• Journal of Ecology and Environment
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• 제43권3호
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• pp.297-304
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• 2019

Background: The growing wild boar population has become a social issue and its feeding characteristics could affect the physical condition and the plant species composition in the South Korean forests. We aimed to reveal the preference of the wild boar on forest type and site condition as feeding grounds in two cool-temperate forested national parks, Odaesan and Seoraksan, in order to provide information to manage the growing population. Results: The 75 plots (53.6%) out of 140 plots were used as feeding grounds by the wild boar, implying a considerably large population. Especially, the observation frequency as feeding ground was the highest in Quercus forests (73.3%), and it was significantly more preferred than deciduous forest type (44.2%) and coniferous forest type (32.4%) (${\chi}^2=17.591$, p < 0.001). Significantly more and deeper pits were found in Quercus forests. Moreover, high elevation and gentle slope ridge were relatively preferred regardless of forest distribution. Conclusions: South Korean forests are growing qualitatively and quantitatively. Particularly, Quercus forest area has increased markedly, while coniferous forest area has decreased. Since the Quercus forest provides rich food sources for the wild boar, the enlargement of this forest type is expected to increase the wild boar population. The forests located at high elevations have high species diversity, and it is expected that these forests will be greatly affected by the increase in the wild boar population as preferred feeding grounds.

• Journal of Microbiology and Biotechnology
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• 제27권6호
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• pp.1128-1137
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• 2017

The aim of this study was to explore the accuracy and feasibility of matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) in identifying bacteria from environmental sources, as compared with rpoA gene sequencing, and to evaluate the occurrence of bacteria of the genus Enterococcus in wild birds. In addition, a phyloproteomic analysis of certain Enterococcus species with spectral relationships was performed. The enterococci were isolated from 25 species of wild birds in central Europe (Poland). Proteomic (MALDI-TOF MS) and genomic (rpoA gene sequencing) methods were used to identify all the isolates. Using MALDI-TOF MS, all 54 (100%) isolates were identified as Enterococcus spp. Among these, 51 (94.4%) isolates were identified to the species level (log(score) ${\geq}2.0$), and three isolates (5.6%) were identified at a level of probable genus identification (log(score) 1.88-1.927). Phylogenetic analysis based on rpoA sequences confirmed that all enterococci had been correctly identified. Enterococcus faecalis was the most prevalent enterococcal species (50%) and Enterococcus faecium (33.3%) the second most frequent species, followed by Enterococcus hirae (9.3%), Enterococcus durans (3.7%), and Enterococcus casseliflavus (3.7%). The phyloproteomic analysis of the spectral profiles of the isolates showed that MALDI-TOF MS is able to differentiate among similar species of the genus Enterococcus.

• 원예과학기술지
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• 제17권1호
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• pp.11-14
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• 1999

참다래 및 야생다래에서 수액 채취시기에 따른 수액특성, 수액내 유리당, 무기물 및 아미노산함량 변화를 조사하였다. 참다래 및 야생다래에서 수액 채취시기에 따른 수액량은 채취 시기가 늦을수록 심하게 감소하는 경향을 보였다. 수액내 수분함량, 당도, 점도 및 pH는 두 종간 차이가 없었으나 산함량 및 탁도는 야생다래보다는 참다래에서 다소 높은 경향을 보였다. 당은 참다래에서 fructose, glucose, sucrose, galactose, manitol이 함유되어 있었고 야생다래에서는 fructose, glucose가 함유되어 있었는데 당의 대부분은 fructose였다. 수액내 주요 무기물은 칼슘, 카리 및 마그네슘으로 칼슘함량이 상대적으로 가장 높았다. 두 종에서 각각 17종의 아미노산이 함유되어 있었는데 이들중 주요 아미노산은 glutamic acid, lysine 및 isoleucine이었는데 이중 glutamic acid함량이 가장 높았다. 참다래에서 histidine, methionine과 tylosine을 제외한 나머지 성분은 야생다래에 비해 높았다. 무기물 및 아미노산함량은 수액 채취시기가 늦을수록 증가하는 반면 유리당함량은 감소하는 경향을 보였다. 수액의 품질은 채취시기가 늦을수록 향상되는 것으로 나타났으나 수액채취량은 현저히 감소하는 경향을 보였다.

