中文摘要

本研究主要在探討2003年2月至2004年8月期間台灣四周海
域浮游翼足類種類組成以及數量之時空變化，並嘗試瞭解水文因子
對其分布的影響。採樣結果共發現浮游翼足類4科11屬26種，平均
豐度為75.87±11.39 inds/100m³，並有明顯的季節差異，以夏季
最高，春季次之，冬季最少。台灣海峽中浮游翼足類的豐度明顯大
於其他的海域。前6個主要優勢種依序為胖螔螺(Limacina inflata)、尖筆帽螺(Creseis acicula)、棒筆帽螺(Creseis clava)、芽筆帽螺(Creseis virgula)、泡螔螺(Limacina bulimoides)以及錐筆帽螺(Creseisvirgula var. conica)，
其豐度總和佔總豐度的88％。不同季節及不同水文環境，優勢種類相似，但優勢度排序並不一致，不同優勢種有不同的季節高峰。
台灣四周海域浮游翼足類的種類數在季節間沒有明顯差異，冬季有21種，春季及夏季有22種。位於台灣東部海域測站的種類數較高。夏季中的浮游翼足類種歧異度指數顯著高於春季及冬季。
台灣四周海域浮游翼足類的總豐度、種類數及種歧異度指數皆與
表層海水溫度有顯著的正相關，三者之中只有種類數與鹽度呈現顯
著的正相關性。6個主要優勢種的豐度與表層海水之溫度、鹽度相關
性各有不同；棒筆帽螺(Creseis clava)和芽筆帽螺(Creseis virgule)與溫度呈現顯著正相關，而泡螔螺(Limacina bulimoides)與溫度呈現顯著負相關； 胖螔螺(Limacina inflata)和泡螔螺(Limacina bulimoides)與鹽度有顯著的正相關性，棒筆帽螺(Creseis clava)和鹽度則呈現顯著負相關。

Abstract

The spatial and temporal changes in species composition and
abundance of pteropods in relation to hydrography in the waters around
Taiwan were investigated during the period from February 2003 to
August 2004. In total, 26 species of pteropods belonging to 11 genera and
4 families were identified, with mean abundance of 75.87±11.39
inds/100m³, The abundance of pteropods exhibited noticeable seasonal
changes, higher in summer and lower in winter. Higher abundance were
always found in Taiwan Strait in our study area. The six most dominant
species were Limacina inflata, Creseis acicula, C. clava, C. virgula,
L. bulimoides and C. virgula var. conica in descending order. These
species totally accounted for more than 88％ of the total pteropods. The
composition of dominant species were similar among different seasons and hydrographic areas, but the order of dominance was different.
Different dominant species showed different seasonal distribution
patterns.
The species number of pteropods in the waters around Taiwan
showed no difference among seasons. There were 21 species found in
winter, 22 species in spring and summer. The species number was higher
in the waters of eastern Taiwan. The diversity index of pteropods in
summer was significantly higher than that in spring and winter.
The total abundance, species number, and diversity index of
pteropods were significantly positively correlated to water temperature;
only the species number was significantly positively correlated to salinity.
The abundance of the six most dominant species showed different
correlations with water temperature and salinity. The abundance of
Creseis clava and C. virgula were significantly positively correlated with
water temperature, but Limacina. bulimoides was negatively correlated.
The abundance of L. inflata and L. bulimoides displayed significant
positive correlation with salinity, but C. clava displayed negative
correlation.

目錄
章次 頁數
中文摘要--------------------------------------------------I
英文摘要-------------------------------------------------II
目錄-----------------------------------------------------IV
表目錄--------------------------------------------------VI
圖目錄-------------------------------------------------VIII
附錄目錄-------------------------------------------------X
壹、前言--------------------------------------------------1
1.1 浮游翼足類的生理-------------------------------------1
1.2 相關文獻回顧-----------------------------------------3
貳、材料與方法--------------------------------------------8
2.1 採樣時間、地點與方法---------------------------------8
2.2 樣品處理和分析---------------------------------------8
2.3 資料處理和分析---------------------------------------9
參、結果-------------------------------------------------12
3.1 水文環境--------------------------------------------12
3.2 種類組成及季節變化----------------------------------13
3.3 優勢種於季節及不同水團的變化------------------------16
3.4 浮游翼足類之群聚分析--------------------------------22
3.5 翼足類種類組成及優勢種與水文因子之相關性-------------26
肆、討論-------------------------------------------------28
4.1 水文環境因子的探討----------------------------------28
4.2 種類組成及分布特徵----------------------------------30
4.3 優勢種的比較及季節變化------------------------------35
4.4 優勢種與水文環境因子的探討--------------------------37
伍、結論-------------------------------------------------40
陸、參考文獻---------------------------------------------42
附表-----------------------------------------------------48
附圖-----------------------------------------------------64
附錄-----------------------------------------------------92

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