• Journal of Ecology and Environment
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• v.42 no.4
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• pp.240-258
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• 2018

Background: Several investigations carried out from large brackish lagoons in South Korea. However, no studies have yet examined phytoplankton in lagoons that changed to freshwater, such as Cheonjin Lake. The present study examined the algae from Cheonjin Lake. Methods: Samples were collected at monthly inetrvals from May 2017 to April 2018, from the surface layer using a plankton net (mesh size $20{\mu}m$), and sequeezing submerged macrophytes. Microscopic examinations were conducted at a magnification of 200 to 1000x using a Zeiss microscope (Axio Imager. A2), and photographs were taken with an AxioCam HRC camera. Silica-scaled samples of Chrysophyta for SEM were placed on coverglass, air dried, coated with gold, and then examined with a Hitachi SV8220 SEM. Results: A total of 376 taxa from six major algal groups (Chlorophyta, Chrysophyta, Euglenophyta, Cyanophyta, Dinophyta, and Cryptophyta) were identified. Among these algae, 28 taxa of desmids, 9 taxa of Euglenophyceae, 4 taxa of Chlorophyceae, 2 taxa of Chrysophyceae, and 1 taxon of Xanthophyceae are reported for the first time in Korea. A new species, Cosmarium hexagonum sp. nov was described. The phytoplankton communities were characterized by an abundance of Desmids (within Charophyceae) accounted for 148 taxa from 22 genera. Species richness were particularly high in the Autumn. Conclusion: In this study, a total 376 taxa of 148 desmids (Charophyceae), Chlorophyceae (103 taxa), Chrysophyceae (53 taxa), Euglenophyta (49 taxa), Dinophyta (8 taxa), and Cryptophyta (2 taxa) were identified from Cheonjin Lake. Twenty-eight taxa of desmids including a new species (Cosmarium hexagonum sp. nov.), 9 taxa of Euglenophyceae, 4 taxa of Chlorophyceae, 2 taxa of Chrysophyceae, and 1 taxon of Xanthophyceae were newly recorded in Korea.

• Journal of Ecology and Environment
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• v.46 no.2
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• pp.99-110
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• 2022

Background: Many investigations on phytoplankton from the Nakdong River carried out. However, since the weirs were constructed, only changes in phytoplankton biomass and dominant species have been restrictively studied in phytoplankton investigations in the Nakdong River. Added to this, any investigation on the phytoplankton flora has not been done in the Nakdong River. The aim of this study is to elucidate the characteristics of phytoplankton communities in the Nakdong River with the weirs built in it. Results: We observed a total of 103 taxa of Euglenophytes belonging to 8 genera from middle-lower part of the Nakdong River. The genus Trachelomonas was the most abundant group making up 40 taxa, followed Lepocinclis (20), Phacus (17), Strombomonas (14), Euglena (5), Colacium (3), Monomorphina (3) and Menoideum (1). Among them, a total of 22 taxa including Colacium (1), Lepocinclis (8), Phacus (4), Strombomonas (4) and Trachelomonas (5) were reported for the first time in Korea, and 86 taxa including those new to Korea were first recorded in the Nakdong River. All the species are illustrated with photomicrographs, and new to Korean species briefly discussed with regard to their taxonomy together with photomicrographs. Conclusions: The present study, a total of 22 taxa including one species of Colacium, 8 taxa of Lepocinclis, 4 taxa of Phacus, 4 taxa of Strombomonas and 5 taxa of Trachelomonas were reported for the first time in Korea, and 86 taxa including those new to Korea were first recorded in the Nakdong River.

• Korean Journal of Environmental Biology
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• v.35 no.3
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• pp.305-318
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• 2017

Freshwater algae (green algae, blue-green algae and flagellated algae) were collected at 103 freshwater sites (including lakes, ponds, swamps, streams, and rivers) throughout South Korea March 2015-October 2016, and were identified using light microscopy. A total of 345 taxa in 2015 and 329 taxa in 2016 were identified and among them, 6 taxa in 2015 and 8 taxa in 2016 were new recorded species in Korea; The new recorded species were Characiopsis malleolus in Xanthophyceae, Phacus mammillatus in Euglenophyceae, Epipyxis utriculus and Lagynion ampullaceum in Chrysophyceae, Bicosoeca planctonica in Bicosoecophyceae and Salpingoeca frequentissima in Choanoflagellatea in 2015, and were Ankistrodesmus bernardii and Quadrigula korsikovii in Chlorophyceae, Didymocystis planctonica in Treubouxiophyceae, Spirulina nodosa, Raphidiopsis curvata and Geitlerinema claricentrosum in Cyanophyceae and Lagynion macrotrachelum in Chrysophyceae, Bicosoeca oculata in Bicosoecophyceae and Salpingeoca rosetta in Choanoflagellatea in 2016.

• Korean Journal of Plant Taxonomy
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• v.39 no.3
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• pp.143-169
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• 2009

To confirm the taxonomic identity of taxa described by $L{\acute{e}}veill{\acute{e}}$, H. H. A, a French plant taxonomist, in the serial papers of Decades plantarum novarum based on the collections of Fathers Faurie and Taquet from the Korean peninsula, we examined the numerous references that contained taxonomic opinions about $L{\acute{e}}veill{\acute{e}}^{\prime}s$ taxa. Among them, 146 taxa were confirmed as conspecific with other existing taxa. Of them, 79 taxa, including Ajuga devestita, were listed as a synonym of only one species. Sixty-seven taxa, including Bidens robertianifolia, were listed as synonyms of two or more species according to taxonomists. Eight taxa, including Aconitum coreanum, were considered illegitimate names because of later homonym, or other problems. Five taxa, including Rhododendron hallaisanense, were treated either as distinct or conspecific taxa depending on taxonomists.

