• 한국환경복원기술학회지
• /
• 제18권2호
• /
• pp.19-32
• /
• 2015

In Korea, significant riparian areas have been developed due to river maintenance projects. Introduction of new riparian facilities can negatively affect wildlife in the riparian areas. This study focuses on selecting core conservation areas for Eurasian Otter(Lutra lutra) to support decision making process for development of riparian areas. For the study, first of all, field data of study site were collected by field surveys. Secondly, stream naturalness was assessed to understand physical environments of the study sites. Thirdly, habitat suitability was assessed using occurrence data of Eurasian Otter and environmental data. Lastly, core areas for conservation was selected by comparing and synthesizing stream naturalness map and habitat suitability map. The selected core areas showed several characteristics. The number of artificial facilities is low in the core areas. Rocks which are preferred by Eurasian Otter to eat and excrete are plentiful in the core areas. Also, the ratio of adjacent farmland is high. Based on the analyses, it is expected that this study can contribute to decision making process for environmental spatial plans to better conserve habitats of Eurasian Otter.

• 한국환경복원기술학회지
• /
• 제8권1호
• /
• pp.63-72
• /
• 2005

Chirisan National Park, the first and largest one out of 20 national parks in Korea, is divided into five zones. They are composed of nature preservation zone, natural environment zone, natural residential zone, concentrated residential zone, and collective facility zone. However, the park is not a continuous habitat: roads, trails, local residences, and various facilities created the habitat mosaics severely fragmented. We investigated the fragmentation pattern of the park due to roads and mountain trails using GIS. Based on perimeter length, area, and the ratio of perimeter to area of each patch, we obtained landscape analysis indices which reflect the regularity of the patch shape. The 1 m-wide hiking trails divided the park into 491 fragments. The legal trails with 1.5 m - 3 m width which have been heavily used by hikers generate 58 fragments. Even the nature preservation zone, corresponding to a core zone comprising 31.8% of the park area, was divided into 37 fragments because of the roads and mountain trails. With the different widths of buffer applied, the core sizes of the fragments were reduced. When the 60 m buffer was applied, the patch interior areas ranged from 0.0001 to 47.77 $km^2$ with a mean of 7.08 $km^2$. The landscape shape indices were far greater than 1 for most of the cases with a maximum value of 25. These results clearly indicate that Chirisan National Park is not a continuous habitat, but mosaics of small, irregularly shaped habitat fragments. It is necessary to take the size and shape of the fragmented habitats into consideration when nature conservation is planned, especially for large wildlife such as brown bears.

• 한국산림과학회지
• /
• 제98권5호
• /
• pp.563-567
• /
• 2009

This study was conducted to clarify the characteristics of bird communities between before and after forest fire in tropical deciduous Dipterocarp forest of Mondulkiri protected forest of the northeastern Cambodia from January to April 2009. The DBH distribution of trees were different in each DBH class. Most of the trees (> 80%) were belong to < 30 cm DBH. After the forest fire, coverage of understory layers were dramatically decreased by the fire. Total 64 species of birds were recorded, and 64 and 46 species of birds were observed before and after the fire, respectively. Observed number of individuals of bee-eaters, treepies, kingfishers, lapwings, herons, junglefowl, peafowl, prinias and warblers were decreased after the fire. The decrease of those species would be related with the change of habitat condition, such as decrease of water amount and understory coverage. For the management and conservation of junglefowls, peafowls, prinias and warblers, understory vegetation should be maintained in Mondulkiri protected forest, northeastern Cambodia.

• 한국조경학회지
• /
• 제34권1호
• /
• pp.10-20
• /
• 2006

This study is to introduce the improvement and management of Ecoduct located in Uiwang's Mt. Obong, Gyeonggi province. The inner planting of Ecoduct is not very related to the flora of mountain areas nearby. The difference in the index of plant crown volume(GVZ), the similarity index(S.I.), and monitored animals is significant between Ecoduct and mountain areas. Putting together all of the results, the initial selection of movement and target species is excessive in number. Target species must be selected again. They will be species that are currently found on the site. The Ecoduct space must be divided into two parts: buffer planting space and wildlife corridor. Reforestation is needed since the GVZ is remarkably lower in Ecoduct than in the nearby mountain areas. Besides the vegetation of Ecoduct is densely planted in guidance planting space to connect the southern Quercus mongolica community and the northern Quercus acutissima community. Proper upkeep after construction should be continuously conducted to maintain the procedure of natural change.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
• /
• pp.72-74
• /
• 2003

