Results 51 to 60 of about 78,490 (142)

A Note on Encodings of Phylogenetic Networks of Bounded Level [PDF]

open access: yes, 2009
Driven by the need for better models that allow one to shed light into the question how life's diversity has evolved, phylogenetic networks have now joined phylogenetic trees in the center of phylogenetics research. Like phylogenetic trees, such networks canonically induce collections of phylogenetic trees, clusters, and triplets, respectively. Thus it
arxiv   +1 more source

Comparison of Tree-Child Phylogenetic Networks [PDF]

open access: yesarXiv, 2007
Phylogenetic networks are a generalization of phylogenetic trees that allow for the representation of non-treelike evolutionary events, like recombination, hybridization, or lateral gene transfer. In this paper, we present and study a new class of phylogenetic networks, called tree-child phylogenetic networks, where every non-extant species has some ...
arxiv  

Encoding and Constructing 1-Nested Phylogenetic Networks with Trinets [PDF]

open access: yesarXiv, 2011
Phylogenetic networks are a generalization of phylogenetic trees that are used in biology to represent reticulate or non-treelike evolution. Recently, several algorithms have been developed which aim to construct phylogenetic networks from biological data using {\em triplets}, i.e.
arxiv  

Trinets encode tree-child and level-2 phylogenetic networks [PDF]

open access: yesarXiv, 2012
Phylogenetic networks generalize evolutionary trees, and are commonly used to represent evolutionary histories of species that undergo reticulate evolutionary processes such as hybridization, recombination and lateral gene transfer. Recently, there has been great interest in trying to develop methods to construct rooted phylogenetic networks from ...
arxiv  

Bridging the gap between rooted and unrooted phylogenetic networks [PDF]

open access: yesarXiv, 2015
The need for structures capable of accommodating complex evolutionary signals such as those found in, for example, wheat has fueled research into phylogenetic networks. Such structures generalize the standard phylogenetic tree model by also allowing cycles and have been introduced in rooted and unrooted form. In contrast to phylogenetic trees, however,
arxiv  

Syntactic Phylogenetic Trees [PDF]

open access: yesarXiv, 2016
In this paper we identify several serious problems that arise in the use of syntactic data from the SSWL database for the purpose of computational phylogenetic reconstruction. We show that the most naive approach fails to produce reliable linguistic phylogenetic trees. We identify some of the sources of the observed problems and we discuss how they may
arxiv  

PhyloJS: Bridging phylogenetics and web development with a JavaScript utility library

open access: yesEcology and Evolution
There is an increasing number of libraries devoted to parsing, manipulating and visualising phylogenetic trees in JavaScript. Many of these libraries bundle tree manipulation with visualisation, but have limited ability to manipulate trees and lack ...
Leo A. Featherstone, Wytamma Wirth
doaj   +1 more source

Strong intraspecific trait variation in a tropical dominant tree species along an elevational gradient

open access: yesPlant Diversity, 2020
Functional trait variation of plant species includes both inter- and intraspecific variation; however, trait-based plant ecology generally considers only interspecific variation while ignoring intraspecific variation.
Wumei Xu, Kyle W. Tomlinson, Jie Li
doaj  

The Fair Proportion is a Shapley Value on phylogenetic networks too [PDF]

open access: yesarXiv, 2018
The Fair Proportion of a species in a phylogenetic tree is a very simple measure that has been used to assess its value relative to the overall phylogenetic diversity represented by the tree. It has recently been proved by Fuchs and Jin to be equal to the Shapley Value of the coallitional game that sends each subset of species to its rooted ...
arxiv  

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