Hot limpets: predicting body temperature in a conductance-mediated thermal system

Area of Science:

• Marine Biology
• Ecological Physiology
• Climate Change Biology

Background:

• Intertidal organisms are sensitive indicators of environmental change.
• Predicting the biological impacts of climate change requires understanding organismal thermal budgets.
• Existing models fail to account for substratum conduction in intertidal heat budgets.

Purpose of the Study:

• To develop a simple heat-budget model for the limpet Lottia gigantea.
• To test the model's accuracy against field measurements.
• To provide a tool for predicting intertidal organismal thermal responses to environmental change.

Main Methods:

• Development of a simple heat-budget model for Lottia gigantea.
• Field measurements of limpet body temperature.
• Validation of the model using meteorological and physical inputs.

Main Results:

• The model accurately predicts daily maximal body temperatures of limpets within a fraction of a degree.
• The model relies on easily measurable physical and meteorological data.
• The model demonstrates the significant influence of substratum conduction on thermal budgets.

Conclusions:

• The proposed heat-budget model is a valuable tool for studying limpet thermal biology.
• The model can be adapted for other intertidal species, including chitons and barnacles.
• This approach aids in predicting the effects of climate change on intertidal ecosystems.