scholarly journals Ecophenotypic variation in <i>Mutilus pumilus</i> (Ostracoda) from Australia, studied by canonical variate analysis and tensor biometrics

1988 ◽  
Vol 7 (1) ◽  
pp. 11-20 ◽  
Author(s):  
R. A. Reyment ◽  
F. L. Bookstein ◽  
K. G. Mckenzie ◽  
S. Majoran

Abstract. Ecophenotypic variation in the ornament of living Mutilus pumilus from Australia may be related to seasonal temperature differences along the southern coasts. Standard methods of statistical analysis identify geographical differences in the morphology of the data, but are inadequate for analysing the complex patterns of shape variability in the species. Geometric morphometric methods localised the more important changes in shape in both the outline of the shell and in the configuration of the ornament.

1984 ◽  
Vol 62 (12) ◽  
pp. 2519-2526 ◽  
Author(s):  
C. G. van Zyll de Jong

Crania and bacula of five taxa of small-footed bats of the leibii group, comprising two currently recognised species, Myotis californicus and M. leibii, were studied to elucidate their interrelationships. Canonical variate analysis of 14 cranial measurements shows the existence of three distinct nonoverlapping clusters corresponding to (i) M. californicus, (ii) M. I. ciliolabrum and M. I. melanorhinus, and (iii) M. I. leibii. The results of the morphometric analyses do not support the claim that M. I. leibii and M. I. melanorhinus intergrade in Oklahoma. The taxonomic interpretation of the results is that the western forms of M. leibii represent a separate species M. ciliolabrum (Mcrriam). The bacula of the taxa studied lack distinctive characters that would allow one to discriminate between the species of the leibii group.


2015 ◽  
Vol 52 (1) ◽  
pp. 23-35 ◽  
Author(s):  
Dariusz Kayzer ◽  
Anna Budka ◽  
Klaudia Borowiak ◽  
Janina Zbierska ◽  
Marta Lisiak

SummaryTropospheric ozone affects plant growth and the yield of main pasture species all around the world. Experiments are usually performed in fully controlled conditions; the number of investigations in ambient air conditions is still limited. Moreover, most investigations of the effect of ozone on white clover biomass production consider one series after the other, including a period without leaves. Hence, based on the recommendations, additional series are proposed and studied here. The responses of sensitive and resistant white clover clones are presented and compared using multivariate analysis of variance and profile analysis. The canonical variate analysis used here makes it possible to present the profile comparison of dry matter content of white clover graphically in Euclidean space. The investigations revealed a difference in response between clones and the necessity of using the additional series.


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