본문 바로가기
KERD
논문KCI 등재

Feeding activity of cattle egrets and intermediate egrets at different stages of rice culture in Korea

2

조회

0

다운로드

6

인용

0

참고문헌

키워드

주제분류생물학

초록

This study was conducted to investigate the feeding efficiency of the cattle egret (Bubulcus ibis) and the intermediate egret (Ardea intermedia) in relation to the stage of rice culture during two breeding seasons, 2006 and 2007, in Asan city,Chungcheongnam-do, South Korea. Cattle egrets caught mainly small invertebrate prey (insects and spiders, 98.4%)during all stages of rice cultivation, and had a higher prey capture rate in the plowing stage (14.98 prey/min) than in other stages (2.82-3.51 prey/min). Therefore, the biomass intake rate of cattle egrets was highest in the plowing stage. The intermediate egret captured both loaches (43.4%) and small invertebrates (50.6%). The prey capture rates of intermediate egrets increased gradually from the flooding stage (0.38 prey/min) to the planting stage (1.09 prey/min), and decreased in the growing stage (1.04 prey/min). However, intermediate egrets had the highest biomass intake rates in the plowing stage because more loaches were caught in the plowing stage (0.54 loaches/min) than other stages (0.23-0.36loaches/min). Consequently, both intermediate egrets and cattle egrets had high energy intakes in the plowing stage and rice fields provided an important feeding habitat for both species.

Abstract

This study was conducted to investigate the feeding efficiency of the cattle egret (Bubulcus ibis) and the intermediate egret (Ardea intermedia) in relation to the stage of rice culture during two breeding seasons, 2006 and 2007, in Asan city,Chungcheongnam-do, South Korea. Cattle egrets caught mainly small invertebrate prey (insects and spiders, 98.4%)during all stages of rice cultivation, and had a higher prey capture rate in the plowing stage (14.98 prey/min) than in other stages (2.82-3.51 prey/min). Therefore, the biomass intake rate of cattle egrets was highest in the plowing stage. The intermediate egret captured both loaches (43.4%) and small invertebrates (50.6%). The prey capture rates of intermediate egrets increased gradually from the flooding stage (0.38 prey/min) to the planting stage (1.09 prey/min), and decreased in the growing stage (1.04 prey/min). However, intermediate egrets had the highest biomass intake rates in the plowing stage because more loaches were caught in the plowing stage (0.54 loaches/min) than other stages (0.23-0.36loaches/min). Consequently, both intermediate egrets and cattle egrets had high energy intakes in the plowing stage and rice fields provided an important feeding habitat for both species.

참고문헌 (37)

