A NUMERICAL-TAXONOMIC STUDY OF THE GENUS BULNESIA (ZYGOPHYLLACEAE): CLUSTER ANALYSIS, ORDINATION AND SIMULATION OF EVOLUTIONARY TREES

1979 ◽  
Vol 66 (2) ◽  
pp. 133-140 ◽  
Author(s):  
J. V. Crisci ◽  
J. H. Hunziker ◽  
R. A. Palacios ◽  
C. A. Naranjo
Keyword(s):  
Cluster Analysis ◽  
Evolutionary Trees ◽  
Taxonomic Study ◽  
Numerical Taxonomic Study

scholarly journals Numerical taxonomic study of the genus Crotalaria L. (Crotalarieae, Fabaceae) in Nigeria

2018 ◽  
Vol 50 (1) ◽  
pp. 25-32
Author(s):  
Samaila Samaila Yaradua ◽  
Dhafer Ahmed Alzahrani ◽  
Abubakar Bello
Keyword(s):  
Cluster Analysis ◽  
Multivariate Analysis ◽  
Numerical Taxonomy ◽  
Field Work ◽  
Taxonomic Study ◽  
Cophenetic Correlation ◽  
Euclidian Distance ◽  
Ordination Analysis ◽  
Qualitative Characters ◽  
Numerical Taxonomic Study

Abstract Numerical taxonomic study of the genus Crotalaria L. in Nigeria was conducted to identify and differentiate some of the species of the genus Crotalaria using numerical taxonomy based on quantitative and qualitative characters. Field work was conducted, where different species were collected and analyzed using multivariate analysis. The results showed that all the collected species are distinct at Euclidian distance of 0.41 in the cluster analysis with Cophenetic correlation (r)=0.964. The ordination analysis based on the results of the PCA, separated the specimens into 7 groups corresponding to the result of cluster analysis. The first two components of the PCA account for 81.5%. The length of petiole, width of leaflet and length of fruit contributed more to showing delimitation among the species.

Tightening the Life-Cycle Construct: A Taxonomic Study of Growth Stage Configurations in High-Technology Organizations

1994 ◽  
Vol 18 (2) ◽  
pp. 5-29 ◽  
Author(s):  
Steven H. Hanks ◽  
Collin J. Watson ◽  
Erik Jansen ◽  
Gaylen N. Chandler
Keyword(s):  
Cluster Analysis ◽  
Life Cycle ◽  
Growth Stage ◽  
High Technology ◽  
Life Cycle Stage ◽  
Growth Stages ◽  
Taxonomic Study ◽  
Organization Context ◽  
Organization Life Cycle

Over the years much has been written about the organization life cycle, yet there has been remarkably little attention given to the underlying construct of a life-cycle stage. It is proposed in this study that each life-cycle stage consists of a unique configuration of variables related to organization context and structure. Cluster analysis is used to derive a taxonomy of growth stage configurations in a sample of 126 high-technology organizations. The derived configurations suggest a sequence of four growth stages.

A Numerical Taxonomic Study of Fucus Distichus (Phaeophyta)

1985 ◽  
Vol 65 (2) ◽  
pp. 433-459 ◽  
Author(s):  
E. L. Rice ◽  
A. R. O. Chapman
Keyword(s):  
North Atlantic ◽  
North Pacific ◽  
Taxonomic Study ◽  
The North ◽  
Fucus Distichus ◽  
Cool Temperate ◽  
Specific Variation ◽  
Specific Rank ◽  
The North Atlantic ◽  
Numerical Taxonomic Study

The genus Fucus L. is widely distributed through the cool temperate waters of the north Atlantic and north Pacific oceans. The very large number of sub-generic taxa (> 100) previously recognized was reduced by Powell (1963) to only 6 species. In his revision, Powell recognized F. distichus L. emend. Powell as the most variable of these. He classified the intra-specific variation in this species into 4 sub-species: F. distichus distichus, F. distichus anceps (Harv. et Ward ex. Carruthers) Powell, F. distichus evanescens (C.Ag) Powell and F. distichus edentatus (Pyl.) Powell. Because of reports that intermediate forms existed in Iceland (Jonsson, 1903) and the Faeröes (Börgesen, 1902), Powell (1957 a,b) decided to use sub-specific status rather than specific designation for these 4 taxa. However, within North America the 4 sub-species of F. distichus were often assigned specific rank (e.g. Taylor, 1957).

scholarly journals A Numerical Taxonomic Study of Anaerobic Gram-negative Bacilli Classified as Bacteroides ureolyticus Isolated from Patients with Non-gonococcal Urethritis

Microbiology ◽  
1986 ◽  
Vol 132 (11) ◽  
pp. 3137-3146 ◽  
Author(s):  
E. A. R. Fontaine ◽  
T. N. Bryant ◽  
D. Taylor-Robinson ◽  
S. P. Borriello ◽  
H. A. Davies
Keyword(s):  
Taxonomic Study ◽  
Gram Negative ◽  
Gonococcal Urethritis ◽  
Numerical Taxonomic Study

scholarly journals Different Concepts of Relevance in a Numerical Taxonomic Study

Nature ◽  
1968 ◽  
Vol 218 (5140) ◽  
pp. 492-492 ◽  
Author(s):  
THEODORE J. CROVELLO
Keyword(s):  
Taxonomic Study ◽  
Numerical Taxonomic Study
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