碩士 / 東海大學 / 環境科學與工程學系 / 97 / Abstract
The extensive tidal flats of Han-pao and Wangkung are the main feeding sites for shorebirds at low tide. But they are flooded at spring high-tide, thus the shorebirds must search for inland roosting sites. The most common roosting sites they choose at Han-pao and Wang-Kung are the bunds of fish pond. In order to understand what kinds of environmental factors affect the choice of these roosting shorebirds, I recorded the differences in micro-habitat factors of the bunds of fish ponds used by the wintering Kentish Plovers and Dunlins which were the most common species in winter during December 2007 to February 2009. I also observed the disturbance factors. My result showed that the environmental factors of bund affect shorebird roosting including bund length, bund width and vegetation coverage. Shorebirds preferred the longer bund length, narrower bund width and lower vegetation coverage. About disturbance, I found that when the wind speed was high, shorebirds used leeward side of bunds to avoid the wind. My result showed that the presence of raptors and dogs caused shorebirds to fly, but human and vehicle disturbance were not significant.
Key words: shorebird、fish pond、bund、roost、micro-habitat preference、disturbance
| Identifer | oai:union.ndltd.org:TW/097THU00518011 |
| Date | January 2009 |
| Creators | Yen Chen Lai, 賴彥辰 |
| Contributors | Peter Chen, 陳炳煌 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 57 |
Page generated in 0.0109 seconds