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국회도서관 홈으로 정보검색 소장정보 검색

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논문요약 10

I. 서론 12

II. 연구방법 14

1. 연구기간 14

2. 연구지역 14

1) 남한의 번식지 15

2) 번식지 주변의 섭식지 16

3. 번식 현황 18

4. 섭식생태 21

1) 섭식지 21

2) 먹이자원과 섭식행동 22

III. 연구 결과 24

1. 번식현황 24

1) 저어새의 번식지와 개체수 24

2) 도래시기와 번식 단계별 시기 27

3) 미성숙 저어새의 분포와 개체수 29

2. 섭식생태 31

1) 섭식지 31

2) 유도 번식 개체군의 섭식지 33

3) 월별 섭식지 이용 36

4) 무논의 수위와 섭식지 이용 38

5) 먹이자원 40

6) 섭식행동 43

7) 구토물 분석 45

IV. 논의 47

1. 번식현황 47

2. 섭식생태 49

1) 섭식지 49

2) 먹이자원 52

V. 결론 55

참고문헌 56

ABSTRACT 65

부록 67

List of tables

Table 1. Breeding sites survey dates in the neighby DMZ for Black-faced… 18

Table 2. Daily growth of Black-faced Spoonbill chicks(Chong, 1998). 20

Table 3. Survey dates to monitor patterns of Black-faced Spoonbill use of… 21

Table 4. Survey dates for Black-faced Spoonbill's watered rice paddies use and water level(2005). 22

Table 5. Records of Black-faced Spoonbills breeding in South Korea in the early days of research. 24

Table 6. The changes of breeding pairs at breeding colony for Black-faced Spoonbill in South Korea. 26

Table 7. Estimative date of laying of first egg and hatching in each breeding sites. 28

Table 8. Summering Sites of Black-faced Spoonbill in South Korea: April-July, 2004. 29

Table 9. Habitats of Black-faced Spoonbills in South Korea(Kim, 2005). 30

Table 10. Distance between breeding sites and feeding sites for Black-faced Spoonbill. 32

Table 11. The result of selection of feeding area: April-July(2003-2005). 34

Table 12. The monthly result of the distance between the breeding site, Udo and feeding area (2003-2005). 34

Table 13. Monthly comparison of the usage ratio between watered rice paddy… 36

Table 14. Potential prey items collected from watered rice paddies and… 41

Table 15. Comparison of feeding time in terms of food size(p<0.01). 44

Table 16. Types of feeding behavior depending on the feeding sites on Gangwha island. 44

Table 17. The analysis of regurgitation samples of the chicks Black-faced Spoonbills (n=3)*. 46

List of figures

Fig. 1. A map showing the location of breeding sites(□) for Black-faced… 14

Fig. 2. Distribution of Black-faced Spoonbills in Korea(1990-2005)… 25

Fig. 3. Incubating scene of Black-faced Spoonbills at breeding sites: a) Udo… 28

Fig. 4. Black-faced Spoonbills' activity range around their breeding and… 32

Fig. 5. The result of feeding area's selection of the… 35

Fig. 6. The usage ratio of watered rice paddy and tidal flat between April and July(2003-2005). 36

Fig. 7. The monthly result of feeding area's selection of the… 37

Fig. 8. Monthly water level and average numbers of… 39

Fig. 9. Prey items of Black-faced Spoonbill in watered rice paddies… 42

Fig. 10. Frequency distribution of length of fish found in the… 43