陽明山國家公園內的夢幻湖長期以來一直是台灣水韭唯一的自然棲息地，然而夢幻湖漸漸演替成沼澤形態的生態系，且陸生物種有加速入侵的趨勢，嚴重壓縮台灣水韭的生長空間。
夢幻湖因降雨量大、有出水口導致湖水的水位變動很大，推測當浚深區水位達20公分上下時出水口不再出水。夢幻湖的氣溫、光量隨著不同季節而變動；其因常常有霧，一天光量大小變動極大，然而其光質分析與平地無顯著差異，陰天與晴天的光質比較也沒有顯著差異，然棲地之生態因子與台灣水韭生長的相關性，有待進一步探討。此外，在冷水坑人工溼地的台灣水韭族群以樹林下的生長狀況最好，可移植更多台灣水韭於當地種植；竹子湖種植的台灣水韭族群，因為有藻類共同競爭陽光的問題，仍在模擬台灣水韭最適生長狀況。
夢幻湖的植被物種分布，浚深區與湖區的狹葉泥炭蘚的量並無顯著差異。以夢幻湖空照圖看植被分布，並與民國90年的空拍圖比較，台灣水韭生長的範圍有被針藺壓縮的趨勢；若以穿越線調查植被，以狹葉泥炭蘚出現頻率最高，在浚深區亦為出現量最多，然而在湖區的穿越線出現量最多的為針藺，其次為台灣水韭與水毛花；樣區植被變遷，台灣水韭與狹葉泥炭蘚在樣區的分布面積比例下降，莩藎與水毛花的面積分布比例提高，然而是否為植被演替或為季節性消長，仍有待後續研究。
在浚深區與湖區的台灣水韭生長狀況比較，浚深區的台灣水韭葉片較長，而湖區的葉片數較多，此為不同區的環境不同導致，然而台灣水韭葉片面積與植株密度並無顯著差異，因此民國81年陽明山國家公園處理的浚深工作對擴展台灣水韭棲地是有利的。
在台灣水韭族群遺傳研究方面，以夢幻湖與冷水坑的族群同功異構酵素檢測二者間的遺傳距離為0.021，顯示兩區域的族群類似，經合併族群檢測哈溫平衡，顯示台灣水韭族群沒有在哈溫平衡的狀態下。

The Dream Lake in Yangmingshan National Park is the only natural habitat of Isoetes taiwanensis. The succession took place in Dream Lake so that it has gradually turned into the ecosystem of swamp, and the land plants in Dream Lake have spread more widely. As a result, the habitat of Isoetes taiwanensis has severely been affected .
Two factors- the heavy rainfall in Dream Lake, and an outlet located in the southeast of Dream Lake have resulted in the tremendous variation of water level in Dream Lake. It is inferred that when the water level in the dredged area of Dream Lake is about 20cm high, there is no outflow from the outlet. The temperature and the amount of light in Dream Lake vary from season to season. Since the Dream Lake is usually shrouded in mist, the amount of light in one day fluctuates tremendously. Although there is no statistically significant difference not only between Dream Lake and the plain, but also between sunny days and misty days, it still can’t be concluded that the ecological factors of the habitat and the growth of Isoetes taiwanensis are completely unrelated. Further more, a comparison was made among different areas in the artificial wetland of Lan-Shue-Ken concerning the growth condition of the Isoetes taiwanensis, the Isoetes taiwanensis grows best in the area under the shade of trees. Therefore, more liverworts have been transplanted. The growth condition of Isoetes taiwanensis population in Bamboo Lake is characterized by the fact that there are some algae competing with Isoetes taiwanensis for light, and now the most suitable growth condition is still being simulated.
