The extensive construction works of container terminals progressed since 2006 was converted to small scaled construction works or reclaiming works since 2012 in Busan New Port area. To investigate changes in activity of otters with the change of construction work scales, the linear densities of spraints at 15 localities of 5 areas (I-V) near the Busan New Port construction areas were surveyed during the period from 2012 to 2016. As the results, the average linear density of spraints has a tendency to increase since 2014. That is, the linear densities of spraints have increased at the area II and IV where the reclaiming works have been progressed, although have decreased or unchanged in the areas Ⅰ, Ⅱ and Ⅴ where small scaled construction works have been progressed. Based on the fact that there were habitats at the Honamdo in the area II and the Yeondo in the area IV, otters seemed to restore their activities around the habitats as the center regardless of the reclaiming works.

Abstract
 1. 서 론
 2. 연구 방법
  2.1. 조사 지역
  2.2. 조사 방법
 3. 연구 결과
  3.1. 전 연구 영역에 대한 연평균 배설물 선밀도 변화
  3.2. 각 영역 내 지역별 연평균 배설물 선밀도 변화
  3.3. 분기별 평균 배설물 선밀도 변화
 4. 고 찰
  4.1. 부산신항만 공사로 인한 수달의 활동 변화
  4.2. 수달의 활동에 영향을 미치는 환경 요인 검토
 REFERENCES

• 차현기(경성대학교 이과학대학 화학생명과학부) | Hyoun-Gi Cha (School of Chemistry and Life Sciences, Kyungsung University)
• 김지혜(경성대학교 이과학대학 화학생명과학부) | Ji-Hye Kim (School of Chemistry and Life Sciences, Kyungsung University)
• 윤명희(경성대학교 이과학대학 화학생명과학부) | Myung-Hee Yoon (School of Chemistry and Life Sciences, Kyungsung University) Corresponding author