▪ Abstract Although it is well established that during periods of torpor heterothermic
mammals and birds can reduce metabolic rates (MR) substantially, the mechanisms causing …

In this review I show that the '3/4-power scaling law'of metabolic rate is not universal, either
within or among animal species. Significant variation in the scaling of metabolic rate with …

A prominent signal of the Anthropocene is the extinction and population reduction of the
megabiota—the largest animals and plants on the planet. However, we lack a predictive …

Depression of metabolic rate has been recorded for virtually all major animal phyla in
response to environmental stress. The extent of depression is usually measured as the ratio …

Temperature profoundly influences physiological responses in animals, primarily due to the
effects on biochemical reaction rates. Since physiological responses are often exemplified …

For many animals, the best defense against harsh environmental conditions is an escape to
a hypometabolic or dormant state. Facultative metabolic rate depression is the common …

The last 'hibernation book'was published in 1982, nearly 40 years ago, so clearly an update
was needed. The options were a book written by a single author or an edited book written by …

Black bears hibernate for 5 to 7 months a year and, during this time, do not eat, drink,
urinate, or defecate. We measured metabolic rate and body temperature in hibernating black …

Metabolic rate depression is an important survival strategy for many animal species and a
common element of hibernation, torpor, aestivation, anaerobiosis, diapause, and …

The scaling of metabolic rate with body mass has long been a controversial topic. Some
workers have claimed that the slope of log‐log metabolic scaling relationships typically …