In this study, there are four findings of the distribution of plant species in Dream Lake, there is no statistically significant difference between the undredged area and dredged area of Dream Lake in dried weight of Sphagnum cuspidatum. Next, after comparing the aerial photography of Dream Lake in this study with that in 2001, the superficial measure of Isoetes taiwanensis has decreased, but the superficial measure of Eleocharis congesta has increased. Third, according to the results derived by the line transect sampling, Sphagnum cuspidatum, occurs most frequently and is the most abundant species in dredged area of Dream Lake. In the undredged area of Dream Lake, Eleocharis congesta is the most abundant species; Isoetes taiwanensis and Schoenoplectus mucronatus are second in abundance to Eleocharis congesta. According to the conversion of species in the sampling area in this study, the superficial measure of Isoetes taiwanensis and that of Sphagnum cuspidatum have decreased, but the superficial measure of Sphaerocaryum malaccense and that of Schoenoplectus mucronatus. Further study is needed to investigate whether such a conversion has resulted from ecological succession or from seasonal variation.
When the growth condition of Isoetes taiwanensis in the undredged area and dredged area in Dream Lake is compared, the length of the leaves of Isoetes taiwanensis is longer in the dredged zone and the number of leaves of one liverwort is larger in the undredged area. This phenomenon is caused by different environment of the lake. However there is no significant difference between the undredged area and the dredged area in terms of the superficial measure of one leaf and the density of Isoetes taiwanensis. Therefore, the work to dredged in Dream Lake by Yangmingshan National Park in 1992 was more advantageous to the expansion of the habitat of Isoetes taiwanensis.
There are two major findings regarding the population genetics of Isoetes taiwanensis. Isozyme of the subpopulations in Dream Lake and Lan-Shui-Ken were tested. The genetic distance between the two subpopulations is 0.021, meaning that the two subpopulations are similar to each other. When the two subpopulations were pooled, and the Hardy-Weinberg equilibrium was tested, the population of Isoetes taiwanensis is not in the Hardy-Weinberg equilibrium.

王如意、易任，1979。應用水文學(上)。茂昌圖書有限公司。
邱明成，2001。台灣水韭棲地及其復育策略之研究。國立台灣師範大學碩士論文。
李瑞宗，1988。夢幻湖與鴨池之植物相分析。中華植物學會通訊20：14。
陳幸鐘，1975。七星山植物生態之研究。台灣大學植物所碩士論文。
陳鎮東、王冰潔，1997。台灣的湖泊與水庫。渤海堂文化公司。
張永達、邱文彥，2000。陽明山國家公園冷水坑溼地台灣水韭移植與調查暨水質水文與湖泊變遷調查計劃。內政部營建署陽明山國家公園管理處。
張永達、黃生，2001。陽明山國家公園長期生態研究規劃。內政部營建署陽明山國家公園管理處。
張永達、楊冠政，1987。台灣水韭之生理研究。台灣師範大學生物所碩士論文。
張永達、楊冠政，1988。台灣水韭景天酸代謝現象之研究。師大生物學報23：157-165。
張永達、楊冠政、童武夫，1991。光照對台灣水韭葉片生長之影響。師大生物學報26：1-9。
郭城孟，2001。蕨類入門。遠流出版事業股份有限公司。
黃淑芳，1982。台灣水韭的孢子生成及配子生成。台灣大學植物所碩士論文。
黃淑芳，1987。台灣水韭的胚胎發育。台灣大學植物所博士論文。
黃淑芳、楊國禎，1991 。夢幻湖傳奇-台灣水韭的一生。內政部營建署陽明山國家公園管理處。
黃鈞蕙、陳西村、賴明洲、張永達，2001。金門國家公園水韭棲地及其形態之初探，植物多樣性-從基因到生態系研討會(論文摘要)。中華植物學會，p66。
黃增泉、江蔡淑華、陳尊賢、黃淑芳、楊國禎、陳香君，1988。夢幻湖植物生態系之調查研究。內政部營建署陽明山國家公園管理處。
鄭先祐、劉炯錫，1987。陽明山國家公園夢幻湖生態保護區生態系之研究 第一期期末報告。內政部營建署陽明山國家公園管理處。
劉聰桂，1990。夢幻湖及附近窪地之剖面分析及定年研究。內政部營建署陽明山國家公園管理處。
劉一新，1997。加拿大永續經營之準則與指標。行政院農業委員會林業試驗所。
謝長富、黃增泉、楊國禎、謝宗欣，1990。陽明山國家公園稀有植物族群生態調查。內政部營建署陽明山國家公園管理處委託中華民國自然生態保育學會調查，p7-9。
Ackleson, S. G. and V. Klemas, 1987. Remote sensing of submerged aquatic vegetation in Lower Chesapeake Bay: a comparison of Landsat MSS to TM imagery. Remote Sensing Environ. 22：235-248.
