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首页> 外文期刊>Polar biology >Alien or native? Examining a case of Melampyrum pratense in Iceland
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Alien or native? Examining a case of Melampyrum pratense in Iceland

机译：外星人还是本地人？在冰岛检查一例Melampyrum pratense

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In 2016, a single, large population of Melampyrum pratense (Orobanchaceae) was discovered in Vaglaskógur forest in NE Iceland. This population can be considered as extremely disjunct as the closest population of this myrmecochorous, slowly dispersing, hemiparasitic plant species is known from the Shetland Islands located ca. 1000 km south-east from Vaglaskógur. Our research was aimed at elucidating whether the species is a recent anthropogenic addition to the Icelandic flora or if its presence should be attributed to a natural long-distance dispersal event. In order to answer this question, we employed a diversified methodological approach consisting of a traditional vegetation survey, faunistic study and two mathematical modelling techniques. Our work showed that M. pratense inhabits an almost undisturbed birch forest, and the formation of the population of this size would take more than 3000 years given the absence of main dispersal vectors. Using the distribution modelling approach, we also determined that climatic conditions facilitating the establishment of the population were in place since at least mid-Holocene.
机译：2016年，在冰岛东北部的Vaglaskógur森林中发现了一个单一的，大量的棉铃虫（Orobanchaceae）。从位于加拿大设得兰群岛的设德兰群岛得知，该种群是最杂散的，缓慢散布的半寄生植物物种，与之最接近。从Vaglaskógur向东南1000公里。我们的研究旨在阐明该物种是否是冰岛植物区系的最近人为因素，或者其存在是否应归因于自然的长距离扩散事件。为了回答这个问题，我们采用了多种方法，包括传统的植被调查，随机研究和两种数学建模技术。我们的工作表明，普拉特森斯（M. pratense）居住在几乎未受干扰的桦木森林中，由于缺乏主要的传播媒介，这种规模的人口形成将需要3000多年的时间。使用分布建模方法，我们还确定，至少从全新世以来，气候条件便有利于人口的建立。

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