• 생태와환경
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• 제54권1호
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• pp.12-23
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• 2021

어류군집은 자연적인 환경 변화뿐만 아니라 인위적 교란에 민감하게 반응하기 때문에, 어류상 및 군집 분석을 통해 수생태계의 서식처 건강성을 종합적으로 평가할 수 있다. 본 연구는 섬진강 수계 본·지류 총 14개 지점을 대상으로 어류상 및 피라미의 전장-체중 관계를 파악하기 위해 2018년 7월부터 2019년 5월까지 어류 조사를 실시하였다. 그 결과 채집된 어류는 한국고유종 19종과 법적보호종 2종을 포함하여 14과 49종으로 확인되었다. Bray-Curtis 유사도에 따르면, 14개 지점은 어류군집 구성에 따라 크게 A, B 두 개의 그룹과 그룹 내 속하지 않는 2개의 지점(그룹 C, D)으로 나뉘었다. 특히, 그룹 A와 B 간에 유의한 차이가 존재하였으며(ANOSIM R=0.722, p=0.002), 참갈겨니(8.55%), 배스(6.90%), 블루길(4.90%)이 두 그룹의 차이에 기여한 것으로 나타났다. 그룹 A는 외래종인 배스, 블루길의 출현이 높게 나타났으며, 그룹 B는 국내 하천 생태계 최 우점종인 피라미와 참갈겨니의 출현이 주요하였다. 본 조사에서 우점한 피라미를 대상으로 전장-체중 관계식에 의한 지점별 회귀계수 b값은 2.82~3.80까지 나타나 지점별로 다양한 성장도를 나타냈다. 따라서 본 연구는 섬진강 수계의 전반적인 어류상과 피라미를 바탕으로 어류의 성장도를 파악할 수 있는 기초자료로서 활용될 수 있을 것이다.

• 한국환경생태학회지
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• 제37권5호
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• pp.392-402
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• 2023

본 연구는 천관산도립공원의 식물사회 특성을 파악하고 지속가능한 식생관리와 도립공원 연구에 필요한 기초자료를 구축하기 위해 수행되었다. 천관산도립공원을 대상으로 126개의 방형구를 설치하여 출현한 목본수종을 조사하였고 희소종을 제외한 종을 중심으로 종간결합분석을 실시하였다. 그 결과를 Gephi 0.10 프로그램을 이용하여 소시오그램으로 작성하였으며, 인접한 노드 간 그룹을 나누어주는 모듈화 분석과 네트워크 중심성 및 구조분석을 실시하였다. 분석 결과, 조사된 방형구 내 출현빈도는 청미래덩굴이 가장 높게 나타났고, 졸참나무, 사스레피나무, 때죽나무, 조릿대 등의 순으로 높게 나타났다. 희소종을 제외한 69종에 대해 종간결합분석을 실시하였고, 양성결합을 토대로 식물사회네트워크를 시각화하였다. 식물사회네트워크는 69개의 노드와 396개의 연결선으로 구성되어 있으며, 한 수종이 평균 약 17.9종과 종간결합을 맺으며 2.3단계 만에 서로 간 연결되었다. 69종은 모듈화 분석을 통해 3개의 그룹으로 나뉘었으며, 1그룹은 주로 상록활엽수 및 난온대 지역에서 출현하는 수종으로 이루어졌으며, 2그룹은 낙엽활엽수 위주로 이루어졌다. 3그룹은 주로 햇빛이 잘 들고 건조한 양지에서 잘 자라는 수종으로 나뉘었다.

• 수산해양교육연구
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• 제29권1호
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• pp.257-269
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• 2017

The occurrence variations of decapods by season and depth off Oryuk Islets, Busan were investigated at seven stations in April and October 2009, July 2010 and January 2011. Decapods were collected by SCUBA diving at 5 m and 10 m depths. 46 species belonging to 18 families in 3 orders were identified. Pilumnus minutus, Pugettia intermedia, Pachycheles stevensii, and Paguristes japonicus were dominant species, comprising 73.0% of total decapods. P. minutus and P. intermedia were abundant in all seasons (except summer) while P. stevensii and P. japonicus were abundant in fall and summer. Dominant species were divided into three groups (resident species, seasonal species and temporary species) on the basis of their occurrence patterns. P. minutus and P. intermedia were resident species while P. stevensii, P. japonicus were temporary species. The species number, density and biomass of decapods were fluctuated by seasons. They were highest in fall and lowest in winter. This study implied that the variations of species number and density of decapods were significantly related with seasonal change of water temperature.

