The Study on Habitats and Conservation Strategy of Isoetes taiwanensis DeVol.

• Main Authors: Ming-Chen Chiu, 邱明成
• Other Authors: Yung-Ta Chang
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/59973831400489303267

碩士 === 國立臺灣師範大學 === 生物研究所 === 89 === The major purpose of this research project was to investigate the original and several ex-situ conservation habitats of quillworts in Taiwan , include the dream lake ,the Lengshuikeng wetland and Thu-tzu-hu. We focus on the hydrology and water quality of the Lengshuikeng wetland , located in Yangmingshan National Park, and try to transplant the endemic species quillworts or Taiwan isoetes (Isoetes taiwanensis DeVol). It has been regarded as a potential site for replanting Isoetes due to its acid water quality. Based on on-site investigations, the wetland can maintain wet year-round. The nutrients are sufficient to the submerged plant. In order to enhance the natural function and replanting performance, it is suggested that the wetland could be devide into two major part or make some channel around the wetland to control water level and sand input. For the conservation for Isoetes, Ocadia sinenesis must be isolated out of the water region of Isoetes. Inviding of terraneous vegetation and changing of hydrological character in the dream lake are the serious problem to influence quillwort surviving. Isoetes planted in Zhu-tzu-hu should complete its life-cycle , but still need some management. To constructe a new artifical wetland seems to be a effective strategy for conservation of Isoetes taiwanesis.