• Journal of Marine Bioscience and Biotechnology
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• v.9 no.2
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• pp.22-29
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• 2017

A unicellular green alga was axenically isolated from the Port of Jeongja, Ulsan, Korea. Morphological, molecular, and biochemical analyses revealed that the isolate belonged to Heterochlorella luteoviridis. This is the first report of this species in Korea. The microalgal strain was named as H. luteoviridis MM0014 and its growth, lipid composition, and biomass properties were investigated. The strain thrived over a wide range of temperatures ($5-30^{\circ}C$) and withstood up to 0.5 M NaCl. The results of gas chromatography/mass spectrometry analysis showed that the isolate was rich in nutritionally important polyunsaturated fatty acids. Its major fatty acids were linoleic acid (35.6%) and ${\alpha}$-linolenic acid (16.2%). Thus, this indigenous marine microalga is a potential alternative source of ${\omega}3$ and ${\omega}6$ polyunsaturated fatty acids, which are currently obtained from fish and plant oils. Ultimate analysis indicated that the gross calorific value was $19.7MJ\;kg^{-1}$. In addition, the biomass may serve as an excellent animal feed because of its high protein content (51.5%). Therefore, H. luteoviridis MM0014 shows promise for applications in the production of microalgae-based biochemicals and biomass feedstock.

• Ocean and Polar Research
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• v.40 no.2
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• pp.59-67
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• 2018

This study was conducted to understand the distribution and changes of macrobenthos on rocky intertidal areas around Taean thermoelectric power plant, Also, the purpose of this study was to produce a base-line data on the changes in water temperature due to the operation of the power plant and to understand its thermal impact on the macrobenthic community on intertidal rocky bottoms. A field survey was seasonally conducted at 3 rocky intertidal sites around the Taean thermal power plant. There was no seasonal difference in the community parameters such as number of species, mean density, biomass and species diversity during the study period. The major dominant species were Chthamalus challenger, Littorina brevicula, Crassostrea gigas. In comparison with previous study, thermal discharge in the study area did not significantly affect the distribution of dominant species. The structure of the macrobenthic community revealed that there were showed 3 different faunal groups depending on the difference in the mean density of major dominant species. The result of SIMPER analyses to determine which species were the main contributors to the differences between each community, C. challenger, Lottia spp. And Mytilus galloprovincialis, etc., revealed that there was showed a significant difference between each group. The abundance of M. galloprovincialis, showed a significant difference between faunal groups.

• Korean Journal of Plant Taxonomy
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• v.40 no.1
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• pp.16-26
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• 2010

The petiole anatomy of three sections (sects. Calospira, Chamaedryon, and Spiraria) in the genus Spiraea (Rosaceae), which are distributed/cultivated in Korea, was studied and described in details. The vascular bundle system of the distal, medial, and proximal parts of the petiole were studied using LM with the aim of documenting any differences in vascular anatomy. Significant variation of anatomical characters was found in petiole shape (dichotomy, lens or subcircular in outline), presence of two distinct lateral wings, the thickness of epidermis, number of vascular bundles, length of ventral axis, length of dorsiventral axis, width of median vascular bundle, and length of median vascular bundle. All features were compared and we concluded that petiole anatomical characters can be useful for providing diagnostic features to distinguish the studied taxa. A key for identifying the Spiraea taxa in Korea based on their petiole anatomical characters is also provided.

• Korean Journal of Plant Taxonomy
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• v.37 no.2
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• pp.109-113
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• 2007

Six taxa described by Miki were lectotypified using the specimens deposited in OSA; Myriophyllum oguraense, Najas oguraensis, Najas tenuicaulis, Ruppia truncatifolia, Utricularia minor var. multispinosa and U. tenuicaulis.

• Korean Journal of Plant Taxonomy
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• v.37 no.4
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• pp.335-349
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• 2007

Genus Cirsium (Asteraceae) from Japan is revised based on both field and herbarium examinations. As a result it is clarified that the Cirsium flora of Japan is consisted of more than 120 species and that several groups are considerably diversified in the Japanese Archipelagoes. Here two instances will be shown for the diversification. The northern maritime group (sect. Onotrophe subsect. Littoralicola), a recently recognized group, is differentiated in the maritime regions of Honshu and Hokkaido. The Cirsium kagamontanum group (sect. Onotrophe subsect. Reflexae), the most diversified group in Japan, is differentiated mainly in the cool temperate zone of Honshu and Shikoku.

• Korean Journal of Plant Taxonomy
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• v.41 no.3
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• pp.253-258
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• 2011

Prunus speciosa (Koidz.) Nakai belonging to Prunoideae of Rosaceae, a species previously unrecorded in Korean flora, is described. Prunus speciosa (Koidz.) Nakai is similar to Prunus sargentii Rehder and Prunus jamasakura Siebold ex Koidz., but different because it has toothed lobes of calyx tubes with the apex of leaf serrations aristate. This species is naturalized widely in the eastern parts of Jeju Island but is endemic to Japan.

• Korean Journal of Plant Taxonomy
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• v.41 no.3
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• pp.267-270
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• 2011

A new species of Hedysarum (Fabaceae, Hedysareae) was found in Tibet, China. This new species, Hedysarum hirtifoliolum, belongs to sect. Hedysarum and is readily distinguishable in having greenish yellow flowers, pubescent above surface of leaflets and transversely obovate loments. So far, it is collected from only one locality in Tibet.

• Journal of Plant Biology
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• v.17 no.1
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• pp.22-32
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• 1974

In this study, phytoplanktons collected monthly at Paroho from January till April in 1968 and from May till August in 1973. The Diatom samples were identified and classified by Engler's Classification System. It resutled in 1 phyla, 1 class, 2 subclasses, 5 orders, 8 families, 18 genera, 41 species, 11 varieties and 2 forma. Of them, 8 species, 6 varieties and 2 formas are new to Korea.

• Journal of Plant Biology
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• v.17 no.2
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• pp.99-105
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• 1974

Author has studied and reported on taxonomy of Korean sedges, using gross morphology, anatomy and epidermal patterns of the leaf blades(1969, 1971, 1973, 1974). This paper is the 6th report of epidermal patterns of leaf blade on sedges and includes 5 genera, Eriophorum, Fuirena, Kobresia, Rhynchospora and Scirpus. The author proposed to find epidermal patterns of leaf blades as an important taxonomic characteristic of sedges classification. The result of this study, the elements of leaf epidermis, subsidal cells, silica body, cell wall of long cell, prickles, and arrangement of the elements are considered to be significant characteristics for the identification and classification of sedge.

• Journal of Plant Biology
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• v.30 no.2
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• pp.151-170
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• 1987

Taxa of genus Callicarpa in Korea were described taxonomically and studied interspecific relationships, based on the leaf length, leaf width, peduncle length, fruit width and geograhic distribution. Among 12 taxa reported previously in Korea, 3 forms of C. japonica were unifed to original species, C. japonica var. glabra was reserved, Whereas C. shirasawana was not distributed in Korea. As a result, 7 taxa belonging to 3 species, 4 varieties of genus Callicarpa remained. C. japonica complex is considered to be more advanced among the species compared with the bract shapes.