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首页> 外文期刊>Israel Journal of Plant Sciences >Biodiversity and interslope divergence of vascular plants caused by sharp microclimatic differences at 'Evolution Canyon II', Lower Nahal Keziv, Upper Galilee, Israel
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Biodiversity and interslope divergence of vascular plants caused by sharp microclimatic differences at 'Evolution Canyon II', Lower Nahal Keziv, Upper Galilee, Israel

机译：以色列上加利利下纳哈尔·基齐夫的“进化峡谷II”的微气候差异引起的维管植物生物多样性和坡间差异

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摘要

Species diversity of plants was recorded in 1999-2000 at seven stations of a microsite in Nahal Keziv, western Upper Galilee, designated as "Evolution Canyon II", and compared with that of "Evolution Canyon I", Lower Nahal Oren, Mount Cannel, situated 38 km southwest of Nahal Keziv. Higher solar radiation on the south-facing slope (SFS) causes warm, xeric garrigue and dry Mediterranean "savannoid" plant Formation habitats, versus cool, mesic, dense "south-European" forest on the north-facing slope (NFS). Riverine and segetal plant communities are limited to the valley bottom (VB). In an area of 7000 m(2), we recorded 283 vascular plant species belonging to 200 genera and 56 families. Plant cover varied between 70%-90% (SFS) and 100% (NFS). Annuals are the predominant life form (54.7%). SFS and NFS vary in species composition, sharing only 11.6% of species. Phytogeographical types vary among the three habitats, Inter- and intraslope species composition varies remarkably due to differential microclimatic conditions, demonstrating the effect of climate on species diversity at a microscale. A comparison with Evolution Canyon I shows differences in the flora caused by the changing climate conditions, due to the more northerly location. The differences include: a change from Quercus calliprinos plant community on the NFS of Evolution Canyon I to Acer obtusifolium ssp. syriacus and Laurus nobilis plant communities on the NFS of Evolution Canyon II. Likewise, a significantly different species distribution was found between the slopes of both canyons.
机译：在1999-2000年期间，在上加利利西部的纳哈尔·基济夫的一个微型站点的七个站点记录了植物的物种多样性，该站点被称为“进化峡谷II”，并与坎纳内尔山下纳哈勒奥伦的“进化峡谷I”进行了比较。位于Nahal Keziv西南38公里处。朝南的斜坡（SFS）上较高的太阳辐射会导致温暖，干燥的营地和干燥的地中海“热带草原”植物形成栖息地，而朝北的斜坡（NFS）则具有凉爽，中度，密集的“南欧”森林。河流和植物群落仅限于谷底（VB）。在7000 m（2）的面积中，我们记录了283种维管植物物种，分别属于200属和56个科。植物覆盖率介于70％-90％（SFS）和100％（NFS）之间。年金是主要的生活形式（54.7％）。 SFS和NFS的物种组成各不相同，仅占11.6％。三个生境的植物地理类型各不相同，坡间和坡内物种组成由于微气候条件的差异而显着变化，这表明气候对微观物种多样性的影响。与Evolution Canyon I的比较显示，由于地理位置偏北，气候条件变化导致植物区系差异。区别包括：从Evolution Canyon I的NFS上的Quercus calliprinos植物群落变成了Acer obtusifolium ssp。进化峡谷II NFS上的叙利亚和月桂树植物群落。同样，在两个峡谷的斜坡之间发现了明显不同的物种分布。

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