scholarly journals Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

Phytotaxa ◽  
2021 ◽  
Vol 528 (3) ◽  
pp. 149-179
Author(s):  
GYEONGJE JOH
Keyword(s):  
South Korea ◽  
New Records ◽  
Morphological Features ◽  
Jeju Island ◽  
Floristic Study

Cocconeis Ehrenberg species (Bacillariophyceae) are documented from benthic samples collected along the Seogwipo coast of Jeju Island, the southernmost region of Korea. The 25 taxa were identified from seaweeds, sand, and sediments, their morphological features are described, and the distributions of the taxa are summarized. Three groups of Cocconeis e.g., Cocconeis dirupta var. flexella, C. pseudomarginata var. intermedia, Cocconeis scutellum, and their similar taxa were dominant in this area. Many other Cocconeis that grows mainly along the coasts of warmer oceans were also identified. The floristic study reveals the existence of rare or retrieved species that were not well known until recently, and expands some of their geographical distributions; Cocconeis cf. callosa, C. conspicua, C. cyclophora var. decora, C. cyclophora var. meisteri, C. delicata, C. schmidtii, C. shikinensis, C. suzukii, C. voigtii. In this floristic study, 14 Cocconeis taxa are new records in South Korea.

scholarly journals New records of pyrenocarpous lichens from Jeju Island, South Korea

Mycotaxon ◽  
2018 ◽  
Vol 133 (1) ◽  
pp. 127-139 ◽  
Author(s):  
Dong Liu ◽  
Josef P. Halda ◽  
Soon-Ok Oh ◽  
Chan-Ho Park ◽  
Jae-Seoun Hur
Keyword(s):  
South Korea ◽  
New Records ◽  
Jeju Island ◽  
Pyrenocarpous Lichens

Libnotes crane flies (Diptera: Limoniidae) from Jeju Island (South Korea)

Zootaxa ◽  
2018 ◽  
Vol 4483 (2) ◽  
pp. 375
Author(s):  
SIGITAS PODENAS ◽  
HYE-WOO BYUN
Keyword(s):  
South Korea ◽  
New Records ◽  
Identification Key ◽  
Jeju Island ◽  
Crane Flies

The Korean species of Libnotes (Laosa) Edwards, 1926 and L. (Libnotes) Westwood, 1876 from Jeju Island are taxonomically revised. L. (Laosa) charmosyne (Alexander, 1958) and L. (Libnotes) divaricata (Alexander, 1924) are new records for South Korea and L. (Libnotes) byersiana n. sp. is described. An identification key for all Korean Libnotes, redescriptions and illustrations of the three currently known Jeju species are presented. 

scholarly journals Comparison of Forest Inventory Methods at Plot-Level between a Backpack Personal Laser Scanning (BPLS) and Conventional Equipment in Jeju Island, South Korea

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 308
Author(s):  
Chiung Ko ◽  
Seunghyun Lee ◽  
Jongsu Yim ◽  
Donggeun Kim ◽  
Jintaek Kang
Keyword(s):  
South Korea ◽  
Forest Inventory ◽  
Laser Scanning ◽  
Jeju Island ◽  
Time Data ◽  
Non Invasive ◽  
Coniferous Plantation ◽  
Standing Trees ◽  
Time Required ◽  
Inventory Method

In recent years, light detection and ranging (LiDAR) has been increasingly utilized to estimate forest resources. This study was conducted to identify the applicability of a LiDAR sensor for such estimations by comparing data on a tree’s position, height, and diameter at breast height (DBH) obtained using the sensor with those by existing forest inventory methods for a Cryptomeria japonica forest in Jeju Island, South Korea. For this purpose, a backpack personal laser scanning device (BPLS, Greenvalley International, Model D50) was employed in a protected forest, where cutting is not allowed, as a non-invasive means, simultaneously assessing the device’s field applicability. The data collected by the sensor were divided into seven different pathway variations, or “patterns” to consider the density of the sample plots and enhance the efficiency. The accuracy of estimating the variables of each tree was then assessed. The time spent acquiring and processing real-time data was also analyzed for each method, as well as total time and the time required for each measurement. The findings showed that the rate of detection of standing trees by LiDAR was 100%. Additionally, a high statistical accuracy was observed in pattern 5 (DBH: RMSE 1.22 cm, bias—0.90 cm, Height: RMSE 1.66 m, bias—1.18 m) and pattern 7 (DBH: RMSE 1.22 cm, bias—0.92 cm, Height: RMSE 1.48 m, bias—1.23 m) compared to the results from the typical inventory method. A range of 115–162.5 min/ha was required to process the data using the LiDAR, while 322.5–567.5 min was required for the typical inventory method. Thus, the application of a backpack personal LiDAR can lead to higher efficiency when conducting a forest resource inventory in a coniferous plantation with understory vegetation. Further research in various stands is necessary to confirm the efficiency of using backpack personal laser scanning.

scholarly journals Conservation, Restoration, and Sustainable Use of Biodiversity Based on Habitat Quality Monitoring: A Case Study on Jeju Island, South Korea (1989–2019)

