The practice of scaling or normalizing physiological variables (Y) by dividing the variable by an appropriate body size variable (X) to produce what is known as a "per ratio standard" (Y/ X), has come under strong criticism from various authors. These authors propose an alternative regression standard based on the linear regression of (Y) on (X) as the predictor variable. However, if linear reg...

Investigations in the past two decades have shown the utility of the Newtonian model of heat loss from homoiotherms which was established in the biological literature by Scholander et al. (1950a, b, c). The stimulative effect of those papers is seen in a proliferation of thermoregulatory studies (for reviews see Bartholomew, 1968; Dawson & Hudson, 1970). Sufficient data'have been generated from...

Wei Sheng ZENG Shou Zheng TANG Zeng, Wei Sheng. Academy of Forest Inventory and Planning , State Forestry Administration, #18 Hepingli East Street, East District, Beijing 100714, China. E-mail address: [email protected]. Tang, Shou Zheng. Institute of Forest Resources Information, Chinese Academy of Forestry, #1 Dongxiaofu, Xiangshan Street, Haidian District, Beijing 100091, China. E-mail a...

Allometric growth is found in many tagging systems online. That is, the number of new tags (T ) is a power law function of the active population (P ), or T ∼ P γ (γ 6= 1). According to previous studies, it is the heterogeneity in individual tagging behavior that gives rise to allometric growth. These studies consider the power-law distribution model with an exponent β, regarding 1/β as an index...

With the development of national-scale forest biomass monitoring work, accurate estimation of forest biomass on a large scale is becoming an important research topic in forestry. In this study, the stem wood, branches, stem bark, needles, roots and total biomass models for larch were developed at the regional level, using a general allometric equation, a dummy variable model, a mixed effects mo...

The predominance of molar teeth in fossil hominin assemblages makes the patterning of molar shape variation a topic of bioanthropological interest. Extant models are the principal basis for understanding dental variation in the fossil record. As the sister taxon to the hominin clade, Pan is one such model and the only widely accepted extant hominid model for both interspecific and intraspecific...

Several phenomenological descriptions, such as the von Bertalanffy growth model, have been widely used to describe size-at-age and individual growth across a diverse range of organisms. However, for modelling life histories, as opposed to just growth, biologically and mechanistically meaningful growth models, based on allocation decisions, have become increasingly important. This is because fit...