Forest canopy density is an ideal representative of the forest habitat situations. It can directly or indirectly depict the canopy structure and gap size in the forestland, thus could be applied to assessment of wildlife’s diversit y. Since population survey of vegetation and wildlife diversities is a key issue for sustainable forest ecosystem management, many research efforts have been focused on forest canopy density using multispectral data in the last two decades. Unfortunately, prediction of canopy density using large scaling remote sensing data remains a challenging issue. Due to recent advances in hyperspectral image sensors hyperspectral imagery is now available for environmental monitoring. In this paper, we conduct experiments to monitor complicated environments of forestland that can be captured by using hyperspectral imagery and further be analyzed to test a prediction model of forest canopy density. The results show that 95% of canopy density could be well described by using 2 difference vegetation indices (DVIs), which are difference of blue and green reflectances rband_100-rband_150 and difference of 2 short wave infrared reflectancse rband_406-rband_410 With the wavelengths of band no. 100, 150, 406, and 410 specified by 462.39 nm, 534.40 nm, 918.22 nm and 924.41 nm respectively.

• 한국임상수의학회지
• /
• 제35권1호
• /
• pp.7-9
• /
• 2018

Mycobacterium avium subspecies paratuberculosis (MAP) causes a significant economic burden in the animal production industry. The purpose of this study was to investigate the prevalence of MAP in the feces of wild duck populations residing along a riverside close to farms in the center of Korea. From wild Spot-billed (Anas poecilorhyncha) and Mallard (Anas platyrhynchos) ducks, 128 fecal samples were collected and analyzed using multiplex real-time PCR, sequencing, and nested PCR to confirm the presence of the organism. The molecular analyses showed that 44 samples (34.4%) were positive for MAP, suggesting a high prevalence of MAP in the wild duck population. Considering the nature and habitat of wild ducks, this result suggests that the organism was introduced from contaminated water from waste of nearby farms, and that the wild ducks may act as a transmitter of the organism to other wild birds or livestock.

• 한국습지학회지
• /
• 제20권4호
• /
• pp.295-303
• /
• 2018

한국의 내륙습지는 동아시아-대양주 철새 이동경로 상 중요한 번식지 및 월동지를 제공하고 있고, 연안습지는 철새들에게 영양분이 풍부한 중간기착지를 제공하는 역할을 하고 있다. 하지만, 1960년대 이후, 한국은 농경지와 도심 확장을 위해 점진적으로 연안습지를 매립하였고, 야생생물 연안습지 서식지 손실로 인한 이동성 물새 개체수 감소를 야기 하였다. 미국(특히, 미주리주)은 이러한 습지 야생생물 다양성 및 개체수 감소를 막기 위해 습윤토양관리 기법을 개발 하여 야생생물 서식지 보전과 개체수 관리를 하고 있다. 습윤토양관리 기법은 습지 야생생물의 서식지 조건을 최대한 충족하는 상태로 습지를 관리하여 서식지 수용력을 높이는 습지관리 기법이다. 습윤토양관리 지역을 조성하기 위해서는 제방과 물의 흐름을 조절할 수 있는 수문을 만들고, 토양, 지형, 가용한 수원 등을 관리 하여야 한다. 또한, 습윤토양관리 지역은 범람과 배수지역을 정기적으로 특정시기에 관리하고, 다년생 식물생장으로 인한 육상화 억제를 위해 일정기간 동안의 토양교란으로 서식지를 관리 하여야 한다. 이러한 관리 기법은 두가지 목적을 가지고 있는데, 하나는 원하지 않은 식물 생육 통제이고, 다른 하나는 야생생물의 서식지와 먹이원을 최대화 하기 위함이다. 범람과 배수 일정은 지역을 고려한 기후적인 변화에 맞도록 유동적으로 반영하여야 한다. 한국의 위도는 미주리 주와 유사해서 습윤토양관리 기법이 한국에 맞는 효과적인 습지조성 및 관리기법으로 활용될 수 있을 것으로 기대된다. 특히, 이동성 물새(도요 물떼새) 중간기착지와 같은 서식지로의 중요한 역할을 하는 연안습지 인근지역에서 습윤토양관리 기법을 실험적으로 적용하여 한국의 여건(지리, 미기후, 생물종 분포 등)에 맞는지 세부적인 방법을 모색해 보는 연구가 필요하다. 습윤토양관리 기법은 멸종위기 야생생물들에게 주요 서식지를 조성해 줄 뿐만 아니라, 폭넓은 습지 생태계서비스 가치를 함께 제공해 줄 것이다.

