BIOL108 Lecture 26: Humans and Biosphere
3 Aug 2018
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21st of may 2018: lecture 30 humans and biosphere. It is a volcanic island in the subtropics: an ecological disaster- easter island: There use to be forests and multiple species on this island. The forest began to degenerate because of the colonization of humans and their idea of architecture (moai carvings) The ecological disaster on easter island was caused by; Ecosystems collapse: how periods and epochs are defined (anthropocene): Distinguished by transitions in the rock record. Reflect major changes on earth mass extinctions, changes in climate, in oceans and atmosphere. The holocene (epoch time period) is climatically stable but it may not last much longer because humans have entered into the climatic stage of. The rise of alterations to n, p and c cycles, mass extinction, ocean acidification, pollutants and waste. The first stage of the anthropocene began late 18th century due to the increased carbon emissions by humans. The key points that will destabilize earth systems:
