EVSC 1450 Lecture Notes - Lecture 16: Extinction, Biome, Permafrost
31 Aug 2016
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Concepts, interpreting graphs or charts, other information drawn from lectures and readings. Read and outline before class (required readings on collab) Review your class notes alongside full lecture slides. Mass extinctions and major reorganizations associated with climate changes. Looking to past to see how systems and ecosystems reshuffled themselves. Also a time 6,000 years ago (0. 5-1*c warmer than pre- industrial) Lush sahara, fires in amazon, deciduous forests in: europe and boreal forest in the tundra. But fundamentally different: none of past changes were so big, so fast. Animals moving north to stay in comfort zone . Have certain body temperatures that they are accustomed to -- so we can look at animals to observe temperatures. Over past 25 years, most insects have moved north. Range shifts: species moving poleward and upslope. Phenology: periodic biological phenomena that are associated with climatic conditions; seasonal pattern of major life activities. Flower/leaf break 1. 4 to 3. 1 days earlier days -- 7-
