BIO120H1 Lecture Notes - Lecture 13: Montane Ecosystems, Habitat, Atmospheric Circulation
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BIO120H1 Full Course Notes
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Bio120: species ranges and limiting factors; climate (lecture 13) Interested in these questions considering levels of whole organisms and up. Questions have to do with how whole organisms are doing. Reproductive biology: one of the two things that characterize life on earth. Second characteristic: life is short, all things die. Science of ecology: science of distribution and abundance of organisms. Coniferous forests (spruce and fir trees, on sides of mountains) Sub-alpine meadow: grasslands, flowering plants, trees are all one species (low elevation) Lichens: slow-growing symbiotic combinations of algae and fungus. Conditions are not exhaustible: temperature, ph, salinity, etc. More physical than chemical, adjust behaviour and how you live to adjust to changes. Conditions vary across space and time; we envision gradients of conditions. No physical factors are evenly spread across face of world. Organisms perform best at certain levels (i. e. at certain portions of a gradient)
