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Related Experiment Video

Updated: May 14, 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

Dark survival in a warming world.

A McMinn¹, A Martin

¹Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia. andrew.mcminn@utas.edu.au

Proceedings. Biological Sciences

|January 25, 2013

Summary

Polar algae and phytoplankton can survive extended darkness and increased temperatures. Climate change poses challenges, but these organisms show resilience in dark, warmer conditions.

Area of Science:

Marine Biology
Phycology
Climate Change Ecology

Background:

Algae commonly face dark periods, necessitating stored energy consumption.
Polar algae and microalgal cysts/spores endure prolonged darkness (months to years) requiring specialized survival strategies.
Strategies include dormancy (e.g., dinoflagellate cysts), physiological adaptations, and mixotrophy.

Purpose of the Study:

To investigate the survival strategies of algae, particularly polar microalgae, under prolonged darkness and projected climate change scenarios.
To assess the impact of increased temperatures on the dark survival of Arctic and Antarctic phytoplankton.

Main Methods:

Review of existing literature on algal survival strategies during darkness.
Analysis of experimental data on the tolerance of polar phytoplankton to elevated temperatures in dark conditions.

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Main Results:

Dinoflagellates exhibit remarkable long-term survival (over a century) in dormant states.
Arctic and Antarctic phytoplankton demonstrate the capacity to survive temperature increases of up to 6°C in the dark.
Future climate change will necessitate greater energy drawdown for polar microalgae during seasonal darkness due to higher temperatures.

Conclusions:

Polar microalgae possess inherent resilience to survive future climate conditions characterized by warmer, dark periods.
Understanding these survival mechanisms is crucial for predicting polar marine ecosystem responses to climate change.