Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
권호 표지
DOI QR코드

DOI QR Code

Use of stream environment by river otters in Hongcheon river, Gangwon Province, Korea

강원도 홍천강 유역의 수달 서식지 이용

  • Lee, Sangdon (Dept. of Environmental Sciences and Engineering, Ewha Womans University)
  • 이상돈 (이화여자대학교 환경공학과)
  • Received : 2015.10.08
  • Accepted : 2015.11.04
  • Published : 2015.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study aims at favorable environmental conditions by river otter residing in Hongcheon river ecosystems using spraints along the river. Otter spraints were indicative of habitat use pattern and marking a territory in the areas. Nae-chon and Kuneob-chon river otter spraints were collected totaling 478 with 8 times during 2009-2011, and based on the number river use patterns were analyzed with the technique of index of dispersion. Results with larger than one indicated that river otter habitat use pattern were not random; instead they used preferred areas for habitat use. 'I' values greater than one indicate a clumped distribution and lower than one indicate random distribution. This study also demonstrated that we need a sophiscated linear model that should be developed to identify key habitat elements in river ecosystems.

본 연구는 강원도 홍천강 유역에 서식하는 수달이 선호하는 지역을 파악하기 위해 수달의 배설물을 이용하여 하천환경의 현황을 분석하였다. 수달의 배설물은 영역표시 및 서식지이용에 대한 근거로 활용되기 때문이며, 이를 통한 하천의 주요 서식지를 확인할 수 있다. 내촌천과 군업천의 수달은 2009-2011년 총 8회 기간에 478개의 서식흔적이 발견되는 지점을 중심으로 조사되었으며 서식지 이용현황을 파악하기 위한 분산지수를 활용하였다. 두 하천 모두 계절적 이용의 변화가 나타났으며, 분산지수 값 1은 배설물이 집중되는 것을 의미하며 이는 하천 이용이 임의적이 아닌 것임을 나타내었다. 수달은 하천 주변의 5m 이내의 지역이며, 어류와 잔목이 풍부한 수변지역을 선호하는 것으로 나타났다. 수달의 서식지 이용에 대한 정확한 환경조건을 파악하기 위한 모델의 개발이 시급한 것으로 조사되었다.

Keywords

References

  1. Bas, N, Jenkins, D and Rothery, P (1984). Ecology of otters in Northern Scotland: v. the distribution of otter (Lutra lutra) faeces in relation to bankside vegetation on the river dee in summer 1981, J. of Applied Ecology. 21(2), pp. 507-513. https://doi.org/10.2307/2403425
  2. Cultural Heritage Administration (2003). Natural Monuments White Paper. [Korean Literature]
  3. Duarte, J, Farfan, MA and Vargas, JM (2011). The use of artificial lakes on golf courses as feeding areas by the otter (Lutra lutra) in Southern Spain, IUCN otter Spec. Group Bull. 28(1), pp. 17-22.
  4. Guisan, A and Zimmermann, NE (2000). Predictive habitat distribution models in ecology, Ecological Modelling. 135, pp.147-86. https://doi.org/10.1016/S0304-3800(00)00354-9
  5. Han, SY (1998). The ecological studies of Eurasian otter (Lutra lutra) in South Korea, Ph. D. Dissertation, Kyoungnam University, Changwon, Korea. [Korean Literature]
  6. Kienast, F, Brzeziecki, B and Wildi, O (1996). Long-term adaptation potential of central European mountain forests to climate change: a gis-assisted sensitivity assessment, Forest Ecology and Management 80, pp. 133-53. https://doi.org/10.1016/0378-1127(95)03633-4
  7. Kienast, F, Wildi, O and Brzeziecki, B (1998). Potential impacts of climate change on species richness in mountain forests -an ecological risk assessment, Biological Conservation 83, pp. 291-305. https://doi.org/10.1016/S0006-3207(97)00085-2
  8. Kruuk, H (1995). Wild Otters: Predation and Populations: Oxford Univ. Press. New York, NY, USA.
  9. Leathwick, JR (1998). Are New Zealand's nothofagus species in equilibrium with their environment? J. of Vegetation Science 9(5), pp. 719-32. https://doi.org/10.2307/3237290
  10. Lee, SD (2012). Studies on Food Items of River Otter Residing in the Hongchon Stream, J. of Korean Wetlands Society. 14(4), pp. 591-596. [Korean Literature]
  11. Margules, CR, Austin, MP, Mollison, D and Smith, F (1994). Biological models for monitoring species decline: the construction and use of data bases, Philosophical Transactions of The Royal Society B Biological Sciences B 344, pp. 69-75. https://doi.org/10.1098/rstb.1994.0053
  12. Mason, CF and Macdonald, SM (1986). Otters: Ecology and Conservation: Cambridge University Press. Cambridge, United Kingdom/New York, NY, USA.
  13. Mason, CF and Macdonald, SM (1987). The use of spraints for surveying otter Lutra lutra populations: an evaluation, Biological Conservation. 41(3), pp.167-177. https://doi.org/10.1016/0006-3207(87)90100-5
  14. Melquist, WE and Hornocker. MG (1983). Ecology of river otters in west central Idaho. Wildlife Monographs 83, pp. 1-60.
  15. Ministry of Construction and Transportation (2004). Report on River Management Plan. [Korean Literature]
  16. Ministry of Environment (2008). Wild Fauna and Flora of Korea. [Korean Literature]
  17. Park, B (2010). A study on the habitat of Hongcheon stream and feces analysis of Eurasian otter (Lutra lutra) in Korea, Master's Thesis, Ewha Womans University, Seoul, Korea. [Korean Literature]
  18. Park, B and Lee, SD (2012). Studies on river otter habitat use pattern on Hongchun river in Gangwon province, J. of Korean Wetlands Society. 14(3), pp. 413-148. [Korean Literature]
  19. Pielou, EC (1969). An Introduction to Mathematical Ecology. John Wiley & Sons, New York.
  20. Romanowski, J, Cygan, M and Brzezinski, JP (1996). Notes on the technique of the otter field survey, Acta Theriologica. 41, pp. 199-204. https://doi.org/10.4098/AT.arch.96-19
  21. Rosenzweig, ML (1968). Net primary productivity of terrestrial communities: prediction from climatological data, The American Naturalist. 102(923), pp. 67-74. https://doi.org/10.1086/282523
  22. Ruiz-Olmo, J and Palazon, S (1997). The diet of the otter (Lutra lutra L., 1758) in Mediterranean freshwater habitats, Wildlife Restoration. 2(2), pp.171-181.