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Ecological niche modeling of Stenella dolphins (Cetartiodactyla: Delphinidae) in the southwestern Atlantic Ocean

机译:大西洋西南大西洋中的海豚海豚的生态位模型研究(Cetartiodactyla:Delphinidae)

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摘要

Since the Moreno's et al. (2005) work, no study was done to update the distribution patterns of Stenella dolphins in the southwestern Atlantic Ocean. Ecological niche modeling was used to redefine the distribution patterns of Stenella dolphins in this area of Atlantic Ocean. Maximum entropy method (Maxent) was employed to generate models using a set of environmental variables as explanatory variables of the location records obtained by sighting and accidental captures. All ecological niche models performed returned AUC values >0.9. Areas with high environmental suitability for pantropical spotted dolphin (Stenella attenuata), Clymene dolphin (Stenella clymene) and spinner dolphins (Stenella longirostris) are found in warm (>25 degrees C) and deep waters (>= 1000 m). High environmental suitability for Atlantic spotted dolphin (Stenella frontalis) seems to occur between 20.5 degrees S and 30 degrees S in the southeastern Brazilian coastal waters. The projected maps of species distributions showed patterns closely related to environmental changes at a fine spatial scale and added valuable information about the offshore limits of those oceanic species. The results suggest that the different species of Stenella have distinct environmental requirements in the southwestern Atlantic Ocean. (C) 2015 Elsevier B.V. All rights reserved.
机译:由于莫雷诺等。 (2005年)的工作,没有进行任何研究来更新史登氏海豚在西南大西洋的分布模式。生态位模型被用来重新定义史登氏海豚在大西洋地区的分布模式。使用最大熵方法(Maxent)生成模型,该模型使用一组环境变量作为通过目击和意外捕获获得的位置记录的解释变量。所有生态位模型都执行了返回的AUC值> 0.9。在温暖(> 25摄氏度)和深水(> = 1000 m)中发现了对泛热带斑点海豚(Stenella tensa),Clymene海豚(Stenella clymene)和旋转海豚(Stenella longirostris)具有高度环境适应性的区域。在巴西东南沿海水域中,大西洋斑点海豚(Stenella frontalis)的高度环境适应性似乎发生在20.5至30度之间。预计的物种分布图显示出在精细的空间尺度上与环境变化密切相关的模式,并增加了有关这些海洋物种离岸界限的宝贵信息。结果表明,西南大西洋不同种类的Stenella对环境的要求不同。 (C)2015 Elsevier B.V.保留所有权利。

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    Univ Fed Rio Grande do Sul, Lab Sistemat & Ecol Aves & Mamiferos Marinhos LAB, Programa Posgrad Biol Anim, Dept Zool, BR-9150170 Porto Alegre, RS, Brazil;

    Univ Fed Rio Grande do Sul, Dept Zool, Programa Posgrad Biol Anim, Lab Herpetol, BR-9150170 Porto Alegre, RS, Brazil;

    Univ FEEVALE, Mol Microbiol Lab, BR-93352000 Novo Hamburg, RS, Brazil;

    Univ Fed Rio Grande do Sul, Dept Zool, Programa Posgrad Biol Anim, Lab Herpetol, BR-9150170 Porto Alegre, RS, Brazil;

    Inst Oswaldo Cruz, BR-21040900 Rio De Janeiro, RJ, Brazil|GEMM Lagos, Rio De Janeiro, Brazil;

    Univ Fed Rio Grande do Sul, Lab Sistemat & Ecol Aves & Mamiferos Marinhos LAB, Programa Posgrad Biol Anim, Dept Zool, BR-9150170 Porto Alegre, RS, Brazil|Univ Fed Rio Grande do Sul, Inst Biociencias, Ctr Estudos Costeiros Limnol & Marinhos CECLIMAR, BR-R5956250 Imbe, RS, Brazil;

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  • 正文语种 eng
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  • 关键词

    Delphinidae; Atlantic Ocean; Maxent; Potential Distribution; Environmental requirements;

    机译:ph科;大西洋;马克森;电位分布;环境要求;

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