(1995b) The allometric scaling of density and body mass: A nonlinear rela- tionship for terrestrial mammals. Am. Nat. 145, 704±727.Silva, M. & Downing, J.A. 1995. The Allometric Scaling of Density and Body Mass: A Nonlinear Relationship for Terrestrial Mammals. The American Naturalist,...
Besides, scaling projections are sensitive to parameter fluctuation. Thus the suitability of the addressed allometric approximations requires clarification. Results The considered proxies produced accurate indirect assessments of observed values. Only parameter estimates fitted from raw data using nonlinear ...
For all plots, the y axis is the altitude from 2900 to 3500 m. Line in each plot represents quadratic polynomial model fit and the shaded area represents its 95% confidence limits. 3.3. Scaling relationships response to different altitudes and slope aspects There were stronger correlative ...
We analyze the occurrence frequencies of over 15 million words recorded in millions of books published during the past two centuries in seven different languages. For all languages and chronological subsets of the data we confirm that two scaling regimes
In part, this is because it is unclear the extent to which the elements of log-linear scaling relationships—the intercept or mean trait size and the slope—can evolve independently. Here, using the wing–body size scaling relationship in Drosophila melanogaster as an empirical model, we use ...
4. These scaling relationships suggest that nonlinear interaction strengths can be predicted by knowledge of predator and prey body masses. Our results imply that predators of intermediate size impose stronger per capita top-down interaction strengths on a prey than smaller or larger predators. Mor...
Biomass models were fitted using allometric equations, a specific form of nonlinear equations, expressed as: $$Y = \beta_{0 } \times X^{{\beta_{1} }} + \varepsilon$$ (3) Therefore, the general form of allometric mixed-effects model is expressed as: ...
volume is large. Due to the very small upper bound onathat is associated with large values ofb, the numerical algorithm (fmincon) did not reliably return a local minimum for this model whenbwas large. For this reason, we impose an upper bound of 2 onb. The lower bound onbis set to ...
Via nonlinear analysis, we investigate the dynamical behavior of the disease for different levels of seasonality in the transmission rate and for different values of the pathogen basic reproduction number (R0) over a broad range of body sizes. While the unforced SEI model exhibits long‐term epi...
Quarter-power scaling lawNonlinear mixed-effects modelsEquivalence testingThe use of the allometric model $$y = \\\beta x ^{\\\alpha }$$ y = β x α to describe the relative growth of morphological traits of trees is a source of contention in ecology. This is particularly so in a spec...