K. L. Campbell

Genetic excision of the regulatory cardiac troponin I extension in high heart rate mammal clades

The paper shows that genetic excision of a cardiac troponin I extension in mammals allows for high heart rates by mimicking phosphorylation without adrenergic stimulation.

Thermoconforming rays of the star-nosed mole

The study examines whether the star-nosed mole's nasal appendages maintain surface temperature aligned with ambient conditions, finding passive thermoconformation without evidence of active thermoregulation.

Evolution of an extreme hemoglobin phenotype contributed to the sub-Arctic specialization of extinct Steller's sea cows

This paper identifies an amino acid substitution in Steller's sea cow hemoglobin that altered oxygen affinity and solubility, contributing to their cold adaptation.

Bacterioplankton taxa compete for iron along the early spring-summer transition in the Arctic Ocean

The paper examines iron competition among bacterioplankton taxa in the Arctic Ocean during early spring-summer, finding Bacteroidetes act as cheaters by relying on siderophores synthesized by Gammaproteobacteria.

Dive performance and aquatic thermoregulation of the world's smallest mammalian diver, the American water shrew (Sorex palustris)

This study examines the diving performance and thermoregulation of the American water shrew, finding that it maintains aerobic dives and uses behavioral thermoregulation to avoid immersion hypothermia.

Myoglobin primary structure reveals multiple convergent transitions to semi-aquatic life in the world smallest mammalian divers

The paper uses myoglobin primary structure to identify convergent transitions to semi-aquatic life in Eulipotyphla mammals.

Inactivation of thermogenic UCP1 as a historical contingency in multiple placental mammal clades

The paper shows that inactivation of UCP1 occurred in multiple placental mammal clades and is linked to reduced metabolic intensity and increased body mass during periods of global cooling.