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   南生圍的外來海桑紅樹 Invasive Sonneratia at NSW
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南生圍的外來海桑紅樹 Invasive Sonneratia at NSW
« on: Dec 5th, 2005, 11:01pm »
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昨天到南生圍一行,見到岸邊有多棵,真的快高長大,比其他土生紅樹高得多。
Found a few along the bank at Nam San Wai yesterday. It's really fast growing, and much taller than the native mangroves.
 
4/12/05 南生圍 Nam San Wai

 
相關資料 Reference Info.:
 
世界自然(香港)基金會 WWF(HK):
 
后 海 灣 遭 外 來 紅 樹 林 入 侵
Deep Bay invaded by exotic mangroves
 
生物數字博物館 The Digital Museum of Biology:
 
Sonneratia Caseolaris 海桑 
Sonneratia apetala 無瓣海桑
 
« Last Edit: Dec 5th, 2005, 11:28pm by Webcreeper » Logged

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Re: 南生圍的外來海桑紅樹 Invasive Sonneratia at NS
« Reply #1 on: Dec 7th, 2005, 12:36am »
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是呀! 去年已經開始很大棵了! 很駭人!  
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Re: 南生圍的外來海桑紅樹 Invasive Sonneratia at NS
« Reply #2 on: Dec 31st, 2005, 5:40pm »
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今期 《香港物種探索》12/2005 有文章介紹。
 
There is an article on this in the "Hong Kong Biodiversity" Dec. 2005 newsletter.
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Re: 南生圍的外來海桑紅樹 Invasive Sonneratia at NS
« Reply #3 on: Feb 6th, 2006, 10:33pm »
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6/2/06 明報 Mingpao
 

無瓣海桑(左)一枝樹幹長有多個果實,海桑(右)則只長一個,是兩種海桑的主 要分別。(漁護署提供)
 
 
Two species of foreign mangrove sonneratia were found at Deep Bay since 2000. They probably came from the artificial Futian mangroves in Shenzhen across the border. AFCD expected that they would not reduce the size of the mudflat because they cannot stand high salinity and their trunks have to stay above water to breathe.
 
 
海桑開枝散葉 無礙紅樹生態
 
【明報專訊】米埔近年來了位「不速之客」,它的名字叫「海桑」,短短5年已在 后海灣外灘落地生根。由於是外來紅樹品種,生長速度又較本港紅樹快,漁農自然  護理署每年都會以人手清除數百棵海桑,避免本地紅樹「無處容身」。幸而海桑與 本地紅樹至今和平共存,它優美的形態還博得該署職員歡心,為它冠以「水上垂柳  」的美譽。
 
目前發現的海桑多生長在米埔的外灘至尖鼻嘴一帶,若繼續向外生長,原來雀鳥覓 食的泥灘面積縮減。不過,郭指出,海桑生長的海水鹽度不能太高,樹幹又要伸出 水面呼吸,相信發生這個現象的機會不大,但會密切留意。
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