• Mycobiology
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• 제40권4호
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• pp.217-224
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• 2012

Myelochroa (Asahina) Elix & Hale is a common foliose lichen genus found on the Korean Peninsula. Since it was first recorded nearly two decades ago, no detailed taxonomic or revisionary study of the genus has been conducted. Thus, the current study was conducted to carry out a detailed taxonomic and revisionary study of Myelochroa in South Korea. This study was based on specimens deposited in the Korean Lichen Research Institute (KoLRI). Detailed taxonomic studies and a literature review confirmed the presence of twelve species of Myelochroa from S. Korea, including one new record, Myelochroa xantholepis (Mont. & Bosch) Elix & Hale. Descriptions of each species with their morphological, anatomical and chemical characters together with a key to all known Myelochroa species are presented.

• 대한본초학회지
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• 제36권3호
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• pp.25-37
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• 2021

Objectives : Herbal medicines have been used a lot traditionally in Northeast Asia. In particular, various Apiaceae plants (Umbelliferae) are widely used for medicinal purposes among countries. However, the original species designated in each pharmacopoeia standards, are sometimes different and confuse. In this study, herbal medicines in the pharmacopoeia were analyzed for Apiaceae taxa to compare the taxonomic identity and different taxonomic opinions for each country based on their local flora and recent taxonomic studies. Methods : The scientific names of herbal medicines were analyzed origins from Pharmacopoeias of Republic of Korea, Democratic People's Republic of Korea, People's Republic of China, Taiwan, and Japan. Especially, we compared their local floras, international plant scientific name database, and recently published taxonomic studies to confirm the correct scientific name. Results : The analyzed apiaceous herbal medicines in pharmacopoeias were all 21 items and 39 taxa; the highest percentage, genus Angelica (21%) and roots including rhizomes (62%) the registered genera and medicinal parts, respectively. Eleven items were in all five country's pharmacopoeias. Four items were in more than two countries' pharmacopoeias. Six items were registered in only one pharmacopoeia. Conclusions : Our research provides necessary information, e.g., corrected scientific names of original species based on taxonomic species concepts, taxonomic reviews, and figures of medicines. These results will help in the understanding of the apiaceous taxa among the five countries' pharmacopoeias. Moreover, these extensive nomenclatural reviews of authentic apiaceous taxa will help for the next revision of Korea Pharmacopoeia.

• 대한수학교육학회지:학교수학
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• 제9권3호
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• pp.427-445
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• 2007

이 논문은 7학년 학생의 곱셈추론과 관련된 분수추론을 연구한 사례연구이다. 이 논문은 또한 교수실험방법론에 의해 거둬진 질적 자료를 domain analysis와 taxonomic analysis라는 질적 분석법에 따라 분석함으로써 특정 질적 분석법들의 실제 적용사례를 자세히 보여준다. 자료 분석을 통해 세 가지 이슈가 부각되었다: 분수에 대한 시각 (조작으로써 대 결과물로써), 단위 문제, 대분수와 가분수의 관계이다. 그러한 이슈들은 첫째, 각 이슈들이 곱셈추론의 발달에 중요하며, 둘째 그 이슈들 사이의 관계가 분수추론을 통한 곱셈추론의 한 방법을 제시해 준다는 점에서 교육적인 의미를 갖는다.

• Journal of Ecology and Environment
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• 제36권4호
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• pp.391-406
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• 2013

A study on the fine structure of the genus Achnanthes species (Bacillariophyceae) is carried out at 92 stations for taxonomic purposes from January 2009 to April 2013 in Korean marine water, freshwater and brackish water. Twelve Achnanthes species are identified based on a variety of taxonomic characters by means of light microscopy and scanning electron microscopy. Of these, seven species, Achnanthes cocconeioides, A. groenlandica, A. javanica, A. kuwaitensis, A. parvula, A. pseudolongipes, and A. yaquinensis, are newly recorded in Korean waters. All 12 species are documented concerning a taxonomic key, description, distribution, seasonality, remarks and photographs. Twenty three Achnanthes taxa are identified in the survey.

• Animal Systematics, Evolution and Diversity
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• 제25권1호
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• pp.65-80
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• 2009

Pyrgotidae is a small acalyptrate family including about 370 species worldwide and little attention has been given to their systematics until recently. Latest changes in taxonomic status of some of the Korean species made this review inevitable. In the present study, the Korean pyrgotid species are reviewed with discussion of their taxonomic status. We also provide a revised key to all 14 Korean species (seven Adapsilia, three Eupyrgota, two Parageloemyia, one Porpomastix, and one Tephritopyrgota species) supplemented by digital images to facilitate accurate identification.

