碩士 / 國立成功大學 / 環境工程學系碩博士班 / 96 / Filamentous algae can be found in headwater of water reservoirs in central-south region of Taiwan. These algae are highly abundant, especially Cladophora sp. and Spirogyra spp. Because of they grow well in low nutrient rivers and can be harvested, they are potential for uptaking nitrogen and phosphorus nutrient from rivers. In this study, four rivers were chosen from upstream of Nan-Hua Reservoir and Tseng-Wen Reservoir for the study of the biomass, growth curve, growth rate, nitrogen and phosphorous content, and nutrient uptake rates of the algae in different seasons to evaluate how to harvest. Filamentous algae grow in non-rainy season of each year, from September to next April. There are much more algae in Tseng-Wen Reservoir watershed than in Nan-Hua Reservoir. The growth rate of algae in Tseng-Wen River is 0.60g dry wt/m2/d. The annual nutrient uptake rates in Tseng-Wen River are 0.77~3.10 g N/m2/y and 0.02~0.07 g P/m2/y, respectively. Nitrogen and phosphorous content in Cladophora is higher than Spirogyra in Tseng-Wen Reservoir watershed. Phosphorous content in Spirogyra algae in Tseng-Wen Reservoir watershed is higher than in Nan-Hua Reservoir. Basing on this study, Tseng-Wen River and Toyachiyi River are suggested as the best sites to harvest. The average potential nutrient ingestion from Tseng-Wen River are 41.8 kg TN/y and 1.0 kg TP/y, respectively. The average potential nutrient ingestion from Toyachiyi River are 27.2 kg TN/y and 2.2 kg TP/y, respectively.
| Identifer | oai:union.ndltd.org:TW/096NCKU5515003 |
| Date | January 2008 |
| Creators | Li-shiuan Chen, 陳俐璇 |
| Contributors | Ching-gung Wen, 溫清光 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 99 |
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