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題 名 | Rarefaction Diversity:a Case Study of Polychaete Communities Using an Amended FORTRAN Program=歧異度:修正之稀釋法FORTRAN程式應用於多毛類群聚 |
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作 者 | 謝蕙蓮; 李隆安; | 書刊名 | 動物研究學刊 |
卷 期 | 37:1 1998.01[民87.01] |
頁 次 | 頁13-21 |
分類號 | 386.695 |
關鍵詞 | 種歧異度; 稀釋法電腦程式; 底棲群聚; Species diversity; Rarefaction program; Benthic communities; |
語 文 | 英文(English) |
中文摘要 | 本研究以多毛類群聚為實例,分析稀釋歧異度的意義與優點。報告了修訂Simberloff 氏所寫FORTRAN稀釋曲線程式,並用此新修程式比較多毛類群聚之種歧異度。經重新展 開稀釋曲線數學式後,發現Simbrloff氏之程式可簡化。簡化後之程式在計算期望種數與其 變方時,所需電腦記憶空間大幅縮減,但效率卻大為提升。本論文的程式,經FORTRAN 語言編譯器轉換成執行檔後,可以放在沒有FORTRAN語言的個人電腦上執行,對田野生 態工作提供便利及助益。以棲息於臺南縣曾文溪沿岸亞潮帶地區之多毛類群聚為實例,比較 南北兩區多毛類之種歧異度。採樣時間為1994年9月以及1995年4月。在北區總計採得56 種多毛類,724個個體;在南區,則計採得29種,378個個體。當兩區個體數以稀釋法量化 到相同個體數時,北區之期望種數多於南區。同時,北區的稀釋曲線斜率較南區的來得陡, 顯示北區的多毛類個體數量在種間的相對分布較南區來得平均。另外,本研究也計算出傳統 所用之種歧異度指數(H')與均勻度指數(J'),以供稀釋曲線法比較之用。 |
英文摘要 | Hwey-Lian Hsieh and Lung-An Li (1998) Rarefaction Diversity: a case study of polychaete communities using an amended FORTRAN program. Zoological Studies 37 (1): 13-21. This study presents an amended Simberloff rarefaction FORTRAN program and a case study comparing the species diversities of polychaete communities using this new program. A reexamination of the rarefaction formula revealed that the Simberloff program could be simplified. The modified program requires substantially less computer memory, and concomitantly, gains greater efficiency in calculating the expected numbers of species and their variances. For the case study, the polychaete communities in 2 regions (north and south) located in the subtidal areas off the coast of Tainan County in southwestern Taiwan were examined in September 1994 and in April 1995. A total of 724 indviduals of 56 polychaete species were collected from the north region and 378 individuals of 29 species were collected from the south region. The rarefaction curves of the 2 regions were well separated. The number of species expected in the north region was greater than in the south region when the abundances of the 2 regions were rarefied to the same numbers of individuals. The rarefaction curve was steeper in the north region than in the south region, indication a more even distribution of polychaete individuals among species in the north than in the south. In addition, the rarefaction diversity and conventional Shannon diversity and evenness index were also compared to show the significant and informative strength of the employed rarefaction method. |
本系統中英文摘要資訊取自各篇刊載內容。