  1. Bayer RD, "Bill length of herons and egrets as an estimator of prey size.Colonial Waterbirds 8:104-109", Colonial Waterbirds, 8, pp.104~109 (1985)
  2. Burger J, "Behavior of nine avian species at a Florida garbage dump", Colonial Waterbirds, 6, pp.54~63 (1983)
  3. Burger J,Gochfeld M, "Age differences in Cattle Egrets Bubulcus ibis, foraging with wild ungulates in Kenya", Ardea, 77, pp.201~204 (1989)
  4. Campos F, "Are rice fields a suitable foraging habitat for Purple Herons during the breeding season?", Waterbirds, 24, pp.450~452 (2001)
  5. 최유성, "Foraging Habitat Preferences of Herons and Egrets", 한국생태학회지, 30(3), pp.237~244 (2007), 한국생태학회
  6. Choi, Yu-Seong, "A Study of Feeding Methods in Five Species of Herons and Egrets in Korea", 한국생태학회지, 31(2), pp.147~151 (2008), 한국생태학회
  7. Dinsmore JJ, "Foraging success of cattle egrets, Bubulcus ibis", Am Midl Nat, 89, pp.242~246 (1973)
  8. Elphick CS, "Functional equivalency between rice fields and seminatural wetland habitats", Conserv Biol, 14, pp.181~191 (2000)
  9. Elphick CS, "Winter management of Californian rice fields for waterbirds", J Appl Ecol, 35, pp.95~108 (1998)
  10. Fasola M, "Resource use of foraging herons in agricultural and nonagricultural habitats in Italy", Colonial Waterbirds, 9, pp.139~148 (1986)
  11. Fasola M, "The value of rice fields as substitutes for natural wetlands for waterbirds in the Mediterranean region", Colonial Waterbirds, 19(1), pp.122~128 (1996)
  12. Fasola M, "Rice fields support a large portion of herons breeding in the Mediterranean region", Colonial Waterbirds, 19(1), pp.129~134 (1996)
  13. Fujioka M, "The impact of changing irrigation practices in rice fields on frog populations of the Kanto Plain,central Japan.Ecol Res 12:101-108", Ecol Res, 12, pp.101~108 (1997)
  14. Fujioka M, "Value of fallow farmlands as summer habitats for waterbirds in a Japanese rural area", Ecol Res, 16, pp.555~567 (2001)
  15. González-Solís J, "Seasonal variation of waterbird prey in the Ebro Delta rice fields", Colonial Waterbirds, 19(1), pp.135~142 (1996)
  16. Hafner H, "Use of artificial and natural wetlands as feeding sites by Little Egrets (Egretta garzetta L.) in the Camarge, southern France", Colonial Waterbirds, 9, pp.149~154 (1986)
  17. Kazantzidis S, "Foraging ecology and conservation of feeding habitats of Little Egrets (Egretta garzetta) in the Axios River delta, Macedonia, Greece", Colonial Waterbirds, 19(1), pp.115~121 (1996)
  18. Kushlan JA, "Heron Conservation" (2000), Academic Press
  19. Kushlan JA, "The Herons" (2005), Oxford University Press
  20. Lane SJ, "The impact of changes in irrigation practices on the distribution of foraging egrets and herons (Ardeidae) in the rice fields of central Japan", Biol Conserv, 83, pp.221~230 (1998)
  21. Lee JH, "Arthropod community structures in rice fields in Korea. In: Ecology of Korea", pp.257~269 (2002), XIII INTECOL International Congress of Ecology
  22. Lombardini K, "Foraging success and foraging habitat use by Cattle Egrets and Little Egrets in the Camargue, France", Condor, 103, pp.38~44 (2001)
  23. Maeda T, "Patterns of bird abundance and habitat use in rice fields of the Kanto Plain, central Japan", Ecol Res, 16, pp.569~585 (2001)
  24. Metz KJ, "Do cattle egrets gain information from conspecifics when foraging? Oecologia 86:57-61", Oecologia, 86, pp.57~61 (1991)
  25. Narusue M, "The effect of structural changes of paddy fields on foraging egrets", Strix, 12, pp.121~130 (1993)
  26. Ormerod SJ, "Editor’s introduction: birds and agriculture", J Appl Ecol, 37, pp.699~705 (2000)
  27. Ovenden GN, "Agri-environmental schemes and their contribution to the conservation of biodiversity in England", J Appl Ecol, 35, pp.955~960 (1998)
  28. Richardson AJ, "Are rice fields in southeastern Australia an adequate substitute for natural wetlands as foraging areas for egrets?", Waterbirds, 26, pp.353~363 (2003)
  29. Richardson AJ, "The foraging ecology of egrets in rice fields in southern New South Wales, Australia", Waterbirds, 24, pp.255~264 (2001)
  30. Sato N, "Foraging site preference of Intermediate Egrets Egretta intermedia during the breeding season in the eastern part of the Kanto Plain, Japan", J Yamashina Inst Ornithol, 28, pp.1~34 (1996)
  31. StatSoft, "STATISTICA for Windows. Version 7" (2004), StatSoft, Inc
  32. Thompson CF, "The influence of foraging benefits on association of Cattle Egrets (Bubulcus ibis) with cattle", Oecologia, 52, pp.167~170 (1982)
  33. Tojo H, "Habitat selection, foraging behaviour and prey of five heron species in Japan", Jap J Ornithol, 45, pp.141~158 (1996)
  34. Tourenq C, "Effects of cropping practices on the use of rice fields by waterbirds in the Camargue, France", Agr Ecosyst Environ, 95, pp.543~549 (2003)
  35. Wilson AL, "Effects of different management regimes on aquatic macroinvertebrate diversity in Australian rice fields", Ecol Res, 23, pp.565~572 (2008)
  36. Yamazaki M, "Composition and structure of aquatic organism communities in various water conditions of a paddy field", Ecol Res, 19, pp.645~653 (2004)
  37. Zar JH, "Biostatistical Analysis. 4th ed" (1999), Prentice Hall International

관련 논문AI추천

이 간행물의 다른 논문 (10건)