Results 1 to 10 of about 19,060 (161)

Extinction debt in local habitats: quantifying the roles of random drift, immigration and emigration [PDF]

open access: yesRoyal Society Open Science, 2020
We developed a time-dependent stochastic neutral model for predicting diverse temporal trajectories of biodiversity change in response to ecological disturbance (i.e. habitat destruction) and dispersal dynamic (i.e. emigration and immigration). The model
Yongbin Wu   +4 more
doaj   +1 more source

Factors influencing hibernation in Harmonia axyridis: Role of the environment and interval timer

open access: yesFrontiers in Ecology and Evolution, 2022
From 2014 to 2022, we investigated the length of hibernation in a population of the invasive ladybird Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) in Central Europe. Adults were collected during the autumn immigration to overwintering sites and
Alois Honek   +2 more
doaj   +1 more source

A Note on Generalization of the Simplest Time-Dependent Discrete Markov Process: Linear Growth Process With Immigration-Emigration

open access: yesJournal of Statistical Theory and Applications (JSTA), 2021
Lineargrowth process with immigration and emigration is the general model in the study of population in biological and ecological systems, and their transient analysis is the most important factor in the understanding of the structural behavior of such ...
Bijoy Kumar Pradhan   +2 more
doaj   +1 more source

France, a Country of Immigration… and Emigration [PDF]

open access: yesPopulation & Avenir, 2016
Calais, Ventimiglia, humanitarian center for migrants in Paris, CAD (reception and integration centers), CADA (reception centers for asylum seekers) ... The migration question in France is very present in the news and Numbers often doubtful, in one direction or another. Let us try to clarify the understanding of the French migratory system.]
Gérard-François Dumont, Sylvie Vanston
openaire   +3 more sources

HOW HAS COVID-19 AFFECTED MIGRATION OF LITHUANIAN POPULATION?

open access: yesეკონომიკური პროფილი, 2022
The paper aims to examine the role of COVID-19 pandemic on the population migration in Lithuania. A situation analysis using the newest available migration data was deployed.
Gindrute Kasnauskiene   +1 more
doaj   +1 more source

GDP Growth and Unsaturated Demand on Labour Markets: Is the Visegrad Group Ready for an Increased Immigration?

open access: yesEkonomista, 2021
Due to unprecedented economic growth after the EU accession, four post-communist economies: Czechia, Hungary, Poland, and Slovak Republic (Visegrad Group, V4) have suffered from unsaturated demand in their labour markets.
MICHAŁ SCHWABE
doaj   +1 more source

REALITIES OF THE MIGRATION PROCESS IN RUSSIA: QUANTITATIVE “PROS” AND QUALITATIVE “CONS”

open access: yesRUDN Journal of Political Science, 2019
The article discusses the features of immigration and emigration flows in Russia, their quality indicators. There is a mismatch in the distribution of labor migrants in the country regions, as well as the intellectual and professional characteristics of ...
Tatiana V Karadje, Dina V Tombu
doaj   +1 more source

Migration in Southern Europe since 1945: The Entanglement of many Mobilities

open access: yesRevue Européenne des Migrations Internationales, 2018
“Space” – in which the phenomenon of migration takes place – is not the only category to be rethought and relocated in migration studies. Another key issue is “time”, or rather a periodisation.
Michele Colucci, Stefano Gallo
doaj   +1 more source

How much would reduced emigration mitigate ageing in Norway?

open access: yesVienna Yearbook of Population Research, 2023
Population ageing is a topic of great concern in many countries. To counteract the negative effects of ageing, increased fertility or immigration are often proposed as demographic remedies. Changed emigration is, however, rarely mentioned.
Marianne Tønnessen, Astri Syse
doaj   +1 more source

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