Results 11 to 20 of about 329,337 (282)

Perfect Taxon Sampling and Fixing Taxon Traceability: Introducing a Class of Phylogenetically Decisive Collections of Taxon Sets

open access: yesBulletin of Mathematical Biology, 2012
Abstract Phylogenetically decisive collections of taxon sets have the property that if trees are chosen for each of their elements, as long as these trees are compatible, the resulting supertree is unique. This means that as long as the trees describing the phylogenetic relationships of the (input) species sets are compatible, they can only ...
Fischer, M, Pott, J
openaire   +3 more sources

Polyhedral geometry of Phylogenetic Rogue Taxa [PDF]

open access: yes, 2010
It is well known among phylogeneticists that adding an extra taxon (e.g. species) to a data set can alter the structure of the optimal phylogenetic tree in surprising ways. However, little is known about this "rogue taxon" effect.
Cueto, María Angélica   +1 more
core   +2 more sources

Cognitive-matrix analysis of research on primary health care development in the Russian Federation for the period from 2012 to 2022

open access: yesКардиоваскулярная терапия и профилактика, 2023
The distribution of publications posted in the Elibrary for the period from January 1, 2012 to December 31, 2022, in the structure of a cognitive matrix of taxonomic characteristics for the analysis and assessment of primary health care in the Russian ...
S. A. Orlov   +11 more
doaj   +1 more source

Vicia incisa (Fabaceae). Taxonomical and chorological notes [PDF]

open access: yes, 2017
The classification of the Vicia sativa aggregate is unsatisfactory. Concerning the taxonomic value and choice of rank of some of these taxa, there are disagreements among botanists.
Abbate, G., Iamonico, D., Iberite, M.
core   +1 more source

Three new species of Grouvellinus Champion, 1923 from Maliau Basin, Sabah, Borneo, discovered by citizen scientists during the first Taxon Expedition (Insecta, Coleoptera, Elmidae)

open access: yesZooKeys, 2018
Further results are presented of the first field course at Maliau Basin, Malaysian Borneo organized by Taxon Expeditions, an organization which enables citizen scientists to be directly involved in taxonomic discoveries.
Hendrik Freitag   +2 more
doaj   +3 more sources

Annotated checklist of amphibians and reptiles of Qom Province, central Iran [PDF]

open access: yesIranian Journal of Animal Biosystematics, 2015
The updated checklist of amphibians and reptiles of Qom Province, Central Iran is presented. Totally 46 species, 35 genera and 17 families of reptiles and amphibians are reported in the area. The most diverse suborder is serpentes with 19 species or 41.3%
Seyed Mahdi Kazemi   +6 more
doaj   +1 more source

FlorealData : Des traits de vie d’espèces végétales pour le calcul d’indices agronomiques et écologiques des communautés prairiales

open access: yesCahiers Agricultures, 2021
La transition agroécologique des systèmes d’élevage en zone herbagère nous amène à mieux concilier deux disciplines complémentaires que sont l’écologie et l’agronomie.
Theau Jean-Pierre   +1 more
doaj   +1 more source

Taxon-Function Decoupling as an Adaptive Signature of Lake Microbial Metacommunities Under a Chronic Polymetallic Pollution Gradient

open access: yesFrontiers in Microbiology, 2018
Adaptation of microbial communities to anthropogenic stressors can lead to reductions in microbial diversity and disequilibrium of ecosystem services. Such adaptation can change the molecular signatures of communities with differences in taxonomic and ...
Bachar Cheaib   +4 more
doaj   +1 more source

A new dromaeosaurid (Dinosauria: Theropoda) from the Upper Cretaceous Wulansuhai Formation of Inner Mongolia, China [PDF]

open access: yes, 2010
We describe a new dromaeosaurid theropod from the Upper Cretaceous Wulansuhai Formation of Bayan Mandahu, Inner Mongolia. The new taxon, Linheraptor exquisitus gen. et sp.
Choiniere, J.N.   +10 more
core   +1 more source

Taxon Influence Index: Assessing Taxon-Induced Incongruities in Phylogenetic Inference [PDF]

open access: yesSystematic Biology, 2012
Understanding the evolutionary history of species is at the core of molecular evolution and is done using several inference methods. The critical issue is to quantify the uncertainty of the inference. The posterior probabilities in Bayesian phylogenetic inference and the bootstrap values in frequentist approaches measure the variability of the ...
Mariadassou, Mahendra   +2 more
openaire   +4 more sources

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