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

Population Growth00:57

Population Growth

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.However, realistic environmental conditions limit the number of...
Predator-Prey Interactions02:39

Predator-Prey Interactions

Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.Although predation is commonly associated with carnivory, for...
Optimal Foraging00:48

Optimal Foraging

How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
What are Populations and Communities?00:30

What are Populations and Communities?

Populations are groups of individuals of the same species that inhabit a shared environment. Communities include multiple co-existing, interacting populations of different species. Metapopulations span multiple populations of the same species that occupy different areas. Metapopulations interact through immigration and emigration, providing genetic diversity that lends resilience to harsh environments. Population size and density can be estimated using quadrat and mark and recapture...
Distribution and Dispersion00:54

Distribution and Dispersion

Ecology is the study of how organisms interact with their environment and with one another. An important aspect of ecology is understanding where species are found and how individuals are distributed within those areas. The geographic range of a species refers to the total area where its members are located, while dispersion describes the pattern of spacing of individuals within that range.Geographic Range and Dispersion PatternsWithin a species’ geographic range, individuals may be distributed...
Modeling with Differential Equations01:25

Modeling with Differential Equations

Population dynamics can be described mathematically by considering the population size P(t) as a function of time. The rate of change of the population is then represented by the derivative of P(t). A simple assumption is that the rate of growth is proportional to the size of the population itself. This leads to an exponential growth model, where the population increases rapidly without bound. While this is a useful first approximation, it does not reflect realistic long-term...

You might also read

Related Articles

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

Sort by
Same author

Abstracts of presentations to the Annual Meetings of the Canadian Society of Colon and Rectal Surgeons Canadian Association of General Surgeons Canadian Association of Thoracic Surgeons: Canadian Surgery Forum, Toronto, Ont., September 6-9, 2007.

Canadian journal of surgery. Journal canadien de chirurgie·2023
Same author

The Integrative Migraine Pain Alleviation through Chiropractic Therapy (IMPACT) trial: Study rationale, design and intervention validation.

Contemporary clinical trials communications·2020
Same author

Incidence and temporal trends of co-occurring personality disorder diagnoses in immune-mediated inflammatory diseases.

Epidemiology and psychiatric sciences·2020
Same author

ACT for migraine: effect of acceptance and commitment therapy (ACT) for high-frequency episodic migraine without aura: preliminary data of a phase-II, multicentric, randomized, open-label study.

Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·2019
Same author

Compound tool construction by New Caledonian crows.

Scientific reports·2018
Same author

Prey and predator emigration responses in the acarine system Tetranychus urticae-Phytoseiulus persimilis.

Oecologia·2017
Same journal

The emerging field of wild animal welfare science.

Trends in ecology & evolution·2026
Same journal

Integrating nutritional mutualists into the evolution of defense.

Trends in ecology & evolution·2026
Same journal

Formation of three great Asian plateaus, climate change, and biodiversity: (Trends Ecol. Evol. 40, 970-982; 2025).

Trends in ecology & evolution·2026
Same journal

Digital twins as a tool for ecosystem research.

Trends in ecology & evolution·2026
Same journal

Constraint and convergence in the evolution of vertebrate sound production.

Trends in ecology & evolution·2026
Same journal

Is a comprehensive root economics space a chimera?

Trends in ecology & evolution·2026
See all related articles

Related Experiment Video

Updated: Jun 5, 2026

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
07:41

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

The ideal free distribution and predator-prey populations.

A Kacelnik1, J R Krebs, C Bernstein

  • 1Alejandro Kacelnik and John Krebs are at the Edward Grey Institute of Field Ornithology, Dept of Zoology, Oxford University, South Parks Road, Oxford OXI 3PS, UK.

Trends in Ecology & Evolution
|January 18, 2011
PubMed
Summary
This summary is machine-generated.

The ideal free distribution model, used to study competitor distribution in habitats, has been updated. These modifications incorporate individual behavior and explore whether equilibrium is reached, paving the way for new ecological research.

More Related Videos

Methodology for Developing Life Tables for Sessile Insects in the Field Using the Whitefly, Bemisia tabaci, in Cotton As a Model System
09:23

Methodology for Developing Life Tables for Sessile Insects in the Field Using the Whitefly, Bemisia tabaci, in Cotton As a Model System

Published on: November 1, 2017

Related Experiment Videos

Last Updated: Jun 5, 2026

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
07:41

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

Methodology for Developing Life Tables for Sessile Insects in the Field Using the Whitefly, Bemisia tabaci, in Cotton As a Model System
09:23

Methodology for Developing Life Tables for Sessile Insects in the Field Using the Whitefly, Bemisia tabaci, in Cotton As a Model System

Published on: November 1, 2017

Area of Science:

  • Ecology
  • Theoretical Ecology
  • Behavioral Ecology

Background:

  • The ideal free distribution (IFD) is a foundational ecological model.
  • It predicts how competitors distribute themselves between habitat patches.
  • Recent research has focused on refining the IFD model.

Purpose of the Study:

  • To review recent modifications and extensions to the ideal free distribution model.
  • To categorize these advancements into equilibrium-assuming and equilibrium-testing approaches.
  • To highlight how individual behavioral traits influence competitor distributions.

Main Methods:

  • Review of theoretical ecological literature.
  • Categorization of IFD model modifications.
  • Analysis of the implications of behavioral properties on distribution patterns.

Main Results:

  • IFD model modifications fall into two primary categories: those assuming equilibrium and those testing for it.
  • Recent extensions incorporate individual behavioral properties into distribution predictions.
  • These modifications provide a framework for empirical validation.

Conclusions:

  • The ideal free distribution model has been significantly advanced through recent theoretical work.
  • Incorporating behavioral ecology offers a more nuanced understanding of species distribution.
  • Further empirical studies are needed to test these refined theoretical models.