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首页> 外文期刊>International Journal of Biometeorology >Parietaria judaica flowering phenology, pollen production, viability and atmospheric circulation, and expansive ability in the urban environment: impacts of environmental factors
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Parietaria judaica flowering phenology, pollen production, viability and atmospheric circulation, and expansive ability in the urban environment: impacts of environmental factors

机译：Parietaria judaica开花物候，花粉产量，生存能力和大气环流以及城市环境中的扩张能力：环境因素的影响

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Parietaria judaica (Urticaceae) grows abundantly in urban areas of the Mediterranean region. Its pollen is a major allergy source. We studied the species’ distribution and abundance in and around Thessaloniki (Greece), pollen production and pollen season. We also examined how urban pollution affects pollen viability. Our ultimate goal was to obtain an estimate of the species’ performance and ability to expand under different environmental conditions related to climate change. We mapped P. judaica and the other Urticaceae species. In a north- and a south-facing population, we recorded the progress of P. judaica flowering and estimated the pollen content per flower, shoot and surface unit. We concurrently assessed atmospheric circulation of Urticaceae pollen. We estimated P. judaica pollen viability and Cu, Pb and Zn concentrations in plants collected from sites differing in traffic intensity. P. judaica is the most abundant Urticaceae species in the area; its occurrence has increased dramatically over the last 100 years. Production of flowers is intense in spring and autumn. Flowering started 12 days earlier in the south-facing population in spring, and 3 days later in autumn. Pollen production was higher in spring and in the south-facing population. Flower and pollen production were positively correlated with the size of the plant and the flower, respectively. Copper and lead concentrations in plants were positively correlated with pollen viability, which was higher for plants collected from high-traffic sites. P. judaica has a high phenotypic plasticity; this is a feature that promotes success of expansive and invasive species. It is also well adapted to warm and polluted urban environments. The climatic change forecast for the Mediterranean region could provoke earlier, longer, and more pronounced flowering and, consequently, more P. judaica pollen in the air. In return, this would result in increased severity of Parietaria pollinosis.
机译：Parietaria judaica（荨麻科）在地中海地区的城市地区大量生长。其花粉是主要的过敏源。我们研究了塞萨洛尼基（希腊）及其附近，花粉产量和花粉季节的物种分布和丰度。我们还研究了城市污染如何影响花粉生存能力。我们的最终目标是获得该物种在与气候变化有关的不同环境条件下的性能和扩展能力的估计。我们绘制了P. judaica和其他荨麻科物种的图。在朝北和朝南的种群中，我们记录了P. judaica开花的进程，并估计了每朵花，枝条和表层单位的花粉含量。我们同时评估了荨麻科花粉的大气环流。我们估算了从交通强度不同的地点收集的植物中的犹太假单胞菌花粉生存力以及铜，铅和锌的浓度。 P. judaica是该地区最丰富的荨麻科物种。在过去的100年中，其发生率急剧上升。在春季和秋季，鲜花的产量很高。春季，朝南的种群提前12天开始开花，而秋季则推迟3天开始开花。春季和朝南种群的花粉产量较高。花和花粉的产量分别与植物和花的大小呈正相关。植物中的铜和铅浓度与花粉生存力呈正相关，从高交通量地点采集的植物中花粉生存力则较高。 P. judaica具有很高的表型可塑性。这是促进膨胀和入侵物种成功的功能。它也非常适合温暖和污染的城市环境。对地中海区域的气候变化预测可能会引起更早，更长和更明显的开花，因此，空气中还会招生更多的朱顶红花粉。作为回报，这将导致严重的腮腺花粉症。

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