BIOC63H3 Lecture : BGYC63 Sept27
Document Summary
Do stats yourself (instruction in lab mannual) or lanna will help in 2nd lab slot (lg2) in room tba on black board. Therefore, both lab groups will submit at the same deadline (lg2) Trying to see what threats to biodiversity is the most important in these two environments. For terrestrial, land use changeso habitat destruction, then climate change. Biotic exchange is when there are alien species introduced. For aquatic ecosystems, before, the main threat was fishingbut now, climate change. **5 biome specific threats to biodiversity ** (look at chart) Land use, climate, nitrogen deposition, biotic exchange, atmosphere co2. These 5 drivers happen on a different level and importance across different ecosystems! Land use has the most vulnerability because withiout the land, there is no way to live: overexploitation. Human driven extinctionwherever human appear, megafaunas (large animals) are usually driven to extinction. So easily hunted, because megafaunas had no natural enemies.