Land ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 774
Author(s):  
Hyun-Jung Hong ◽  
Choong-Ki Kim ◽  
Hyun-Woo Lee ◽  
Woo-Kyun Lee
Keyword(s):  
South Korea ◽  
Habitat Quality ◽  
Sustainable Use ◽  
Habitat Type ◽  
Biodiversity Loss ◽  
Well Being ◽  
Jeju Island ◽  
Natural Habitats ◽  
Invest Model ◽  
Aichi Biodiversity Targets

Biodiversity loss is progressing despite biodiversity being essential for human survival, prosperity, and well-being. Conservation, restoration, and sustainable use of the habitat, given that its change is the most prominent factor causing the deterioration of biodiversity, represents a highly effective way of securing biodiversity. Therefore, we assessed and monitored habitat quality as a proxy for biodiversity with habitat quantity in Jeju Island, South Korea. We used an InVEST model with data on the habitat type, suitability, sensitivity, accessibility, and threat factors. Natural habitats throughout Jeju had rapidly decreased in area by 24.9% from 1989 to 2019, and this change contributed to the degradation of habitat quality by 15.8%. We provided significant evidence on the critical degradation of habitat for a long period of over 30 years and highlighted the urgent need for policies and behaviors that enhance biodiversity. We proposed appropriate strategies to prompt people to conserve better, restore effectively, and use biodiversity sustainably. We expect that our findings will provide scientific and evidence-based guidance for policy-making on biodiversity enhancement and will further support achievement of the Sustainable Development Goals and Aichi Biodiversity Targets, in addition to compliance with the New Deal for Nature and People.

A new species and two new records of Amanita (Amanitaceae; Basidiomycota) from South Korea

Phytotaxa ◽  
2020 ◽  
Vol 451 (1) ◽  
pp. 21-33
Author(s):  
JONG WON JO ◽  
YOUNG-NAM KWAG ◽  
HYUNG SO KIM ◽  
HYUN LEE ◽  
SANG-KUK HAN ◽  
...  
Keyword(s):  
New Species ◽  
South Korea ◽  
New Records ◽  
Monophyletic Clade ◽  
First Report ◽  
A New Species

A new species of Amanita sect. Roanokenses, A. brunneofolia, from South Korea, is described based on morphological and molecular evidences. The species is characterized by medium- to large-sized basidiomata, a greenish white pileus covered with brownish, floccose pyramidal volval remnants, an appendiculate margin, reddish brown lamellae, a long radicating stipe, and ellipsoid to elongate amyloid basidiospores. Based on both nrLSU and combined dataset (nrLSU, rpb2 and tef1-α), A. brunneofolia formed a monophyletic clade and clearly separated from other Amanita species. In addition, we describe two other Amanita species in A. sect. Roanokenses, namely, A. caojizong and A. sphaerobulbosa. This is the first report of these species for South Korea.

Geochemistry of anorthositic xenolith and host tholeiite basalt from Jeju Island, South Korea

2013 ◽  
Vol 18 (2) ◽  
pp. 125-135 ◽  
Author(s):  
Seol Baek ◽  
Sung Hi Choi ◽  
Seung-Gu Lee ◽  
Seung Ryeol Lee ◽  
Hyo Min Lee
Keyword(s):  
South Korea ◽  
Jeju Island ◽  
Tholeiite Basalt

New records of Pseudotachidiidae from South Korea, including a key to species of the Pseudomesochrinae (Copepoda: Harpacticoida)

Zootaxa ◽  
2021 ◽  
Vol 5051 (1) ◽  
pp. 387-422
Author(s):  
JONG GUK KIM ◽  
JIMIN LEE ◽  
RONY HUYS
Keyword(s):  
South Korea ◽  
New Records ◽  
East Asian ◽  
Relative Length ◽  
Valid Species ◽  
Key To Species ◽  
General Shape ◽  
Abdominal Somite ◽  
Western Norway ◽  
Female Genital

Two species of the marine harpacticoid family Pseudotachidiidae (Copepoda) are reported from subtidal sediments in the Southern Sea of Korea. Psammis wellsi sp. nov. (Danielsseniinae) is most closely related to P. longisetosa Sars, 1910 but differs from its European congener in the ventral ornamentation of the female genital double-somite, the dorsal ornamentation of the second abdominal somite in the male, the armature of the proximal endite of the maxillary syncoxa, the relative setal lengths and general shape of the female P5, and the relative length of the inner seta of the male P5 endopodal lobe and P6. The female of Pseudomesochra tatianae Drzycimski, 1968 is redescribed in detail, constituting the only other record of the species since its discovery at the type locality in western Norway. East Asian records of members of the four subfamilies currently recognized in the Pseudotachidiidae are summarized. Published and other records of the 23 described species in the Pseudomesochrinae are collated and their armature patterns of P1–P5 are tabulated and corrected where necessary. Pseudomesochra affinis (Sars, 1920) is removed from its synonymy with P. longifurcata T. Scott, 1902 and formally reinstated as a valid species. An updated female-based key to the 19 valid species of Pseudomesochra T. Scott, 1902 and four species of Keraia Willen & Dittmar, 2009 is presented.  

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