本研究於1998年9月起在南灣海域珊瑚礁區，每二個月放置附著板一次，共放置6次；並從1998年11月起至2000年9月止每二個月調查一次，利用人工附著板長期追蹤每一隻珊瑚幼生添入時間、生長的大小以及存活的狀況。其目的要瞭解季節與棲所（如新、舊基質與不同附著位置等）對幼生添入量、生長與存活率的影響。
在二年調查期間，珊瑚幼生添入量非常低，平均每片PVC板（15×15 cm）僅1.3隻珊瑚幼生附著；主要添入種類以孵育型的鹿角珊瑚科幼生為主（50.7%），其次依序為微孔珊瑚科（32%）、變形合星珊瑚（6%）、軟珊瑚Anthelia flava （5%）、軸孔珊瑚（2%）及其它珊瑚（<1%）等所組成。
在放置2個月的新基質上，幼生添入量密度有顯著的季節性變化，但在放置14個月的舊基質上，沒有顯著的季節性變化。以1999年附著的鹿角珊瑚科幼生為例，5月份調查雖具有高附苗密度，但其前二個月存活率與累計存活率皆偏低；同時此月份附苗的尖枝列孔珊瑚，生長亦較其它月份緩慢。
新基質上新添入量附苗密度顯著高於舊板；雖然新添入量前二個月的活存率在新、舊基質間沒有顯著關係，但鹿角珊瑚科幼生累計存活率與初期（月齡2~6個月大）最大直徑的增長在新基質上的高於舊基質上。
鹿角與微孔珊瑚科幼生新添入量具有年間變異，鹿角珊瑚科在1999年新添入量密度顯著高於2000年，而微孔珊瑚科幼生則有相反現象。鹿角與微孔珊瑚幼生附苗對新、舊基質有選擇性，鹿角珊瑚在新基質上附苗密度較高，且附苗密度隨基質放置時間增加而下降；但微孔珊瑚與鹿角珊瑚相反，在舊基質上附苗密度較高，且附苗密度隨基質放置時間增加而顯著增加。鹿角珊瑚科幼生具附著密度高，但其存活率有顯著低於其它珊瑚種類；同時，軸孔珊瑚與變形合星珊瑚雖附苗密度低，但卻有高存活率。
新添入附苗密度與幼生最大直徑的增長在PVC板有顯著的邊緣效應，邊緣區有顯著高於間隔與中央區，但新添入量前2個月的存活率與累計存活率，在此三區間並無顯著關係，因此附苗的邊緣效應，可能不是幼生主動喜好選擇的結果。
9種石珊瑚幼生中，以軸孔珊瑚幼生的成長率最快（最大直徑增加率1.8 mm/月）。而三種鹿角珊瑚科幼生中，尖枝列孔珊瑚幼生平均最大直徑，在月齡2至12個月各月齡期，都有顯著小於細枝鹿角珊瑚；同時尖枝列孔珊瑚幼生有部份幼生在一年內幾乎沒有增長。
整體而言，南灣海域珊瑚幼生的存活率非常低，在附苗後第12個月的累計存活率約為29.2%，但至第二年調查結束時的累計存活率，則約為0.7%；而在死亡的幼生中有65.7%的幼生因不明原因而消失，其他則是由於沉積物與藻類或其他生物影響而死亡；而且，鹿角珊瑚科小群體的存活機會顯著低於較大的群體。

The recruitment, growth rate and survival of every juvenile corals on artificial substrates, deployed every 2 months since September 1998, for a total of 6 times, were investigated every 2 months, from November 1998 to September 2000, at Nanwan, southern Taiwan. The influence of season and habitat (e.g., new vs. old substrate and different positions etc.) on the above life history characteristics were the foci of this study.
Coral recruitment during the 2-year period was low, averaging 1.3 recruits per 15x15 cm PVC plate; it was dominated by Pocilloporidae (50.7%) and Poritidae (31.9%), with Stylocoeniella guentheri (6.2%), Anthelia flava (5.1%) and Acropora sp. (2.4%) and others as minor constituents.
Seasonal variations of new recruit densities were significant on new substrates of 2-months old, but not on old substrates of 14-month old. Pocilloporidae, for example, had the highest new recruit densities in May 1999; although the survival rate in this period, cumulative survivorship and growth rate were lower than those settled in other times.
New recruit densities on new substrates were significantly higher than that on old substrates, but the survival rates of new recruits in the first 2 months were not significantly different between new and old substrates. The cumulative suvivorship and the initial juvenile growth rate of Pocilloporidae were higher on new than on old substrates.
New recruit density of Pocilloporidae was higher in 1999 than in 2000, with an opposite pattern found in Poritidae. Juveniles prefer to settle on new substrates higher than old substrates and recruit densities decrease as plate age in Pocilloporidae, but an opposite pattern was found in Poritidae. The Pocilloporidae had relatively higher recruit densities but lower cumulative survivorship than Acropora sp. and Stylocoeniella. guentheri.
A margin effect on the PVC plates was found, with higher new recruit densities and growth rates in the margin than in the intermediate and the inner region. The survival rate and the cumulative survivorship of recruits, however, were similar among the 3 regions on the plates. Thus the pattern of margin effect on the plate is unlikely a result of active larva preference.
Among the scleractinian recruits, Acropora sp. had the highest growth rate, averaging 1.8 mm/month in maximum diameter. Within Pocilloporidae, the maximum diameters of juvenile Seriatopora hystrix was significant smaller than Pocillopora damicornis from 2-12 month. Some recruits of Seriatopora hystrix did not grow for more than a year.
The overall cumulative survivorship of coral recruits was low at Nanwan, with 29.2% surviving the first year, and 0.7% surviving 2 years. Within dead juveniles, 65.7% was caused by disappearance and 34.3% was caused by algae, sediment and others organism etc. The relationship between size and mortality on juvenile Pocilloporidae is significant, implying that larger colony corals have higher survivor chance than smaller colony corals.

目　錄
　　　　　　　　　　　　　　　　　　　　　　　 頁碼
目錄 Ⅰ
中文摘要 Ⅱ
英文摘要 Ⅳ
表目錄 Ⅵ
圖目錄 Ⅶ
前言 1
研究材料與方法 5
結果 10
討論 25
參考文獻 39
表 47
圖 48

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