bottom trawl. The specimen distinguished from the other Octopus species reported hitherto by its extremely short 2nd pair of arm and hectocotilization of the right 4th arm. It may be described, therefore, as new species, but only one specimen was collected unfortunately. A new name will be deferred, consequently, until more specimens will be available in the future.

      • KCI등재후보

        Two Unrecorded Molluscan Species (Atrina teramachii and Liocranchia reinhardti) from Korean Waters

        손민호 한국패류학회 2009 The Korean Journal of Malacology Vol.25 No.2

        Two molluscan species belonging to Bivalvia (Atrina teramachii Habe) and Cephalopoda (Liocranchia reinhardti Steenstrup) were found new to the Korean malacofauna. The author report, consequently, two additional molluscan species new to the fauna with figures and remarks on slight morphological variation comparing to the original and previous descriptions. Two molluscan species belonging to Bivalvia (Atrina teramachii Habe) and Cephalopoda (Liocranchia reinhardti Steenstrup) were found new to the Korean malacofauna. The author report, consequently, two additional molluscan species new to the fauna with figures and remarks on slight morphological variation comparing to the original and previous descriptions.

      • SCOPUSKCI등재

        대향분출화염의 분산화학반응 화염구조와 NOx 저감기구

        손민호,조용진,윤영빈,이창진 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.10

        The measurement of velocity and stain rate field has been conducted in opposed impinging jet combustion. When a smaller diameter (5mm) orifice of pre-chamber was used, previous studies had reported that the combustion phase showed a shift from weak turbulent combustion to moderate turbulent combustion in the modified Borghi Diagram. In the case with smaller orifice diameter (5mm), NOx emission was substantially reduced by a factor 1/2 while the combustion pressure remains at the same as that in the conventional combustion. Hence, in this study, the experiment setup using PIV technique was designed to identify the relation of the strain rate distribution and NOx reduction associated with moderate turbulent combustion. As a result, it was found that the highly strained pockets are widely distributed during the combustion in the middle of chamber when the orifice diameter is 5mm. And the corresponding PDF distribution of strain rates she was the smoothly distributed strain .ate within the range of |$\pm$1000| (1/sec) rather than a spike shape about zero point. This is the unique feature observed in the combustion with 5mm orifice diameter. Therefore, it can be concluded that the substantial NOx reduction in opposed impinging combustor is mainly attributed to the strain rate distribution within the range of |$\pm$1000|resulting in the combustion phase shift to moderate turbulent combustion.

      • 이야기 주체로서의 정체성의 상황 구성성에 관해서: 민속-방법론적 상황주의 관점에서

        손민호 한국내러티브교육학회 2015 내러티브와 교육연구 Vol.3 No.3

        많은 내러티브 연구들의 관심은 정체성의 이야기에 관한 이해로 집약된다고 볼 수 있다. 본고에서는 이야기의 주체로서 정체성을 방법론적 개인주의가 아닌 방법론적 상황주의 관점에서 바라보았을 때 어떤 새로운 이해를 줄 수 있는지 살펴보고자 한다. 방법론적 상황주의는 상징적 상호작용으로부터 시작하여 민속방법론 등에 이르기까지 미시적인 사회적 상호작용 연구 장르에서 찾아볼 수 있다. 본고에서는 그 가운데 민속방법론을 중심으로 한 방법론적 상황주의에 입각해서 이야기 주체로서의 개인의 정체성과 그 일상적 구성성에 관해 되짚어 보고자 한다. 민속방법론은 상식과 실제적 행위가 어떻게 일상의 생활세계를 구성하는지에 관심을 둔 연구영역이다. 방법론적 상황주의는 이야기의 주체로서 개인의 정체성 그리고 그 구성의 디테일한 과정에 관해 새로운 이해의 길을 열어줄 것으로 본다. Within a sometimes polarized environment characterized by debates concerning narrative and identity, little attention was paid to examining how people understood social identity and how they used social identities in their everyday world. That is to say social identity is something people in society do, achieve, negotiate, attribute things to and act upon as part of their daily lives. Membership Categorization Analysis (MCA) is one means of explicating the practically oriented, common- sensical, and cultural reasoning of people as they go about their social lives. In particular it focuses on the recognizability of people as certain sorts of people or, more specifically, people as certain sorts of members of society, and how this recognizability is a resource for members in their dealings with each other. And as one of the primary ways in which we ‘deal’ with each other is through language, MCA is often brought to bear on the analysis of how people use language in situations of everyday life. Methodological situationism shows us how a member as an agent makes use of membership categorization in interaction with each other. It will provide us a way that analyze an understanding of intrinsic presence of identity in everyday life.

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