Jove
Visualize
Contact Us

Related Concept Videos

Population Growth00:57

Population Growth

27.5K
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.
27.5K
Conservation of Declining Populations02:07

Conservation of Declining Populations

12.3K
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.
12.3K
Conservation of Small Populations02:04

Conservation of Small Populations

16.4K
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...
16.4K
Diversity of Protists II01:27

Diversity of Protists II

657
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
657
Diversity of Protists IV01:27

Diversity of Protists IV

604
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
604
Short-distance Transport of Resources02:12

Short-distance Transport of Resources

17.1K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
17.1K

You might also read

Related Articles

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

Sort by
Same author

Collective dynamical regimes predict invasion success and impacts in microbial communities.

Nature ecology & evolution·2025
Same author

Emergent phases of ecological diversity and dynamics mapped in microcosms.

Science (New York, N.Y.)·2022
Same author

Local and collective transitions in sparsely-interacting ecological communities.

PLoS computational biology·2022
Same author

Complex interactions can create persistent fluctuations in high-diversity ecosystems.

PLoS computational biology·2020
Same journal

Combinatorial multiomic analysis from a pedigree of Sox10Dom Hirschsprung mice identifies multiple high confidence candidate modifiers of Enteric Nervous System development.

PLoS computational biology·2026
Same journal

Extracting host-specific developmental signatures from longitudinal microbiome data.

PLoS computational biology·2026
Same journal

Population sparseness determines strength of Hebbian plasticity for maximal memory lifetime in associative networks.

PLoS computational biology·2026
Same journal

Predictive coding explains asymmetric connectivity in the brain: A neural network study.

PLoS computational biology·2026
Same journal

Zooplankton feeding behavioral signatures in the morphology of macroscale prey spatial distribution.

PLoS computational biology·2026
Same journal

A brief overview of 20 years of neuroscience in PLoS Computational Biology.

PLoS computational biology·2026
See all related articles
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 Experiment Video

Updated: Dec 6, 2025

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
08:16

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Published on: March 13, 2014

19.3K

Dynamical persistence in high-diversity resource-consumer communities.

Itay Dalmedigos1, Guy Bunin1

  • 1Department of Physics, Technion-Israel Institute of Technology, Haifa 32000, Israel.

Plos Computational Biology
|October 12, 2020
PubMed
Summary
This summary is machine-generated.

Highly diverse ecological communities with resource competition and migration can exhibit persistent abundance fluctuations. This occurs when species diversity exceeds the number of available resources, driving unstable population dynamics.

More Related Videos

Resurrection of Dormant Daphnia magna: Protocol and Applications
07:37

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

19.2K
JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning
09:23

JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning

Published on: March 21, 2025

1.7K

Related Experiment Videos

Last Updated: Dec 6, 2025

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
08:16

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Published on: March 13, 2014

19.3K
Resurrection of Dormant Daphnia magna: Protocol and Applications
07:37

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

19.2K
JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning
09:23

JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning

Published on: March 21, 2025

1.7K

Area of Science:

  • Ecology
  • Theoretical Ecology
  • Mathematical Biology

Background:

  • Ecological communities face complex dynamics from species interactions and environmental factors.
  • Understanding the conditions for stable versus fluctuating population sizes is crucial in ecology.

Purpose of the Study:

  • To investigate the conditions under which highly diverse ecological communities exhibit persistent abundance fluctuations.
  • To identify the key ratio determining community stability versus persistent fluctuations.

Main Methods:

  • Mathematical modeling of ecological communities with resource competition and migration.
  • Analysis of parameter space to identify regimes leading to stable equilibria or persistent fluctuations.
  • Examination of the role of species diversity relative to resource availability.

Main Results:

  • Persistent abundance fluctuations are robustly predicted in specific parameter regimes.
  • The ratio of realized species diversity to the number of resources is a critical determinant.
  • When this ratio exceeds one, competitive exclusion leads to unstable or marginally stable fixed points, resulting in fluctuations.

Conclusions:

  • Highly diverse communities with resource competition and migration are prone to persistent abundance fluctuations.
  • The critical threshold for fluctuations is when species diversity outnumbers available resources.
  • Even minor model variations can destabilize theoretical equilibria, favoring persistent fluctuations in diverse systems.