Of Mice and Men: What Rodent Populations Can Teach Us about Complex Spatial Dynamics

1988 ◽  
Vol 20 (1) ◽  
pp. 99-109 ◽  
Author(s):  
H Couclelis
Keyword(s):  
Population Dynamics ◽  
Complex Systems ◽  
Cellular Automaton ◽  
Chaotic System ◽  
Spatial Dynamics ◽  
Human Geography ◽  
System Behavior ◽  
Rodent Population ◽  
Rodent Populations ◽  
Scientific Fields

Models of complex systems need not be themselves complex, let alone complicated. To illustrate this important point, a very simple cellular automaton model of rodent population dynamics is used to generate a wide variety of different spatiotemporal structures corresponding to different forms of equilibrium, cyclical, quasi-cyclical, and chaotic system behavior. The issue of complexity as it pertains to a number of different contemporary scientific fields is then discussed, and in particular its implications for prediction. The discussion ends with some general reflexions about modeling in human geography.

scholarly journals Population cycles and outbreaks of small rodents: ten essential questions we still need to solve

Oecologia ◽  
2020 ◽  
Author(s):  
Harry P. Andreassen ◽  
Janne Sundell ◽  
Fraucke Ecke ◽  
Stefan Halle ◽  
Marko Haapakoski ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Large Amplitude ◽  
Driving Forces ◽  
Population Cycles ◽  
Small Rodent ◽  
Small Rodents ◽  
Rodent Population ◽  
The World ◽  
Essential Questions ◽  
Rodent Populations

AbstractMost small rodent populations in the world have fascinating population dynamics. In the northern hemisphere, voles and lemmings tend to show population cycles with regular fluctuations in numbers. In the southern hemisphere, small rodents tend to have large amplitude outbreaks with less regular intervals. In the light of vast research and debate over almost a century, we here discuss the driving forces of these different rodent population dynamics. We highlight ten questions directly related to the various characteristics of relevant populations and ecosystems that still need to be answered. This overview is not intended as a complete list of questions but rather focuses on the most important issues that are essential for understanding the generality of small rodent population dynamics.

scholarly journals Rodent host population dynamics drive zoonotic Lyme Borreliosis and Orthohantavirus infections in humans in Northern Europe

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mahdi Aminikhah ◽  
Jukka T. Forsman ◽  
Esa Koskela ◽  
Tapio Mappes ◽  
Jussi Sane ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Lyme Borreliosis ◽  
Bank Vole ◽  
Myodes Glareolus ◽  
Northern Europe ◽  
Time Lags ◽  
Rodent Population ◽  
Vole Cycles ◽  
Infection Dynamics ◽  
Abundance Fluctuations

AbstractZoonotic diseases, caused by pathogens transmitted between other vertebrate animals and humans, pose a major risk to human health. Rodents are important reservoir hosts for many zoonotic pathogens, and rodent population dynamics affect the infection dynamics of rodent-borne diseases, such as diseases caused by hantaviruses. However, the role of rodent population dynamics in determining the infection dynamics of rodent-associated tick-borne diseases, such as Lyme borreliosis (LB), caused by Borrelia burgdorferi sensu lato bacteria, have gained limited attention in Northern Europe, despite the multiannual abundance fluctuations, the so-called vole cycles, that characterise rodent population dynamics in the region. Here, we quantify the associations between rodent abundance and LB human cases and Puumala Orthohantavirus (PUUV) infections by using two time series (25-year and 9-year) in Finland. Both bank vole (Myodes glareolus) abundance as well as LB and PUUV infection incidence in humans showed approximately 3-year cycles. Without vector transmitted PUUV infections followed the bank vole host abundance fluctuations with two-month time lag, whereas tick-transmitted LB was associated with bank vole abundance ca. 12 and 24 months earlier. However, the strength of association between LB incidence and bank vole abundance ca. 12 months before varied over the study years. This study highlights that the human risk to acquire rodent-borne pathogens, as well as rodent-associated tick-borne pathogens is associated with the vole cycles in Northern Fennoscandia, yet with complex time lags.

