检索结果-南通市图书馆

Bacterial microcosms obey taylor’s law:effects of abiotic and biotic stress and genetics on mean and variance of population density

引用

Ecological Processes 2012年第1期1卷 77-82页

作者： Oliver Kaltz Patricia Escobar-Páramo Michael E Hochberg Joel E Cohen Institut des sciences de l’Evolution UMR CNRS-UM2-IRD5554CC 065UniversitéMontpellier 2Place Eugène BataillonMontpellier Cedex 0534095France Centro Internacional de Física(CIF) Biotechnology GroupUniversidad Nacional de ColombiaCra 30 N°45-03BogotáDCColombia Laboratory of Populations Rockefeller and Columbia Universities1230 York AvenueBox 20New YorkNY10065-6399USA

Introduction:According to the empirical regularity called taylor’s law,the variance of population density in samples of populations is a power of the mean population *** exponent is often between 1 and *** experiments investigated how genetics,evolution,and environment shape taylor’s ***:Genetically different strains(wild type and hypermutator)of the bacterium Pseudomonas fluorescens evolved and were assayed under different environmental conditions(with and without antibiotic rifampicin and bacteriophage sBW252,separately and in combination).Results:Experimental treatments altered the exponent b,but not the power law form,of the relation between variance and mean population *** populations treated only with rifampicin had a narrow range of mean population densities and exponent b=*** exposed to rifampicin plus phage had b=*** ancestral,control,and phage-exposed populations,mean abundance varied widely and b was not significantly different from *** factors(mutation rate,selection)and ecological factors(abiotic,biotic)jointly influenced ***:taylor’s power law relationship accurately and robustly described variance as a function of mean population density,with overall exponent b=*** and other experiments with different factors acting on bacterial population size support the relevance of models that predict‘universal’patterns of fluctuation scaling.

关键词： taylor’s law Pseudomonas fluorescens rifampicin bacteriophage genetics

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

taylor’s Power law for Ecological Communities—An Explanation on Nonextensive/Nonlinear statistical Grounds

引用

Journal of Applied Mathematics and Physics 2014年第8期2卷 762-770页

作者： Joao D.T.Arruda-Neto Henriette Righi Marcos Antonio G.Cascino Godofredo C.Genofre Joel Mesa Instituto de Física Universidade de Sao PauloSao PauloBrasil CEPEsq Centro UniversitárioÍtalo-BrasileiroSao PauloBrasil sao Paulo state University UNESPBotucatuBrasil

A new idea on how to conceptually interpret the so-called taylor’s power law for ecological communities is presented. The core of our approach is based on nonextensive/nonlinear statistical concepts, which are shown to be at the genesis of all power laws, particularly when a system is constituted by long-range interacting elements. In this context, the ubiquity of the taylor’s power law is discussed and addressed by showing that long-range interactions are at the heart of the internal dynamics of populations.

关键词： taylor’s law Long-Range Interaction Population Variabilities Ecological Complexity Ecological Nonlinearity

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：