• Journal of Ecology and Environment
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• v.36 no.4
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• pp.339-346
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• 2013

The present study summarized the occurrence, distribution and autecology of 18 taxa in the class Euglenophyceae collected from several swamps, reservoir and mountain wetlands in the South Korea from 2009 to 2013. This paper deals with 18 taxa consisting of 3 taxa of Colacium Ehrenberg, 2 taxa of Phacus Dujardin, 13 taxa of Trachelomonas Ehrenberg, which are recorded for the first time in Korean freshwater algal flora.

• Korean Journal of Plant Taxonomy
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• v.51 no.1
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• pp.18-32
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• 2021

Here, 15 taxa of genus Fissidens Hedw. are reported as new to the moss flora of Korea: F. bryoides var. esquirolii, F. closteri subsp. kiusiuensis, F. crispus, F. curvatus, F. enervis, F. flabellulus, F. ganguleei, F. gracilifolius, F. gymnandrus, F. incurvus, F. longisetus, F. pusillus, F. takayukii, F. viridulus, and F. wichurae. The list of Fissidens in Korea, consisting of 26 taxa previously, is updated to 38 taxa by adding 15 taxa and excluding three taxa. Descriptions, taxonomic notes with diagnoses, in situ and microscopic photographs of the unrecorded species, and taxonomic keys of four sections belonging to the subgen. Fissidens are provided.

• Journal of Plant Biology
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• v.17 no.1
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• pp.33-35
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• 1974

This paper is proposed to describe a new species and two formae of flowering plants from central Korea. The taxa of new plants are as follow: Iris odaesanensis Y. Lee, sp. nov. Iris rossii Baker form. alba Y. Lee, form. nov. Ajuga multiflora Bunge form. rosea Y. Lee, form. nov.

• Journal of Plant Biology
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• v.17 no.2
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• pp.84-86
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• 1974

This paper is proposed to describe a new species and two formae offlowering plants from central and southern Korea. The taxa of new plants are as follows: Miscanthus chejuensis Y. Lee, sp. nov. Rhododendron schlippenbachii Maxim. form. albiflorum Y. Lee, form. nov. Scilla scilloides (Lindl.) Druce form. albida Y. Lee, form. nov.

• Korean Journal of Plant Taxonomy
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• v.53 no.2
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• pp.79-101
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• 2023

Following recent taxonomic, distributional, and nomenclatural revisions, an updated checklist of endemic plants on the Korean Peninsula is needed. This study provides an updated checklist of vascular plants endemic to the Korean Peninsula and describes their distribution within administrative provinces. The revised checklist includes 373 endemic taxa (304 species, six subspecies, 49 varieties, and 14 nothospecies) from 179 genera and 64 families, representing 9.5% of the total native flora of the Korean Peninsula. Asteraceae (41 taxa), Ranunculaceae (29 taxa), Liliaceae s.l. (24 taxa), and Rosaceae (22 taxa) were the most widely represented families. Compared with the most recent checklist published in 2017, 39 taxa were excluded from the checklist; one taxon was excluded because it did not have a valid published name, seven taxa were excluded because their natural habitats extended to neighboring countries, four taxa were excluded because they were treated as a rank form, and 27 taxa were excluded because they had been identified as heterotypic synonyms of taxa distributed outside of the Korean Peninsula. Fifty-two new taxa were included based on the literature. This checklist will help to focus conservation efforts and provide a framework for research, protection, and policy implementation related to these endemic taxa.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.15 no.4
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• pp.61-80
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• 2012

This study is to offer the basic data for restoration and conservation of wetland ecosystem by surveying and analysing the flora distributed in the Binae marsh, Namhan River, Chungju-si. The flora in the Binae marsh were verified 204 taxa including 48 families, 152 genera, 179 species, 23 varieties and 2 forms. In flora, pteridophyta were 2 taxa including 1 family, 1 genus and 2 species, among angiospermae, dicotyledonae were 153 taxa including 37 families, 110 genera, 138 species, 13 varieties and 2 forms and monocotyledonae were 49 taxa including 10 families, 41 genera, 39 species and 10 varieties. In the result of classifying the life form of flora, megaphanerophytes (M), nanophanerophytes (N) and chamaiphytes (Ch) were each 9 taxa (4.4%), 37 taxa (18.1%) of hemicryptophytes (H), 19 taxa (9.3%) of geophytes (G), 97 taxa (47.6%) of therophytes (Th) and 24 taxa (11.8%) of hydrophytes (HH). The rare plant designated by Korea Forest Service was 1 taxa (Aristolochia contorta), and the endemic plant was 1 taxa (Salix koriyanagi) too. The specific plants by floristic region were 6 taxa. From among these, the species of degree I were 5 taxa including Salix chaenomeloides, Aristolochia contorta, Artemisia selengensis, Cirsium pendulum and Vallisneria natans, and degree III was 1 taxa including Alisma orientale. The naturalized plants were 45 taxa and the invasive alien plants were 3 taxa including Sicyos angulatus, Ambrosia artemisiifolia and Ambrosia trifida. The naturalized index (NI) was about 22.1%, 16.1% of urbanized index (UI) and 27.3% of disturbed index (DI). The extinct species by construction were 17 taxa including Persicaria sagittata, Typha orientalis, Zizania latifolia and so forth. The new-occured species were 14 taxa including Brassica juncea, Thlaspi arvense, Carduus crispus and so forth. The important species among the extinct species were Aristolochia contorta, Alisma orientale and Vallisneria natans.