戴昌鳳臺灣大學:海洋研究所童亞瑄Ya-Hsuan, TungTungYa-Hsuan2007-11-272018-06-282007-11-272018-06-282004http://ntur.lib.ntu.edu.tw//handle/246246/56584本論文比較不同溫度對萼柱珊瑚(Stylophora pistillata)和尖枝列孔珊瑚(Seriatopora hystrix)生長率及死亡率的影響。兩種珊瑚分別採集自台灣南部南灣的後壁湖與核三廠出水口海域,製作成珊瑚小分枝,飼養在水溫分別為28、25和20℃的中型生態箱(mesocosm),每個溫度處理皆有2個生態箱,每隔三個星期以浮力測重法測量珊瑚的骨骼重量,做為生長率之指標。結果發現,萼柱珊瑚和尖枝列孔珊瑚群體的平均生長率在25℃(萼柱珊瑚:0.0126±0.0045 g/g*day; 尖枝列孔珊瑚:0.0253±0.0081 g/g*day)皆顯著地高於28℃ (萼柱珊瑚:0.0066±0.0027 g/g*day; 尖枝列孔珊瑚:0.0083±0.0046 g/g*day)和20℃(萼柱珊瑚:0.0058±0.0014 g/g*day; 尖枝列孔珊瑚:0.0047±0.0022 g/g*day),顯示25℃較適合這兩種珊瑚的生長。在25℃的2個生態箱之間,尖枝列孔珊瑚的平均生長率相似,並且大部份都顯著高於萼柱珊瑚,而萼柱珊瑚的平均生長率則顯著不同;然而,在28℃的2個生態箱之間,尖枝列孔珊瑚的平均生長率變異較大,與萼柱珊瑚的平均生長率比較並無一致的趨勢;在20℃的2個生態箱之間,萼柱珊瑚的平均生長率相似,尖枝列孔珊瑚卻有顯著不同。這些結果顯示,兩種珊瑚在不同溫度下的生長反應有所差異,在適溫環境下,尖枝列孔珊瑚的生長穩定且高於萼柱珊瑚,但萼柱珊瑚卻會受到其他因素(如:生態箱效應)影響;在較高和較低溫時,萼柱珊瑚生長沒有受到生態箱效應影響,而溫度對於尖枝列孔珊瑚生長率的影響可能受到生態箱效應而改變。萼柱珊瑚在不同溫度下的死亡率皆很低,而尖枝列孔珊瑚在28℃處理組的部份死亡率(37.5 %)顯著高於25℃(2.1 %)和20℃(2.1 %)組,顯示其對高溫較敏感且易受影響。The purpose of this study is to compare the effects of sea temperature on growth rate and mortality of reef corals, Stylophora pistillata and Seriatopora hystrix. Coral colonies were collected from Nanwan Bay, southern Taiwan. Coral branches were prepared and cultured in mesocosms at three temperature regimes (28, 25 and 20℃, each 2 replicates). The growth of corals was measured at three-week intervals by a buoyant weighting technique. The mean growth rates of S. pistillata and S. hystrix at 25℃(S. pistillata: 0.0126±0.0045 g/g*day; S. hystrix: 0.0253±0.0081 g/g*day) were significantly higher than those at 28℃(S. pistillata: 0.0066±0.0027 g/g*day; S. hystrix: 0.0083±0.0046 g/g*day) and 20℃(S. pistillata: 0.0058±0.0014 g/g*day; S. hystrix: 0.0047±0.0022 g/g*day).The mean growth rates of S. hystrix in two mesocosms at 25℃ were similar and significantly higher than those of S. pistillata. However, the mean growth rates of S. pistillata in two mesocosms at 25℃ were significantly different. The mean growth rates of S. hystrix in two mesocosms at 28℃ were significantly different and did not show a consistant relationship compared to those of S. pistillata. The mean growth rates of S. hystrix in two mesocosms at 20℃ were significantly different, but those of S. pistillata were the same. This suggests that the effects of temperature on growth of the two coral species were different. Growth rates of S. hystrix at 25℃ were stable and higher than those of S. pistillata. However, the effects of temperature on growth rate of S. hystrix may be modified by other factors (e.g., mesocosm effect) in higher or lower temperatures. The mortality of S. pistillata in three temperature treatments was very low, while the partial mortality of S. hystrix at 28℃ (37.5 %) was significantly higher than that at 25 (2.1 %) and 20℃ (2.1 %). This suggests that S. hystrix is more sensitive and vulnerable to high sea temperatures.目錄…………………………………………………………………..…..I 中文摘要……………………………………………………….………..II 英文摘要………………………………………………….…………….III 表目錄………………………………...…………………….………….IV 圖目錄……………………………………………………..…………….V 前言………………………………………………………………………1材料與方法…….…………….……………………………………….….4 結果…………………………………………………………………..…..7 討論…………………………………………………………….…….…11 結論…………………………………………………………….………13 參考文獻………………………………………………………………..14 表目錄 表1:萼柱珊瑚在6個生態箱中小珊瑚重量之One-way ANOVA結果…………………………………………………………...…….17 表2:溫度與生態箱對萼柱珊瑚生長率影響之two factor nested-ANOVA結果………………………...…………………………………….18 表3:尖枝列孔珊瑚在6個生態箱中的小珊瑚重量之One-way ANOVA結果………………………………………………………………19 表4:溫度與生態箱對尖枝列孔珊瑚生長率影響之two factor nested-ANOVA結果……….…………………………………....20 表5:不同溫度下,萼柱珊瑚和尖枝列孔珊瑚在不同生態箱之間生長率之two-way ANOVA結果…………………………………….21 表6:不同溫度下,萼柱珊瑚和尖枝列孔珊瑚部份死亡率之Chi-square test結果…………………………………………………………..22 圖目錄 圖1:從2003年10月6日(Ti)至2004年1月26日(T0 + 71 d),6個生態箱的水溫連續監測資料…………..……………………... …..23 圖2:從2003年10月10日(Ti) 至2003年12月17日(T0 + 71 d),6個生態箱的營養鹽濃度資料……...………………………..….. 24 圖3:萼柱珊瑚在進行溫度實驗前,不同時期之骨骼重量.……....... 25 圖4:萼柱珊瑚在溫度實驗期間,不同時期的生長率………. ………26 圖5:尖枝列孔珊瑚在進行溫度實驗前,不同時期之骨骼重量……...27 圖6:尖枝列孔珊瑚在溫度實驗期間,不同時期的生長率…………....28 圖7:萼柱珊瑚和尖枝列孔珊瑚在28℃不同生態箱與時期的生長率………………………..………………………………………..29 圖8:萼柱珊瑚和尖枝列孔珊瑚在25℃不同生態箱與時期的生長率………………..………………………………………………..30 圖9:萼柱珊瑚和尖枝列孔珊瑚在20℃不同生態箱與時期的生長率………………………..………………………………………..31 圖10:尖枝列孔珊瑚在不同溫度、生態箱與時期的部分死亡 率………………..………………………………………………..32228333 bytesapplication/pdfen-US存活率溫度中型生態箱生長率尖枝列孔珊瑚萼柱珊瑚growth rateSeriatopora hystrixsurvival ratemesocosmtemperatureStylophora pistillata溫度對萼柱珊瑚(Stylophora pistillata)和尖枝列孔珊瑚(Seriatopora hystrix)生長與存活影響的比較: 中型生態箱研究Temperature effects on the growth and survival of reef corals Stylophora pistillata and Seriatopora hystrix: A mesocosm studythesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/56584/1/ntu-93-R91241219-1.pdf