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首页> 外文期刊>Gayana. Botanica >Comparación entre el bosque templado austral y el bosque tucumano-boliviano considerando géneros con especies de hábito arbóreo/Comparison between the austral temperate forest and the tucumano-boliviano forest through genera with species of arboreal habits
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Comparación entre el bosque templado austral y el bosque tucumano-boliviano considerando géneros con especies de hábito arbóreo/Comparison between the austral temperate forest and the tucumano-boliviano forest through genera with species of arboreal habits

机译：考虑树栖习性物种的南部温带森林与土库曼-玻利维亚森林的比较/通过树栖习性物种的产生与南方温带森林与土库曼-玻利维亚森林的比较

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摘要

The fitogeographic areas from the tucumano-boliviano forest (BTB) from Argentina and Bolivia and the temperate austral forest (BTA) from Argentina and Chile are separated by de arid diagonal (approximately by 2,000 km between forests). The objective of this work is to know how many genera with species of arboreal habits are distributed in the temperal austral and tucumano-boliviano forests. In this work, the genera with species of arboreal habits distributed in each forest are analyzed and compared. In addition, the biogeographic element for each genus is shown. 125 and 29 genera were detected in BTB and in BTA respectively, and the remaining 13 genera were present in both forests. The total 167 genera were distributed in eight biogeographic elements. The most abundant elements were the neotropical and pantropical, followed by the austral and temperate forest endemic. The first ones were more frequent in the BTB, while the other two elements were more frequent in the BTA. The genera shared by both forests corresponded to the austral, neotropical, pantropical, and holartic elements. From these shared genera, different hypotheses to explain the disjunction are postulated. One hypothesis is that they may have distributed widely in ancient times and that the geoclimatic conditions caused the disjunction. Another hypothesis is that long distance dispersal events occurred after the formation of the arid diagonal. Restricted BTA genera would suggest relictual status of an ancient origin in Gondwanaland, while restricted BTB genera would be products of various relatively local diversifications. [PUBLICATION ABSTRACT]
机译：来自阿根廷和玻利维亚的tucumano-boliviano森林（BTB）以及来自阿根廷和智利的温带南方森林（BTA）的地理地理区域以干旱对角线隔开（森林之间大约相距2000 km）。这项工作的目的是要知道在南方的温带和tucumano-boliviano森林中有多少属的树栖习性物种。在这项工作中，分析并比较了在每个森林中分布有树栖习性物种的属。此外，还显示了每个属的生物地理要素。在BTB和BTA中分别检测到125和29属，其余13个属都存在于两个森林中。总共167个属分布在八个生物地理要素中。最丰富的元素是新热带和泛热带，其次是南方和温带森林特有种。第一个要素在BTB中更为频繁，而其他两个要素在BTA中则更为频繁。两种森林共有的属分别对应于南方，新热带，泛热带和古生元素。从这些共同的属中，提出了不同的假设来解释分离。一种假设是，它们可能在远古时代就已广泛分布，并且是由地球气候条件造成的。另一个假设是，在干旱对角线形成之后发生了长距离扩散事件。受限制的BTA属将暗示冈瓦纳兰地区的古代起源的遗迹地位，而受限制的BTB属将是各种相对本地多元化的产物。 [出版物摘要]

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    《Gayana. Botanica》 |2010年第2期|p.176-187|共12页
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    María Paula Quiroga;

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    MARÍA PAULA QUIROGALaboratorio Ecotono, INIBIOMA-CONICET / Centro Regional Universitario Bariloche, Quintral 1250. Bariloche, Río Negro. Argentina.pquiroga@crub.uncoma.edu.ar, emepequ@gmail.com,;

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