• The Korean Journal of Ecology
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• 제24권4호
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• pp.219-222
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• 2001

The study was conducted to get the basic information for proper protection and management of black-faced spoonbill and their habitats in western coast of South Korea. The species was observed in 8 sites of western coast of South Korea in spring 2000. We confirmed breeding of this species at least 4 pairs in Seokdo island. This island is considered likely to be an imortant breeding site together with Yodo island, Hambakdo island and Yokdo island. Also, we observed breeding of herring gull in Seokdo island and small island nearby Boleumdo island for the first time in South Korea. Chilsando island, Cheonsuman bay and Gyeokyeolbiyeoldo island were considered as stopovers located on the Korean Peninsula route. The other sites were considered as summering sites of the black-faced spoonbill. Especially the birds were constantly observed from breeding season to postbreeding season in Seonduri and Yeochari of Ganghwado island. We have counted maximum 88 individuals gathered at Gaksiyeo in Seonduri and Yeochari on September 3, 2000. The species seemed to gather at these sites after breeding for migration to wintering ground in September. We also surveyed changes of the number of individuals as time of the ebb and flow on September 3 and 6, 2000, their time budgets were affected by the ebb and flow in these sites.

• 한국환경복원기술학회지
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• 제26권6호
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• pp.189-203
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• 2023

This study analyzed potential breeding sites for black-faced spoonbills on 70 non-breeding, uninhabited islands in Incheon, Korea, in order to suggest potential breeding sites for black-faced spoonbills, whose breeding population has recently been increasing. By comparing the environmental characteristics of breeding and non-breeding areas identified through a literature search, we developed a discriminant to identify potential breeding areas for black-faced spoonbills. Among a total of eight environmental variables(Island area, distance from land, distance to mudflat, distance to rice field, distance to sea route, depth of water, mudflat area, rice field area), the variables that influenced the selection of breeding sites for black-faced spoonbills were average water depth, tidal flat area, and paddy field area. As a result of discriminant analysis of breeding islands using these variables, the accuracy was found to be quite high at 80%. As a result of applying the developed discriminant to non-breeding islands located in the Incheon region, a total of 9 islands(Yongrando, Goseokdo, Beolyeom, Joreumseom, Goeriseom, Hambakdo, Moido, Bigajido, Ahyeom) were identified as potential breeding grounds for spoonbills. The research results can be used as basic data for future management of black-faced spoonbill breeding sites and selection of alternative habitats.

• Ocean and Polar Research
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• 제41권3호
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• pp.147-157
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• 2019

Our study was conducted to examine differences in incubation behavior among breeding sites and the relationship between factor affecting environmental change and incubation behavior of the Black-faced Spoonbill (Platalea minor). We set up the remote sensor cameras at three breeding sites (Mae-do, Namdongji, Guji-do) to observe incubation behavior in Gyeonggi Bay, South Korea from 2015 to 2018. We analyzed effects of breeding year, day of incubation started, day of incubation, the time of incubation exchanges and sex on incubation bout length. Mean incubation bout length of females (Mae-do: $7.19{\pm}0.23$ hours, Namdongji: $6.08{\pm}0.23$ hours, Guji-do: $7.96{\pm}0.30$ hours) was longer than males (Mae-do: $6.14{\pm}0.21$ hours, Namdongji: $5.45{\pm}0.28$ hours, Guji-do: $7.38{\pm}0.29$ hours). Mean incubation bout length was longer in Guji-do than other study sites. Incubation bout length tended to increase with the clutch initiation date. Males incubated their eggs at day time while female did at night time, these tendencies were observed more clearly in Guji-do. The proportion of time spent incubating of females was higher than males. Males' proportion increased as incubation progressed and increased rate in Guji-do was higher than other study sites. Our results showed that incubation rhythm of the Black-faced Spoonbill differed among breeding sites and varied with the environmental cycle.

• 환경생물
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• 제36권2호
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• pp.165-173
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• 2018

저어새의 먹이생물을 파악하기 위해 2010년 6월부터 2014년 6월까지 인천 남동유수지에서 저어새의 토사물 시료를 채집하여 현미경 관찰 및 차세대염기서열(NGS) 기법으로 분석하였다. 저어새의 먹이생물은 어류, 갑각류, 다모류, 곤충류로 구성되어 있었으며, 주로 저어새는 어류와 갑각류를 섭이하는 것으로 나타났다. 최우점 먹이생물은 풀망둑(Acanthogobius hasta)이었으며, 이 외에도 길게(Macrophthalmus abbreviates), 징거미새우류(Macrobrachium sp.), 칠게(Macrophthalmus japonicus), 각시흰새우(Exopalaemon modestus), 참갯지렁이(Neanthes japonica)가 우점 먹이생물로 출현하였다. 이들 먹이생물은 번식지 인근지역인 송도갯벌과 시화호에서 흔히 발견되며, 저어새는 채식지로써 이들 지역에 대한 의존도가 높을 것으로 판단된다. 현미경과 NGS로 분석한 일부 먹이생물에서 차이를 보였는데, 이는 토사물 내 먹이생물은 저어새의 위 내에서 분해되어 현미경 분석을 통한 형태학적 분류 특징을 찾기 어려웠던 반면, NGS 분석은 유전자를 통해 분류가 가능하기 때문에 형태학적 분석의 결과보다 높은 종 다양성을 보인 결과이다.