• 환경생물
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• 제30권2호
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• pp.151-155
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• 2012

Korean freshwater turtles are divided into native turtles, Chinemys reevesii in Geoemydidae, Pelodiscus sinensis in Trionychidae, and imported turtles, Trachemys scripta elegans, T. s. scripta, Pseudemys rubriventris and Ocadia sinensis. In this study, we determined the distribution of Korean freshwater turtles based on a field study and literature study, and considered the taxonomic position of unidentified native turtles. The study was carried out between May 2010 and November 2011 during the day time, and the capturing tool used to collect turtles consisted of net and metal frame. C. reevesii and P. sinensis were found in 16 and 11 places, respectively. C. reevesii, which inhabits the Korean peninsula, is a taxonomically controversial species, but it is presumed that the turtle belongs to Mauremys. Moreover recent taxonomic studies of the soft-shell turtle have shown that the Korean native species is P. maackii, and P. sinensis was imported from abroad and has been in the natural habitats of Korea since 1970s. The exterior shape and skeletal form of P. maackii and P. sinensis are nearly similar. However, the skin color and yellow spots on the shell could be used to distinguish the two species.

• Ocean Science Journal
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• 제40권3호
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• pp.127-143
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• 2005

The taxonomic sufficiency approach has been proposed as a surrogate for the typical analysis of species-abundance data, especially in conditions involving prominent pollution gradients. Here, we evaluate the use of taxonomic sufficiency with infralittoral macrobenthic data derived from samples taken in a moderate polluted subtropical environment in southeastern Brazil, analysing five taxonomic levels and including two functional levels throughout polychaete feeding guilds and trophic groups. The data were collected seasonally at nine stations and studied for two abundance data series (0.5 and 1.0 mm sieve mesh-size). The results showed a similar ordination pattern between the two sieve mesh-size, but with the 0.5 mm sieve data a different pattern was observed during austral summer. A slight loss of information was detected using genus, family, polychaete species and their feeding guilds as taxonomic/functional units. These results together with those of the cost! benefit ratio, suggested that the family level seemed to be sufficient to detect the impact caused by moderate pollution in this shallow-water, subtropical environment. In additional, through the use of feeding guilds, similar patterns are obtained. Correlation analysis showed that chlorophyll a, total organic matter, zinc, and chromium sediment content were the variables that best explained the biological pattern observed and not always the best correlation coefficient occurring at the species level. The feeding guild approach seems to be useful and generates interpretable results similar to those obtained with the species level of the whole macroinfauna. The results showed an important cost reduction in the sample processing, suggesting that it is possible to adopt a coarser taxonomic level monitoring program even in species-rich communities.

• Mycobiology
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• 제41권1호
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• pp.13-17
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• 2013

Hypotrachyna (Vainio) Hale is a somewhat rare lichen genus found on the Korean Peninsula. Since it was first recorded more than two decades ago, no detailed taxonomic or revisionary study of the genus has been conducted. Thus, the present study was conducted to carry out a detailed taxonomic and revisionary study of Hypotrachyna in South Korea. This study was based on specimens deposited in the Korean Lichen Research Institute (KoLRI). Detailed taxonomic studies and a literature review confirmed the presence of seven species of Hypotrachyna from South Korea, including one new record, Hypotrachyna nodakensis (Asahina) Hale. Descriptions of each species with their morphological, anatomical and chemical characters together with a key to all known Hypotrachyna species are presented.

• 한국자원식물학회지
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• 제34권3호
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• pp.223-248
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• 2021

We conducted a taxonomic study and agricultural environmental risk assessments of 41 putative invasive alien plants designated by the Ministry of Environment in 2016. In order to achieve the goal, we carried out the field survey four times including the United States, Australia, and Mexico, and investigated specimens, literature, and other information including seed morphology, classification key, and habitat conditions. In this study, we reported the taxonomic characters, ecological risk, and weed risk assessment of 41 putative invasive alien plants, and suggested significant information about 11 species to contribute to establish solutions of regulation management for putative invasive alien plants - Spirodela punctata (G.Mey.) C.H.Thomps. (Araceae), Sagittaria graminea Michx. (Alismataceae), Elodea nuttallii (Planch.) H.St. John, Hydrocharis morsus-ranae L., Stratiotes aloides L. (Hydrocharitaceae), Eichhornia azurea (Swartz) Kunth, Monochoria hastata (L.) Solms (Pontederiaceae), Aegilops tauschii Coss. (Poaceae), Myriophyllum heterophyllum Michx. (Haloragaceae), Bunias orientalis L. (Brassicaceae), and Heracleum sosnowskyi Manden. (Apiaceae).

• Animal Systematics, Evolution and Diversity
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• 제23권1호
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• pp.75-85
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• 2007

A taxonomic study was carried out on the Perinereis nuntia species group of Korea by using morphological and molecular data (mitochondrial cytochrome c oxidase subunit I: mtCOI). Two species, P. mictodonta (Marenzeller, 1879) and P. wilsoni (Glasby and Hsieh, 2006), are recognized and redescribed. In this study, mtCOI gene showed a good resolution as molecular marker for species identification of the P. nuntia species group of Korea.