Title page for etd-0211109-102907


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URN etd-0211109-102907
Author Hsin-Yi Sung
Author's Email Address friendsss.tw@yahoo.com.tw
Statistics This thesis had been viewed 5572 times. Download 1112 times.
Department Biological Sciences
Year 2008
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Effect of Nest Structure on Microclimate and Hatching Success of Roseate Tern (Sterna dougallii) on the Islands of Penghu, Taiwan
Date of Defense 2009-01-16
Page Count 55
Keyword
  • nest concealment
  • microhabitat
  • heat stress
  • parental care
  • Abstract Appropriate microclimates are essential for the development of embryos in avian eggs. Physical demands of incubating adults would also be affected by microclimate. The breeding areas of the Roseate Tern (Sterna dougallii) overlap with intense solar radiation and the presence of tropical cyclone and they prefer nest structure with vegetation or rock walls, as these may provide concealment to the surrounding weather. The objectives of this study were to examine the effect of nest structure on the nest microclimate and hatching success. In addition to nest structures, the effect of nest materials and parental incubation behavior on microclimate were also investigated. Results showed that the average temperature of vegetation-removed nests was higher than that of the control group. Rock walls seemed to prevent moisture formed from dew and rain. Incubation behavior can prevent eggs from overheating. However, there were no differences in parental thermal behavior and hatching success between nest types. To sum up, vegetation next to the nest can prevent the eggs from overheating while parents were temporarily absent. Parental incubation can insulate the eggs from surrounding weather stresses, and compensate the negative effect of nest structure with harsh conditions.
    Advisory Committee
  • Yuan-Hsun Sun - chair
  • Hsiao-Wei Yuan - co-chair
  • Hsiao-Wei Yuan - advisor
  • Files
  • etd-0211109-102907.pdf
  • indicate access worldwide
    Date of Submission 2009-02-11

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