• 통합자연과학논문집
• /
• 제15권3호
• /
• pp.111-122
• /
• 2022

The purpose of this study was to investigate the ecological impact of wetlands by changing the species diversity of benthic macroinvertebrates and birds following the creation of an artificial wetland with a size of 30 m*30 m on bare land in reclaimed land in Haenam-gun, Korea. We investigated monthly fauna of benthic macroinvertebrates and birds in and outside wetlands and physicochemical indicators for 7 months from March to September 2014. During the study period, the water temperature and dissolved oxygen levels were consistently higher in wetlands than lakes. Many species of benthic macroinvertebrates were observed in summer (16 species in July) due to seasonal effects, and the species diversity index was highest in July and then gradually decreased. Thirteen species of birds were observed in March, 6 species in April, 5 species in July, and 1 species in June, where most winter birds and migratory birds were observed around wetlands in spring. The species diversity index also decreased after being high in July except for spring. This suggests that the abiotic environment in the wetland can be improved by creating an artificial wetland in the reclaimed land, and the increase in benthic macroinvertebrates can ultimately be a basic direction to restore the wetland ecosystem in the reclaimed land.

• 환경영향평가
• /
• 제4권1호
• /
• pp.65-78
• /
• 1995

The resident attitude for preservation and development of amenity in Eulsuk island and its downstream area at estuary of Nakdong river in Korea were investigated by the questionnaires and the field surveys. Based on the results, the characteristics of this study area are the natural ecological preservation area, natural environmental preservation area and curtural assets for migratory birds. And there are a estuary bank, a Dadae beach and a Molundae park. Special amenities are (1) the light (sunrise, sunset etc), (2) the water(river, sea etc.), (3) the air(fresh wind, beautiful sound etc.), (4) the land space(beautiful view, recreation field, reed area, pine forest etc.) and (5) the stream(dancing of migratory birds, water flow, folk dance, history remains etc.). But at present, the environmental qualities as health, aesthetics safety, amenity and culture are deteriorated by development. So the number of migratory birds are decreasing. The residents desired that in future this area be use for the recreation space, the park and the natural leaning fields etc, as well as the restoration of destroyed resources.

• Parasites, Hosts and Diseases
• /
• 제49권4호
• /
• pp.457-460
• /
• 2011

Adults of Maritrema obstipum (Digenea: Microphallidae) were found in the intestines of 4 species of migratory birds, including the sanderling (Crocethia alba), Kentish plover (Charadrius alexandrines), Mongolian plover (Charadrius mongolus), and red-necked stint (Calidris ruficollis), collected from Yubu Island, Chungcheongnam-do, Korea. The worms of were $451{\times}265{\mu}m$ in size, and were easily identifiable as Maritrema species by the presence of the cirrus sac, and the ring-like distribution of the vitellaria. More specifically, the ejaculatory duct curved posteromedially, and the 2 parts of vitelline follicles were found to be distinct at the posterior end. The eggs were brown-colored, and $19.8{\times}12.3{\mu}m$ in size. All these findings implicated M. obstipum as the pertinent species of the worms. Beside these, adult worms of Gynaecotyla squatarolae, Parvatrema duboisi, and Acanthoparyphium sp. were also discovered. This is the first report establishing migratory birds as the natural definitive hosts for M. obstipum.

• 한국산림과학회지
• /
• 제96권6호
• /
• pp.633-638
• /
• 2007

보리밥나무(Elaeagnus macrophylla)는 해안 인접지의 척박한 토양에서 생육하는 상록성 질소고정 식물로서, 열매의 결실기는 조류의 봄철 이동시기와 일치한다. 보리밥나무의 열매를 이용하는 조류를 파악하고 이들이 보리밥나무의 종자 산포와 발아에 미치는 영향을 밝히기 위하여 2007년 3월부터 4월까지 이동성 조류의 중간 기착지인 전남 선안군 홍도에서 조류 조사 및 종자 발아실험을 실시하였다. 그 결과 찌르레기(Sturnus cineraceus), 직박구리(Hypsipetes amaurotis), 개똥지빠귀(Turdus naumanni) 등 8종의 조류가 보리밥나무 열매를 섭식하였으며, 조류에 의해 소화된 종자는 자연 상태로 파종된 열매에 비해 발아시기가 단축되고 발아율도 높아진 것으로 나타났다. 또 열매를 주로 이용한 찌르레기류의 행동권 분석을 통해 보리밥나무 종자의 잠재적인 산포 범위는 6.9 ha에 이를 수 있는 것으로 예측되었다. 따라서 보리밥나무는 이동시기의 조류에게 중요한 먹이자원을 제공하고, 조류는 보리밥나무 종자의 산포자로서 새로운 지역으로 정착할 수 있는 기회를 주는 것으로 판단된다. 이와 같은 개척자 식물과 종자 산포자간의 상호작용은 척박한 해안 및 도서지역의 훼손된 상록활엽수림과 난대림 생태계의 자연 복원에 활용될 수 있을 것으로 기대된다.

