• The Science & Technology
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• v.33 no.11 s.378
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• pp.42-44
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• 2000

고려 말 공민왕 때의 백문보는 수치를 만들어 가뭄피해를 줄여야한다고 임금에게 상소한 대학자이다. 우리 역사상 최초로 수차의 중요성을 제창한 백문보는 중국에서는 수차를 보급하여 가뭄걱정을 않고 농사를 짓고 있는데 우리는 한길도 안되는 아래 웅덩이의 물을 이용할줄 모른다 한탄했다. 그러나 기술 부족, 지형적 특성 그리고 정책의 일관성 부족 등으로 수차가 널리 보급되지는 못했다. 임금 앞에서 강의도 했던 그는 단군의 기원을 분명하게 계산한 학자로 '홍건적의 난'때 불타버린 국사를 다시 편찬하는 대사에도 참여했다.

• Korean Journal of Ichthyology
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• v.25 no.4
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• pp.227-233
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• 2013

Speceis composition and distribution by altitude of fish in the rock tide pools in Taean were determined using montly samples collected in the 9 tide pools from January to December 2010. Among 16 species collected, a forktongue goby Chaenogobius annularis was dominant accounting for 34.6% in the total number of individuals, and followed by Dictysoma burgeri (22.0%), Sebastes schlegelii (6.9%) and Tridentiger trigonocephalus (6.8%). A resident fish Dictyosoma burger occurred at all tide pools, and Chasmichthys dolichognathus was dominant in the upper tide pools and was collected throughout the study period. The resident fish is more abundant than the transient fish and occasional fish accounted for 61.4%, 14.2% and 24.4% in biomass, respectively.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.456-456
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• 2021

하상 변화는 유량이나 유사의 흐름에 따라 침식, 운반, 퇴적되어 변화하며, 하상변동에 의한 결과는 하천의 형태 (직렬,복렬, 곡렬 등)나 서식처의 구조 (여울과 소, 웅덩이, 습지 등) 형성 로 나타난다. 이어서 서식처 구조의 다양성은 생물다양성에 긍정적인 영향을 미친다. 본 연구에서는 수리 (유량이나 유사량)-지형(서식처 구조)-생태 (생물다양성)을 연계하여 관리하기 위한 생태적인 하천관리 프레임을 제시하기 위하여, 지형과 생물상의 관계를 우선 파악하고자 한다. 국내 하천은 수생태 건강성 평가 중 서식 및 수변환경 지수(HRI, Habitat and Riparian Index)를 활용하여 하천의 형상 및 자연성을 평가한다. 해당 지수는 하천의 자연성을 판단할 수 있으나 유량이나 유사량 등과 같이 수리적 조건과 연계하여 하천환경 변화를 예측하기 어렵기 때문에, 본 연구에서는 하천의 자연성을 판단하는 지형변수들을 제안하고, 생물상과 상관관계를 분석한다. 수질 변화가 급격하지 않는(년간 변화폭이 일정한) 금강 유역의 지천 (갑천, 미호천, 논산천, 유구천 등) 중 생태계 건강성 평가 지수가 산정되어 있는 지점을 기준으로 상·하류 약 5 km 구간들을 대상으로 한다. 지형 변수로는 (항공사진을 이용한)사주 비율(사주면적/제방 내 홍수터 면적), 사주 식생비율(식생면적/사주면적)과 사주 변동량(연간 사주 이동량), 서식처 구조의 다양성(여울, 소, 웅덩이 등), 기존의 서식 및 수변환경 지수 등을 활용하고, 생물 변수로는 저서동물지수(BMI, Benthic Macroinvertebrate Index), 저서동물의 우점도, 어류생물지수(FAI, Fish Assessment Index), 어류생물지수에 활용하는 국내종의 총 종수, 여울성 저서종수, 민감종수 등을 활용한다.