• 한국환경과학회:학술대회논문집
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• 한국환경과학회 2002년도 The 10th Anniversary of KENSS International Workshop
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• pp.11-19
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• 2002

• 한국환경생태학회:학술대회논문집
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• 한국환경생태학회 2003년도 추계학술논문발표회 논문집
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• pp.208-210
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• 2003

• 한국해양환경ㆍ에너지학회지
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• 제18권1호
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• pp.45-49
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• 2015

해양 생물에 대한 교란은 해양쓰레기의 악영향 중 하나이다. 이 연구에서는 한국의 서해안에 있는 수하암이라는 섬에서 수행된 조사를 바탕으로 플라스틱 해양쓰레기를 포함하고 있는 저어새 둥지의 비율이 계산되었다. 플라스틱을 포함하고 있는 둥지의 비율은 2010년 71%에서 2011년 37%, 2012년 33%로 줄어들었다. 전체 둥지의 개수는 2010년 28개에서 2011년 38개, 2012년 43개로 늘어났다. 이 번식지에 2011년과 2012년에 나뭇가지와 볏짚 등의 자연물 둥지 재료가 공급되었는데, 이런 보호 활동이 위와 같은 변화의 한 원인으로 보인다. 해양쓰레기의 악영향을 줄이기 위해 추가적인 보호 활동이 필요하다.

• 한국환경생태학회지
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• 제32권5호
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• pp.478-485
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• 2018

저어새(Platalea minor)는 세계자연보전연맹(IUCN)에서 발표한 RedList에 Endangered(EN)로 지정되어 있으며, 2016년 기준으로 3,356개체가 생존하는 것으로 알려지고 있다. 또한 저어새 번식 개체군의 70% 이상은 한국 서해안에서 번식하며, 대만, 중국, 홍콩 등지에서 월동하는 것으로 알려져 있으나 한국을 비롯하여 동아시아 지역에서 저어새의 장거리 이동과 남하 시 서식지에 대한 연구는 현재까지 거의 이루어지지 않은 실정이다. 이 연구에서는 야생동물위치추적기(WT-200, GPS-Mobile phone based telemetry, KoEco)를 이용하여 저어새의 이동 경로와 분포, 중간기착지 및 월동지를 밝히고자 하였다. 위치추적기는 2014년 6월 말 한국의 번식지에서 저어새 유조를 포획하여 부착했다. 추적 결과, 저어새의 남하시기는 10월 말에서 11월 초로 나타났으며, 월동지까지의 이동 거리는 최소 746km, 최대 1,820 km로 평균 1,201 km이었다. 하루 최대 이동 거리는 1,479 km이었으며, 평균 782 km이었다. 월동지까지 이동소요 기간은 평균 10일이었으며, 가장 짧은 기간은 2일이었고 가장 긴 기간은 34일이었다. 대부분의 개체들은 2~3개의 중간기착지를 이용하였으며, 1~2일을 머물렀으며, 주요 중간기착지는 강, 하천, 저수지, 갯벌과 같은 습지였다. 월동지는 중국 해안 지역(5개체), 중국 내륙 지역(1개체), 대만(3개체), 일본(1개체)등 으로 나타났다. 결론적으로 저어새의 이동경로 상에 있는 국가 간의 협의와 보호정책을 통해 이들이 주로 이용하는 중간기착지 및 월동지역을 보전할 필요가 있으며, 향후 지속적인 모니터링과 추가연구를 통해 체계적인 보전대책 및 활동계획 등이 수립되어야 할 것으로 판단된다.

• Journal of Ecology and Environment
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• 제41권1호
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• pp.29-33
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• 2017

This study was conducted to clarify the size of the home range and movement distance of juvenile black-faced spoonbills from post-fledging until fall migration using a Global Positioning System (GPS)-wideband code division multiple access (WCDMA)-based telemetry system along the west coast of South Korea. The home range of juvenile black-faced spoonbills (n = 3) was $45.2km^2$ in size and the core area consisted of $8.4km^2$ within the Baeksu mudflat, Yeonggwang, South Jeolla Province, South Korea. Mean weekly movement distances were not significantly different (Kruskal-Wallis test, Z = 3.47, P = 0.18) among individuals, ranging from 0.1 to 23.9 km during the study period. The home range and movement of juvenile black-faced spoonbills were related to intertidal areas, especially to their use as feeding areas.

• Ocean and Polar Research
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• 제42권1호
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• pp.89-95
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• 2020

Our study was conducted to examine the nest attendance of the Black-faced Spoonbill (Platalea minor) from 2015 to 2018 at two Islets located in Incheon, South Korea. We visited study sites in March-April and set up the remote sensor cameras at two breeding sites (Mae-do, Guji-do) to observe chick-rearing behavior. Mean nest bout length at Mae-do (female: 4.2 ± 0.1 hr, male: 4.0 ± 0.1 hr) was shorter than at Guji-do (female: 5.3 ± 0.2, male: 6.0 ± 0.3 hr), and trip duration at Mae-do (female: 4.4 ± 0.1 hr, male: 4.0 ± 0.1) was also shorter than at Guji-do (female: 7.0 ± 0.2 hr, male: 7.0 ± 0.3). Mean nest bout length and trip duration at both study sites decreased as chick rearing progressed. Males attended their nests during the daytime, and females attended their nests during the nighttime. Our results showed that females and males' duties were divided by the diel cycle, but the pattern of nest attendance could change depending on the environment of their breeding sites during the chick-rearing period.