• Journal of Forest and Environmental Science
• /
• 제34권4호
• /
• pp.275-283
• /
• 2018

This study created the running water (Bandibooliwon) and lentic water (Sooryunwon) artificial habitats of Luciola lateralis in Hwadamsup, Gwangju-si, Gyunggi-do from April 2014 to February 2016. Through various habitat types, metapopulation was formed, and more sound population was induced to be maintained via interactions between habitats. We investigated coenosite at the habitat creation-target site, and 20 species in the lentic water site and 38 species in running water site were found. After releasing L. lateralis, we checked the status of settlement of L. lateralis larvae through traps and macroscopy, controlled the flow velocity of the habitats in line with the life cycle of L. lateralis (hatching, larva period, landing, pupation, copulation, and oviposition), and shaped gentle slope at water side, and planted moss. We artificially supplied melanian snails (Semisulcospira sp.), the food source, in the running water site and induced stable feeding. Also, We created artificial insectary, bred larvae stably in winter, and secured firefly population for a festival. Through night time observation, the time most suitable for a festival was confirmed to be from 20:30 to 22:00.

• 식물병연구
• /
• 제26권2호
• /
• pp.109-115
• /
• 2020

A disease causing leaf blight and vine rot was recognized on kudzu plants (Pueraria lobata) in Korea since 1991. A species of Phytophthora has been repeatedly isolated from the infected leaves. Identification in species level of the Phytophthora sp. remained unsolved. An isolate, KACC 47616 originally collected from Manchon Park in Daegu, has been kept in our laboratory. In 2013, three new isolates, KACC 47617 and KACC 47618 from Yeongyang and KACC 47619 from Gunwi in Gyeongbuk province, were collected and examined to classify up to species level by characterizing morphology, response to temperature and phylogenetic relationship. On the basis of morphological characters such as the nature of hyphal swelling, sporangia and sex organs, absence of chlamydospore production, optimum temperature for mycelial growth, and internal transcribed spacer rDNA and cytochrome oxidase subunit 1 sequence analysis of the pathogen, the causal fungus of kudzu plant was identified as Phytophthora asiatica.

• 한국동물위생학회지
• /
• 제30권1호
• /
• pp.43-49
• /
• 2007

Avian pneumovirus(APV), also known as avian rhinotracheitis(ARTV), affects both turkeys and chickens and is known to be the primary causative agent of turkey rhinotracheitis(TRT). The aim of this study was to establish the presence or absence of antibodies to APV by an enzyme-linked immunosorbent assay(ELISA) and confirm APV by a reverse transcriptase-polymerase chain reaction(RT-PCR). The tested serum and feces were collected from laying hens in Gyeongbuk province. The positive farms with antibody against APV by ELISA were 90(96.7%) of 93 and positive serum samples were 433(93.1%) of 465 different sera. By regional group, sera from Uiseong, Cheongsong and Bonghwa were noted as 100% positive and positive rates of samples from Yeongju, Andong and Yeongyang were 93.3%, 85.7% and 50%, respectively. However, APV was not detected in feces samples by RT-PCR.

• 한국관개배수논문집
• /
• 제13권2호
• /
• pp.283-292
• /
• 2006

The characteristics of nonpoint source pollutant loads in upstream of Nakdong River were studied through analysis of pollutant loads of 10 sub-watersheds divided based on administrative district. The discharge and pollutant concentration of each sub-watershed were collected from Nakdong-River Water Research Institute and Daegu Regional Environmental office, respectively. Pollution items analysed in this study were BOD, T-N and T-P. The delivery loads of the nonpoint source pollutions of each sub-watershed were calculated after analysing the concentration of the pollution of each site. Several points were found from the results. Firstly, in general, city areas including Sangju, Andong showed higher degree of nonpoint pollution than country areas including Cheongsong, Yeongyang. The sub-watersheds located upstream side, such as Yeongju, Bonghwa, Necessarily show better water quality than the sub-watersheds located downstream side, such as Mungyeong, Uiseong. This result indicates that a given pollution condition within the watershed can be more sensitive than location factor to the level of water quality. Secondly, the delivery load and area of watershed were not necessarily correlated in the sense of water quality, while the discharge was shown to be highly correlated to the delively load of pollution. Lastly, sewage and waste caused from population and livestock, as well as landuse factor, were found to significantly contribute to the water pollution. Alternative solutions for controlling pollution source, therefore, should be provided to meet target levels of water quality in these regions.

• 식물병연구
• /
• 제14권3호
• /
• pp.219-222
• /
• 2008

C. gloeosporioides와 C. acutatum의 개체군 밀도분석을 위해 기존 ITS부위를 이용한 PCR방법에 사용한 caInt2와 cgint 프라이머에 형광을 표지하여 C. acutatum에 특이적인 fcaInt2와 C. gloeosporioides에 특이적인 vcgint의 두 probe를 제작하였다. 이 두개의 프라이머와 Unicof1, Unicor1 primer를 이용 real time PCR을 수행하였을 때 C. acutatum은 fcaInt2 probe에, C. gloeosporioides는 vcgint에 특이적인 형광증폭곡선을 나타냄에 따라 delta Rn 값을 비교함으로 두 종의 구분이 가능하였다.

