Results 71 to 80 of about 1,245,772 (241)

Working with laws, regularities and singularities in biology: The evolution of mammalian red blood cell size as a case study

open access: yesThe Anatomical Record, EarlyView.
Abstract Phylogenetic comparative methods have been used in recent literature to work with laws and test for regularities (evolutionary associations of quantitative features) and evolutionary singularities (features that evolved in a single taxon). We analyzed these uses epistemologically, taking the evolution of red‐blood‐cell mean corpuscular volume (
Jorge Cubo   +3 more
wiley   +1 more source

Modeling Height–Diameter Allometric Relationships of Dominant African Oak (Afzelia africana Sm) From West African Dry Savannas

open access: yesInternational Journal of Forestry Research
Tree height is an important ecological parameter for assessing biomass carbon accumulation rate and understanding the ontogenetic development of vascular plants.
Larba Hubert Balima   +5 more
doaj   +1 more source

A general allometric equation for estimating biomass in Acacia mangium plantations

open access: yes, 2012
Acacia Mangium Willd. is one of the most important tree species grown in commercial plantation in Monsoon Asia. Recently, the need for accurate information in the biomass in plantations has become more urgent, especially since the amount of carbon ...
Heriansyah, I.   +4 more
core   +1 more source

Tracheal chambers as a key innovation for high‐frequency emission in bat echolocation

open access: yesThe Anatomical Record, EarlyView.
Abstract Key innovations are pivotal for biodiversity and facilitating evolutionary success, enabling organisms' adaptation to various ecological niches through the diversification of phenotypic traits. In mammals, notable adaptations include evolving hypsodonty for grazing on grasses and, for bats, evolving echolocation and wing acquisition.
Nicolas L. M. Brualla   +7 more
wiley   +1 more source

BIOMASS ALLOMETRY FOR TREE SPECIES OF NORTHWESTERN MEXICO

open access: yesTropical and Subtropical Agroecosystems, 2010
Tree biomass plays a key role in sustainable forest management since it is the basis for estimating stocks and fluxes of several biogeochemical elements, the amount of energy stored in biomass, and other conventional goods and services.
Jose de Jesus Navar Chaidez
doaj  

CEPF Western Ghats Special Series: Length-weight and length-length relationship of three species of snakehead fish, Channa diplogramma, C. marulius and C. striata from the riverine reaches of Lake Vembanad, Kerala, India.

open access: yesJournal of Threatened Taxa, 2013
The length-weight relationship (LWR) and length-length relationships (LLR) of three snakehead fishes, Channa diplogramma, C. marulius and C. striata, exploited by small-scale fishers in the riverine reaches of Lake Vembanad, Kerala were studied using the
A. Ali, N. Dahanukar, R. Raghavan
doaj   +1 more source

Three‐dimensional digital analysis of musteloid masticatory muscle architecture

open access: yesThe Anatomical Record, EarlyView.
Musteloids span an enormous breadth of dietary modes within a single superfamily. In this study, we utilize digital dissection techniques to reconstruct the internal 3D anatomy of muscles within the musteloid feeding apparatus, and explore how dietary specializations might alter the size, orientation, and curvature of fascicles therein.
Cassidy E. Davis   +6 more
wiley   +1 more source

Allometric relationships between stem variables and leaf area in planted Eucalyptus nitens and naturally regenerating acacia dealbata [PDF]

open access: yes, 1999
Allometric relationships between stem variables and leaf area were determined for plantation Eucalyptus nitens (Deane et Maiden) Maiden and competing Acacia dealbata Link in 8-year-old and 4-year-old stands.
Beadle, Christopher L.   +2 more
core   +5 more sources

Evolutionary morphology of the haplorhine hamate

open access: yesThe Anatomical Record, EarlyView.
Abstract Primates adopt a variety of hand postures during an impressive diversity of locomotor and manipulative behaviors. Morphological research has found that elements of the hand skeleton, such as the hamate, hold key information for inferring hand use and locomotor kinematics in extinct species.
Laura E. Hunter   +4 more
wiley   +1 more source

Visiting dark sides of model simulation of carbon stocks in European temperate agricultural soils: allometric function and model initialization

open access: yes, 2020
Aims Predictions of medium to long-term changes in soil organic carbon (SOC) stocks involve simulation models with plant carbon (C) inputs estimated from crop yields using crop harvest indices and allometric scaling involving fixed root-to-shoot ratios ...
Katterer, T.   +8 more
core   +1 more source

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