• Korean Journal of Environment and Ecology
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• v.38 no.2
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• pp.143-147
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• 2024

This study aimed to determine the egg-hatching period of boreal digging frogs, Kaloula borealis, and investigate whether the incubation temperature affects the hatching period. In this study, the egg hatching was recorded based on the appearance of the tadpole. The results of this study showed that all the eggs hatched within 48 hours after spawning, with 28.1% (±10.8, n=52) hatching within 24 hours and 99.9% (±0.23, n=49) within 48 hours after spawning. The mean hatching rate of tadpoles showed significant differences depending on the difference in water temperature. The mean hatching rate between 15 and 24 hours after spawning was higher at a water temperature of 21.1 (±0.2) ℃ than at 24.1 (±0.2) ℃. The results suggest rapid hatching occurs at relatively low water temperatures because the spawning habits that spawn eggs in temporary ponds or puddles in the rainy season require rapid hatching before the puddles dry out. The results of this study are helpful for understanding the most suitable temperature conditions for the incubation of eggs of the endangered species, boreal digging frog.

• Animal Systematics, Evolution and Diversity
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• v.5 no.2
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• pp.159-171
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• 1989

Tardigrades were collected in freshwater habitats, such as rivers, streams , lakes , ponds and rice paddies at 19 different localities in Korea, during the period of May 1986 -January 1988, and seven species were identified. Dactylobiotus dispar, Macrobiotus hufellandi, M. richtersi, Hypsibius convergnes, H. dujardini, Isohypsibius granulifer, and Pseudobiotus megalonix, Five species of these except D. disparand H. dujardini, are new to Korea, which are fully described and illustrated.

• Animal Systematics, Evolution and Diversity
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• v.12 no.1
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• pp.53-59
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• 1996

The rotifers collected from various terrestrial habitats, such as mosses, lichens, dry detritus and temporary pools after rain were investigated. Five species and/or subspecies in two families of digonont rotifers were identified: Rotaria tardigrada, Macrotrachela quadricornifera quadricornifera, Macrotrachela quadricornifera scutellata, Adineta vaga minor, Adineta steineri. All these are new to Korean fauna. This is the first taxonomic study on the Korean digonont rotifers.

• Journal of Aquaculture
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• v.17 no.2
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• pp.133-138
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• 2004

Haptophyte algae were collected at 67 sites in the East Sea, the Yellow Sea and the South Sea of Korea from October 2002 to April 2003. In the Yellow Sea, the seawater samples occasionally were collected in nearshore pools during low tide events. Haptophyte algae also were observed in samples from lagoons that contained some degree of salts from the East Sea. Haptophyte algae consisted of Prymnesium sp. of. parvum, Chrysochromulina spp. and Phaeocystis globosa.

• Korean Journal of Ichthyology
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• v.19 no.2
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• pp.160-163
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• 2007

Based on six specimens collected from eastern coast of Jeju Island, Korea, Istiblennius dussumieri is described as a new Korean record representing the northernmost occurrence of the species in the Indo-Pacific Ocean. The species is characterized by having a dark spot between first and third dorsal spines, branched orbital cirrus, and lacking nape cirri. A new Korean name, "Geom-eun-jeom-be-do-ra-chi" is proposed for the species.

• Animal Systematics, Evolution and Diversity
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• v.7 no.2
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• pp.241-256
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• 1991

The systematic study of freshwater rotifers was conducted on the materials collected from 197 sites in South Korea. As a result, 9 species of Family Colurellidae were identified, 4 species ( 1 species and 3 subspeices) of which are new to the Korea fauna ; Courella uncinata uncinata, Squatinella rostrum rostrum, Lepadella patella patella, and L.elliptica. Total 165 species representing 13 families and 40 genera are now recorded by addign the species described in the present paper.

• Animal Systematics, Evolution and Diversity
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• v.6 no.2
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• pp.251-260
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• 1990

This study deals with 8 species in 6 genera including 5 new species and 2 new records from Taiwan. The new ones are Neanura kentingensis n.sp., Womersleya formosana n.sp., Crossodinthina montana n.sp., Vitronura tubercula sp., Lobella nana n.sp., and 2 new records are Pseudachorucina nepalica Yosii, 1966 and Lobella perfusa Denis., 1934. The Neanuridae fauna of Taiwan accordingly is listed as 13 species in 7 genera. The biogeographic affinities with the Japan, Vietnam and adjacent countries are discussed.