• Animal cells and systems
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• 제16권6호
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• pp.488-497
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• 2012

A DNA barcode based on 648 bp of cytochrome c oxidase I (COI) gene aims to build species-specific libraries for animal groups. However, it is hard to recover full-length (648 bp) barcode gene from environmental fecal samples due to DNA degradation. In this study, we designed a new primer set (K_Bird), which amplifies a 226 bp fragment targeted an inner position of full-length COI barcode based on 102 species of Korean birds to improve amplification success, and we attempted to identify bird species from 39 avian fecal samples collected during 4 months from Jinan, South Korea. Simultaneously, we conducted a dietary analysis using a universal DNA mini-barcode (Uni_Minibar) from same fecal samples. In silico analysis on newly designed mini-barcode represented that genetic distances were 0.5% in species and 9.1% in genera. Intraspecific variations of 149 species out of 174 species (86%) between Korea and North America were within the threshold (5.3% threshold in this study). From environmental fecal samples collected in Jinan, we identified seven avian species, which have high similarity (99-100%) with registered COI sequences in GenBank. Eight kinds of prey species, such as moth, spider, fly, and dragonfly, were identified in dietary analysis. We suppose that our strategy applying mini-barcode for environmental fecal samples, might be a useful and convenient tool for species identification and dietary analysis for birds.

• Mycobiology
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• 제46권3호
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• pp.177-184
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• 2018

The genus Trichoderma (Hypocreaceae, Ascomycota) consists of globally distributed fungi. Among them, T. harzianum, one of the most commonly collected Trichoderma species, had been known as a polyphyletic or aggregate species. However, a total of 19 species were determined from the polyphyletic groups of T. harzianum. Thus, we explored Korean "T. harzianum" specimens that were collected in 2013-2014. These specimens were re-examined based on a recent study with translate elongation factor 1-alpha ($EF1{\alpha}$) sequences to reveal cryptic Trichoderma species in Korea. As a result, four different species, T. afroharzianum, T. atrobruneum, T. pyramidale, and T. harzianum, were identified. Except T. harzianum, the other three species have not been reported in Korea. In this work, we describe these species and provide figures.

• Journal of the Korean Institute of Landscape Architecture International Edition
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• 제2호
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• pp.109-113
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• 2004

It is important to consider urban parks and greenery not only from the viewpoint of amenity or aesthetics but also from the viewpoint of biodiversity. In this study, we focused on bryophytes (mosses), and analyzed how existence of artificial structures in urban greeney, such as concrete curbs and stone walls, affect species diversity of bryophytes. Kyoto Gyoen in Kyoto City, western Japan, was selected as the study site. In consideration of kinds of substrates on which bryophytes grow, microhabitats of Kyoto Gyoen were divided into ten types including concrete curbs and stone walls. In each type of microhabitats, we selected the area where bryophyte diversity was highest, and established a quadrat for bryophyte flora survey. Our results showed that the number of bryophyte species and growth forms and the value of diversity indices on concrete curbs or stone walls were higher than the averages of those. The bryophyte species were divided into the four groups by TWINSPAN as follows: Group A (epiphyte species), Group B (rocky species), Group C (roadsides, grassland or forest species), and Group D (waterside species). Bryophytes classified into Group B (rocky species) were mainly recorded on concrete curbs or stone walls. It was considered that the existence of artificial structures (concrete curbs and stone walls) provided favorite habitats for the bryophytes classified into Group B (rocky species), which mainly grows on concrete or rocks, and enhanced species diversity of bryophytes in Kyoto Gyoen.

