BIOLOGY 1M03 Lecture Notes - Lecture 9: Ecosystem Ecology, Crypsis, Ecological Study
3 Apr 2018
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Document Summary
Tropical wet forests- extremely rich in species, rain varies across season. Subtropic desert (30-40 degrees), dry & hot, cacti live there very low rain, temperature is high average. Temperate dry lands, dominant life form of grasses, lots of res in this area too, love total rain, moderate average temp. Temperate forests, broad leaf plants, moderate temp, moderate rain. Boreal forest, needle leaf trees, low average temp, low average rain. Arctic tundra, cold tolerant shrubs, very low temp, very low rain. Evolutionary adaptation: long term, genetically based changes due to natural selection favouring bene cial mutation, evolution of crypsis ( sh blending into background) Behaviour response: short term, response to the environment in broad terms, (retreat to burrow during intense heat, escape from a predator etc) Cheat grass: cheats native plants of what in the spring, before native plants become active, adds fuel to re,
