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|標題:||Insect diversity analysis of Sun Moon Lake area - on the basis of family level
|關鍵字:||Sun Moon Lake;明潭;Insect diversity;昆蟲多樣性||出版社:||昆蟲學系||摘要:||
This study were investigated from May, 2002 to April, 2003 every month and continued from July, 2003 to October, 2004 every 3 months. All the investigated materials collected by pitfall trap, yellow sticky paper and carrion trap at four sites of the Maolan Hill, the Youth Activity Center, the Songbolun Hiking Trails and the Tsi An Pagoda in Sun Moon Lake tourist area, central Taiwan. Four samples were set at each site for 10 days. The total number of insects collected was 189,608 individuals, which belonged to 239 families in 18 orders. The most dominant order was Diptera which accounted for 62.60% of individuals, and the second dominant order was Collembola which accounted for 17.53% of all individuals. At the family level, there were 59 families in Diptera and 53 families in Coleoptera. The total collected number of insects by pitfall traps was 57482 individuals, and belonged to 194 families in 16 orders. Collembola (55.77%) had highest number of individuals and the next dominant order was Coleoptera (29.32%). The total number of insects collected by yellow sticky papers was 102,726 individuals, and belonged to 192 families in 17 orders. Diptera (84.35%) had highest number of individuals and the next dominant order was Homoptera (6.75%). The total number of insects collected by carrion trap was 29,400 individuals, and belonged to 58 families in 8 orders. Diptera (97.73%) had highest number of individuals and the next dominant order was Coleoptera (2.78%). Four community indices, that is, Family richness index, Simpson's index, Shannon-Wiener's index, and Pielou's evenness index, were calculated based on each collecting methods for different sites. In general, all the four indices in pitfall traps increased in summer and autumn, decreased in winter and spring, and were lowest at the Maolan Hill among all sites. In contrast with the result of pitfall traps, those indices increased in winter and spring, decreased in summer and autumn in yellow sticky papers and carrion traps, and indices were lowest at the Youth Activity Center in yellow sticky papers but at the Maolan Hill in carrion traps. Composition similarity based on individuals in each family among sampling plots were analyzed by percentage similarity analysis. Based on pitfall traps, all the four samplers in each site were grouped together except the Songbolun Hiking Trails, and the Youth Activity Center and the Tsi An Pagoda formed a group. Based on yellow sticky papers, all the four samplers in each site were grouped together, and the Songbolun Hiking Trails and the Tsi An Pagoda formed a group. It lacked consistency between each site by carrion trap. The MDS analysis analyzed composition similarity of abundance among sampler plots: there were significant differences between 4 sites by pitfall trap and by yellow sticky paper. There was significant difference between the Youth Activity Center and the Songbolun Hiking Trails but not for the others by carrion trap. Therefore, pitfall trap is suited to long-term monitoring, and Collembola can be designed as bioindicator, meanwhile, soil conditions and vegetation growth should be considered.
本研究於明潭周遭選定四個採樣站，包括貓囒山、青年活動中心、松柏崙步道以及慈恩塔，自2002年5月起至2003年4月為止，每月調查一次，而後自2003年7月起至2004年10月為止，每季調查一次，以掉落式陷阱杯、黃色黏蟲紙及腐肉陷阱於各採樣站設置4個重複採樣點，10天後收回實驗室進行鑑定，統計並分析昆蟲科數及數量。共計誘得18目239科189608隻，以雙翅目佔62.60%為最多，彈尾目佔17.53%次之，科數方面則以雙翅目59科為最多，鞘翅目53科次之。不同採樣法所誘得之昆蟲組成互有不同。掉落式陷阱共誘得16目194科57482隻，以彈尾目佔55.77%最多，鞘翅目佔29.32%次之。黃色黏蟲紙共計誘得17目192科102726隻，以雙翅目佔84.35%為最多，同翅目佔6.75%次之。腐肉陷阱共計誘得8目58科29400隻，以雙翅目佔97.73%為最多，鞘翅目佔2.78%次之。四種群聚指數分析 (Family richness index、Simpson’s index、Shannon-Wiener’s index及Pielou’s evenness index) 結果顯示，掉落式陷阱杯呈現夏、秋季指數上升，冬、春季指數下降之趨勢，且以貓囒山為最低。黃色黏蟲紙及腐肉陷阱之群聚指數分析結果皆呈現冬、春季指數上升，夏、秋季指數下降之趨勢，其中黃色黏蟲紙之群聚指數以青年活動中心為最低，腐肉陷阱則以貓囒山為最低。將四個採樣站各科昆蟲數量進行百分比相異度分析，掉落式陷阱杯之結果顯示貓囒山、青年活動中心及慈恩塔之各重複取樣點各自歸為一群，可再將青年活動中心及慈恩塔歸為一群。黃色黏蟲紙之結果顯示四站之各重複取樣點各自歸為一群，可再將松柏崙步道及慈恩塔歸為一群。腐肉陷阱之結果顯示各站各重複採樣點之歸群結果並沒有明顯的一致性。各採樣站進行多元尺度分析，掉落式陷阱杯及黃色黏蟲紙皆顯示四站彼此間有顯著差異，然而腐肉陷阱除了青年活動中心與松柏崙步道之間有顯著差異外，其餘各站彼此之間並無顯著差異。日後長期監測可以掉落式陷阱杯為採樣法，彈尾目定為指標生物，並將土壤因子及植被生長一併考慮在內。
|Appears in Collections:||昆蟲學系|
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