Akcakaya, H., M., A. Burgman and L. R. Ginzburg, 1999. Applied Population Ecology Principles and Computer Exercises using RAMAS EcoLab 2.0. Sinauer Associates, Inc.
Ballesteros, E., E. Gacia and L. Camarero, 1989. Composition, distribution and biomass of benthic macrophyte communities from Lake Baciver, a Spanish alpine lake in the central Pyrenees. Ann. Limnol. 26(2)：177-184.
Barrett, S. C. H., C. G. Eckert and B. C. Husband, 1993. Evolutionary processes in aquatic plant populations. Aquat. Bot. 44：105-145.
Britton, D. M. and D. F. Brunton, 1993. The spores and affinities of Isoetes taiwanensis. Fern Gazette. 14(2)：73-81.
Brown, A. H. D., 1979. Enzyme polymorphism in plant populations. Theoret. Pop. Biol. 15：1-42.
Buchanan, B. B., 1984. The ferredoxin/thioredoxin system: A key element in the regulatory function of light in photosynthesis. BioScience. 34：378-383.
Caldwell, D. E. and J. M. Tiedje, 1975. The stricture of anaerobic bacterial communities in the hypolimnia of several Michigan lakes. Can. J. Microbiol. 21：377-385
Caplen, C.A. and C. R. Werth, 2000. Isozymes of the Isoetes riparia Complex, I. Genetic variation and relatedness of diploid species. Syst. Bot. 25(2)：235-259.
Caplen, C.A. and C. R. Werth, 2000. Isozymes of the Isoetes riparia Complex, II. Ancestry and relationships of polyploids. Syst. Bot. 25(2)：260-280.
Carlson, R. E., 1977. A trophic state index for lakes. Limnol. Oceanogr. 22：361-369.
Catalan, J., L. Camorero, E. Gacia, E. Ballesteros and M. Felip, 1994. Nitrogen in the Pyrenean lakes (Spain). In J. Fott,(ed.), Limnology of Mountain Lakes. 17-27.
Chang, H. J. and K. S. Hsu, 1977. Isoetes taiwanensis DeVol and its associates. Quart. J. J. Chinese For. 10(2)：138-142.
Chang, Y. T., 1997. Die okologische und physiologische charakterisierung von Isoetes taiwanensis DeVol an wechselfeuchten standorten. Dissertation Zur Erlangung des akademischen grandes, Doktor der philosophie an der formal-und naturwissenschaftlichen fakultat der universitat wien.
Clapham, A. R., T. G. Tutin and D. M. Moore, 1987. Flora of the British Isles, Cambridge. P3.
Clarke, G. L., 1939. The utilization of solar energy by aquatic organisms. In problems in lake biology. Publ. Am. Assoc. Adv. Sci. 10：27-38.
Clymo, R.S., 1963. Ion exchange in Sphagnum and its relation to bog ecology. Ann. Bot. 27：309-324.
Cooper-Driver, G. A. and C. H. Haufler., 1983. The changing role of chemistry in fern classification. British Fern Gaz. 12：283-294.
Cooper-Driver, G., 1976. Chemotaxonomy and phytochemical ecology of bracken. J. Linn. Soc. Bot., 73：35-46.
Crawford, D. J., 1983. Phylogenetic and systematic inferences from electrophoretic strdies. In S. O. Tanksley and T. J. Orton [eds.], Isozymes in plant genetics and breeding, Pt. A. Elsevier Amsterdam. P257-287.
