Sigmoid growth models, such as the logistic, Gompertz and Richards' models, are widely
used to study population dynamics ranging from microscopic populations of cancer cells, to …

This paper advances a unified approach to the modeling of sigmoid organismal growth.
There are numerous studies on growth, and there have been several proposals and …

A central problem in population ecology is to use time series data to estimate the form of
density dependence in the per capita growth rate (pgr). This is often accomplished with …

Biological growth is driven by numerous functions, such as hormones and mineral nutrients,
and is also involved in various ecological processes. Therefore, it is necessary to accurately …

The growth of populations is of interest in a broad variety of fields, such as epidemiology,
economics or biology. Although a large variety of growth models are available in the …

Abstract The four-parameter Unified Richards model has been applied to the growth of
different animal taxa. Traditionally researchers of animal growth have favoured three …

Of the many mathematical models proposed for capturing the dynamics of plant growth, the
beta sigmoid function (BSF) is the newest and consequently is not well known to ecologists …

Several new growth models have been proposed to account for the life‐history trade‐offs
that occur when indeterminately growing species allocate energy between somatic growth …

Nee et al.(1994) presented likelihood equations for estimating speciation and extinction
rates based on phylogenies of only extant species; in particular their method can infer …

Throughout the life sciences, biological populations undergo multiple phases of growth,
often referred to as biphasic growth for the commonly encountered situation involving two …