HKBWS Office
BBS Member
BBS God
 
Posts: 1316
|
 |
公眾講座：外來家鴉（烏鴉）地域的擴張 (24/4/2004)
« on: Apr 1st, 2004, 9:59pm » |
 Quote  Modify
|
公眾講座：外來家鴉（烏鴉）地域的擴張
－ 香港、南亞及全球性問題
日期及時間：2004年4月24日星期六，下午2時30分 至 4時30分
地點：九龍香港城市大學 四樓 演講廳LT-10
承辦：麗閣邨居民協會 / 大埔環保協進會
贊助：深水埗區議會 / 大埔環保協進會
講者：
- 詹肇泰 博士（自然保育顧問）
- 馮檢基 立法會議員 （香港民主民生協進會主席）
- Navjot S. SODHI 教授（新加坡國立大學生物科學系副教授；亞洲知名家鴉學者）
題目：
(一）家鴉的行為和全球性擴張（由詹肇泰博士以粵語主講並配以英文PowerPoint� ^
(二）家鴉在香港尤其是深水埗區造成的滋擾（由馮檢基議員以粵語主講）
（三）家鴉在新加坡的生態和控制方法（由SODHI教授以英語主講）
題目三之撮要
The house crow (Corvus splendens) has successfully invaded regions well beyond its native range, reaching pest proportions in many areas. Past efforts to control it have met with repeated failures due to a lack of detailed ecological understanding to guide management. The invasive population of house crows in Singapore has increased at least 30-fold since 1985, and now number more than 130,000 birds. Crows are considered a pest in Singapore due to attacks on humans, accumulation of feces under communal roosts, their potential role as vectors for human pathogens, and possible negative impacts on native bird species. To understand the biology of the house crow in Singapore, we collected data on aspects such as the population characteristics, roosting behaviour and nesting ecology. Our study shows that the house crows have adapted well in Singapore where ample resources such as food and suitable nesting and roosting sites are available. Using a discrete-time density dependent population model, we demonstrate that at least 41,000 crows will need to be culled in the first year of a control program, and an equivalent effort maintained each year thereafter within a 10 year period. This figure drops to 32,000 if culling is combined with other management strategies such as resource limitation and nest destruction. A large-scale effort to cull crows in Singapore has started since 2002, however a complete eradication of this species may be unrealistic due to difficulties in detecting crows at low densities and influx of migrants from neighbouring Malaysia.
~ 歡 迎 出 席 ~
－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－ －－－－
《 登 記 》
請填妥以下表格並傳真至大埔環保協進會（傳真：2690 3438）或 把有關資料電郵至taipoea@sinatown.com。登記/入場費港弊20元正（*全日制學生免費，研究生除外）。名額100位，請從速登記。如有查詢，歡迎致電2739 2481大埔環保協進會陳小姐。參加者將會於4月21日前收到電郵確定成功登記。
本人希望參加2004年4月24日舉行之公眾講座，並明白在成功登記後不論出席與否� 雩q務繳付港弊20元正給大埔環保協進會作為登記/入場費。
姓名（英文）：
聯絡電話：
電郵：
組織 / 機構（英文）：
全日制學生*：是 / 否
聯絡地址（英文）:
|
BBS
Help
Search
Members
Login
Register
Reply
Send Topic
Print
Author
Logged