Biology 3601A/B Lecture Notes - Lecture 3: Relative Humidity, Metabolic Water, Main Source

• School: Western University
• Department: Biology
• Course: Biology 3601A/B
• Professor: Brent Sinclair

Document Summary

Lecture 3 ion and water balance 2. Ice has a low energy state water absorbs onto the surface of ice crystals: relative humidity: humidity relative to the maximum saturation of the air. I(cid:374) air there is a (cid:373)a(cid:454)i(cid:373)u(cid:373) a(cid:373)ou(cid:374)t of hu(cid:373)idit(cid:455) (cid:455)ou (cid:272)a(cid:374) (cid:862)fit(cid:863) i(cid:374) it: lower temperatures have lower humidity capacities, where hotter weather has higher capacities. Terrestrial animals: few phyla have done really well on land, from increasing desiccation tolerance (increasing numbers of species, mollusks, ex. snails and slugs, arthropods and vertebrates, most successful terrestrial phyla, no matter how you measure it. Using dehydration tolerance to conceptualize mechanisms of water balance: how much water loss animals can tolerate, and strategies to help. For exam: think about the mechanisms animals use to apply these strategies. Carry more water: organisms will carry and accumulate more water, can do this by drinking water, or storing water.