The interplay between immigration and local population dynamics in metapopulations

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Ovaskainen , O 2017 , ' The interplay between immigration and local population dynamics in metapopulations ' , Annales Zoologici Fennici , vol. 54 , no. 1-4 , pp. 113-121 . https://doi.org/10.5735/086.054.0111

Title: The interplay between immigration and local population dynamics in metapopulations
Author: Ovaskainen, Otso
Contributor organization: Biosciences
Otso Ovaskainen / Principal Investigator
Centre of Excellence in Metapopulation Research
Date: 2017-04
Language: eng
Number of pages: 9
Belongs to series: Annales Zoologici Fennici
ISSN: 0003-455X
DOI: https://doi.org/10.5735/086.054.0111
URI: http://hdl.handle.net/10138/225739
Abstract: Stochastic models of closed populations predict eventual extinction with certainty. Consequently, their behavior is often characterized by the quasi-stationary state, i.e. the long-term distribution of population sizes conditional on non-extinction. In contrast, models which allow for immigration exhibit a regular stationary state. At the limit of a low immigration rate, a population is expected to alternate between three states: the quasi- stationary state of a closed population, the extinction state, and the transient phase during which a newly arrived immigrant either establishes a new population or fails to do so. We develop this argument into a simple and intuitive framework that can be used to assess the effect of immigration in a general class of population models. We exemplify the framework for models in which immigrants arrive either singly or in groups, for models with an Allee effect, for models with environmental stochasticity, and for models leading to metapopulation dynamics.
Subject: QUASI-STATIONARY DISTRIBUTIONS
BIOLOGICAL INVASIONS
EXTINCTION TIMES
LOGISTIC MODEL
STOCHASTICITY
PERSISTENCE
VIABILITY
1181 Ecology, evolutionary biology
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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