Results 91 to 100 of about 34,495 (219)

First molecular phylogenetic insights into the evolution of Eriocaulon (Eriocaulaceae, Poales) [PDF]

open access: yes, 2019
Eriocaulon is a genus of c. 470 aquatic and wetland species of the monocot plant family Eriocaulaceae. It is widely distributed in Africa, Asia and America, with centres of species richness in the tropics.
Barfod, Anders S   +20 more
core   +2 more sources

Temporal stability and spatial patterns of genetic diversity in populations of the climate‐vulnerable fucoid Scytothalia dorycarpa

open access: yesJournal of Phycology, EarlyView.
Abstract Climate change is driving the loss of genetic diversity, potentially limiting species' capacity to adapt to environmental change. Detecting changes in genetic diversity requires replicated temporal data, which is lacking for most species. Here, we combined contemporary and historical specimens of the climate‐vulnerable fucoid Scytothalia ...
Jane M. Edgeloe   +6 more
wiley   +1 more source

Analyzing multi-locus plant barcoding datasets with a composition vector method based on adjustable weighted distance. [PDF]

open access: yesPLoS ONE, 2012
BackgroundThe composition vector (CV) method has been proved to be a reliable and fast alignment-free method to analyze large COI barcoding data. In this study, we modify this method for analyzing multi-gene datasets for plant DNA barcoding. The modified
Chi Pang Li   +3 more
doaj   +1 more source

DNA barcoding as a molecular tool to track down mislabeling and food piracy [PDF]

open access: yes, 2015
DNA barcoding is a molecular technology that allows the identification of any biological species by amplifying, sequencing and querying the information from genic and/or intergenic standardized target regions belonging to the extranuclear genomes ...
Barcaccia, Gianni   +2 more
core   +2 more sources

Hidden lineages in the African Sky Islands: A taxonomic reevaluation of Afrocarduus (Compositae)

open access: yesJournal of Systematics and Evolution, EarlyView.
Species delimitation is crucial for biodiversity studies. Using Hyb‐Seq and phylogenomics, we reassessed Afrocarduus, endemic to Afromontane and Afroalpine regions, uncovering 16 evolutionary lineages (2.3 Mya). Morphological data support their distinctiveness, with acaulescence evolving independently twice. The traditionally broad A.
Lucía D. Moreyra   +9 more
wiley   +1 more source

Three novel science activities relating to the structure of the atom, bioinformatics, and the denaturation of protein [PDF]

open access: yes, 2013
Plan B Paper. 2013. Master of Science in Education- Physics--University of Wisconsin-River Falls. Physics Department. 30 leaves. Includes bibliographical references (leaf 10).This paper describes three novel activities that were designed to teach ...
Duerst, Robert
core   +1 more source

Identification of the relationship between Chinese Adiantum reniforme var. sinense and Canary Adiantum reniforme [PDF]

open access: yes, 2015
© 2014 Wang et al.; licensee BioMed Central. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and ...
Chen, H-F   +8 more
core   +1 more source

Integrative phylogenomics and morphology reveal the evolution and biogeography of Encephalartos (Zamiaceae)

open access: yesJournal of Systematics and Evolution, EarlyView.
We aimed to conduct phylogenetic analyses of Encephalartos, a cycad genus endemic to Africa, using 3545 single‐copy nuclear genes extracted from transcriptome data, covering 64/65 of the recognized species, along with inference of divergence times using two secondary calibration points.
Sadaf Habib   +8 more
wiley   +1 more source

Efficiency of rubidium marking in Aedes albopictus (Diptera: Culicidae): preliminary evaluation on persistence of egg labeling, survival, and fecundity of marked female

open access: yesMemorias do Instituto Oswaldo Cruz, 2004
Rubidium chloride (RbCl) has been used for the study of vector biology and behavior, although the efficacy of marking, egg production, and survivorship of marked females have been poorly studied. Four concentrations of RbCl were tested, among which 0.025
Rafael Maciel-de-Freitas   +2 more
doaj   +1 more source

Burmese amber fossils bridge the gap in the Cretaceous record of polypod ferns [PDF]

open access: yes, 2016
publisher: Elsevier articletitle: Burmese amber fossils bridge the gap in the Cretaceous record of polypod ferns journaltitle: Perspectives in Plant Ecology, Evolution and Systematics articlelink: http://dx.doi.org/10.1016/j.ppees.2016.01.003 ...
Alexander R. Schmidt   +75 more
core   +1 more source

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