FUNGI, LEAVES, AND THE THEORY OF ISLAND BIOGEOGRAPHY
FUNGI, LEAVES, AND THE THEORY OF ISLAND BIOGEOGRAPHY
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DOI：
10.1007/bf02012947
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发表时间：
1987-01-01
影响因子：
3.6
通讯作者：
NORDHEIM, EV
中科院分区：
文献类型：
--
作者：
ANDREWS, JH;KINKEL, LL;NORDHEIM, EV
在岛屿地理学理论框架内，通过跟踪苹果叶片“岛屿”随时间的“迁移”和“消亡”模式，研究了苹果叶片上真菌（丝状真菌和酵母）的物种动态。两种真菌普查在整个两个季节收集的未经处理的叶子;丝状真菌只进行了监测，另外几个星期在一个赛季的新创建的，无菌的，模型（幼苗）引入到果园的岛屿，并在表面消毒，预先存在的叶子。分析的基础上的自然和表面消毒系统表明，在物种数量达到平衡和营业额的物种组成。移民和灭绝事件与每个岛屿上的物种数量密切相关。移民和灭绝之间的平衡意味着物种数量的叶子和“真实的”（海洋）岛屿是由一个共同的机制，并强调需要把叶微生物群落的动态。
Species dynamics of fungi (filamentous fungi and yeasts) on apple leaves were studied within the framework of the theory of island biogeography by following "immigration" and "extinction" patterns on individual apple leaf "islands" over time. Two fungi were censused on unmanipulated leaves collected throughout two seasons; filamentous fungi only were monitored additionally for several weeks in one season on newly created, axenic, model (seedling) islands introduced to the orchard, and on surface-sterilized, preexisting leaves. Analyses based on both the natural and the surface-sterilized systems showed that an equilibrium in species number was reached and turnover in species composition in both. Immigration and extinction events were strongly related to number of species present on each island. The balance between immigration and extinction implies that species number on leaves and "real" (oceanic) islands is determined by a common mechanism, and emphasizes the need to regard leaf microbial communities as dynamic.