Briga, Michael ; Verhulst, Simon In humans and in wild mammals and birds, the functioning of our bodies declines with age. Understanding how our organisms age and how this ageing associates with lifespan is crucial for improving our quality of life and lifespan. Our rate of energy consumption or metabolism determines many aspects of our activity, physiology, behaviour and personality. We know that in mammals … Continue reading We need more energy as we age
Spence, Austin; Tingley, Morgan Hummingbirds need a lot of energy. Their resting body temperature is around 40º C and their main method of flying, hovering, requires more energy than any other form of locomotion. Despite these energetic requirements, hummingbirds live across North and South America at a wide range of elevations. To live in these diverse environments while managing their energy needs, hummingbirds use a … Continue reading When do hummingbirds use torpor? Body size and the environment make a difference
Scarff, Fiona; Lenz, Tanja; Richards, Anna; Zanne, Amy; Wright, Ian; Westoby, Mark Plants need to regulate water content of their tissues, and each species addresses this challenge in its own characteristic way. Different strategies mean that some plants will be wetter during the hot, dry weather associated with wildfires. Wildfires are confined to a smaller area when they burn through moist fuels so, if species … Continue reading Effects of plant hydraulic traits on the flammability of live fine canopy fuels
Dong, Yun-wei; Zhang, Wenyi; Storey, Kenneth Anthropogenic global warming is one of the biggest environmental problems at present and how organisms cope with the rising temperatures raises more and more concerns. To understand the capability of organisms to survive future warming, it is important to study their physiological plasticity, the ability to adjust thermal tolerance to deal with high temperature. Physiological plasticity can take place … Continue reading Synchronization of seasonal acclimatization and short-term heat hardening improves physiological resilience in a changing climate
Ezenwa, Vanessa; LaVere, Ashley; Hamlin, Heather; Lowers, Russell; Parrott, Benjamin When you think about animal courtship, you may picture an ostentatious male strutting around to impress a group of females, like a peacock displaying its tail feathers; or two males fighting for a female’s favor, like two rams butting heads to show their strength. Although elaborate displays and acts of aggression may help a male … Continue reading The immune costs of testosterone: can males break even?