نتایج جستجو برای: allometric equations

تعداد نتایج: 241585  

Journal: :Proceedings. Biological sciences 2009
Ragna Franz Jürgen Hummel Ellen Kienzle Petra Kölle Hanns-Christian Gunga Marcus Clauss

Allometric equations are often used to extrapolate traits in animals for which only body mass estimates are known, such as dinosaurs. One important decision can be whether these equations should be based on mammal, bird or reptile data. To address whether this choice will have a relevant influence on reconstructions, we compared allometric equations for birds and mammals from the literature to ...

2012

Department of Animal Science,Faculty of Agriculture,University of Uyo, Uyo, Akwa Ibom State, Nigeria A total of 40 New Zealand white rabbits were used in a study where prediction models were developed for predicting live weight and evaluating the carcass. In the study, six body measurements namely, body length, thigh circumference, shank length, chest width, body circumference and girth were de...

2003
Jennifer C. Jenkins David C. Chojnacky Linda S. Heath Richard A. Birdsey

Estimates of national-scale forest carbon (C) stocks and fluxes are typically based on allometric regression equations developed using dimensional analysis techniques. However, the literature is inconsistent and incomplete with respect to large-scale forest C estimation. We compiled all available diameter-based allometric regression equations for estimating total aboveground and component bioma...

2006
Xiaoyang Zhang Shobha Kondragunta

[1] Spatially-distributed forest biomass components are essential to understand carbon cycle and the impact of biomass burning emissions on air quality. We estimated the density of forest biomass components (foliage biomass, branch biomass, and aboveground biomass) at a spatial resolution of 1 km across the Contiguous United States using foliage-based generalized allometric models and Moderate-...

2013
Lubomir D. Lashev Anelyia M. Haritova

Submitted: Nov 23, 2012; Accepted: Jan 5, 2013; Published: Aug 5, 2013 Abstract: Allometric analysis of the total body clearance (Cl ), steady-state volume of distribution (V ) and B ss elimination half-life (t ) based on the literature data in fish species was performed for oxolinic acid, flumequine, 1/2 enrofloxacin. Values of Cl and V show allometric dependence on body weight but values of t...

2002
Jayanth R. Banavar John Damuth Amos Maritan Andrea Rinaldo

Recently, West et al. claimed to derive a general quantitative model based on fundamental principles for the allocation of metabolic energy between maintenance of existing tissue and the production of new biomass, and in addition claimed to derive a single, parameterless universal curve that describes the growth of many species. They further claimed that their model of the 3/4 exponent for the ...

Journal: :Ecological applications : a publication of the Ecological Society of America 2012
G Vieilledent R Vaudry S F D Andriamanohisoa O S Rakotonarivo H Z Randrianasolo H N Razafindrabe C Bidaud Rakotoarivony J Ebeling M Rasamoelina

Allometric equations allow aboveground tree biomass and carbon stock to be estimated from tree size. The allometric scaling theory suggests the existence of a universal power-law relationship between tree biomass and tree diameter with a fixed scaling exponent close to 8/3. In addition, generic empirical models, like Chave's or Brown's models, have been proposed for tropical forests in America ...

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