Influence of bark pH on the occurrence and distribution of tree canopy myxomycete species
Influence of bark pH on the occurrence and distribution of tree canopy myxomycete species
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DOI：
10.3852/mycologia.100.2.191
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发表时间：
2008-03-01
期刊：
影响因子：
2.8
通讯作者：
Ely, Joseph S.
中科院分区：
文献类型：
--
作者：
Everhart, Sydney E.;Keller, Harold W.;Ely, Joseph S.
本研究比较了粘菌物种的发生和分布在树冠的活树和邻近的葡萄。在美国东南部的三个温带森林中的6个树种（30棵树）和葡萄树（30藤），以确定分布和发生的粘菌种有关的地理位置，宿主物种，和树皮pH值。双绳攀爬技术被用来访问树冠和样本树皮唇16.5英寸。在580个湿室培养物中检查了树皮样品，鉴定出44种黏菌，代表21属，平均每个样品点3.0 +/- 2.1种。Jaccard系数决定了糖槭、美洲白蜡、枫香、鹅掌楸、悬铃木和铁杉6个树种5个个体间的群落相似性。canadensis和邻近的葡萄藤Vilis aestivalis和V. vulpina。物种丰富度的垂直变化是显着不同的，只有悬铃木，可能是由于树皮剥落，随着高度的增加，在冠层。加拿大铁杉与相邻葡萄树的群落相似性最大。在所有的树木和葡萄藤品种上都观察到Cri braria violacea。canadensis和邻近的葡萄藤。黏菌的发生和物种组合与树皮pH值，而不是地理位置。夏葡萄皮的pH值为4.5，比相邻的白三叶皮的pH值高。canadensis（pH 4.1），与邻近其他树种的同种葡萄相比。结果表明，大多数物种没有区域限制，虽然有些粘菌与一定的pH值范围，其他发展的任何基质。未来的研究协议，皮栖黏菌应强调采样足够数量的基质在当地地区从不同的宿主物种，有一个广泛的树皮pH值，确保一个代表性的样品的物种为整个地区。
This study compares the occurrence and distribution of myxomycete species in the canopy of living trees and neighboring grapevines. Corticolous myxomycetes of three temperate forests in southeastern USA were studied on six tree species (30 trees) and grapevines (30 vines) to determine distribution and occurrence of myxomycete species relating to geographic location, host species, and bark pH. The double-rope climbing technique was used to access the canopy and sample bark Lip to 16.5 in. Bark samples were examined in 580 moist chamber Cultures and 44 myxomycete species were identified representing 21 genera, averaging 3.0 +/- 2.1 species per sample site. Jaccard's coefficient determined community similarity between five individuals of six tree species, Acer saccharum, Fraxinus americana, Liquidambar styraciflua, Liriodendron tulipifera, Platanus occidentalis and Tsuga. canadensis, and neighboring grapevines, Vilis aestivalis and V. vulpina. Vertical variation in species richness was significantly different only for Platanus occidentalis and might be attributable to flaking of bark with increasing height in the canopy. Tsuga canadensis and neighboring grapevines had greatest community similarity. Cri braria violacea was observed on all tree and grapevine species except T. canadensis and neighboring grapevines. Occurrence and species assemblages of myxomycetes were associated with bark pH, not geographic location. Bark of V. aestivalis (pH 4.5) was more acidic than neighboring T. canadensis (pH 4.1), compared to grapevines of the same species neighboring other tree species. Results indicated that most species are not regionally restricted, and although some myxomycetes are associated with a certain pH range, others develop on any substratum. Future research protocols for corticolous myxomycetes should emphasize sampling adequate amounts of substrata in a local region from different host species that have a wide range of bark pH, ensuring a representative sample of species for an entire region.