The dynamics of stem and crown groups
Defining eukaryotes to dissect eukaryogenesis - Cell Press
of the eukaryote stem and crown groups. So far, so simple. How- ever, applying the stem- and total-group concepts to eukaryotes is unusual ...
Effects of Stem Density on Crown Architecture of Scots Pine Trees
Furthermore, the results from the nested two-level linear mixed-effect model showed that increment in most of the crown, stem, and growth attribute, when ...
Crown-Condition Classification: A Guide to Data Collection and ...
As the base of the live crown progresses toward the top of a tree, i.e., as the uncompacted live crown ratio declines, stem growth tends to decline. Uncompacted ...
from stem groups to crown groups, based on the compara- tive analysis of amino acid sequences in proteins common to the biological groups under consideration.
Inferring the mammal tree: Species-level sets of phylogenies ... - PLOS
... stem of a given crown group can only inform the minimum age of the next node back (sister of crown groups [186]). Calibrations were set ...
(PDF) Congruent phylogenetic and fossil signatures of mammalian ...
... crown ruminants and living groups, respectively. Dark green and light ... stem and crown living families combined— our fossil data include stem forms.
Intra- and interspecific competition differently influence growth and ...
We used a morphological classification for the assessment of stem form and crown shape as proposed by Börner et al. ... The latter group of species obviously ...
Crown Tetrapoda - GEOL431 - Vertebrate Paleobiology
Coates et al., 2008 favor restricting the name to the "crown group" - i.e. the node-based group defined as the last common ancestor of living members of the ...
Student Clubs | Student Government - Skidmore College
The Student Government Association (SGA) and The Office of Leadership Activities work in collaboration to support the efforts of nearly 100 registered student ...
Crown Construction, Leaf Dynamics, and Carbon Gain in Two ... - jstor
individual leaves on the main stem, to stem internodes, and to groups of leaves at the tips of individual side branches. Statistical analyses. Analyses of ...
Special Issue : Tree Crown Dynamics and Morphology - MDPI
Crown morphology determines the internal arrangement of foliage within the bulk canopy, which affects carbon assimilation and ultimately forest production.
Tree growth as affected by stem and crown structure
According to the standard of the International Union of Forest Research. Organizations (Johann 1993; Kramer and Akça 1995) we ... trend detection, ...
The cytoskeleton dynamics-dependent LINC complex in periodontal ...
Periodontal ligament stem cells (PDLSCs) are important seed cells in tissue engineering and clinical applications. They are the priority ...
The Influence of Ecosystem and Phylogeny on Tropical Tree Crown ...
Crowns of legumes were wider and more voluminous than those of other taxa. Thus, while MST can accurately describe the central tendency of tree crown size, ...
(PDF) Congruent phylogenetic and fossils signatures of mammalian ...
... crown ruminants and living groups, respectively. Dark green and light ... stem and crown living families combined— our fossil data include stem forms.
The Effect of Tree Crown Allometry on Community Dynamics in ...
If groups differ in these ratios, this could be ... Estimation of crown radii and crown projection area from stem size and tree position.
Professor Daniel J. Field | Department of Earth Sciences
I am a vertebrate palaeontologist interested in the evolutionary history of birds and other amniotes. Our group's research explores the vertebrate fossil ...
Dating Divergence Times in Phylogenies - DiVA portal
Crown groups of mod- ern birds diverged around the Cretaceous/Tertiary boundary. The stem group of. Page 37. 35. Neoaves diverged from its sister group ...
Diversity and Phylogeny of Marsupials and Their Stem Relatives ...
Marsupialia is the crown clade of the total clade Metatheria, which is sister to Eutheria (Table 1). Over 400 extant or recently extinct ...
Radiation and Extinction: Investigating Clade Dynamics in Deep Time
heterogeneous; it reveals some discontinuities at the stem/crown tetrapod transition, but considerable ... The four groups selected are ordinal ...