BIO220H1 Lecture : Lecture 23 .docx
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BIO220H1 Full Course Notes
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Lecture 23: climate effects on organisms, phenology, and interactions. Basic eeb principles (and example of petm) leads us to expect: migrations: Altitudinal (toward mountaintops: evolutionary change, population dynamics, incl. extinctions, phonological change. Find out where a species is now, Measure conditions in its current age (i. e. average temperature, rainfall, vapour pressure, altitude, distance from the ocean) the abiotic environment: gives us a statistical condition that gives the abiotic conditions that are suitable. Take the global change models and see how they"ll change in the future. Then in the future, find the same spots in the map that are currently suitable. By comparing where it is now, we can see how far the range has to shift. Where the climate is and where that climate will be found. Such shifts have happened routinely through geological time: All the trees, plants, animals have colonized this region relatively recently (they dispersed)