Theoretical Ecology
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Effects of branching spatial structure and life history on the asymptotic growth rate of a population
Theoretical Ecology - Tập 3 - Trang 137-152 - 2009
The dendritic structure of a river network creates directional dispersal and a hierarchical arrangement of habitats. These two features have important consequences for the ecological dynamics of species living within the network. We apply matrix population models to a stage-structured population in a network of habitat patches connected in a dendritic arrangement. By considering a range of life hi......
Conditional dispersal, clines, and the evolution of dispersiveness
Theoretical Ecology - Tập 2 Số 2 - Trang 105-117 - 2009
A comparison of the dynamical impact of seasonal mechanisms in a herbivore–plant defence system
Theoretical Ecology - Tập 6 - Trang 225-239 - 2012
Plant defences can reduce herbivore fitness and may promote cycles in some herbivore populations. In this study, we model the interaction between plant defences and herbivores and include seasonal forcing, a ubiquitous environmental influence in natural systems. We compare the impacts of two different seasonal mechanisms on the dynamics of the herbivore–plant defence system. The first mechanism in......
Adaptive movement and food-chain dynamics: towards food-web theory without birth–death processes
Theoretical Ecology - Tập 9 - Trang 15-25 - 2015
Population density can be affected by its prey [resource] and predator [consumer] abundances through two different mechanisms: the alternation of birth [or somatic growth] or death rate and inter-habitat movement. While the food-web theory has traditionally been built on the former mechanism, the latter mechanism has formed the basis of a successful theory explaining the spatial distribution of or......
Correction to: Ocean zoning within a sparing versus sharing framework
Theoretical Ecology - Tập 11 - Trang 255-255 - 2018
The article “Ocean zoning within a sparing versus sharing framework,” written by Jennifer McGowan, Michael Bode, Matthew H. Holden, Katrina Davis, Nils C. Krueck, Maria Beger, Katherine L. Yates, and Hugh P. Possingham, was originally published electronically on the publisher’s internet portal.
The role of sex separation in neutral speciation
Theoretical Ecology - Tập 6 - Trang 213-223 - 2012
Neutral speciation mechanisms based on isolation by distance and assortative mating, termed topopatric, has recently been shown to describe the observed patterns of abundance distributions and species–area relationships. Previous works have considered this type of process only in the context of hermaphroditic populations. In this work, we extend a hermaphroditic model of topopatric speciation to p......
Size-based predictions of food web patterns
Theoretical Ecology - Tập 7 - Trang 23-33 - 2013
We employ size-based theoretical arguments to derive simple analytic predictions of ecological patterns and properties of natural communities: size-spectrum exponent, maximum trophic level, and susceptibility to invasive species. The predictions are brought about by assuming that an infinite number of species are continuously distributed on a size–trait axis. It is, however, an open question wheth......
Validation of null model tests using Neyman–Pearson hypothesis testing theory
Theoretical Ecology - Tập 1 Số 4 - Trang 241-248 - 2008
Patterns in intraspecific interaction strengths and the stability of food webs
Theoretical Ecology - Tập 9 - Trang 95-106 - 2014
A common approach to analyse stability of biological communities is to calculate the interaction strength matrix. Problematic in this approach is defining intraspecific interaction strengths, represented by diagonal elements in the matrix, due to a lack of empirical data for these strengths. Theoretical studies have shown that an overall increase in these strengths enhances stability. However, the......
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