BIOB32H3 Lecture Notes - Lecture 9: Toboggan, Neutral Buoyancy, American Marten
15 Apr 2019
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Whiteman et al. (2013) wildlife biol 19: 156. Since time is eliminated, speed is not important: animals can move at natural speeds . Since time is eliminated, speed is not important: animals can move at natural speeds must overcome gravity must overcome gravity but also generate lift. Drag, but neutral buoyancy so no gravity. Water rat: what if we look at other aquatic organisms other than fish? would swimming be still as efficient? looking at semi-aquatic and aquatic mammals vs. fish, here we see a water rat (semi-aq mam) Elk snow has a major influence on cost of transport for animals. 50% heavier, mostly via fat accumulation: doesn"t this add to their energy expenditure? these birds become fat in winter, they gain 50% of their body mass bc the fat help them survive in winter. No: measure cost of locomotion either based on total mass or fat-free mass: winter birds not above summer birds!
