NATAMST 90 Lecture Notes - Lecture 6: Cascadia Subduction Zone, Juan De Fuca Plate, Estuary

• School: Berkeley
• Department: Native American Studies
• Course: NATAMST 90
• Professor: Diane Pearson

Document Summary

Mystery of the missing megafauna -- ruth murray-clay. What: researching the root causes of mammal extinctions. Why: how to better understand how to better protect. How: by studying climate changes in different time periods. Pleistocene period: had a very unstable climate. Lasted from 10,00 to 1. 8 million years ago. Effort to understand the mystery of large mammal extinctions. Global oxygen isotope records show that the rapid deglaciation at the end of late pleistocene was not faster or more extreme that other events. Humans directly affect large animals through hunting or other mechanism. Climate change affect small animals first through their plant food supplies. Desert bighorn sheep: live in small populations in the arid mountain ranges of the mojave, sonoran and great basin deserts of southwestern u. s. "summer is the best time to find sheep in the mojave. The hotter the better when they cluster near water, it"s much easier to collect data on the sheep.