BIOLOGY 152 Lecture Notes - Lecture 39: Freezing Rain, Habitat Fragmentation
2 May 2016
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Bio152 lecture 39 biological effects of climate change. An organism"s climate envelope: this includes temperature, precipitation, and seasonality, temperature. Increase in night time temperatures greater than daytime: precipitation, varies regionally. Floods and drought: less precipitation as snow in some areas. Less snow pack decreases water availability in warm months. Conditions that increase fire probability: seasonality, earlier spring and later fall, earlier ice out of ponds and lakes, more frost free days, evolution needs to keep up with the rate of climate change. Increasing temperatures can make an area either less of more suitable for a given species. Responses to physiological stress: stay in place, local or global extinction, acclimation, adaptation, move, dispersal. Coral bleaching: coral that does not have the algae to break down the bleach will do poorly compared to the ones that do. Images shown on the next page explain more on this topic: turfing algae do well when present on the corals.
