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Distribution of plant mycorrhizal traits along an elevational gradient does not fully mirror the latitudinal gradient
Mycorrhiza ( IF 3.9 ) Pub Date : 2021-01-21 , DOI: 10.1007/s00572-020-01012-3
C. Guillermo Bueno , M. Gerz , M. Moora , D. Leon , D. Gomez-Garcia , D. García de Leon , X. Font , Saleh Al-Quraishy , Wael N. Hozzein , M. Zobel

The influence of mycorrhizal symbiosis on ecosystem processes depends on the mycorrhizal type and status of plants. Early research hypothesized that the proportion of arbuscular mycorrhizal (AM) species decreases and of ectomycorrhizal (ECM) and ericoid mycorrhizal (ERM) species increases along increasing elevations and latitudes. However, there is very scarce information about this pattern along elevation gradients. We aimed to test this hypothesis and to describe the trends in plant mycorrhizal status by examining the Pyrenean mountain range (from 400 to 3400 m asl). The distribution of plant mycorrhizal types: AM, ECM, ERM, and non-mycorrhizal (NM) and status (obligately, OM, or facultatively, FM mycorrhizal plants, FM) were identified based on the Pyrenean Floristic Atlas and analyzed for climatic and edaphic drivers. The proportion of AM plants decreased slightly with elevation, while ECM species peaked at 1000 m asl. The proportion of ERM and NM plant species rose with increasing elevation. The proportion of FM species increased, and OM species decreased with increasing elevation. The change of AM and ECM species, and OM and FM species, along the elevational gradient, corresponds broadly to changes along the latitudinal gradient, driven by a combination of climatic and edaphic factors. Differently, the elevational occurrence of NM plant species is mainly driven only by climatic factors (low temperature) and that of ERM species by only edaphic factors (low pH). Large-scale macroecological studies (≥ 50 km grid cell) well reflect the effects of climate on the distribution of plant mycorrhizal traits, but local data (≤ 1 km grid cell) are needed to understand the effects of soil conditions and land use.



中文翻译:

沿海拔梯度的植物菌根特性分布不完全反映纬度梯度

菌根共生对生态系统过程的影响取决于菌根的类型和植物的状态。早期的研究假设,随着海拔和纬度的增加,丛枝菌根(AM)种类的比例降低,而外生菌根(ECM)和类胡萝卜素菌根(ERM)种类的比例增加。但是,沿着海拔梯度,关于此模式的信息非常少。我们旨在检验这一假设,并通过检查比利牛斯山脉山脉(从300至3400 m asl)来描述植物菌根状况的趋势。根据比利牛斯山脉植物学地图集确定了植物菌根类型的分布:AM,ECM,ERM和非菌根(NM)以及状态(主要是OM,也可能是FM菌根植物FM),并进行了气候和水质分析司机。AM植物的比例随海拔升高而略有下降,而ECM物种在1000 m asl时达到峰值。ERM和NM植物种类的比例随着海拔的升高而增加。FM物种的比例随着海拔的升高而增加,而OM物种的比例则降低。沿海拔梯度,AM和ECM物种以及OM和FM物种的变化大致对应于由气候和水文因素共同驱动的纬度梯度变化。不同的是,NM植物物种的高海拔发生主要是由气候因素(低温)驱动,而ERM物种的高海拔发生仅由土壤因子(低pH)驱动。大规模的宏观生态研究(≥50 km网格)充分反映了气候对植物菌根特征分布的影响,

更新日期:2021-01-21
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