• 한국임상수의학회지
• /
• 제34권5호
• /
• pp.396-399
• /
• 2017

This is a case report of a northern goshawk (Accipiter gentilis), admitted to the wildlife rescue center with right coracoid and scapular fracture which received conservative treatment and was soft-released successfully. At the admission, the goshawk had callus formed on the fractured bones, scars on eyebrows and severely damaged tail feathers with inability to fly. Cage rest was indicated to prevent further occurrence of fracture and to promote reunion of the fracture surface. The bird went through a rehabilitation process with appropriate physical training in flying cage to recover its fitness and flying ability. Complete molting of flight feathers with damaged rectrices was achieved during the rehabilitation period and its flight ability was recovered favorably. It was released into a proper habitat for northern goshawks, but the bird was found near the aviary where its last phase of rehabilitation was performed. A soft-release program was applied and finally the bird returned to near the first rescue location 235 km away from the release site.

• Journal of Forest and Environmental Science
• /
• 제34권2호
• /
• pp.136-141
• /
• 2018

The purpose of this study is to compare the bird crossing of roads by type (Expressway 1, railroad-provincial road and Highway 4) and the crossing of roads according to the size of birds. The greatest number of avian species and individuals crossing road per 10 minutes were found on railroad-provincial road ($8.96{\pm}1.92$ and $29.33{\pm}11.94$, respectively), while the lowest number of avian species and individuals were found on Expressway 1 ($2.96{\pm}1.04$ and $6.13{\pm}2.89$, respectively), which has the widest width. In addition, the number of small-sized bird (<20 cm) crossing the Expressway 1, railroad-provincial road, and Highway 4 was lower than that of the medium-sized bird (${\geq}20cm$). Current wildlife crossing structures have been focused on mammals, amphibians and reptiles, but future structures should also consider birds.

• 인간식물환경학회지
• /
• 제24권5호
• /
• pp.469-483
• /
• 2021

Background and objective: If the Nelumbo nucifera spreads in a wetland at a high density, it can have considerable positive and negative ecological effects on habitats. For this reason, it is necessary to precisely investigate the impacts of its rapid proliferation. This study was conducted to propose the distribution and management of N. nucifera, which can cause the degradation of wildlife habitats due to the rapid spread of internal and external environmental factors that may affect the Junam wetland ecosystem. Methods: For the investigation and analysis of physical and ecological characteristics, factors of the abiotic environment such as general weather conditions, topography and water depth structure, and soil and water quality analysis, and bioenvironment characteristics such as changes in the N. nucifera community distribution were evaluated. To assess whether the differences in the soil depth and physicochemical characteristics between the N. nucifera community and the aquatic plant community are statistically significant, a One-way ANOVA was executed. Results: N. nucifera was presumably introduced in approximately 2007 and observed at a prevalence of only 0.8% in 2009, but had expanded to 11.1% in 2014. After that, the area was increased to 19.3% in 2015 and 40.0% in 2017, about twice that of the previous survey year. The rapid diffusion of an N. nucifera colony can have adverse effects on wildlife habitats and biodiversity at Junam Wetland. To solve these problems, four management methods can be proposed; water level management, mowing management, installation of posts and removal of lotus roots. Control of the N. nucifera community using these methods was judged to be suitable for cutting and water level management when considering expansion rate, water level variation, and wildlife habitat impacts. Conclusion: As the biotic and abiotic environmental factors are different for each wetland, it is necessary to determine the timing and method of management through a detailed investigation.