Distribution Modeling of the Hybrid Sister Taxa in Passeriformes

S. Rahmati, M. Gholamalifard, A. Gholamhosseini, S. M. Ghasempouri
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Abstract

Background and Aims: Species separation based on phylogenetic results can be supported by modeling whose input is habitat data. In the present study, two sister taxa that have been separated based on molecular documentation have been examined in terms of habitat influencing factors that may have been involved in this separation, as well as in terms of past and future historical distribution. Materials and methods: in order to model the distribution of species, Bio-Climatic variables from CHESLA database with variables of DEM, Slope and vegetation index were examined as habitat data to input the model. Also, the presence points of the species were filtered after collection in the reproductive interval and added to the models as train data. In this study, sdm package including eight models (GLM،GAM ، BRT، RF،CART ،SVM ، MaxEnt و MARS) in R software environment was used for modeling. Modeling of species distribution from the last glacial period to 2050 was also performed. Results and discussion: the results showed the ecological niche separation of the species under the influence of environmental variables. . Also, according to the results, in 2050, suitability habitats for Embriza bruniceps species will be limited to the northeast of the country and for Embriza melanocephala species, suitability will be limited to areas in the south of Alborz mountain range, northwest and west of Iran. According to the results the area of suitable habitats for Embriza melanocephala species in the west has been less than today, which according to studies,
通道形目杂交姊妹类群的分布模型
背景与目的:基于系统发育结果的物种分离可以通过以生境数据为输入的模型来支持。本文对两个基于分子文献分离的姊妹类群进行了生境影响因素的研究,并对其过去和未来的历史分布进行了分析。材料和方法:为了建立物种分布模型,将CHESLA数据库中的生物气候变量与DEM、Slope和植被指数变量作为栖息地数据输入模型。在繁殖期采集后,过滤物种的存在点作为训练数据加入到模型中。本研究采用R软件环境下包含八个模型(GLM،GAM, brt, RF،CART ،SVM, MaxEnt MARS)的sdm包进行建模。还对末次冰期至2050年的物种分布进行了模拟。结果与讨论:结果显示了环境变量对物种生态位分离的影响。结果表明,到2050年,bruniceps Embriza物种的适宜生境将局限于伊朗东北部,melanocephala物种的适宜生境将局限于Alborz山脉南部、伊朗西北部和西部地区。根据研究结果,西部黑头羚适宜栖息地的面积比现在要小,
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