• Journal of the korean society of oceanography
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• 제32권4호
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• pp.202-207
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• 1997

Species composition and abundance of fish larvae were studied from May 1988 through August 1989 in the Han River Estuary and adjacent Kyunggi Bay, Korea. Of 23 taxa identified, Coilia nasus, llisha elongata, and Cyprinidae spp. were dominated. Maximum density (3,5771/1,000m)$^3$ occurred in August 1988 and minimum (3/1,m$^3$) in February 1989. O1igo- ormesohaline species dominated during ebb tides while polyhaline species during flood tides. Correspondence analysis revealed that three distinctive species groups; oligohaline species, Coilia nasus, Ilisha elongata and Cyprinidae spp., which dominated at both channels of Kwanghwa Island (stations 1, 2), mesohaline species, Sardinella zunasi and Gobiidae spp., at the mouth of Yeomha Channel (station 3), and polyhaline species, Engraulis japonicus and Syngnathus schlegeli, in the middle of Kyunggi Bay (station 4). Coilia nasus was the most abundant species and reported first time in the study area. Given the species composition and density of fish larvae, the Han River Estuary is considered to be a major spawning and nursery ground for brackish water species such as Coilia nasus, Ilisha elongata and some Cyprinidae spp.

• 한국수산과학회지
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• 제54권4호
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• pp.489-497
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• 2021

Climate change is affecting the evolutionary trajectories of individual species and ecological communities, partly through the creation of new species groups. As population shift geographically and temporally as a result of climate change, reproductive interactions between previously isolated species are inevitable and it could potentially lead to invasion, speciation, or even extinction. Four species of abalone, genus Haliotis are present along the Korean coastline and these species are important for commercial and fisheries resources management. In this study, genetic markers for fisheries resources management were discovered based on genomic information, as part of the management of endemic species in response to climate change. Two thousand one hundred and sixty one single nucleotide polymorphisms (SNPs) were discovered using genotyping-by-sequencing (GBS) method. Forty-one SNPs were selected based on their features for species classification. Machine learning analysis using these SNPs makes it possible to differentiate four Haliotis species and hybrids. In conclusion, the proposed machine learning method has potentials for species classification of the genus Haliotis. Our results will provide valuable data for biodiversity conservation and management of abalone population in Korea.

• Journal of Species Research
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• 제10권1호
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• pp.86-98
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• 2021

The genus Pholcus Walckenaer, 1805 is the largest genus among the cellar spider family Pholcidae C.L. Koch, 1850, including 339 species. To date, 33 species in the genus are known to be distributed in Korea, being placed into three species-groups(crypticolens-group, phalangioides-group, and phungiformes-group). About 91% of these species are endemic to Korea. In this study, four new species of the genus Pholcus were discovered in Korea, viz, Pholcus chuncheonensis Lee, Choi and Kim sp. nov., Pholcus pajuensis Lee, Choi and Kim sp. nov., Pholcus pocheonensis Lee, Choi and Kim sp. nov., and Pholcus unaksanensis Lee, Choi and Kim sp. nov. These new species are classified as members of the phungiformes-group, having morphological characteristics such as male chelicerae with a frontal apophysis, palpal tibia with a prolateroventral tubercle, and genital bulb without appendix or having pseudo-appendix, but can be distinguished from congeners by characteristics of the male palp and female genitalia. Detailed descriptions and a key to new species are provided with accompanying photographs.

• 수산해양교육연구
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• 제9권2호
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• pp.236-245
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• 1997

암화전(岩和田) 어업협동조합에 속하는 어선어업의 조업형태는 1인승과 2인승으로 구분 할 수 있으며, 2인승 어선에 의한 어획이 1인승어선의 어획보다 높다는 것을 알 수 있었다. 2인승어선이 어획한 7어종으로부터 어획금액이 높은 어종별로 어선을 분류하여, 다시 이것들을 판별 함수로서 분류한 결과, 4 그룹으로 분류되었다. 그 그룹은, 방어류 및 오징어류를 주로 어획하는 Gl그룹, 방어류 및 가다랭이 참치류를 주로 어획하는 G2그룹, 오징어 및 가다링이 참치류를 주로 어획하는 G3그룹, 그리고 기타어류 및 문어를 주로 어획하는 G4그룹이다. 또, 7어종의 어획금액에 대해서 주성분분석을 하여, 제1주성분에서 제3주성분까지의 주성분득점으로 부터 그룹을 고찰한 결과, G1, G2 및 G3그룹은 동일한 어업형태로 판단되었고, G4그룹만이 다른 어업형태인 것을 알 수 있었다.