Crawford, D. J., 1985. Electrophoretic data and plant speciaton. Syst. Bot. 10：405-416.
Crawford, M. A., M. Droux, M. S. Kosower and B. B. Buchanan, 1989. Evidence for function of the ferredoxin/thioredoxin system in the reductive activation of target enzymes of isolated intact chloroplasts. Archives of Biochemistry and Biophysics. 271：223-239.
Dale, H. M. and C. E. Garton, 1984. Aquatic macrophyte vegetation of an isolated island lake adjacent to Lake Nipigon, Ontario: A comparative study after a fifty-six year interval. Canadian. Field Naturalist 98(4)：444-450.
Denis, E. H., W. William and G. J. Stephen, 1994. Applied statistics for the behavioral sciences. Houghton Mifflin Company. Boston.
Dervieux, A. and A. Tamisier, 1987. Submerged macrophyte beds of Camargue wetlands: estimation of their distribution and size by the interpretation of air photos. Acta Oceol. 8：371-385.
DeVol, C. E., 1972. Isoetes found on Taiwan. Taiwania 17(1)：1-7.
Duff, R. J. and A. M. Evans.,1992. Allozyme electrophoresis and the taxonomy of two species of Isoetes in the southeastern Appalachians. Am. Fern J. 82：129-141.
Ford, D. M., J. J. Jablonski, A. H. Mohamed and L. E. Anderson, 1987. Protein modulase appears to be a complex of ferredoxin, ferredoxin/thioredoxin reductase, and thioredoxin. Plant Physiology. 83:628-632.
Fott, J., M. Prazakova, E. Stuchlik and Z. Stuchlikova, 1994. Acidification of lakes in Sumava (Bohemia) and in the High Tatra Mountains (Slovakia). In J. Fott(ed.), Limnology of Mountain Lakes. 37-47.
Gacia, E. and E. Ballesteros, 1998. Effects of building up a dam in a shallow mountain lake (Baciver, central Pyrenees, Spain). Oecol. Aquat. 11：55-66.
Gacia, E., E. Ballesteros, L. Camarero, O. Delgado, A. Palau, R. J. Lluis and J. Catalan, 1994. Macrophyte form lakes in the eastern Pyrenees: community composition and ordination in relation to environmental factors. Freshwat. Boil. 32(1)：73-81.
Gastony, G. J. and L. D. Gottleb, 1982. Evidence for genetic heterozygosity in a homosporous fern. Am. J. Bot. 72：257-267.
Gate, D. M., 1962. Energy Exchange in the Biosphere. New York, Harper and Row Publishers.
Geroge, H. M., 1955. Taxonomy of vascular plants. The Macmillan company, New York. P335, 340.
Gottlieb, L. D., 1981a. Electrophoretic evidence and plant populations. Prog. Phytochem. 7：1-46.
Gottlieb, L. D., 1981b. Gene numbers in species of Astereae that have different chromosome numbers. Proc. Natl. Acad. Sci. USA 78：3726-3729.
Gottlieb, L. D., 1982. Conservation and duplication of isozymes in plants. Science 216：373-380.
Gottlieb, L. D., 1984. Isozyme evidence and problem solving in plant systematics. In W. F. Grant [ed.], Plant biosystematics. Academic Press, Orlando, FL. p343-357.
Grahn, O., 1986. Vegetation structure and primary production in acidified lakes in southwestern Sweden. Experientia. 42(5)：465-470.
Hamrick, J. L., 1982. Plant population genetics. Am. J. Bot. 69；1685-1693.
Hartl, D. C. and A. G. Clark, 1989. Principles of population genetics. Sinuar associates. Inc. Sundreland, Massachusetts.
Haufler, C. H., 1987. Electrophoresis is modifying our concepts of evolution in homosporous pteridophytes. American Journal of Botany. 74：953-966.
