• 제목/요약/키워드: bird observation

검색결과 33건 처리시간 0.02초

FMCW 레이더를 이용한 원격 조류(鳥類) 관측 시스템 개발 (A Development of Remote Bird Observation System Using FMCW RADAR)

  • 이희용;황훈규;최명길
    • 한국해양환경ㆍ에너지학회지
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    • 제17권3호
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    • pp.247-256
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    • 2014
  • 최근, 조류 관측을 위하여 카메라나 레이더 등이 도입되어 보다 정확하고 효율적인 관측이 가능해지게 되었다. 특히, 레이더를 활용하여 조류를 관측하는 방법에 관한 연구가 활발하게 진행되고 있으며, 레이더 조류학이라는 분야가 생겨나게 되었다. 기상 레이더, 공항 탐색 레이더, 추적 레이더 등 여러 종류의 레이더가 조류 관측에 활용되고 있지만, 접근성을 비롯하여 경제성 및 이동성에 많은 제약을 가지고 있어 선박용 레이더가 널리 사용되고 있는 실정이다. 본 논문에서는 선박용 FMCW 레이더를 이용하여 원격 조류 관측 및 통계 분석 기능을 제공하는 시스템 개발에 관한 내용을 다룬다. 이를 위해 널리 알려져 있는 물표 인식을 위한 이미지 처리 기법을 적용하였다. 또한 개발한 시스템을 이용하여 두 차례 실험을 실시하였고, 움직이는 조류가 관측됨을 확인하였다. 그 결과, 각종 레이더 수치 값 조정 등의 개선점을 파악하고 이를 수정하였으며, 조류 관측 분야에 시스템의 적용가능성을 확인하였다. 개발한 시스템은 조류 관측에 관한 연구 뿐 아니라 환경 평가 등의 분야에 도입될 수 있을 것이며, 향후에는 조류 관측을 보다 정확하게 분석하여 통계내고, 조류의 이동 경로를 추적하는 것에 관한 연구가 필요하다.

Estimating the habitat potential of inland forest patches for birds using a species-area curve model

  • Chung, O.S.;Jang, G.S.;Oh, J.H.
    • Animal cells and systems
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    • 제15권1호
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    • pp.73-78
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    • 2011
  • Estimating the habitat potential of inland forest patches for birds requires the modeling of species-area relationships, or relationships between habitat size and numbers of bird species in each patch. The accurate estimation of speciesarea relationships significantly reduces the effort required to recognize the number of species living in each patch. The objective of this study was to estimate the relationship between forest patch size and bird species diversity in Dangjin County, in northwest South Korea, based on the sizes of inland forest patches. KOMPSAT-2 images were obtained and ortho-rectified to construct a map of the target forest patches. The numbers of birds per patch were surveyed four times: August 2008, September 2008, February 2009 and May 2009. Regression models were derived to explain the relationships between the numbers of bird species and patch size. A model that was derived using data from all four observation periods had the highest coefficient of determination ($R^2$). According to these models, the numbers of bird species at first increased linearly with increasing patch size; however, the curve then plateaued. Our model including observations from four seasons will be useful for estimating the numbers of bird species in other inland forest patches in South Korea.

산림성 조류의 번식기 음성녹음을 이용한 조류군집 평가 (Evaluation of the Forest Bird Community in the Breeding Season by using the Sound Recording System)

  • 유승화;한현진;김동원;주우영
    • 한국환경생태학회지
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    • 제32권1호
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    • pp.39-46
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    • 2018
  • 번식기 조류 조사(Breeding Bird surveys)는 생태계 내 군집 구조와 기능 그리고 생물다양성 보전을 위한 중요한 기초 자료를 제공한다. 최근 기후변화 등에 따른 생물다양성이 급변함에 따라 산림성 조류조사 데이터의 정확성 및 공간적인 확대와 시계열적 모니터링을 위해 음향 센서 등의 활용이 요구되고 있다. 본 연구의 목적은 조류 음성을 녹음한 데이터와 현장 조류조사 자료를 비교 분석하여 번식시기 산림성 조류의 군집 다양성 평가에 음향 녹음 센서의 활용 가능성을 파악하는 것이다. 2013년 5월 2일부터 16일까지 현장조사 및 녹음을 실시하였으며, 조사 대상지는 점봉산지역의 곰배령과 조침령, 그리고 소백산지역의 죽령과 고치령 구간으로 총 4개 권역 48개 지역, 186개 지점이었다. 녹음결과를 이용하여 현장조사에 의한 조류군집지수와의 상관관계를 분석한 결과, 녹음에 의한 조류 종의 수와 개체수, 울음소리 횟수는 현장조사에 의한 조류의 종의 수, 개체수와 유의미한 상관관계가 있었지만, 녹음에 의한 조류 종의 수와 음성의 횟수는 현장조사(관측과 청음 병행)에서의 종다양도, 종풍부도와 유의미한 상관관계가 있었지만 종균등도와는 약한 상관관계 혹은 관계가 없음으로 나타났다. 결과적으로 현장에서의 음성녹음 자료를 분석할 경우 조류군집의 종조성과 함께 종다양성을 확인할 수 있었다. 비번식기의 음성녹음에 비하여 번식기의 음성녹음은 녹음결과와 종다양성과의 상관관계에서 보다 신뢰도가 높게 나타났으며 활용가능성이 더 높은 것으로 사료된다.

