陽明山地區網柱細胞黏菌之生態多樣性研究

Studies of ecological biodiversity of dictyostelid cellular slime molds in Yangmingshan area

許素玲(Hsu Su-Ling)

指導教授 ： 葉增勇

國立臺灣師範大學/理學院/生物學系在職進修碩士班/碩士(2002年)

摘要

本研究於陽明山國家公園地區選取3種不同植被環境，設立30個1平方公尺的樣區，其中20個樣區位於鹿角坑生態保護區闊葉林植被；5個樣區位於小油坑附近之芒草植被；另5個樣區位於包籜箭竹林植被。自民國89年10月至90年8月止，每2個月實施採集表層土壤樣品一次。分離出網柱細胞黏菌純培養菌株，並經鑑定後共得1科2屬6種，分別為布列菲氏網柱細胞黏菌(Dictyostelium brefeldianum Hagiwara)、纖細網柱細胞黏菌(D. delicatum Hagiwara)、紫色網柱細胞黏菌(D. pupureum Olive)、根足網柱細胞黏菌(D. rhizopodium Raper et Fennel)、透明輪生細胞黏菌(Polysphondylium pallidum Olive)和紫色輪生細胞黏菌(P. violaceum Brefeld)。其中鹿角坑闊葉林植被分離出上述6個菌種，在3種植被樣區中佔最多數，並且以8月份各菌種之出現頻率最高。網柱細胞黏菌在本地區出現頻率一般隨季節變換而有差異，夏季出現頻率較高，冬季出現頻率較低。土壤樣品之酸鹼值亦影響網柱細胞黏菌在本地區之分布，其中包籜箭竹植被之土壤樣品pH值最低為3.8，該植被區之菌種出現頻率最低。透明輪生細胞黏菌普遍存在於3種植被樣區中，出現頻率隨季節之變化小，為本地區最廣泛分布之種類。

關鍵字

細胞黏菌 ； 生態多樣性 ； 陽明山 ； 網柱細胞黏菌 ； 輪生細胞黏菌 ； 植被

並列摘要

Thirty sampling plots with 1 square meter were set in Yangmingshan National Park, Taiwan which included (1) twenty at Luchiukeng broad-leaved forest Nature Reserve, (2) five at Hsiaoyukeng Silvergrass vegetation, and (3) five at Usawa cane vegetation. Soil samples were collected every two months from October 2000 to August 2001. Some isolates of dictyostelid cellular slime molds (dCSMs) were obtained. They were identified as six species, two genera and one family, namely：Dictyostelium brefeldianum Hagiwara, D. delicatum Hagiwara, D. pupureum Olive, D. rhizopodium Raper et Fennell, Polysphondylium pallidum Olive, and P. violaceum Brefeld. Luchiukeng broad-leaved forest had all the six species of dCSMs and was more than the other two vegetation. The slime molds in this forest occurred most frequently on August. The occurrence frequency of dCSMs varied in different seasons-- higher in summer and lower in winter. The distribution of dCSMs in this area was also influenced by the pH value of soils. The lowest pH was 3.8 in Usawa cane vegetation which had lower occurrence frequency of dCSMs. P. pallidum Olive was the most common dCSM in the three vegetation and less variation in seasons.

並列關鍵字

dictyostelid cellular slime molds ； ecological biodiversity ； Yangmingshan ； Dictyostelium ； Polysphondylium ； vegetation

參考文獻

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