Results 81 to 90 of about 9,022 (276)

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

The Anatomical Record, EarlyView.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer, Christian Cooper, Jingmai O'Connor   +2 more
wiley   +1 more source

Allometric height-diameter equations for Pinus pseudostrobus Lindl

Ecosistemas y Recursos Agropecuarios, 2018
Silvicultural practices used for forest management in the Indigenous Community of Nuevo San Juan Parangaricutiro (CINSJP for its initials in Spanish), Michoacan, Mexico, are important for the sustainability of its woodlands. For this purpose, techniques that provide reliable and current quantitative estimates are required.
Jonathan Hernández-Ramos, J. Jesús García-Magaña, Adrián Hernández-Ramos, Xavier García-Cuevas, G. Geraldine García-Espinoza, H. Jesús Muñoz-Flores, J. Trinidad Sáenz-Reyes   +6 more
openaire   +3 more sources

Allometric Equation for Predicting the Aboveground Biomass of Timber Trees and Bamboos [PDF]

, 2014
近年來自簽署京都議定書後，木本植物及森林對於CO2吸存的貢獻成為矚目的焦點，森林生物量的研究也再度引起重視。因為森林生物量為計算碳貯存量的基礎，生物量和碳貯存量二者間具有密切的相關性，碳貯存量可透過生物量之碳含量百分比(PCC)或碳濃度來計算碳貯存量，目前這類研究被廣泛地應用於森林碳貯存量的估算。生物量的推估對森林碳貯存量的估算而言是最重要的工作，目前多以建立胸高直徑（DBH）與個別林木生物量的關係式推導，並廣泛被應用在森林生物量的推估。過去多數生物量研究所建立的DBH與生物量相對關係式 ...
孫正華, Sun, Cheng-Hua
core  

Allometric study of functional fitness of children and adolescents in a rural area of Mozambique.DOI: http://dx.doi.org/10.5007/1980-0037.2012v14n5p507

Revista Brasileira de Cineantropometria e Desempenho Humano, 2012
Few studies in Africa have investigated the physical performance of children using the allometric method. This study evaluated the functional fitness of children and adolescents in a rural area of Mozambique using the contrast between theoretical models ...
Luciano Basso, Antonio Prista, Leonardo Nhantumbo, Silvio Saranga, José Maia   +4 more
doaj  

Integrating whole‐bone and regional analyses to understand human scapular growth

The Anatomical Record, EarlyView.
Abstract This study investigates ontogenetic changes in human scapular morphology using three‐dimensional geometric morphometrics with whole‐bone and region‐specific analyses. The aim is to evaluate whether the scapula follows a regular developmental pattern and whether its functionally distinct components, the scapular spine (SS) and glenoid fossa ...
Azahara Salazar‐Fernández, José Miguel Carretero, Laura Rodríguez, Rebeca García‐González   +3 more
wiley   +1 more source

Allometric deviations of plasma carotenoids in raptors [PDF]

, 2014
Because large species ingest proportionally less food than small ones, it may be predicted that they should incorporate relatively fewer carotenoids to a proportionally equal volume of blood. However, some species may increase their levels of circulating
Blanco, Guillermo, Hornero Méndez, Dámaso, Hiraldo, Fernando, Bautista-Sopelana, Luis M., Lambertucci, Guillermo W., Sánchez-Zapata, José A., Donázar, José A., Wiemeyer, Guillermo, Blaco, Guillermo, Bautista, Luis M., Hornero-Méndez, Dámaso, Sanchez Zapata, José A., Lambertucci, Sergio Agustin   +12 more
core   +1 more source

A second species of non‐crocodyliform crocodylomorph from the Late Triassic fissure deposits of southwestern UK: Implications for locomotory ecological diversity in Saltoposuchidae

The Anatomical Record, EarlyView.
Abstract The Late Triassic–Early Jurassic fissures of the Bristol Channel area (southwest England and south Wales) are renowned for their diverse vertebrate faunas. These assemblages have yielded an array of predominantly small‐bodied forms that are crucial to our understanding of the early evolution of several major tetrapod clades.
Ewan H. Bodenham, Stephan N. F. Spiekman, Susannah C. R. Maidment, Paul Upchurch, Philip D. Mannion   +4 more
wiley   +1 more source

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

International 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, Fabrice Ouoba, Blandine Marie Ivette Nacoulma, Philippe Bayen, Moussa Ganamé, Adjima Thiombiano   +5 more
doaj   +1 more source

Previously undocumented regional variability in crab‐eating macaque skull sexual dimorphism and its implications for biological and morphometric studies

The Anatomical Record, EarlyView.
Abstract In a large sample of adult crab‐eating macaques, we quantified sexual dimorphism in size, shape, and covariance across the whole skull and among anatomical regions of the cranium and mandible. All regions showed significant mean sex differences, but the magnitude of size and shape dimorphism varied substantially.
Andrea Cardini, Paul O'Higgins
wiley   +1 more source

Validation and refinement of allometric equations for roots of northern hardwoods

Canadian Journal of Forest Research, 2007
The allometric equations developed by Whittaker et al. (1974. Ecol. Monogr. 44: 233–252) at the Hubbard Brook Experimental Forest have been used to estimate biomass and productivity in northern hardwood forest systems for over three decades. Few other species-specific allometric estimates of belowground biomass are available because of the difficulty ...
Vadeboncoeur, Matthew A., Hamburg, Steven P., Yanai, Ruth D.   +2 more
openaire   +3 more sources