Bird Diversity and Environmental Correlates in the Mulchat-oream Wetlands of the Jeju Islands, South Korea

  • Jeong, Young-Hun;Jin, Seon-Deok;Banjade, Maniram;Son, Se-Hwan;Choi, Sung-Hoon;Choi, Sung-Hwan;Oh, Hong-Shik
    • Proceedings of the National Institute of Ecology of the Republic of Korea
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    • 제3권2호
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    • pp.77-83
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    • 2022
  • This study was conducted from March 2018 to December 2019 to identify bird diversity and environmental correlates within the Mulchat-oream wetlands in the Jeju Islands of South Korea. A total of 255 individual belonging to 37 species were recorded form Mulchat-oream. The observation produced a species diversity of 3.14, species richness of 6.54 and species evenness of 0.88 in 2018, and in 2019, the observed species diversity was 3.02, species richness was 6.56 and species evenness was 0.84. The highly dominant species are composed of Passeriformes. The absence of diverse submerged plants, deep water depth and isolated geographical locations makes difficult for aquatic birds to prefer this area, and this has resulted in the dominance of Passeriformes. The appearance of the birds was the lowest in the winter and highest during the summer. The analysis showed that the species richness and evenness increased with an increase in temperature and precipitation. However, the number of species appearing during Mulchat-oream significantly dependent on the temperature (P<0.001, df=2). To date, there has been little research on bird diversity together with environmental factors for the Hallasan National Park. This study shows the environmental factors and seasonal patterns that affect bird population.

The vertebrate fauna along the Hantangang (river) of Korea

  • Jo, Yeong-Seok;Kim, Byung-Jik;Hur, Wee-Haeng;Won, Chang-Man
    • Journal of Species Research
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    • 제1권1호
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    • pp.87-99
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    • 2012
  • Before the construction of Hantangang dam, we surveyed vertebrate fauna along the Hantangang River and collected samples. We collected 248 specimens (1,394 individuals) of 41 fish species from 10 families in four orders, including 17 endemic species and 5 endangered species. In our herpetofauna survey, we collected 47 amphibian samples of 10 species from 5 families in 2 orders, and 19 reptile samples of 5 species from 2 families in 1 order. We observed 25 species of bird (6 orders, 14 families) inclulding collection of 51 bird specimens (10 species from 5 families in 1 order). We collected 91 mammals of 6 species, and identified 7 species from field sign and direct observation from a total of 10 families in 5 orders. This collection and list comprise the final vertebrate faunal survey of the Hantangang region, and will provide basic scientific information for future research on conservation and restoration of the region.

황새의 이(蝨) Cuclotogaster heterographus와 Anaticola anseris의 주사전자현미경적관찰(走査電子顯微鏡的觀察) (Cuclotogaster heterographus and Anaticola anseris(Mallophagh; Ischnocera): Collection fram Ciconia boyciana, Description and Observation with Scanning Electron Microscopy)

  • 강영배;변시열
    • 대한수의학회지
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    • 제24권2호
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    • pp.227-236
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    • 1984
  • A migratory bird, the white stork, Ciconia boyciana was captured from a pond in the Cheju Island on the 18th of December in 1982. The morphological characteristics were described as seen in the binocular stereoscopic microscope and the further fine structures were observed by means of the scanning electron microscope (Model; ISI-DS-130). The bird was examined for the ectoparasites at the Cheju Provincial Veterinary Research Laboratory. Two kinds of specimens were collected from the head and body feathers. The specimens were sent to the Institute of Veterinary Research in Anyang for the classification and identification. The specimens preserved in 70% ethyl alcohol were examined and identified as the fowl head-louse, Cuclotogaster heterographus and the slender goose-louse, Anaticola anseris both classified into Family Philopteridae, Ischnocera, Order Mallophaga.

