Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

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.

Background and Environment Affect Phenotype

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

Requirements for Human Life

Requirements for Human Life

The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...

Factors Affecting Body Temperature

Factors Affecting Body Temperature

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:

Derivatives: Problem Solving

Derivatives: Problem Solving

Temperature-Dependent Growth of Brook TroutThe growth of brook trout is closely influenced by water temperature. Experimental data demonstrate how trout weight changes over a 24-day period in response to varying water temperatures. At lower temperatures, such as 15.5 degrees Celsius, brook trout show significant weight gain. However, as the temperature increases, the amount of weight gained steadily decreases. At the highest temperature measured, 24.4 degrees Celsius, trout experience a net...

Decreased Body Temperature

Decreased Body Temperature

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...

You might also read

Related Articles

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

Sort by

Same author

Tropical Seed Trait Database: advancing seed functional ecology in the world's most biodiverse region.

The New phytologist·2026

Same author

When is a resprouter a resprouter? Improving terminology to reflect ecological thresholds for post-fire plant persistence.

The Science of the total environment·2026

Same author

Seed fatty acid composition and physical dormancy in fire-prone ecosystems.

Annals of botany·2025

Same author

Metabolic Niches and Plasticity of Sand-Dune Plant Communities Along a Trans-European Gradient.

Metabolites·2025

Same author

Extreme fire severity interacts with seed traits to moderate post-fire species assemblages.

American journal of botany·2025

Same author

Defining the pyro-thermal niche: do seed traits, ecosystem type and phylogeny influence thermal thresholds in seeds with physical dormancy?

The New phytologist·2025

Search research articles

Related Experiment Video

Updated: Apr 12, 2026

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

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

Published on: March 9, 2021

Intra-population level variation in thresholds for physical dormancy-breaking temperature.

Ganesha S Liyanage¹, Mark K J Ooi²

¹Centre for Sustainable Ecosystem Solutions, School of Biological Sciences, University of Wollongong, Wollongong, NSW 2522, Australia gslbl998@uowmail.edu.au.

Annals of Botany

|May 23, 2015

Summary

Plant populations show varied seed dormancy responses to heat, enhancing survival in unpredictable fire-prone environments. This variation within populations acts as a bet-hedging strategy for long-term persistence.

Keywords:

Fabaceae Seed germination bet-hedging strategy coexistence dormancy-breaking thresholds fire germination hard seeds intra-population population persistence seed bank.

More Related Videos

High-Throughput Assays of Critical Thermal Limits in Insects

High-Throughput Assays of Critical Thermal Limits in Insects

Published on: June 15, 2020

Thermal Limits Determination for Zooplankton Using a Heat Block

Thermal Limits Determination for Zooplankton Using a Heat Block

Published on: November 18, 2022

Related Experiment Videos

Last Updated: Apr 12, 2026

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

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

Published on: March 9, 2021

High-Throughput Assays of Critical Thermal Limits in Insects

High-Throughput Assays of Critical Thermal Limits in Insects

Published on: June 15, 2020

Thermal Limits Determination for Zooplankton Using a Heat Block

Thermal Limits Determination for Zooplankton Using a Heat Block

Published on: November 18, 2022

Area of Science:

Ecological genetics
Plant reproductive strategies
Fire ecology

Background:

Intra-population variation in seed dormancy aids persistence in unpredictable environments.
Physically dormant species are crucial in fire-prone habitats.
Soil temperatures from fires vary, influencing seed dormancy breaking.

Purpose of the Study:

Quantify intra-population variation in seed dormancy-breaking temperature thresholds.
Investigate variation in dormancy-breaking temperatures among individual plants from the same maternal environment.

Main Methods:

Assessed five common physically dormant shrub species (Fabaceae) from fire-prone Australian vegetation.
Used heat treatments (40–120 °C) and germination trials on seeds from individual maternal plants.
Analyzed dormancy-breaking thresholds and germination rates (T50).

Main Results:

Significant variation in dormancy-breaking heat thresholds was found among individual plants for all species.
Some seeds germinated after low-temperature heat, while others required high-severity fire temperatures.
Germination rate (T50) varied among individuals in three of the five species.

Conclusions:

Detected variation in dormancy-breaking thresholds among individuals in close proximity.
Individual-level differences contribute to seed bank variation, offering a bet-hedging strategy.
This variation enhances population persistence probability under variable fire regimes.