博士 / 國立臺灣大學 / 森林環境暨資源學研究所 / 106 / The use of nest boxes by Green-backed tit (Parus monticolus) was monitored in a mosaic landscape of mixed-oak forest and Cryptomeria plantation in the mid-altitude area of Guanwu between 2009 and 2017. Field work falls into three sections that together provide insight and knowledge of breeding behavior of hole-nestling passerines. The first section was to test whether the availability of calcium-rich materials limits reproduction output of birds. Our results found that despite the high acidity of the soil in two habitats, none of the birds in the study population produced eggs with defective shells. The provision of supplementary calcium did not appear to influence reproductive output of birds. Calcium is not currently a limiting micronutrient for egg production by Green-backed Tits. The second section examined how differential larval phenology supported by different tree species in the two habitats affects nestling mass. The larval abundance (Lepidoptera and Hymenoptera sawfly larvae) of dominant tree species was measured via the tree-shaking method. The results showed that the diversity of trees in the broadleaf habitat supported a broader food peak overall that spiked in early spring and gradually declined. In contrast, the coniferous habitat had a lower larval biomass that increased slightly over the season and included a high percentage of hairy lithosiines. Habitat-specific seasonality in larval abundance significantly affected nestling mass in early- and late-season broods. The third section determined what weather cues montane birds use to fine-tune breeding behavior and what factors affects their breeding success from multi-year monitoring data. Our data indicated that March temperatures, but not February–March rainfall affected the laying date for Green-backed Tits. Females shifted their laying dates earlier in response to earlier warm spring weather. Heavy rainfall during the breeding period negatively affects their nest survival. Finally, several life-history traits of the Green-backed tits were estimated and discussed.
| Identifer | oai:union.ndltd.org:TW/106NTU05359045 |
| Date | January 2018 |
| Creators | Ming-Tang Shiao, 蕭明堂 |
| Contributors | 袁孝維 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 88 |
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