BIOLOGY 1B Lecture Notes - Lecture 28: Marine Reserve, Exponential Growth, Experimental Lakes Area
Document Summary
The migration of homo sapiens out of africa. Arrival of humans in the americas and california. Are we in a sixth mass extinction. Ea(cid:396)liest ho(cid:373)o sapie(cid:374)s i(cid:374) mo(cid:396)o(cid:272)(cid:272)o je(cid:271)el i(cid:396)houd oldest k(cid:374)o(cid:449)(cid:374) ho(cid:373)o sapie(cid:374)s. Out of africa part 2, emigration of homo sapiens (100-70 ka) (cid:1009)(cid:1004),(cid:1004)(cid:1004)(cid:1004) (cid:455)ea(cid:396)s ago a(cid:396)(cid:396)i(cid:448)ed i(cid:374) aust(cid:396)alia. (cid:1005)(cid:1008). (cid:1009) ka a(cid:396)(cid:396)i(cid:448)ed i(cid:374) a(cid:373)e(cid:396)i(cid:272)as. Hu(cid:373)a(cid:374)s got to (cid:272)alifo(cid:396)(cid:374)ia a(cid:374)d liked it ide(cid:374)tified (cid:1010)(cid:1008) diffe(cid:396)e(cid:374)t la(cid:374)guages i(cid:374) (cid:272)alifo(cid:396)(cid:374)ia. People became diverse in their cultures, animals, languages, people, etc. Megafau(cid:374)a ho(cid:396)ses, g(cid:396)ou(cid:374)d sloths, (cid:271)ea(cid:396)s, lions, sabertooth cats, cheetahs. Correlation in time that these megafauna disappear as soon as people start arriving. Asynchrony in extinction patterns but synchrony with human arrival. Richard owen suggested that humans might have played a role in extinction. Still a debate between humans and climate. 400,000 years ago till present, temperature, methane, carbon dioxide cycled. May suggest that humans played a role in megafaunal extinctions.
