Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Conservation of Declining Populations02:07

Conservation of Declining Populations

13.5K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
13.5K
Conservation of Small Populations02:04

Conservation of Small Populations

17.6K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
17.6K
Population Growth00:57

Population Growth

29.3K
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
29.3K
Speciation Rates01:07

Speciation Rates

23.2K
Overview
23.2K
Genetic Drift03:33

Genetic Drift

44.6K
Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.
44.6K
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

65.2K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
65.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Corticotropin releasing hormone as an identifier of bronchiolitis obliterans syndrome.

Scientific reports·2022
Same author

Lung transplant after 6 months on ECMO support for SARS-CoV-2-induced ARDS complicated by severe antibody-mediated rejection.

BMJ open respiratory research·2021
Same author

[Lungtransplantation in Sweden - over 1 200 patients transplanted since 1990].

Lakartidningen·2020
Same author

Urgent lung allocation system in the Scandiatransplant countries.

The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation·2018
Same author

Microbiological findings in bronchoalveolar lavage fluid from lung transplant patients in Sweden.

Transplant infectious disease : an official journal of the Transplantation Society·2018
Same author

Lung transplantation after allogeneic stem cell transplantation: a pan-European experience.

The European respiratory journal·2018

Related Experiment Video

Updated: Mar 6, 2026

A System for Tracking the Dynamics of Social Preference Behavior in Small Rodents
08:38

A System for Tracking the Dynamics of Social Preference Behavior in Small Rodents

Published on: November 21, 2019

8.3K

Spatial dynamics in fluctuating vole populations.

Lennart Hansson1

  • 1Department of Wildlife Ecology, Swedish University of Agricultural Sciences, S-750 07, Uppsala, Sweden.

Oecologia
|March 18, 2017
PubMed
Summary
This summary is machine-generated.

Cyclic vole populations showed less consistent spatial distribution than semi-cyclic ones. Spatial dynamics are crucial for non-cyclic populations, potentially influenced by shared limiting factors and social behavior.

Keywords:
CyclicityMicrotinesRegulationSpatial dynamicsTemporal dynamics

More Related Videos

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

1.4K
Conditions Affecting Social Space in Drosophila melanogaster
08:04

Conditions Affecting Social Space in Drosophila melanogaster

Published on: November 5, 2015

12.9K

Related Experiment Videos

Last Updated: Mar 6, 2026

A System for Tracking the Dynamics of Social Preference Behavior in Small Rodents
08:38

A System for Tracking the Dynamics of Social Preference Behavior in Small Rodents

Published on: November 21, 2019

8.3K
Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

1.4K
Conditions Affecting Social Space in Drosophila melanogaster
08:04

Conditions Affecting Social Space in Drosophila melanogaster

Published on: November 5, 2015

12.9K

Area of Science:

  • Ecology
  • Population Dynamics
  • Zoology

Background:

  • Understanding population dynamics is key in ecology.
  • Vole populations exhibit diverse patterns, including cyclic and semi-cyclic fluctuations.
  • Spatial and temporal factors significantly influence population distribution and density.

Purpose of the Study:

  • To compare spatial and temporal distribution patterns between semi-cyclic and cyclic vole populations.
  • To investigate the extent of spatial density-dependence in different population types.
  • To identify factors influencing vole population dynamics.

Main Methods:

  • Comparative analysis of Clethrionomys glareolus and Microtus agrestis populations.
  • Assessment of distribution patterns, spatial and temporal components, and spatial density-dependence.
  • Study conducted in south-central and north Sweden.

Main Results:

  • Cyclic populations were less clumped than semi-cyclic ones.
  • Clethrionomys glareolus, but not Microtus agrestis, showed consistent distribution across years.
  • Spatial variation had minimal impact on cyclic populations, unlike semi-cyclic ones where it was significant.
  • Spatial density-dependence varied with population phases in C. glareolus.

Conclusions:

  • Spatial dynamics warrant equal consideration to temporal dynamics in non-cyclic populations.
  • Shared regulatory factors may operate in both spatial and temporal dimensions.
  • Social behavior may play a species-specific role in spatial population dynamics.