检索结果-南通市图书馆

A procedure to assess the spatial variability in the importance of abiotic factors affecting distributions： the case of world freshwater fishes

引用

动物学报：英文版 2018年第5期64卷 549-557页

作者： Ana M. MANJARRES-HERNANDEZ Castor GUISANDE Emilio GARCiA-ROSELLO Patricia PELAyO-VILLAMIL Jacinto GONZALEZ-DAcOSTA Juirgen HEINE Luis GONZALEZ VILAS Carlos GRANADO-LORENClO Santiago R. DUQUE Jorge M. LOBO alnstituto Amazonico de Investigaciones-IMANI Universidad Nacional de Colombia Leticia A.A. 215 Colombia 910001 Facultad de Ciencias del Mar Universidad de Vigo Vigo 36310 Spain Departamento de Informatica Edificio Fundicien Universidad de Vigo Vigo 36310 Spain Grupo de Iciologia Universidad de Antioquia Medellin Colombia 050010 eDepartamento de Biologia Vegetal y Ecologia Facultad de Biologia Universidad de Sevilla Sevilla 41080 Spain Departamento de Biogeografia y Cambio Global Museo Nacional de Ciencias Naturales (CSIC) Calle de Jose Gutierrez Abascal 2 Madrid 28006 Spain

Understanding the factors shaping species' distributions is a key longstanding topic in ecology with unresolved issues. The aims were to test whether the relative contribution of abiotic factors that set the geographical range of freshwater fish species may vary spatially and/or may depend on the geographical extent that is being considered. The relative contribution of factors, to discriminate between the conditions prevailing in the area where the species is present and those existing in the considered extent, was estimated with the instability index included in the R package SPEDInstabR. We used 3 different extent sizes: 1) each river basin where the species is present (local); 2) all river basins where the species is present (regional); and 3) the whole Earth (global). We used a data set of 16,543 freshwater fish species with a total of 845,764 geographical records, together with bioclimatic and topographic variables. Factors associated with temperature and altitude show the highest relative contribution to explain the distribution of freshwater fishes at the smaller considered extent. Altitude and a mix of factors associated with temperature and precipitation were more important when using the regional extent. Factors associated with precipitation show the highest contribution when using the global extent. There was also spatial variability in the importance of factors, both between species and within species and from region to region. Factors associated with precipitation show a clear latitudinal trend of decreasing in importance toward the equator.

关键词：空间可变性淡水鱼估计生活盒子世界地理范围相对贡献

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Diversity Dimensions of Freshwater Fish Species around the World

引用

Journal of Geographic Information System 2021年第1期13卷 1-18页

作者： Carlos Granado-Lorencio Cástor Guisande Patricia PELAyO-VILLAMIL Ana Manjarrés-Hernández Emilio García-Roselló Juergen Heine Elisa Pérez-Costas Luis González-Vilas Jacinto González-Dacosta Jorge M. Lobo Departamento de Biología Vegetal y Ecología Facultad de Biología Universidad de Sevilla Seville Spain Facultad de Ciencias del Mar Universidad de Vigo Campus Lagoas-Marcosende Vigo Spain Grupo de Ictiología Universidad de Antioquia Medellín Colombia Instituto Amazónico de Investigaciones (IMANI) Universidad Nacional de Colombia Leticia Colombia Department of Computer Science Universidad de Vigo Campus Lagoas-Marcosende Vigo Spain Departamento de Biogeografía y Cambio Global Museo Nacional de Ciencias Naturales (CSIC) Madrid Spain

The quality and coverage of the available taxonomical and geographical information and the recognition that diversity is multi-faceted are two main factors that hinder to understand the spatial and temporal variations of biodiversity. In this study, we aim to quantify the global distribution of five diversity components used to assess freshwater fish diversity in river basins around the world. The multidimensional character of these diversity components was estimated and the so obtained diversity dimensions mapped. This was done taking into account those well-surveyed basins discriminated by considering collector’s curves, and additionally by controlling for the effect of survey effort on all considered diversity components. A total of 1,472,109 occurrence records were analysed, corresponding to 17,292 species of freshwater fishes. Five diversity components were considered: functional richness, species richness, taxonomic diversity, and two rarity measures. Well-surveyed river basins were discriminated using accumulation curves. The effects of survey biases and knowledge gaps were minimized by determining the relationship of each component with the completeness values calculated for each river basin. The geographical pattern derived from raw data is skewed by the unequal knowledge available, and all diversity components were positively correlated with completeness values. The first dimension described the association between species richness and functional diversity. The second dimension represented rarity and taxonomic diversity. The congruence between species richness and functional diversity suggests that ecosystem functions increase with the number of fish species present in river basins and that a decrease in species richness may involve a loss of functionality. The levels of rarity and taxonomic diversity of many species-poor basins found in arid and cold regions suggest that the distinctiveness of their freshwater fishes is primarily a consequence of how isolated these basins are.

关键词： Diversity Components Functional Diversity Species Richness Rarity Taxonomic Diversity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：