English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The idea of a metapopulation has become canonical in ecology. Its originalmean field form provides the important intuition that migration and extinctioninteract to determine the dynamics of a population composed of subpopulations.From its conception, it has been evident that the very essence of themetapopulation paradigm centers on the process of local extinction. We notethat there are two qualitatively distinct types of extinction, gradual andcatastrophic, and explore their impact on the dynamics of metapopulationformation using discrete iterative maps. First, by modifying the classiclogistic map with the addition of the Allee effect, we show that catastrophiclocal extinctions in subpopulations are a pre-requisite of metapopulationformation. When subpopulations experience gradual extinction, increasedmigration rates force synchrony and drive the metapopulation below the Alleepoint resulting in migration induced destabilization of the system acrossparameter space. Second, a sawtooth map (an extension of the Bernoulli bitshift map) is employed to simultaneously explore the increasing and decreasingmodes of population behavior. We conclude with four generalizations. 1. At lowmigration rates, a metapopulation may go extinct faster than completelyunconnected subpopulations. 2. There exists a gradient between stablemetapopulation formation and population synchrony, with critical transitionsfrom no metapopulation to metapopulation to synchronization, the latterfrequently inducing metapopulation extinction. 3. Synchronization patternsemerge through time, resulting in synchrony groups and chimeric populationsexisting simultaneously. 4. There are two distinct mechanisms ofsynchronization: i. extinction and rescue and, ii.) stretch reversals in amodification of the classic chaotic stretching and folding.

The interplay of extinction and synchrony in the dynamics of metapopulation formation