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首页> 外文期刊>Mycologia >Vertical distribution and assemblages of corticolous myxomycetes on five tree species in the Great Smoky Mountains National Park
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Vertical distribution and assemblages of corticolous myxomycetes on five tree species in the Great Smoky Mountains National Park

机译：大烟山国家公园5种树种上的皮质粘菌菌的垂直分布和组合

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摘要

Corticolous myxomycetes of the Great Smoky Mountains National Park were studied in relation to their association with certain tree species and height of occurrence in the forest canopy. Using the double-rope climbing method, bark was collected at 3 in increments to the tops of trees of five different species. Bark samples from 25 trees were used to prepare 418 moist chamber cultures maintained and observed 4 wk. Eighty-four myxomycete species were identified, including 30 species not known to occur in the park. Tree species, pH, height in tree and water-holding capacity of the bark samples were analyzed to determine the relationships of myxomycete assemblages cultured on the bark. Results suggested that myxomycete community composition among selected tree species were similar, but occurrence and abundance of certain species were related to differences in bark pH. Community similarity values among trees of different species show that trees with the most similar myxomycete communities also have the most similar bark pH. Most myxomycete species in this study have a pH optimum. No, variation in species richness was detected at different heights in the trees, and most species were obtained at all heights up to at least 24 in. The water-holding capacity of the bark could not be correlated with species richness or abundance of myxomycetes that inhabit the bark of living trees. This is the first study to characterize myxomycete communities of tree canopies.
机译：研究了大烟山国家公园的皮质黏菌菌与某些树种的关联以及在林冠层中的发生高度。使用双绳攀爬方法，以3的增量将树皮收集到5种不同树种的树顶。使用来自25棵树的树皮样品来制备418湿室培养物，保持并观察到4周。已鉴定出八十四种粘菌种，其中包括30种在公园内未知的物种。分析树的种类，pH，树的高度和树皮样品的持水能力，以确定在树皮上培养的粘菌体组合的关系。结果表明，选定树种中的粘菌菌群落组成相似，但某些树种的发生和丰度与树皮pH值的差异有关。不同物种的树木之间的群落相似性值表明，粘菌菌群落最相似的树木的树皮pH也最相似。在这项研究中，大多数粘菌种具有最适pH。不，在树木的不同高度上都检测到物种丰富度的变化，并且大多数物种都在至少24 in的所有高度上获得。栖息在活树的树皮上。这是第一个表征树木冠层粘菌群落的研究。

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