• Journal of Ecology and Environment
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• 제43권2호
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• pp.104-116
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• 2019

Background: The composition of wild bird populations in temperate zones greatly varies depending on phenological changes rather than other environmental factors. Particularly, wild birds appearing in wetlands fluctuate greatly due to the crossover of species arriving for breeding during the summer and for wintering. Therefore, to understand the changes to species composition related to phenology, we conducted this basic analysis of populations to further the cause of the protection of wetland-dependent wild birds. Methods: It is wrong to simply divide a wild bird population investigation into seasons. This study identifies species composition and indicator species that change along with seasons. Wetlands to be surveyed are protected by natural monuments and wetland inventory and are in a state close to nature. In order to identify as many species as possible in wetlands, a survey was conducted in both shallow and deep wetlands. The water depth varied in these areas, ranging from 0.2 to 2.0 m, allowing for both dabbling and diving ducks to inhabit the area. Surveys were conducted using line-transect and distance sampling methods and were conducted at intervals of 2 weeks. The survey was conducted under the following three categories: the eco-tone and emergent zone, the submergent zone, and the water surface. The survey was conducted along a wetland boundary by observing wild birds. A PC-ord program was used for clustering, and the SAS program was used to analyze the changes in species composition. The data strongly indicates that day length is the main factor for seasonal migration periods, despite the fact that climate change and increasing temperatures are often discussed. Results and conclusions: The indicator species for determining seasons include migrant birds such as Ardea cinerea, Alcedo atthis, Anas penelope, and Poiceps ruficollis, as well as resident birds such as Streptopelia orientalis and Emberiza elegans. Importantly, increases in local individual counts of these species may also serve as indicators. The survey results of seasonal fluctuations in temperate zones shows that spring (April to June), summer (July to September), autumn (October), and winter (November to March) are clearly distinguishable, even though spring and summer seasons tend to overlap, leading to the conclusion that additional research could more clearly identify fluctuation patterns in species composition and abundance in the study area.

• 한국균학회소식:학술대회논문집
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• 한국균학회 2014년도 추계학술대회 및 정기총회
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• pp.21-21
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• 2014

The importance of utilizing biological resources has become magnified and it has been a big issue to share the benefit among nations as Nagoya Protocol began in 2010. This study was conducted to research the diversity and distribution of wild mushrooms, and to survey the traditional mushroom knowledge of the people in Jejudo which is a volcanic island having a distinctive climate and forest environment. The research sites were Dongbaekdongsan, Keuneonggot, Hallasan National Park, Muryeongarioreum, Saryeonisupgil and other important area where mushrooms are growing spontainously in Jejudo. A total of 511 species comprising 2 phylums, 8 classes, 20 orders and 74 genera were identified from 1600 specimens collected from 2006 to 2012. In previous studies, a total of 561 species comprising 69 families and 99 genera were investigated. As a result, a total of 755 species comprising 23 orders, 87 families and 263 genera were documented in Jejudo. In this study, 137 species were newly identified as unrecorded species in Jejudo and 9 species, Amanita gemmata, Tricholoma aurantiipes, Panellus violaceofulvus, Leucopaxillus septentrionalis, Bondarzewia montana, Psilocybe argentipes, Boedijnopeziza insititia, Sarcoscypha occidentalis for. occidentalis and Morchella patula var. semilibera were the first record for Korea. Also, 7 species, Amanita gemmata, Tricoloma aurantiipes, Panellus violaceofulvus, Leucopaxillus septentrionalis, Boedijnopeziza insititia, Sarcoscypha occidentalis for. occidentalis and Morchella patula var. semilibera were known as only growing in Jejudo. The traditional knowledge was collected from visiting and questionnaire survey in 50 villages in Jejudo. A total of 23 mushrooms were found in which 12 species were used for food, 2 species were poisonous, 6 species were medicinal, 2 species were used for folk religion and 3 species were used for play purposes. Macrolepiota procera was the most commonly used as an edible mushroom and Chlorophyllum neomastoidea was the most well known poisonous mushroom. Also, 267 cases of traditional knowledge about using mushrooms as a food and medicine were collected. This study has significance for supplementing previous studies about distribution of wild mushrooms in Jejudo and documenting unrecorded species in Korea. Also, it is valuable by providing important data of traditional knowledge for using mushrooms since old times.