• Parasites, Hosts and Diseases
• /
• 제57권3호
• /
• pp.273-281
• /
• 2019

The infection status of digenetic trematode metacercariae (DTM) was investigated in fishes from 2 representative visiting sites of migratory birds in Gyeongsangnam-do, the Republic of Korea (Korea). A totaly 220 freshwater fishes (7 species) were collected from Junam-jeosuji (reservoir), and 127 fishes (7 species) were also collected from Woopo-neup (swamp) in June and October 2017. As the control group, total 312 fish (22 spp.) from Yangcheon in Sancheong-gun, Gyeongsangnam-do were also collected in June and October 2017. All fishes collected in 3 sites were examined with the artificial digestion method. In the fishes from Junam-jeosuji, more than 4 species, i.e., Clonorchis sinensis, Echinostoma spp., Diplostomum spp. and Cyathocotyle orientalis, of DTM were detected and their endemicy was very low, 0.70. More than 6 species, i.e., C. sinensis, Echinostoma spp., Metorchis orientalis, Clinostomum complanatum, Diplostomum spp. and C. orientalis, of DTM were found in the fishes from Woopo-neup, and their endemicy was low, 5.16. In the fishes from Yangcheon, more than 8 species, i.e., C. sinensis, Metagonimus spp., Centrocestus armatus, C. complanatum, C. orientalis, M. orientalis, Echinostoma spp., and Diplostomum spp., of DTM were detected, and their endemicity was relatively high, 95.48. The percentages of avian trematode metacercariae (ATM) were 99.6% and 94.7% in fishes from Junam-jeosuji and Woopo-neup whereas it was 74.1% in the control site, Yangcheon. The above findings suggested that migratory birds partly affect in endemicity of DTM in the fish in the 2 visiting sites in Gyeongsangnam-do, Korea.

• Journal of Ecology and Environment
• /
• 제42권4호
• /
• pp.285-291
• /
• 2018

The impact of climate change on animals has been globally documented. Especially, migration of birds has been extensively monitored as migratory birds are susceptible to any changes occurring both on breeding grounds and on wintering grounds. However, in contrast to spring migration, the patterns and the factors for autumn migration have not been well documented. In this study, we investigated the relationship with climate condition and the first arrival dates (FADs) of bean geese (Anser fabalis) and white-fronted geese (A. albifrons), the representative group of wintering birds in South Korea, using the data collected by Korean Meteorological Association during 1995-2016. Average temperature of September in wintering grounds has increased, and the FADs of the geese have advanced over the 22 years. Even when the influence of autumn temperature was statistically controlled for, the FADs of the geese have significantly advanced. This suggests that warming has hastened the completion of breeding, which speeded up the arrival of the geese at the wintering grounds. In order to assess the effect of climate condition on the arrival of the wintering migratory birds such as the geese in more detail, extensive data collection over many sampling sites and with long-term monitoring is needed.

• 헤리티지:역사와 과학
• /
• 제42권1호
• /
• pp.62-70
• /
• 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.

• 한국환경과학회지
• /
• 제14권3호
• /
• pp.259-264
• /
• 2005

The purposes of this study were to investigate visitors' environmental attitudes of educational tourism, environmental preservation, and regional economic benefits satisfaction through the Chunsuman Bay Birdwatching Festival. The results of this study were as follows: First, the degree of educational satisfaction was high and this festival provided environmental preservation mind for visitors and local residents as well. The festival participants had a positive attitude toward migratory birds. Especially, the residents who had negative perceptions toward migratory birds due to physical harms of agricultural crops was positively changed after visiting this festival. So there should be prepared for more strategic approaches for residents' visiting and participating this birdwatching festival. Second, while the number of tourists was increased, it did not make a practical contribution to residents' income Particularly, farmers' satisfaction was low. So there should be more strategic programs to improve residents' economic rewards for sustainable development.

• 대한수의사회지
• /
• 제52권5호
• /
• pp.310-311
• /
• 2016

• 대한수의사회지
• /
• 제52권6호
• /
• pp.376-379
• /
• 2016