Jove
Visualize
Contact Us

Related Concept Videos

Threats to Biodiversity01:50

Threats to Biodiversity

22.2K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
22.2K
Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

13.4K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.4K
Factors Affecting Body Temperature01:28

Factors Affecting Body Temperature

3.9K
As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may  include:
3.9K
Decreased Body Temperature01:29

Decreased Body Temperature

602
A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
602
Conservation of Small Populations02:04

Conservation of Small Populations

13.1K
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...
13.1K
Ecological Disturbance02:26

Ecological Disturbance

17.0K
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
17.0K

You might also read

Related Articles

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

Sort by
Same author

Evidence for adaptive explanations of semelparity in animals.

Biological reviews of the Cambridge Philosophical Society·2026
Same author

Plant population responses to environmental variability are primarily driven by survival-reproduction trade-offs and mediated by aridity.

Nature communications·2026
Same author

Demographic buffering in natural populations: A multi-level perspective.

The Journal of animal ecology·2026
Same author

Beyond species means - the intraspecific contribution to global wood density variation.

The New phytologist·2026
Same author

Demography Meets Climate Change: Life History Challenges for a Neotropical Viviparous Lizard.

Ecology and evolution·2025
Same author

Population Structure Plays a Key Role in Community Stability.

Ecology letters·2025
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: Jun 12, 2025

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
07:54

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

2.9K

Severe fire regimes decrease resilience of ectothermic populations.

Heitor Campos de Sousa1, Adriana Malvasio1, Guarino Rinaldi Colli2

  • 1Universidade Federal do Tocantins-UFT, Palmas, Tocantins, Brazil.

The Journal of Animal Ecology
|September 23, 2024
PubMed
Summary

Demographic resilience in lizards depends on reproduction, not just resistance. Intermediate fire severity aids recovery, while severe fires can lead to population collapse, highlighting the need for fire heterogeneity in conservation.

Keywords:
demographydisturbanceecophysiologyenvironmental changeintegral projection modellife historyreptiletransient dynamics

More Related Videos

High-Throughput Assays of Critical Thermal Limits in Insects
06:58

High-Throughput Assays of Critical Thermal Limits in Insects

Published on: June 15, 2020

5.1K
Resurrection of Dormant Daphnia magna: Protocol and Applications
07:37

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

18.3K

Related Experiment Videos

Last Updated: Jun 12, 2025

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
07:54

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

2.9K
High-Throughput Assays of Critical Thermal Limits in Insects
06:58

High-Throughput Assays of Critical Thermal Limits in Insects

Published on: June 15, 2020

5.1K
Resurrection of Dormant Daphnia magna: Protocol and Applications
07:37

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

18.3K

Area of Science:

  • Ecology
  • Environmental Science
  • Conservation Biology

Background:

  • Understanding population responses to environmental change is critical for conservation.
  • Demographic resilience components (resistance, compensation, recovery) are key to population persistence.
  • Prescribed fire regimes significantly impact savanna ecosystems and their inhabitants.

Purpose of the Study:

  • To investigate how demographic resilience components co-vary with life history traits in three lizard species under varying fire regimes.
  • To determine the influence of weather, microclimate, and ecophysiological traits on lizard vital rates and resilience.
  • To identify key drivers of demographic resilience across different fire severities and climatic conditions.

Main Methods:

  • Utilized a Bayesian hierarchical framework with 14 years of individual-level mark-recapture data.
  • Employed stochastic integral projection models parameterized with estimated vital rates (survival, growth, reproduction).
  • Analyzed data from five Brazilian savanna sites with distinct historical fire regimes.

Main Results:

  • Weather and microclimate were stronger predictors of vital rates than ecophysiological traits.
  • Severe fire regimes enhanced resistance but reduced compensation and recovery; intermediate severity promoted higher compensation and recovery.
  • Reproductive output and generation time predicted resilience trends; monthly reproduction was a proximal driver of demographic resilience.

Conclusions:

  • Lizard populations may reach a tipping point and an alternative stable state under severe fire regimes.
  • Fire regime heterogeneity can enhance population resilience by promoting reproduction and avoiding high-severity disturbances.
  • Reproductive constraints (e.g., viviparity, fixed clutch size) significantly impact ectotherm recovery and resilience, crucial for conservation assessments.