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천연기념물 제 243-1호 독수리(Aegypius monachus)의 월동실태에 관한 연구 (Study on the Wintering of Aegypius monachus, No. 243-1 Natural Monument Bird)

  • 진선덕;유재평;백인환;한성우;김성만;한갑수;강태한;김인규;유승화;이기섭;김수호;김태좌;김성현;최종수;홍길표;조해진;빙기창;강정훈;박치영;김우열;오홍식;백운기
    • 헤리티지:역사와 과학
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    • 제42권1호
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    • pp.62-70
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    • 2009
  • 2008년 1월 11일부터 12일까지 전국 독수리 주요 도래지 및 관찰기록이 있었던 17개 지역을 선정하여 조사하였다. 본 조사에서 관찰된 독수리 월동 개체수는 총 1,912개체로 과거 독수리월동조사와 비교 시 가장 많은 개체수를 기록했다. 독수리는 경기도와 강원도 지역인 중부지방에 1,500개체(78.45%), 경북, 경남, 전남, 제주 등의 남부지방에 412개체(21.55%)가 월동하는 것으로 나타났다. 지역별 독수리의 월동 개체군은 장단반도 777개체, 철원 지역 488개체, 산청군 193개체 등 3개 지역을 중심으로 분포하고 있다. 과거조사와 비교하면 2006년 이후 20~30% 정도가 남부지방으로 분산되고 있다. 이는 먹이주기 행사를 중단한 이후 독수리개체군이 다소 남부지방으로 분산된 것으로 보이나 여전히 특정 지역에 집중되는 결과를 보인다.

괭이갈매기의 인두흡충 감염증 (Infection of Clinostomum Complanatum in a Black-tailed Gull (Larus Crassirostris))

  • 문경하;고규련;윤영민;김재훈
    • 한국임상수의학회지
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    • 제31권4호
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    • pp.354-356
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    • 2014
  • Clinostomum (C.) complanatum is one of the trematode helminthes in birds and causes incidental infection in human. A black-tailed gull (Larus crassirostris) was referred to the Jeju wildlife rescue center. Because of the death of bird after two weeks treatment, necropsy was performed to the bird. Grossly, many living worms adhered to the oral mucosa including pharynx and esophagus were observed. The worms removed were identified as C. complanatum after morphological observation. The linguiform adult worms were $5.19{\pm}0.48mm$ long and $1.80{\pm}0.18mm$ wide. Histopathologically, severe necrosis and surrounding inflammation were observed at the infection sites of adult worm in pharynx and esophagus. This is the first report for C. complanatum infection in wild black-tailed gull in Korea.

Possibility of applying unmanned aerial vehicle (UAV) and mapping software for the monitoring of waterbirds and their habitats

  • Han, Yong-Gu;Yoo, Seung Hwa;Kwon, Ohseok
    • Journal of Ecology and Environment
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    • 제41권5호
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    • pp.145-151
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    • 2017
  • Background: Conventional bird observation methods are line survey or point count method by bare eyes or through binoculars or telescopes. But in this study, the possibility of monitoring waterbirds using drones beyond the conventional research methods was explored. It also describes the direction of producing and accumulating images of waterbird habitats as a method to efficiently determine changes in waterbird habitats. Results: From the study, it was concluded that waterbird monitoring using drones was a new monitoring technique which could be applied to the field and 26 kinds of waterbirds were observed. In the case of a drone with a single lens, it was difficult to identify objects because the size of the subject was too small at a certain altitude. In this case, zoom lens can be an alternative. It has also been verified that image analysis software can be used to accumulate images of waterbird habitats. Conclusions: If various kinds of advanced drones and cameras are used, it would be possible to monitor larger areas including the areas that are difficult for human access and to observe more waterbirds and wider habitats.

제주도에서 나무의 열매와 종자를 섭식하는 조류와 관련 수종 현황 (The Status of Birds Consuming Fruits and Seeds of the Tree and Related Tree Species on Jeju Island, the Republic of Korea)

  • 김은미;강창완;이성연;송국만;원현규
    • 한국환경과학회지
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    • 제25권5호
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    • pp.635-644
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    • 2016
  • Birds play a main role in the formation and change of forest structures as they are seed-dispersal agents. This study aims to identify birds consuming fruits and seeds of the tree and their associated fruits and seeds on Jeju Island in the context on the forest restoration in Korea. We conducted field surveys twice a month from 2013 to 2015 at nine study sites located across Jeju Island and collected available photographic and observation records. A total of 50 species of birds consuming fruits and seeds of the tree were identified and birds belonging to Bombycillidae, Pycnonotidae, Zosteropidae, Sturnidae and Fringillidae were confirmed as major birds consuming fruits and seeds of the tree. Gulping was the dominant type of feeding as well as crushing, but relationship between the size of a bird and the number of fruit and seed species used by the bird was not significant. We also documented that 118 fruit and seed species were consumed by birds and that shrubby fruits and seeds were more consumed by birds than those of other plant types. The relative consumption rate of fruits and seeds ranged from 0.02 to 0.44, but five species were the most important fruits and seeds for birds. Our finding suggest that avian frugivorous gulpers will benefit the seed dispersal, especially of five fruiting plants, providing useful baseline data for forest restoration and urban park design.