How do changes in temperature affect the amount of oxygen that is available to cold-blooded, aquatic animals? Oxygen partial pressure, solubility and diffusivity all influence the amount of oxygen that is available to these animals. This animation explains how these elements interact to provide a better understanding of oxygen supply and demand, showing that oxygen governs patterns in body size and species diversity. Ecology: Oxygen & Cold Blooded Animals | Concept and Text – Wilco Verberk – aqu