Results 21 to 30 of about 7,231,771 (330)

Species integrity in trees [PDF]

open access: yesMolecular Ecology, 2014
From California sequoia, to Australian eucalyptus, to the outstanding diversity of Amazonian forests, trees are fundamental to many processes in ecology and evolution. Trees define the communities that they inhabit, are host to a multiplicity of other organisms and can determine the ecological dynamics of other plants and animals. Trees are also at the
Ortiz-Barrientos, Daniel, Baack, Eric J.
openaire   +3 more sources

Estimating Species Trees from Unrooted Gene Trees [PDF]

open access: yesSystematic Biology, 2011
In this study, we develop a distance method for inferring unrooted species trees from a collection of unrooted gene trees. The species tree is estimated by the neighbor joining (NJ) tree built from a distance matrix in which the distance between two species is defined as the average number of internodes between two species across gene trees, that is ...
Liu, Liang, Yu, Lili
openaire   +3 more sources

Gene trees and species trees: irreconcilable differences [PDF]

open access: yesBMC Bioinformatics, 2012
Reconciliation is the classical method for inferring a duplication and loss history from a set of extant genes. It is based upon the notion of embedding the gene tree into the species tree, the incongruence between the two indicating evidence for duplication and loss.
Swenson Krister M, El-Mabrouk Nadia
openaire   +3 more sources

The Inference of Gene Trees with Species Trees [PDF]

open access: yesSystematic Biology, 2014
Review article in relation to the "Mathematical and Computational Evolutionary Biology" conference, Montpellier ...
Szöllősi, Gergely   +3 more
openaire   +5 more sources

ASTRAL-III: polynomial time species tree reconstruction from partially resolved gene trees

open access: yesBMC Bioinformatics, 2018
Evolutionary histories can be discordant across the genome, and such discordances need to be considered in reconstructing the species phylogeny. ASTRAL is one of the leading methods for inferring species trees from gene trees while accounting for gene ...
Chao Zhang   +3 more
semanticscholar   +1 more source

Evaluation of lodgepole pine (Pinus contorta Dougl. ex Loudon) on a provenance plot situated in a formerly air-polluted area of the Krušné hory Mts. at the age of 34 years

open access: yesJournal of Forest Science, 2018
The article evaluates 27 provenances of three subspecies of lodgepole pine on the Kovářská research plot (Krušné hory Mts.). The plot is part of a series of three established plots in various stand conditions.
Jiří ČÁP   +4 more
doaj   +1 more source

Spatiotemporal distribution patterns of soil nematodes along an altitudinal gradient in the cold temperate zone of China

open access: yesGlobal Ecology and Conservation, 2023
As important components of the cosmopolitan soil biota, soil nematodes are found at multiple trophic levels of the belowground food web and play an important role in soil function.
Fangyuan Shen   +5 more
doaj   +1 more source

Axiomatic opportunities and obstacles for inferring a species tree from gene trees [PDF]

open access: yes, 2014
The reconstruction of a central tendency `species tree' from a large number of conflicting gene trees is a central problem in systematic biology. Moreover, it becomes particularly problematic when taxon coverage is patchy, so that not all taxa are ...
Steel, Mike, Velasco, Joel D.
core   +2 more sources

Estimating coextinction risks from epidemic tree death [PDF]

open access: yes, 2012
At least 10% of the world's tree species are threatened with extinction and pathogens are increasingly implicated in tree threats. Coextinction and threats to affiliates as a consequence of the loss or decline of their host trees is a poorly understood ...
Jönsson, Mari, Thor, Göran
core   +3 more sources

ASTRAL: genome-scale coalescent-based species tree estimation

open access: yesBioinform., 2014
Motivation: Species trees provide insight into basic biology, including the mechanisms of evolution and how it modifies biomolecular function and structure, biodiversity and co-evolution between genes and species.
S. Mirarab   +5 more
semanticscholar   +1 more source

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