Hickey, R. J., 1986. The early evolutionary and morphological diversity of Isoetes with descriptions of two new Neotropical species. Syst. Bot. 11：309-321.
Hickey, R. J., S. I. Guttman and W. H. Eshbargh, 1989. Evidence for post-translational modification of triose phosphate isomerase(TPI) in Isoetes(Isoetaceae). Amer. J. Bot. 76: 215-221.
Huang, T. C. and H. J. Chen, 1987. The pollen analysis of the Dream Lake, Taipei, Yang Ming Shan National Park. J. Palynol. 23-24：213-216.
Hunag, T. C., H. J. Chen and L. C. Li, 1992. A palynological study of Isoetes taiwanensis DeVol. Am. Fern. J. 82(4)：142-150.
Hutchinson, G. E., 1957. A Treatise on Limnology. I. Geography, Physics, and Chemistry. New York, John Weliy & Sons, Inc.
Johnson, D. M., R. R. Petersen, D. R. Lycan, J. W. Sweet and M. E. Meuhaus, 1985. Atlas of Oregon Lakes, Oregon State University Press, Corvallis, Oregon.
Klekowski, E. J. J. and H. G. Baker, 1966. Evolutionary significance of polyploidy in th ePteridophyta. Science 153：305-307.
Klekowski, E. J. J. and R. M. Lloyd, 1968. Reproductive biology of the Pteridophyta, I. General considerations and a study of Onoclea sinsibilis L. Jour. Linn. Soc. Bot. 60：315-324.
Laushman, R. H., 1993. Population genetics of hydrophilous angiosperms. Aquat. Bot. 44：181-228.
Lloyd, R. M., 1974. Reproductive Biology and evolution in the Pteridophyta, Ann. Missouri Bot. Gard. 61：318-331.
Martin, C. and C. D. K. Cook, 1996. Wiesneria triandra (Dalzell) Micheli (Alismetaceae): a rare and unusual south Indian endemic. Aqua. Bot.55：115-131.
Mitton, J. B., Y. B. Linhart, K. B. Sturgeon and J. L. Hamrick, 1979. Allozyme polymorphism detected in mature needle tissue of ponderosa pine. J. Hered. 70：86-89.
Nei, M., 1977. F-statistics and analysis of gene diversity in subdivided populations. Ann. Human Genet. 41：225-233.
Nohara, S., 1991. A study on annual changes in surface cover of floating-leaved plants in a lake using aerial photography. Vegetatio. 97：125-136.
Orth, R. J. and K. A. Moore, 1981. Submerged aquatic vegetation of the Chesapeake Bay: past, present and future. 46th No. Am. Wildl. Reserve conf., Wildlife Manage. Inst. Washington DC. 271-283.
Orth, R. J. and K. A. Moore, 1983. Submerged vascular plants: techniques for analyzing their distribution and abundance. Mar. Technol. Soc. J. 17：38-52.
Penuelas, J., J. A. Gamon, K. L.Griffin and C. B. Field, 1993. Assessing type, biomass, pigment composition and photosynthetic efficiency fo aquatic vegetation from spectral reflectance. Remote Sensing Environ. 48：110-118.
Pffeifer, N. E., 1922. Monograph of Isoetaceae. Ann. Miss. Bot. Gard. 9：76-232.
Ranker, T. A., 1992. Genetic diversity, mating systems, and interpopulation gene flow in neotropical Hemionitis palmate L. (Adiantaceae). Heredity 69：175-183.
Ranker, T. A., C. H. Haufler, P. S. Soltis and D. E. Soltis, 1989. Genetic evidence for allopolyploidy in the neotropical fern Hemionitis pinnatifida (Adiantaceae) and the reconstruction of an ancestral genome. Syst. Bot. 14：439-447.
Roelofs, J. G. M., T. E. Brandrud and A. J. P. Smolders, 1994. Massive expansion of Juncos bulbosus L. after liming of acidified SW Norwegian lake. Aquat. Bot. 48(3-4)：187-202.