Population Dynamics of a Seed Feeding Bug, Lygaeus Equestris. 1. Habitat Patch Structure and Spatial Dynamics

Oikos ◽  
1990 ◽  
Vol 58 (2) ◽  
pp. 199 ◽  
Author(s):  
Christer Solbreck ◽  
Birgitta Sillén-Tullberg ◽  
Birgitta Sillen-Tullberg
Keyword(s):  
Population Dynamics ◽  
Spatial Dynamics ◽  
Habitat Patch ◽  
Patch Structure ◽  
Lygaeus Equestris

scholarly journals Chaos and bifurcation in the controlled chaotic system

2018 ◽  
Vol 16 (1) ◽  
pp. 1255-1265
Author(s):  
Yongjian Liu ◽  
Xiezhen Huang ◽  
Jincun Zheng
Keyword(s):  
Periodic Solution ◽  
Normal Form ◽  
Chaotic System ◽  
Variable Parameter ◽  
System Behavior ◽  
Normal Form Theory ◽  
Controlled System ◽  
Hybrid Strategy ◽  
Form Theory ◽  
Bifurcating Periodic Solution

AbstractIn this paper, chaos and bifurcation are explored for the controlled chaotic system, which is put forward based on the hybrid strategy in an unusual chaotic system. Behavior of the controlled system with variable parameter is researched in detain. Moreover, the normal form theory is used to analyze the direction and stability of bifurcating periodic solution.

Synthesis of Rodent Population Dynamics

2014 ◽  
pp. 241-252
Author(s):  
Charles J. Krebs
Keyword(s):  
Population Dynamics ◽  
Rodent Population

scholarly journals Consequences of barriers and changing seasonality on population dynamics and harvest of migratory ungulates

2020 ◽  
Vol 13 (4) ◽  
pp. 595-605
Author(s):  
Bram Van Moorter ◽  
Steinar Engen ◽  
John M. Fryxell ◽  
Manuela Panzacchi ◽  
Erlend B. Nilsen ◽  
...  
Keyword(s):  
Climate Change ◽  
Population Dynamics ◽  
Population Size ◽  
Spatial Dynamics ◽  
Infrastructure Development ◽  
Negative Effects ◽  
Behavioral Avoidance ◽  
Animal Populations ◽  
The Difference ◽  
Global Threat

AbstractMany animal populations providing ecosystem services, including harvest, live in seasonal environments and migrate between seasonally distinct ranges. Unfortunately, two major sources of human-induced global change threaten these populations: climate change and anthropogenic barriers. Anthropogenic infrastructure developments present a global threat to animal migrations through increased migration mortality or behavioral avoidance. Climate change alters the seasonal and spatial dynamics of resources and therefore the effects of migration on population performance. We formulated a population model with ideal-free migration to investigate changes in population size and harvest yield due to barriers and seasonal dynamics. The model predicted an increasing proportion of migrants when the difference between areas in seasonality or carrying capacity increased. Both migration cost and behavioral avoidance of barriers substantially reduced population size and harvest yields. Not surprisingly, the negative effects of barriers were largest when the population benefited most from migration. Despite the overall decline in harvest yield from a migratory population due to barriers, barriers could result in locally increased yield from the resident population following reduced competition from migrants. Our approach and results enhance the understanding of how global warming and infrastructure development worldwide may change population dynamics and harvest offtake affecting livelihoods and rural economies.

The Role of Dispersal in Models of Small Rodent Population Dynamics

Oikos ◽  
1988 ◽  
Vol 52 (2) ◽  
pp. 219 ◽  
Author(s):  
Joanna Gliwicz
Keyword(s):  
Population Dynamics ◽  
Small Rodent ◽  
Rodent Population

AN INTRODUCTION TO GENERAL EVOLUTION THEORY

1994 ◽  
Vol 02 (01) ◽  
pp. 105-110 ◽  
Author(s):  
ERVIN LASZLO
Keyword(s):  
General Theory ◽  
Complex Systems ◽  
Nonlinear Evolution ◽  
Scientific Discipline ◽  
Evolution Theory ◽  
Social Phenomena ◽  
New Developments ◽  
Theory Of Evolution ◽  
The Cross ◽  
Scientific Fields

The study of evolution extends beyond any given scientific discipline, to embrace the sequential but nonlinear evolution of complex systems in the cosmos and in the biosphere. The exploration of a truly general theory of evolution has major consequences for our understanding of physical, biological and human-social phenomena. New developments in various scientific fields, most notably in the systems sciences, provide the basis for the investigation of the cross-disciplinary laws and regularities that furnish the premises of general evolution theory.

The Role of Mortality in Models of Small Rodent Population Dynamics

Oikos ◽  
1988 ◽  
Vol 52 (2) ◽  
pp. 215 ◽  
Author(s):  
Steve Mihok
Keyword(s):  
Population Dynamics ◽  
Small Rodent ◽  
Rodent Population

Breeding success of the Eurasian eagle owl (Bubo bubo) and rodent population dynamics

2016 ◽  
Vol 43 (8) ◽  
pp. 851-861 ◽  
Author(s):  
A. V. Andreychev ◽  
A. S. Lapshin ◽  
V. A. Kuznetsov
Keyword(s):  
Population Dynamics ◽  
Breeding Success ◽  
Bubo Bubo ◽  
Rodent Population ◽  
Eagle Owl
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