Results 61 to 70 of about 36,639 (306)

The development of the Silurian trilobite Aulacopleura koninckii reconstructed by applying inferred growth and segmentation dynamics: A case study in paleo-evo-devo [PDF]

open access: yes, 2017
Fossilized growth series provide rare glimpses into the development of ancient organisms, illustrating descriptively how size and shape changed through ontogeny.
Fusco, Giuseppe   +3 more
core   +2 more sources

A leaf phenomics approach for estimating belowground traits in North American licorice

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Selective breeding over thousands of years has prioritized aboveground yield, with little regard for changes belowground. Roots underpin plant growth and resilience, but our knowledge of these critical structures lags behind that of aboveground structures.
Zachary N. Harris   +5 more
wiley   +1 more source

Multivariate Allometry and Australopithecine Variation [PDF]

open access: yesEvolution, 1976
Allometry is differential relative growth, or simply a change in shape with increasing size. The concept of allometry is invoked by some students to explain the variation among early hominid fossils which others attribute to taxonomic variation. Brace (1963) and most recently Wolpoff (1973a) explain morphological shape differences between the "robust ...
openaire   +2 more sources

Quantitative assessment of masticatory muscles based on skull muscle attachment areas in Carnivora

open access: yesThe Anatomical Record, EarlyView.
Abstract Masticatory muscles are composed of the temporalis, masseter, and pterygoid muscles in mammals. Each muscle has a different origin on the skull and insertion on the mandible; thus, all masticatory muscles contract in different directions. Collecting in vivo data and directly measuring the masticatory muscles anatomically in various Carnivora ...
Kai Ito   +4 more
wiley   +1 more source

Morphometrics of Pseudorasbora parva (Schlegel, 1842) (Cyprinidae: Gobioninae), a species introduced into the Polish waters [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1998
A morphological analysis of 11 meristic and 25 plastic characters, based on 72 specimens of Pseudorasbora parva from carp ponds in the region of Ruda Sułowska (Barycz R. system, SW Poland).
J. Kotusz, A. Witkowski
doaj   +3 more sources

Allometric Trajectories and \u201cStress\u201d: A Quantitative Approach [PDF]

open access: yes, 2016
The term \u201cstress\u201d is an important but vague term in plant biology. We show situations in which thinking in terms of \u201cstress\u201d is profitably replaced by quantifying distance from functionally optimal scaling relationships between plant ...
Anfodillo, Tommaso   +4 more
core   +3 more sources

Implications of allometry [PDF]

open access: yesProceedings of the National Academy of Sciences, 2011
The thoughtful paper by Asner et al. (1) needs clarification. A major conclusion is that light detection and ranging (LiDAR)-based sampling combined with an allometric model of tree biomass that uses height measurements is significantly better than simply using the Intergovernmental Panel on Climate Change Tier 1 prescribed forest carbon values (2) for
David L. Skole   +2 more
openaire   +1 more source

The morphology of the oval window in Paranthropus robustus compared to humans and other modern primates

open access: yesThe Anatomical Record, EarlyView.
Abstract The oval window (OW) is an opening connecting the inner and middle ear. Its area has been shown to consistently scale with body mass (BM) in primates, and has been used alongside semi‐circular canal (SCC) size to differentiate Homo sapiens and fossil hominins, including Paranthropus robustus.
Ruy Fernandez, José Braga
wiley   +1 more source

Morphometric Studies on Subadult Liza subviridis and Sillago sihama from Sonmiani Bay (Miani Hor), Balochistan, Pakistan

open access: yesJournal of Bioresource Management, 2014
Length-weight relationship of Liza subviridis and Sillago sihama (Family: Mugilidae; Class: Pisces and Family: Sillaginidae; Class: Pisces) in subadults sampled from Somiani Bay Balochistan, Pakistan during 2002, 2003􀀃and 2006 was analyzed.
Muhammad A. Gondal   +2 more
doaj   +1 more source

Edge effects on tree architecture exacerbate biomass loss of fragmented Amazonian forests

open access: yesNature Communications, 2023
Habitat fragmentation could potentially affect tree architecture and allometry. Here, we use ground surveys of terrestrial LiDAR in Central Amazonia to explore the influence of forest edge effects on tree architecture and allometry, as well as forest ...
Matheus Henrique Nunes   +13 more
doaj   +1 more source

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