• Parasites, Hosts and Diseases
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• 제55권2호
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• pp.185-191
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• 2017

Tick is one of the most important arthropods in the transmission of vector-borne diseases. In this study, we investigated the abundance and species of ticks associated with swine and their habitats to assess the risk of spread of tick-borne diseases in host species, such as wild boars. Ticks were collected from 24 grazing or traditionally reared domestic pig farms and 8 habitats of wild boars in 8 provinces and 1 city in the Republic of Korea, by using the dragging and flagging methods. Ticks were also collected directly from 49 wild boars by using fine forceps. A total of 9,846 hard ticks were collected, including 4,977 Haemaphysalis longicornis, 4,313 Haemaphysalis flava, 508 Ixodes nipponensis, 1 Ixodes turdus, and 47 Amblyomma testudinarium. A total of 240 hard ticks were collected from 49 wild boars, including 109 H. flava, 84 H. longicornis, and 47 A. testudinarium. A total of 578 hard ticks were collected from areas around domestic pig farms. Only 2 hard tick species, 546 H. longicornis and 32 H. flava, were collected from these areas. A total of 9,028 hard ticks were collected from wild boars of 8 habitats, including 4,347 H. longicornis, 4,172 H. flava, 508 I. nipponensis, and 1 I. turdus. A. testudinarium was collected only from wild boars, and I. nipponensis and I. turdus were collected only from the habitats of wild boars.

• Asian-Australasian Journal of Animal Sciences
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• 제15권4호
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• pp.470-476
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• 2002

Random amplified polymorphic DNA (RAPD) analysis based on numerous polymorphic bands have been used to investigate genetic similarity and diversity among and within two cultured and wild populations represented by the species crucian carp (Carassius carassius). From RAPD analysis using five primers, a total of 442 polymorphic bands were obtained in the two populations and 273 were found to be specific to a wild population. 169 polymorphic bands were also produced in wild and cultured population. According to RAPD-based estimates, the average number of polymorphic bands in the wild population was approximately 1.5 times as diverse as that in cultured. The average number of polymorphic bands in each population was found to be different and was higher in the wild than in the cultured population. Comparison of banding patterns in the cultured and wild populations revealed substantial differences supporting a previous assessment that the populations may have been subjected to a long period of geographical isolation from each other. The values in wild population altered from 0.21 to 0.51 as calculated by bandsharing analysis. Also, the average level of bandsharing values was $0.40{\pm}0.05 $ in the wild population, compared to $0.69{\pm}0.08$ in the cultured. With reference to bandsharing values and banding patterns, the wild population was considerably more diverse than the cultured. Knowledge of the genetic diversity of crucian carp could help in formulating more effective strategies for managing this aquacultural fish species and also in evaluating the potential genetic effects induced by hatchery operations.

• Parasites, Hosts and Diseases
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• 제57권6호
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• pp.647-656
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• 2019

Isthmiophora hortensis (Digenea: Echinostomatidae) is a dominant echinostome in animal reservoir hosts and humans in the Republic of Korea (Korea). We intended to investigate the infection status with this echinostome species in the several species of wild animals and describe the morphological characteristics in the faunistic view point. A total of 175 animal carcasses belonging to 3 families, i.e., Canidae, Felidae and Mustelidae, were collected from the southern regions of Korea from March 2010 to July 2017. Isthmiophora spp. worms were recovered from the small intestines of each animal under a stereomicroscope after washing of intestinal contents. Isthmiophora hortensis was recovered from 4 species of wild carnivores, i.e., Nyctereutes procyonoides (3/107: 2.8%), Mustela sibirica (11/31: 35.5%), Meles lucurus (2/3: 33.3%) and Martes flavigula (1/2: 50%). The other 3 carnivores comprising stray dogs, cat and leopard cat were negative for I. hortensis infection (0/2, 0/10 and 0/12, respectively). Specimens obtained from the Lutra lutra (6/8: 75%) were identified as a distinct species, I. inermis, by morphological comparison. Isthmiophora inermis has thinner body, elongate testes and different anterior limits of vitelline fields. Detailed morphological descriptions and comparisons with the morphological characteristics are provided. Conclusively, it was confirmed for the first time that 3 species of mustelid mammals, i.e., M. sibirica, M. lucurus, and M. flavigula, are to be the new definitive hosts of I. hortensis in Korea. Additionally, I. inermis is to be newly added in the Korean echinostome fauna.