• 한국환경복원기술학회지
• /
• 제18권4호
• /
• pp.43-62
• /
• 2015

The purpose of this study is to offer the raw data for management and conservation of Korean ecosystem by surveying the present conditions and characteristics of flora to select the ecological and landscape conservation area, Ilwolsan(Mt.), Korea. The numbers of flora in Mt. Ilwol were summarized as 582 taxa including 94 families, 307 genera, 508 species, 4 subspecies, 61 varieties and 9 formas. The rare plants were 15 taxa including Clematis koreana, Aristolochia contorta, Daphne pseudomezereum var. koreana, Iris odaesanensis and so forth. The Korean endemic plants were 14 taxa including Pseudostellaria coreana, Philadelphus schrenckii, Galium koreanum, Weigela subsessilis and so forth. The specific plants by floristic region were 29 taxa including Cimicifuga heracleifolia, Parasenecio firmus, Sorbaria sorbifolia var. stellipila, Acer mandshuricum, Syringa reticulata var. mandshurica and so forth. The naturalized plants were 22 taxa including Fallopia dumetorum, Rumex nipponicus, Trifolium repens, Sonchus asper, Phleum pratense and so forth. A set of important area is rare plant, Korean endemic plant, specific plant emerge a lot of areas.

• 한국지형학회지
• /
• 제24권2호
• /
• pp.15-25
• /
• 2017

Subi basin is located at the crestline of Taebaek mountains. This paper aims to elucidate the geomorphic development of Subi basin through the analysis of river terraces built in Wangpi-cheon and Banbyeon-cheon. Wangpi-cheon flows northeastward from Subi basin, and Banbyeon-cheon flows southward at the west of Subi basin. Absolute age of terrace is measured by means of OSL methodology, long profile of Wangpi-cheon is made up with 10m interval contour line, and the elevation above river bed of high terraces is measured at the end part of terrace. The results are as follow: Firstly, high river terraces of Subi basin, Wangpi-cheon and Banbyeon-cheon are formed about 40 kyr(MIS 3) being interstadial stage of last glacial period. Secondly, the elevation above river bed of high terraces of Wangpi-cheon and Banbyeon-cheon tends to increase toward upstream. It means that the uplift of Taebaek Mountains influences considerably the formation of their terraces. Thirdly, the elevation above river bed of high terraces at the reach from Seomchon to Suha-ri of Wangpi-cheon tends to decrease toward upstream. This section is captured from Banbyeon-cheon flowing in the opposite direction. River piracy has occurred from the time of formation of Suha-ri high terrace to the time of formation of Hantee wind gap. Finally, for fluvial system of Wangpi-cheon to establish dynamic equilibrium, topographic axis will move toward Banbyeon-cheon.

• 식물분류학회지
• /
• 제53권3호
• /
• pp.201-212
• /
• 2023

Parasenecio pentaphylla, a new species of the genus Parasenecio from Mt. Ilwol-san, Ilwol-myeon, Yeongyang-gun, Gyeongsangbuk-do, Korea, is described and illustrated here. In Korea, this species has been recognized as P. adenostyloides, known to be a Japanese endemic species. However, it is clearly distinguished from P. adenostyloides by its involucre shape, the number of phyllaries, the number of florets per capitulum, and the ratio of the tube length to the throat length. A molecular phylogenetic analysis using the Internal Transcribed Spacer region also clearly indicated that P. pentaphyllaria was genetically distinct from P. adenostyloides. Therefore, it is recognized as an independent species, different from P. adenostyloides. The specific epithet "pentaphyllaria" was given based on its characteristic of having five phyllaries.

• 자원환경지질
• /
• 제45권3호
• /
• pp.265-276
• /
• 2012

용화광산의 광미와 침출수에 대한 분석을 실시하여 광미로부터 부과될 수 있는 성분을 예측하고, 침출수가 주변하천으로 유입될 때 오염물질의 거리에 따른 변화를 측정하였다. 하천수의 거리에 따른 변화는 갱내수와 침출수가 유출되는 지점에는 대체로 높게 나타나고 하류로 갈수록 이온의 농도는 급격히 낮아진다. 이는 침출수에 비해 훨씬 유량이 많은 비오염하천수에 의한 희석효과 때문이다. 광미는 붉은색과 노란색으로 구분되며 붉은색 광미의 주 구성광물은 석영, 일라이트, 플럼보자로사이트와 약간의 섬아연석이며 노란색 광미는 백운모, 석영, 플럼보자로사이트(Plumbojarosite) 그리고 소량의 황동석(Chalcopyrite)과 섬아연석(Sphalerite)을 포함하고 있다. 침출수에서 높은 값을 나타내는 Pb, Zn 등은 광미에 포함된 플럼보자로사이트와 섬아연석의 용해작용에 의한 것으로 하천수의 오염에 주 원인으로 작용하고 있다.

• 식물병연구
• /
• 제18권4호
• /
• pp.370-375
• /
• 2012

국내에서 시판되고 있는 고추 92품종을 이용하여 국내 시설재배지에서 가장 많이 분포하고 있는 두 종의 뿌리혹선충, Meloidogyne arenaria와 M. incognita에 대한 저항성을 검정하였다. M. arenaria에는 시판 고추 품종 모두가 저항성이었으며(난낭수 0-3/plant), M. incognita에는 모두 감수성이었다(난낭수 76-678/plant). M. incognita에는 모두가 감수성이었으나 품종별로 약간의 차이는 있었는데 거목(동부한농)과 신태풍(명산종묘) 2품종은 난낭이 포기당 100개 이하로 발생되어 불꽃처럼(누넴종묘) 등 29품종의 포기당 난낭수 300개 이상에 비해 상대적으로 적었다. 뿌리혹선충 피해가 심한 시설재배지 중에서, M. arenaria가 감염된 농가에서는 윤작작물로 고추를 심는 것을 적극 추천하고 반면, M. incognita가 감염된 포장에 고추는 윤작작물로 적절하지 않다.