...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Animal biology >Modelling correlates of microhabitat use of two sympatric lizards: a model selection approach
【24h】

Modelling correlates of microhabitat use of two sympatric lizards: a model selection approach

机译：两只同伴蜥蜴的微栖息地使用相关性的建模：模型选择方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Studies of the ecological characteristics of sympatric species are important for developing and testing ecological theory, but may be of interest also for conservation biology research when the study species are threatened, endemic and with narrow distribution. Here, we studied a particular aspect of the ecology (i.e. microhabitat use) of two sympatric lizards (Archaeolacerta bedriagae, Podarcis tiliguerta) endemic to Sardinia and Corsica (Tyrrhenian islands). We studied this issue by modelling procedures, using field data collected at six study areas in both Sardinia and Corsica. We recorded 18 microhabitat variables for each lizard spot. The variables were entered as independent variables in logistic regression analysis with the presence/absence data for the lizards as the dependent variable, and Akaike Information Criterion was applied to select the best models describing the ecological equation of each study species. In total, we based our modelling approach on 296 individuals of A. bedriagae and 182 of P tiliguerta. The general logistic regression models revealed that five distinct variables were significantly correlated to the presence/absence of A. bedriagae, and six to that of P tiliguerta. We found that three variables were important for only P tiliguerta, two for only A. bedriagae, and three for both species and with an identical sign. We also found some similarities in microhabitat choice between species. Indeed, some variables were always present in the best models of both A. bedriagae and P tiliguerta. In general, A. bedriagae was more related to spots with large stones and low vegetation than P tiliguerta, which, on the contrary, choose spots relatively closer to vegetation. The various reasons explaining the observed similarities and differences between species were examined. It is suggested that our modelling procedure may be widely used for studies of lizard community ecology, because it easy to use and allows a more-in-depth analysis than normal 'count approaches'.
机译：同胞物种生态特征的研究对于开发和检验生态学理论很重要，但是当研究物种受到威胁，地方性和分布狭窄时，也可能对保护生物学研究感兴趣。在这里，我们研究了撒丁岛和科西嘉岛（第勒尼安群岛）特有的两种同伴蜥蜴（Archaeolacerta bedriagae，Podarcis tiliguerta）在生态学上的特定方面（即使用微栖息地）。我们使用在撒丁岛和科西嘉岛六个研究区域收集的现场数据，通过建模程序研究了此问题。我们为每个蜥蜴斑记录了18个微生境变量。在对数回归分析中将变量作为自变量输入，以蜥蜴的有无数据作为因变量，并使用Akaike信息准则选择描述每个研究物种的生态方程的最佳模型。总的来说，我们基于296个bedriagae虾和182个Tiliguerta虾的建模方法。一般的Logistic回归模型显示，五个不同变量与A. bedriagae的存在/不存在显着相关，而六个与Tiliguerta的显着相关。我们发现三个变量仅对P tiliguerta重要，两个变量仅对A. bedriagae有效，三个变量对两个物种均具有相同的符号。我们还发现了物种之间在微生境选择方面的一些相似之处。的确，在A. bedriagae和P tiliguerta的最佳模型中总是存在一些变量。总体而言，A。bedriagae与大石头和低植被的斑点比P tiliguerta更为相关，相反，P。Tiliguerta则选择相对更靠近植被的斑点。检查了解释所观察到的物种之间的相似性和差异的各种原因。建议我们的建模程序可以广泛地用于蜥蜴群落生态研究，因为它比常规的“计数方法”易于使用并且可以进行更深入的分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号