Rorslett, B. and P. Brettum, 1989. Genus Isoetes in Scandinavia: An ecological review and perspectives. Aquat. Bot. 35(3-4)：223-261.
Rorslett, B. and S. W. Johansen, 1995. Dynamic response of the submerged macrophyte, Isoetes lacustris, to alternating light levels under field conditions. Aquat. Bot. 51(3-4)：223-242.
Rorslett, B., 1987. Niche statistics of submerged macrophytes in Tyrifjord, a large oligotrophic Norwegian Lake. Archiv fuer Hydorbiologie 111(2)：283-308.
Sauberer, F., 1962. Empfehlungen Fur die Durchfuhrung von Strahlungsmessungen an und in Gewaswsern. Mitt. Int. Ver. Limnol., 11：77.
Schlthorpe, D.C., 1967. Biology of aquatic vascular plant. Edward Amold, London.
Small, M. and F. J. Hickey, 1997. Levels and patterns of genetic variation in Isoetes Karstenii with observations on I. Palmeri. American Fern Journal 87：104-115.
Soltis, D. E., C. H. Haufler, D. C. Darrow and G. J. Gastony, 1983. Starch gel electrophoresis of ferns：a compilation of grinding buffers, gel and electrode buffers, and staining schedules. Am. Fern. J. 73：9-27.
Soltis, D.E., C. H. Haufler and G. J. Gastony, 1980. Detecting enzyme variation in the fern genus Bommeria: an analysis of methodology. Syst. Bot. 5：30-38.
Soltis, P. S. and D. E. Soltis. 1989. Genetic variation and population structure in the fern Blechnum spicant (Blechnaceae) from western north America. Am. J. Bot. 75：37-44.
Srivastava, G. K., D. D. Pant and P. K. Shukla, 1993. The genus Isoetes L. in India. Am. Fern J. 83：105-119.
Szmeja, J., 1994. An individual’s status in populations of isoetid species. Aquat. Bot. 48(3-4)：203-224.
Taylor, W. C. and R. J. Hickey, 1992. Habitat, evolution, and speciation in Isoetes. Ann. Missouri Bot. Gard. 79: 613-622.
Triest, L., 1991. Enzyme polymorphism and its relationships to biological features in aquatic plants. In: L. Triest (Editor), isozymes in water plants. Opera Bot. Bleg. 4:201-240.
Tryon, R. M. and A. F. Tryon, 1982. Ferns and allied plants. New York：Springer-Verlag.
Werth, C. R., A. A. Karlin and S. I. Guttman, 1982. Enzyme extraction from phenolic-contain plant tissues using caffeine. Isozyme Bull. 15：139.
Wetzel, R. G., 1975. Limnology. London W. B. Saunders company.
Wojtan, K. and J. Galas, 1994. Acidification of small mountain lakes in the High Tatra Mountains, Poland. In J. Fott(ed.) Limnology of Mountain Lakes. 179-182.
Wojtan, K., 1989. Acid rains in the High Tatra Mts in relation to lakes acidification. In S. Wrobel(ed.), On Pollution of the atmosphere in relation to the water degradation, Krakow, Poland：69-75.
Workman, P. L. and J. D. Niswander, 1970. Population studies on southwestern Indian tribes. II Local genetic differentiation in the Papago. Am. J. Human. Gen. 22：24-29.
Wright, S., 1965. The interpretation of population structure by F-statistics with special regard to systems of mating. Evolution 19：395-420.
Wright, S., 1978. Evolution and the genetics of populations. Vol. 4. Variability within and among natural populations. Univ. of Chicago Press, Chicago, IL.
Yang, T. Y., S. H. Tsai and C. E. DeVol, 1975. Vascular elements in the corm of Isoetes taiwanensis. Taiwania. 20(1)：99-106.
交通部中央氣象局，鞍部氣象測候站、竹子湖氣象測候站。http://www.cwb.gov.tw/V3.0/index.htm。