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工程前後對水域生物物種組成的影響—以五溝水為例

Change in the Aquatic Organisms’ Community Structure between Riparian Works in the Wugoushui Wetland

摘要


屏東縣萬巒鄉的五溝水湧泉濕地,終年有清澈的泉水注入使其蘊含豐富的生物多樣性。為了瞭解2013年五溝水濕地受治水工程擾動後水生生物的變化,本研究於2011至2015年,於五溝水濕地中進行螺貝類及魚類調查。結果顯示, 魚類與螺貝類族群組成均有明顯的變化,原生物種與特有種的魚類隨著工程結束後變少,外來種魚類在工程結束後有明顯增加的狀況,其中又以2014年時發現外來種—飛鳳(Systom orphoides)最為嚴重;螺貝類中的塔蜷(Thiara scabra)、瘤蜷(Tarebiagranifera)、錐蜷(Stenomelania plicaria)及石田螺(Sinotaia quadrata)也有在工程後數量變少的現象,其他原生種的貝類也慢慢消失,取而代之的是外來種一褔壽螺(Pomacea canaliculata)亦有增加的情況。2011至2015年資料顯示,工程的擾動後已經改變原先的生物組成,降低原有的生物多樣性。

關鍵字

五溝水 工程擾動 生物組成

並列摘要


Wugoushui wetland, where water flows into the surface of the earth from underground, is a spring in Pingtung. This study, sought to investigate the change of aquatic organisms’ community structure of fish and mollusk between riparian works, was collected data during 2011 to 2015. Our results showed that the number of alien species, such as Systomus orphoides and apple snail (Pomacea canaliculata), increased and the number of native species, include of Puntius semifasciolatus, Rhodeus ocellatus ocellatus, Thiara scabra and Sinotaia quadrata decreased after riparian works. This study demonstrates that the riparian works would change aquatic organisms’ community structure, especially in sensitively spring wetland.

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