The depth at dorsal-fin origin, pelvic-fin ray length, preanal fin length, and dorsal-fin origin to anal-fin origin received the highest weight in the linear discriminant equation of the variation between the 2 species (Table 2) in the size-standardized morphospace
. This discriminant function correctly reclassified all but 2 individuals in a leave-one-out cross-validation (98.3% correct reclassification; Fig.
Schindel, "Unoccupied morphospace
and the coiled geometry of gastropods: architectural constraint or geometric covariation," in Causes of Evolution, R.
: phylogenetic constraints, biomechanical solutions, and ecological consequences.
The genus occupies conchological morphospace
somewhat intermediate between that of typical Euchelus and Granata.
Evolutionary walks through a land plant morphospace
. Journal of Experimental Botany 50: 39-52.
In the scientific analysis, a mathematical formula was used to determine and describe all possible egg shapes, and real eggs were then plotted into this "egg morphospace
"; in simple terms, as Vicens points out "dinosaur eggs tend to be more elongate and less rounded than birds eggs.
Algorithmic approaches to aid species' delimitation in multidimensional morphospace
. BMC Evolutionary Biology 10:175.
A preliminary intra-observer error analysis performed through repeated samples considering Procrustes distances and Principal Component Analysis showed only minor variations within the resulting morphospace
Here was a way of joining the genetic world I am more familiar with to my new-found interests, though I must admit that things got quite technical when the authors introduced a theoretical 3-D morphospace
. But basically, they focused on two architectural genes from Arabidopsis, TFL1 and LFY.
Our results agree with recent morphospace
disparity studies (Wills 1998 a,b).
We can all articulate the central error of such a perspective: since organisms help to create their own environments, adaptive peaks are built by interaction and undergo complex shifts as populations move in morphospace
; organisms cannot climb stable mountains of an engineer's fancy.
They think that in principle there is no way of answering this question.(18) So they think that the problem of 'quantifying morphospace
' is intractable, not for technical reasons, but because there are no facts to discover that exist independently of our classification schemes.