Microbial dynamics on decaying leaves in a temporary Moroccan river. I - Fungi
Microbial dynamics on decaying leaves in a temporary Moroccan river. I - Fungi
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摩洛哥临时河流中腐烂树叶的微生物动态。
DOI：
10.1127/archiv-hydrobiol/144/1998/41
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
E. Pattee
中科院分区：
文献类型：
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作者：
A. Maamri;É. Chauvet;H. Chergui;F. Gourbière;E. Pattee
在一条温暖的临时河流中研究了暴露在空气中和浸没的叶子上的真菌生物量和组合、水中的孢子形成和特定丰富度以及叶子中的纤维素分解活性的每月变化。陆生真菌在干燥空气中的生物量相对较低，纤维素分解活性也较低。在淹没过程中，水生丝菌的生物量和活性更大。春季水流流动且分解速度快，真菌最活跃。观察到两次完全排除一种真菌物种（推测是通过竞争）。从六月开始，虽然真菌生物量仍然很高，但真菌多样性和活性下降，进一步腐烂可能是由于其他微生物造成的。除了序列的开始是水生阶段的开始而不是落叶的落叶之外，与温带永久河流中的相同过程没有显着差异。
Monthly variations of fungal biomass and assemblages on leaves exposed to the air and submerged, of sporulation and specific richness in the water, and of cel- lulolytic activity in the leaves were investigated in a warm temporary river. The bio- mass of terrestrial fungi was relatively low in the dry air and cellulolytic activity also was low . During submersion, biomass and activity of the aquatic hyphomycetes were greater. The fungi were most active in spring when the water was flowing and when breakdown was fast. Complete exclusion of one fungal species on one leaf species, presumably by competition, was observed twice. From June onwards, though fungal biomass remained high, fungal diversity and activity decreased, and further decay was presumably due to other microorganisms. No major difference to the same processes in temperate permanent streams appeared except that initiation of the sequence was the onset of the aquatic phase and not deciduous leaf fall.