SMALL‐RODENT DYNAMICS AND PREDATION
The predation hypothesis is reviewed and it is considered it unlikely that the phenotypic and genotypic composition of pop- ulations would be instrumental for generating the broad patterns in rodent oscillations, which may have some population-dynamic consequences.
Translating Foraging Movements in Heterogeneous Environments into the Spatial Distribution of Foragers
- P. Turchin
- 1 August 1991
The proposed framework is based on the " diffusion—approximation" procedure developed by Patlak, which translates a probabilistic description of the pattern of individual movements into a partial differential model describing the population redistribution in a patchy habitat.
Rarity of density dependence or population regulation with lags?
- P. Turchin
- Environmental ScienceNature
- 1 April 1990
The evaluation of the evidence for delayed density dependence in population dynamics of 14 forest insects and the effect of regulation lags on the likelihood of detecting direct density dependence suggest that traditional analyses will not detect density-dependent regulation in populations that are characterized by lags and complex dynamic behaviour.
Population Regulation" Old Arguments and a New Synthesis
- P. Turchin
Population oscillations of boreal rodents: regulation by mustelid predators leads to chaos
The results suggest that the multiannual oscillations of rodent populations in Fennoscandia are due to delayed density dependence imposed by mustelid predators, and are chaotic.
Complex Dynamics in Ecological Time Series
It is concluded that the complete spectrum of dynamical behaviors, ranging from exponential stability to chaos, is likely to be found among natural populations.
Chaos in a Noisy World: New Methods and Evidence from Time-Series Analysis
It is argued that strict separation between chaotic and stochastic dynamics in ecological systems is unnecessary and misleading, and a more comprehensive approach is presented for systems subject to Stochastic perturbations.
WHY DO POPULATIONS CYCLE? A SYNTHESIS OF STATISTICAL AND MECHANISTIC MODELING APPROACHES
This paper quantifies hypotheses by writing mathematical models that embody the interactions and forces that might cause cycles of population cycles, using both long-term population time series and the often-rich observational and experimental data on the ecology of the species in question.
An Empirically Based Model for Latitudinal Gradient in Vole Population Dynamics
The striking success of the model at predicting the shifts in amplitude and stability along the geographical gradient in northern Europe provides strong support for the key role of specialist and generalist predators in vole population dynamics.