• 한국환경생태학회지
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• 제16권2호
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• pp.160-171
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• 2002

자원식물로 유용한 야생배인 산돌배와 돌배나무군락의 종조성, 분포, 입지조건을 해석하기 위해 식물사회학적인 방법에 따른 조사가 함백산, 소백산. 일월산, 주왕산. 가야산 등지에서 실시되었다. 이것은 군락생태학적 접근을 통해 개생태학적인 특성을 파악하려는 하나의 시도이다 본 연구 결과, 야생 배나무류를 포함하는 삼림 식생은 두 군집과 두 군락으로 식별되었다: 우산나물-졸참나무군집, 물개암나무-신갈나무군집, 단풍취-신갈나무군락, 물푸레나무-산돌배군락, 이 중 우산나물-졸참나무군집과 물개암나무-신갈나무군집은 우리나라 참나무삼림의 분포유형에서 제각기 남부형 및 중\ulcorner북부형에 속한다. 그러므로 야생 배나무류는 주로 한국의 냉온대 낙엽수림 영역에 제한되며, 부분적으로 우점하거나 단독으로 출현하는 것이 밝혀졌다 일반적으로 야생 배나무류는 교목과 아교목층에 출현하는데, 이것은 이 종이 양수이고 임관의 다른 구성종과 함께 실생으로 발생하였음을 암시한다. 이를 반영하여 야생배나무류는 보통 SE-SW방향에 분포하였다. 또 야생 배나무류를 포함하는 삼림의 임관은 열려 있는 경우가 많았다. 다양성은 우산나물-졸참나무군집이 높았고, 다른 군락들은 비교적낮았다. 상급단위로서 식별된 군락은 조록싸리-졸참나무군단, 철쭉-신갈나무군단; 당단풍-신갈나무군목; 신갈나무군강에 속하는 것으로 밝혀졌다.

• 식물분류학회지
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• 제36권4호
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• pp.335-360
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• 2006

표본에 근거하여 한반도 야생란 88분류군에 대한 분포를 조사하고, 각 분류군의 분포도를 작성하였다. 한반도내 8개 식물 분포 아구에 분포하는 야생란의 분류군 수는 다음과 같았다; 갑산아구 27분류군, 관북아구 21분류군, 관서아구 13분류군, 중부아구 37분류군, 남부아구 39분류군, 남해안아구 33분류군, 제주도아구 64분류군, 울릉도아구 19분류군. 한반도 야생란의 72.7%가 제주도에 자라는데, 이 중 18분류군은 한반도에서는 제주도에만 분포한다. 한반도 야생란 중 30분류군은 상록활엽수림대에 자라며, 16분류군은 북부지역이나 고산에 분포하는 북방계 요소였다. 분포 조사를 기초로, 한반도 야생란을 국내에서 변형한 IUCN 적색 목록 범주에 따라 분류하였다. 절멸종(EX) 또는 야생에서의 절멸종(EW)에 속하는 난초과 식물은 한반도에서는 발견되지 않았다. 위급종(CR)에 속하는 분류군은 Cymbidium kanran(한란), C. lancifolium(죽백란), C. ensifolium(소란), Cypripedium japonicum(광릉요강꽃), Cyrtosia septentrionalis(으름난초), Dendrobium moniliforme(석곡), Habenaria chejuensis(제주방울란), H. radiata(해오라비난초), Neofinetia falcata(풍란), Sedirea japonica(나도풍란) 10분류군이었는데, 이 중 소란과 제주방울란은 이번 연구에서 처음으로 CR 범주로 기록되었다. 한편, 위기종(EN)으로 분류된 것은 22분류군으로, 이 중 Gastrochilus japonicum(탐라난), G. fuscopunctatus(금자란), Gastrodia verrucosa(한라천마), Habenaria flagellifera(방울난초), Herminium lanceum var. longicrure(씨눈난초), Chamaegastrodia sikokiana(애기천마), Lecanorchis kiusiana(제주무엽란), Neottia hypocastanoptica(한라새둥지란), Tipularia japonica(비비추난초)가 이번 연구에서 최초로 EN 범주에 포함되었다.