Identifying substitute host tree species for epiphytes: The relative importance of tree size and species, bark and site characteristics
Identifying substitute host tree species for epiphytes: The relative importance of tree size and species, bark and site characteristics
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识别附生植物的替代宿主树种：树木大小和物种、树皮和场地特征的相对重要性
DOI：
10.1111/avsc.12569
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发表时间：
2021
影响因子：
2.8
通讯作者：
Mitchell R
中科院分区：
文献类型：
--
作者：
Mitchell R
问题树皮特征是否可用于确定树木是否适合寄生附生苔藓植物和地衣，或者其他树木和场地特征是否更重要？面对因威胁附属附生群落的疾病而造成的流行性树木死亡，需要确定替代宿主。我们评估了七种含磷植物是否适合寄生与英国本土橡树品种，即彼特拉栎和夏栎相关的附生植物，这些植物目前受到一系列害虫和病原体的威胁。位置英国各地的六个植物园和树木园。方法我们记录了地点、栖息地、树木（高度、胸径 [1.3 m；DBH]、树冠覆盖百分比）和树皮特征（pH、电导率、密度、对拟悬铃木、板栗、水青冈、白蜡树、水栎、彼特拉栎、夏栎、红栎和椴树的持水量、硬度、地形）和附生群落组成进行了研究。六个地点总共调查了 230 棵树。结果所有树木之间的比较显示群落组成和树皮特征的相似性之间存在显着相关性。然而，“树木特征”（物种、高度、胸径和树冠）比树皮和场地特征更多地解释了附生群落组成的变化。与本地橡树具有相似附生群落丰富度或组成的磷植物不一定具有相似的树皮特征。非本地橡树和非本地杂种紫椴与本地橡树支持相似的附生植物群落，因此被建议作为替代性担生植物。结论使用树皮性状并不是评估替代性担生植物是否适合保护附生群落的可靠方法。相反，应记录更广泛的含汗植物所寄生的附生植物，以评估它们作为替代寄主的适宜性，从而有助于在树木损失后对替代含汗植物的管理决策。
QuestionsCan bark characteristics be used to determine the suitability of trees to host epiphytic bryophytes and lichens or are other tree and site characteristics more important? Identification of substitute hosts is required in the face of epidemic tree deaths due to diseases that are a threat to affiliated epiphytic communities. We assess the suitability of seven phorophytes to host the epiphytes associated with the UK native oak species,Quercus petraeaandQuercus robur,which are currently threatened by a range of pests and pathogens.LocationSix botanic gardens and arboreta across the UK.MethodWe recorded the site, habitat, tree (height, diameter at breast height [1.3 m; DBH], percentage canopy cover) and bark characteristics (pH, conductivity, density, water‐holding capacity, hardness, topography) and epiphytic community composition onAcer pseudoplatanus,Castanea sativa,Fagus sylvatica,Fraxinus excelsior,Quercus cerris,Quercus petraea, Quercus robur, Quercus rubraandTilia × europaea. In total 230 trees were surveyed across the six sites.ResultsComparisons between all trees showed significant correlations between similarities in community composition and bark characteristics. However, “tree characteristics” (species, height, DBH and canopy over) explained more of the variation in epiphytic community composition than bark and site characteristics. Phorophytes with similar epiphytic community richness or composition to native oaks did not necessarily have similar bark characteristics. Non‐native oaks and the non‐native hybridTilia × europaeasupported similar epiphyte communities to the native oaks and are suggested as substitute phorophytes.ConclusionUsing bark traits is not a reliable method to assess the suitability of substitute phorophytes to conserve epiphytic communities. Instead, the epiphytes hosted by a wider range of phorophytes should be recorded to allow an assessment of their suitability as substitute hosts and hence aid management decisions on replacement phorophytes following tree loss.
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DOI：
10.1007/s00468-020-02035-1
发表时间：
2020-09
期刊：
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影响因子：
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作者：
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DOI：
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发表时间：
2017
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发表时间：
1973
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作者：
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DOI：
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发表时间：
2018
期刊：
Proceedings of the Royal Society B
影响因子：
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作者：
Philipp Resl;F. Fernández;H. Mayrhofer;T. Spribille
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