Search
Now showing items 1-10 of 309
Disentangling morphologically similar species of the Andean forest: Integrating results from multivariate morphometric analyses, niche modelling and climatic space comparison in Kaunia (Eupatorieae: Asteraceae)
(Wiley Blackwell Publishing, Inc, 2018-01)
Six subtropical montane forest Kaunia spp. are remarkable for their superficial morphological similarity. We aim to explore different sources of data to clarify species delimitation in this complex of Kaunia. Morphological ...
Multivariate studies of Ipheion (Amaryllidaceae, Allioideae) and related genera
(Springer Wien, 2013)
Determination of ochratoxin A in coffee and tea samples by coupling second-order multivariate calibration and fluorescence spectroscopy
(Elsevier Science, 2020-11-01)
A new method to quantify the mycotoxin ochratoxin A (OTA) in coffee and tea samples is proposed based on second-order multivariate calibration and excitation-emission fluorescence matrix (EEFM) data. Experimental conditions ...
A Morphometric Approach in South American Stipoids with Plumose and Pappus-Like Awns
(American Society of Plant Taxonomists, 2020-05-13)
Within grasses, the tribe Stipeae is highly specialized by the presence of only one fruit per spikelet and characterized by the diversity in the ornamentation of the floret. Our aim was to analyze similarities and differences ...
Multivariate Morphometric Confirmation of Solidago chilensis (Asteraceae: Astereae) in Azores
(Guy Nesom, 2017-06-01)
An herbarium collection of Solidago from near Pico Island, Azores, Portugal, is reported here tobe Solidago chilensis Meyen. One collection (Botelho Gonçalves 1825, BM) was included in amultivariate morphometric analysis ...
A multivariate morphometric delimitation of species boundaries in the South American genus Nicoraepoa (Poaceae: Pooideae: Poeae)
(Springer Wien, 2018-05)
A multivariate morphometric study of the genus Nicoraepoa was carried out to examine patterns of morphological variation among the species and to identify additional characters to allow a clearer delimitation among species. ...
Species delimitation in the Sporobolus aeneus complex (Zoysieae, Chloridoideae, Poaceae) using the phylogenetic species concept
(Wiley, 2010-12)
The "Sporobolus aeneus complex" constitutes a morphologically well‐defined group of species with lax, exerted, pyramidal panicles with verticillate branches, and comprises 14 species and six infraspecific taxa in southern ...
Multivariate analyses of the activity pattern and behavior of the lesser anteater on open and closed days at Córdoba Zoo, Argentina
(Routledge Journals, Taylor & Francis Ltd, 2020-07-29)
The human factor is one of the major determinants of animal welfare in zoos. Assessing changes in activity patterns, behavior and space use due to human presence might help understanding visitors’ influence on these animal ...
Assessing spatial genetic structure from molecular marker data via principal component analyses: a case study in a Prosopis sp. fores
(Scientific Research Publishing, 2014-01)
Advances in genotyping technology, such as molecular markers, have noticeably improved our capacity to characterize genomes at multiple loci. Concomitantly, the methodological framework to analyze genetic data has expanded, ...
Monitoring substrate and products in a bioprocess with FTIR spectroscopy coupled to artificial neural networks enhanced with a genetic-algorithm-based method for wavelength selection
(Elsevier Science, 2006-01)
An experiment was developed as a simple alternative to existing analytical methods for the simultaneous quantitation of glucose (substrate) and glucuronic acid (main product) in the bioprocesses Kombucha by using FTIR ...