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A Simple and Inexpensive Method for Determining Cold Sensitivity and Adaptation in Mice

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Published on: March 17, 2015

Temperature dependence of the functional response.

Göran Englund¹, Gunnar Ohlund, Catherine L Hein

¹Department of Ecology and Environmental Science, Umeå University, SE-901 87 Umeå, Sweden. goran.englund@emg.umu.se

Ecology Letters

|July 15, 2011

Summary

This summary is machine-generated.

The Arrhenius equation inaccurately models predator-prey consumption temperature dependence. Meta-analysis reveals a hump-shaped relationship, not the linear one predicted, challenging its ecological application.

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Area of Science:

Ecology
Ecological Modeling
Thermodynamics

Background:

The Arrhenius equation is widely used to model temperature effects on biological rates.
Its application in predator-prey models for consumption is common.
This study investigates the empirical validity of this assumption.

Discussion:

A meta-analysis of functional response parameters and temperature was conducted.
Data were analyzed to assess the linearity predicted by the Arrhenius equation.
The analysis focused on attack rate and maximal ingestion rate.

Key Insights:

Temperature dependence of attack rate and maximal ingestion rate shows a hump-shaped, not linear, relationship.
This non-linear pattern persists even when excluding supra-optimal temperatures.
Attack rate exhibits stronger temperature dependence than maximal ingestion rate.

Outlook:

The Arrhenius equation's assumption of temperature importance above optima is untenable.
Rethinking the use of the Arrhenius equation in ecological models is necessary.
Future models should incorporate more realistic temperature-dependent functional responses.